./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Ex08.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/Ex08.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 0f19c27ba74e1ebec32cb641e6640521812ace19 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Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 14:10:07,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 14:10:07,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 14:10:07,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 14:10:07,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 14:10:07,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 14:10:07,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 14:10:07,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 14:10:07,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 14:10:07,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 14:10:07,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 14:10:07,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 14:10:07,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 14:10:07,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 14:10:07,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 14:10:07,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 14:10:07,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 14:10:07,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 14:10:07,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 14:10:07,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 14:10:07,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 14:10:07,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 14:10:07,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 14:10:07,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 14:10:07,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 14:10:07,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 14:10:07,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 14:10:07,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 14:10:07,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 14:10:07,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 14:10:07,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 14:10:07,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 14:10:07,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 14:10:07,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 14:10:07,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 14:10:07,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 14:10:07,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 14:10:07,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 14:10:07,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 14:10:07,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 14:10:07,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 14:10:07,765 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-27 14:10:07,789 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 14:10:07,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 14:10:07,790 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 14:10:07,790 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 14:10:07,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 14:10:07,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 14:10:07,791 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 14:10:07,791 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 14:10:07,791 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 14:10:07,791 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 14:10:07,792 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 14:10:07,792 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 14:10:07,792 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 14:10:07,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 14:10:07,792 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 14:10:07,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 14:10:07,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 14:10:07,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 14:10:07,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 14:10:07,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 14:10:07,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 14:10:07,793 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 14:10:07,793 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 14:10:07,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 14:10:07,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 14:10:07,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 14:10:07,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 14:10:07,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 14:10:07,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 14:10:07,794 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 14:10:07,794 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f19c27ba74e1ebec32cb641e6640521812ace19 [2021-08-27 14:10:08,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 14:10:08,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 14:10:08,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 14:10:08,063 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 14:10:08,064 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 14:10:08,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Ex08.c [2021-08-27 14:10:08,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46f772f7a/ab2bab7ad90e4222bf91283c349a9e72/FLAG5b388d705 [2021-08-27 14:10:08,458 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 14:10:08,459 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Ex08.c [2021-08-27 14:10:08,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46f772f7a/ab2bab7ad90e4222bf91283c349a9e72/FLAG5b388d705 [2021-08-27 14:10:08,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46f772f7a/ab2bab7ad90e4222bf91283c349a9e72 [2021-08-27 14:10:08,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 14:10:08,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 14:10:08,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 14:10:08,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 14:10:08,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 14:10:08,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:10:08" (1/1) ... [2021-08-27 14:10:08,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f1c09d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:08, skipping insertion in model container [2021-08-27 14:10:08,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:10:08" (1/1) ... [2021-08-27 14:10:08,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 14:10:08,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 14:10:08,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:10:08,987 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 14:10:08,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:10:09,001 INFO L208 MainTranslator]: Completed translation [2021-08-27 14:10:09,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:09 WrapperNode [2021-08-27 14:10:09,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 14:10:09,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 14:10:09,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 14:10:09,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 14:10:09,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:09" (1/1) ... [2021-08-27 14:10:09,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:09" (1/1) ... [2021-08-27 14:10:09,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 14:10:09,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 14:10:09,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 14:10:09,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 14:10:09,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:09" (1/1) ... [2021-08-27 14:10:09,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:09" (1/1) ... [2021-08-27 14:10:09,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:09" (1/1) ... [2021-08-27 14:10:09,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:09" (1/1) ... [2021-08-27 14:10:09,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:09" (1/1) ... [2021-08-27 14:10:09,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:09" (1/1) ... [2021-08-27 14:10:09,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:09" (1/1) ... [2021-08-27 14:10:09,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 14:10:09,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 14:10:09,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 14:10:09,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 14:10:09,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:09" (1/1) ... [2021-08-27 14:10:09,052 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:09,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:09,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:09,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 14:10:09,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 14:10:09,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 14:10:09,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 14:10:09,203 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 14:10:09,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:10:09 BoogieIcfgContainer [2021-08-27 14:10:09,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 14:10:09,206 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 14:10:09,206 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 14:10:09,208 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 14:10:09,208 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:10:09,208 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 02:10:08" (1/3) ... [2021-08-27 14:10:09,209 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f7cacc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:10:09, skipping insertion in model container [2021-08-27 14:10:09,209 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:10:09,209 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:10:09" (2/3) ... [2021-08-27 14:10:09,210 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f7cacc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:10:09, skipping insertion in model container [2021-08-27 14:10:09,210 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:10:09,210 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:10:09" (3/3) ... [2021-08-27 14:10:09,211 INFO L389 chiAutomizerObserver]: Analyzing ICFG Ex08.c [2021-08-27 14:10:09,267 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 14:10:09,267 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 14:10:09,267 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 14:10:09,267 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 14:10:09,268 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 14:10:09,268 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 14:10:09,268 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 14:10:09,268 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 14:10:09,276 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:09,286 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-08-27 14:10:09,286 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:09,286 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:09,289 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 14:10:09,290 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-27 14:10:09,290 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 14:10:09,290 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:09,291 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-08-27 14:10:09,291 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:09,291 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:09,291 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 14:10:09,291 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-27 14:10:09,295 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 6#L18-1true [2021-08-27 14:10:09,295 INFO L793 eck$LassoCheckResult]: Loop: 6#L18-1true assume !!(main_~i~0 > 0); 10#L12true assume 1 == main_~i~0;main_~up~0 := 1; 3#L12-2true assume 10 == main_~i~0;main_~up~0 := 0; 8#L15-1true assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6#L18-1true [2021-08-27 14:10:09,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:09,299 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-08-27 14:10:09,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:09,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651229346] [2021-08-27 14:10:09,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:09,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:09,367 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:09,386 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:09,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:09,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1234538, now seen corresponding path program 1 times [2021-08-27 14:10:09,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:09,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002311035] [2021-08-27 14:10:09,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:09,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:10:09,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:09,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002311035] [2021-08-27 14:10:09,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002311035] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:10:09,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:10:09,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 14:10:09,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799694315] [2021-08-27 14:10:09,476 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:10:09,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:09,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 14:10:09,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 14:10:09,499 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:09,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:09,533 INFO L93 Difference]: Finished difference Result 13 states and 19 transitions. [2021-08-27 14:10:09,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 14:10:09,535 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 19 transitions. [2021-08-27 14:10:09,535 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-08-27 14:10:09,538 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 14 transitions. [2021-08-27 14:10:09,539 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-08-27 14:10:09,539 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-08-27 14:10:09,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 14 transitions. [2021-08-27 14:10:09,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:10:09,540 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-08-27 14:10:09,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 14 transitions. [2021-08-27 14:10:09,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-08-27 14:10:09,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:09,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2021-08-27 14:10:09,556 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-08-27 14:10:09,557 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2021-08-27 14:10:09,557 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 14:10:09,557 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2021-08-27 14:10:09,557 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-08-27 14:10:09,557 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:09,558 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:09,558 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 14:10:09,558 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-27 14:10:09,558 INFO L791 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 34#L18-1 [2021-08-27 14:10:09,558 INFO L793 eck$LassoCheckResult]: Loop: 34#L18-1 assume !!(main_~i~0 > 0); 39#L12 assume !(1 == main_~i~0); 37#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 38#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 34#L18-1 [2021-08-27 14:10:09,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:09,559 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-08-27 14:10:09,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:09,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111081545] [2021-08-27 14:10:09,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:09,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:09,562 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:09,564 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:09,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:09,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1236460, now seen corresponding path program 1 times [2021-08-27 14:10:09,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:09,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548152125] [2021-08-27 14:10:09,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:09,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:09,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:10:09,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:09,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548152125] [2021-08-27 14:10:09,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548152125] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:10:09,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:10:09,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 14:10:09,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996017457] [2021-08-27 14:10:09,579 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:10:09,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:09,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 14:10:09,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 14:10:09,580 INFO L87 Difference]: Start difference. First operand 9 states and 14 transitions. cyclomatic complexity: 6 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:09,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:09,587 INFO L93 Difference]: Finished difference Result 13 states and 20 transitions. [2021-08-27 14:10:09,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 14:10:09,588 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 20 transitions. [2021-08-27 14:10:09,588 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-08-27 14:10:09,589 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 20 transitions. [2021-08-27 14:10:09,589 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-08-27 14:10:09,589 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-08-27 14:10:09,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 20 transitions. [2021-08-27 14:10:09,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:10:09,590 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2021-08-27 14:10:09,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 20 transitions. [2021-08-27 14:10:09,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-08-27 14:10:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:09,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 20 transitions. [2021-08-27 14:10:09,592 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2021-08-27 14:10:09,592 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2021-08-27 14:10:09,592 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 14:10:09,592 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 20 transitions. [2021-08-27 14:10:09,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-08-27 14:10:09,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:09,593 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:09,593 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 14:10:09,593 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-27 14:10:09,593 INFO L791 eck$LassoCheckResult]: Stem: 61#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 62#L18-1 [2021-08-27 14:10:09,593 INFO L793 eck$LassoCheckResult]: Loop: 62#L18-1 assume !!(main_~i~0 > 0); 71#L12 assume !(1 == main_~i~0); 70#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 65#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 62#L18-1 [2021-08-27 14:10:09,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:09,594 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2021-08-27 14:10:09,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:09,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117656533] [2021-08-27 14:10:09,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:09,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:09,597 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:09,599 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:09,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:09,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1236462, now seen corresponding path program 1 times [2021-08-27 14:10:09,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:09,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134983430] [2021-08-27 14:10:09,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:09,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:09,604 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:09,607 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:09,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:09,608 INFO L82 PathProgramCache]: Analyzing trace with hash 29865613, now seen corresponding path program 1 times [2021-08-27 14:10:09,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:09,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982818762] [2021-08-27 14:10:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:09,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:09,612 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:09,615 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:09,655 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:09,656 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:09,656 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:09,656 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:09,656 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:10:09,656 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:09,656 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:09,656 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:09,657 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration3_Loop [2021-08-27 14:10:09,657 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:09,657 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:09,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:09,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:09,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:09,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:09,721 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:09,721 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:10:09,722 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:09,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:09,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:09,735 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:09,735 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:09,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-27 14:10:09,755 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:09,755 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: [] [2021-08-27 14:10:09,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:09,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:09,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:09,776 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:09,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-27 14:10:09,779 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:09,779 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:09,801 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:09,801 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: [] [2021-08-27 14:10:09,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:09,819 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:09,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:09,821 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:09,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-27 14:10:09,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:09,826 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:09,843 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:09,843 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:09,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:09,858 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:09,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:09,859 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:09,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-27 14:10:09,861 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:09,861 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:09,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:09,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:09,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:09,907 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:09,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-08-27 14:10:09,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:10:09,909 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:09,930 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:10:09,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:09,953 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:09,953 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:09,953 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:09,953 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:09,953 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:10:09,953 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:09,953 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:09,953 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:09,953 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration3_Loop [2021-08-27 14:10:09,953 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:09,953 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:09,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:09,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:09,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:09,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:10,016 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:10,019 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:10:10,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:10,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:10,029 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:10,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-08-27 14:10:10,035 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:10,043 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:10,043 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:10,043 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:10,043 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:10,054 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:10,054 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:10,074 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:10,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:10,092 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:10,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:10,092 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:10,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-08-27 14:10:10,094 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:10,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:10,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:10,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:10,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:10,103 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:10,104 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:10,116 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:10,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:10,131 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:10,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:10,133 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:10,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-08-27 14:10:10,135 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:10,142 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:10,142 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:10,142 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:10,142 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:10,143 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:10,143 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:10,143 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:10,152 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:10,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:10,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:10,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:10,174 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:10,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-08-27 14:10:10,177 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:10,185 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:10,185 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:10,186 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:10,186 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:10,186 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:10,189 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:10,189 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:10,192 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:10:10,195 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:10:10,195 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 14:10:10,197 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:10,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:10,198 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:10,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-08-27 14:10:10,200 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:10:10,200 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:10:10,200 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:10:10,200 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-08-27 14:10:10,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-08-27 14:10:10,218 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:10:10,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:10,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:10:10,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:10,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:10:10,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:10,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:10:10,321 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 [2021-08-27 14:10:10,321 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 20 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:10,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:10,373 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 20 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 34 states and 50 transitions. Complement of second has 7 states. [2021-08-27 14:10:10,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-27 14:10:10,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:10,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-08-27 14:10:10,375 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 1 letters. Loop has 4 letters. [2021-08-27 14:10:10,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:10,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2021-08-27 14:10:10,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:10,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 1 letters. Loop has 8 letters. [2021-08-27 14:10:10,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:10,376 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 50 transitions. [2021-08-27 14:10:10,377 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2021-08-27 14:10:10,378 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 29 states and 43 transitions. [2021-08-27 14:10:10,378 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-08-27 14:10:10,378 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-08-27 14:10:10,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 43 transitions. [2021-08-27 14:10:10,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:10,379 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 43 transitions. [2021-08-27 14:10:10,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 43 transitions. [2021-08-27 14:10:10,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2021-08-27 14:10:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:10,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2021-08-27 14:10:10,381 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-08-27 14:10:10,381 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-08-27 14:10:10,381 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 14:10:10,381 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 35 transitions. [2021-08-27 14:10:10,382 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-08-27 14:10:10,382 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:10,382 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:10,382 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 14:10:10,382 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-27 14:10:10,382 INFO L791 eck$LassoCheckResult]: Stem: 154#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 155#L18-1 assume !!(main_~i~0 > 0); 151#L12 [2021-08-27 14:10:10,382 INFO L793 eck$LassoCheckResult]: Loop: 151#L12 assume !(1 == main_~i~0); 166#L12-2 assume !(10 == main_~i~0); 156#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 150#L18-1 assume !!(main_~i~0 > 0); 151#L12 [2021-08-27 14:10:10,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:10,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-08-27 14:10:10,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:10,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199786396] [2021-08-27 14:10:10,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:10,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:10,386 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:10,387 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:10,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:10,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1391414, now seen corresponding path program 1 times [2021-08-27 14:10:10,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:10,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816759551] [2021-08-27 14:10:10,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:10,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:10,391 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:10,393 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:10,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:10,393 INFO L82 PathProgramCache]: Analyzing trace with hash 925835935, now seen corresponding path program 1 times [2021-08-27 14:10:10,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:10,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650690436] [2021-08-27 14:10:10,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:10,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:10,396 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:10,399 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:10,431 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:10,431 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:10,431 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:10,431 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:10,431 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:10:10,431 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:10,432 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:10,432 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:10,432 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration4_Loop [2021-08-27 14:10:10,432 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:10,432 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:10,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:10,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:10,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:10,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:10,515 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:10,515 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:10:10,516 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:10,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:10,521 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:10,531 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:10,531 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:10,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-08-27 14:10:10,549 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:10,549 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: [] [2021-08-27 14:10:10,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:10,567 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:10,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:10,568 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:10,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-08-27 14:10:10,570 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:10,570 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:10,582 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:10,582 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:10,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:10,599 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:10,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:10,600 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:10,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-08-27 14:10:10,601 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:10,601 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:10,617 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:10,617 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=4} Honda state: {ULTIMATE.start_main_~up~0=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:10,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:10,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:10,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:10,632 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:10,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-08-27 14:10:10,634 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:10,635 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:10,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:10,658 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:10,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:10,659 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:10,668 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:10:10,669 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:10,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-08-27 14:10:10,721 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:10:10,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:10,726 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:10,726 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:10,726 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:10,726 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:10,726 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:10:10,726 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:10,726 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:10,726 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:10,726 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration4_Loop [2021-08-27 14:10:10,727 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:10,727 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:10,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:10,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:10,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:10,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:10,808 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:10,808 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:10:10,808 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:10,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:10,813 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:10,819 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:10,826 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:10,826 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:10,826 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:10,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:10,830 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:10,830 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:10,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-08-27 14:10:10,844 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:10,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:10,863 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:10,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:10,864 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:10,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-08-27 14:10:10,871 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:10,877 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:10,877 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:10,877 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:10,877 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-27 14:10:10,878 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:10,878 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-08-27 14:10:10,878 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:10,882 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:10,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:10,897 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:10,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:10,898 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:10,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-08-27 14:10:10,900 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:10,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:10,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:10,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:10,907 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:10,910 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:10,910 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:10,919 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:10,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-08-27 14:10:10,935 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:10,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:10,935 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:10,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-08-27 14:10:10,944 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:10,951 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:10,951 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:10,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:10,951 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-27 14:10:10,951 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:10,953 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-08-27 14:10:10,953 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:10,964 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:10:10,967 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-27 14:10:10,967 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:10:10,967 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:10,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:10,968 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:10,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-08-27 14:10:10,971 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:10:10,971 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:10:10,971 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:10:10,971 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-08-27 14:10:10,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:10,987 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:10:11,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:11,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:10:11,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:11,023 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:10:11,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:11,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:10:11,072 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 [2021-08-27 14:10:11,072 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 14 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:11,102 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 14. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 40 states and 58 transitions. Complement of second has 7 states. [2021-08-27 14:10:11,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-27 14:10:11,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:11,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-08-27 14:10:11,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2021-08-27 14:10:11,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:11,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2021-08-27 14:10:11,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:11,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2021-08-27 14:10:11,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:11,104 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 58 transitions. [2021-08-27 14:10:11,109 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-08-27 14:10:11,115 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 31 states and 48 transitions. [2021-08-27 14:10:11,115 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-08-27 14:10:11,115 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-08-27 14:10:11,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 48 transitions. [2021-08-27 14:10:11,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:11,115 INFO L681 BuchiCegarLoop]: Abstraction has 31 states and 48 transitions. [2021-08-27 14:10:11,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 48 transitions. [2021-08-27 14:10:11,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-08-27 14:10:11,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 30 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:11,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 48 transitions. [2021-08-27 14:10:11,117 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 48 transitions. [2021-08-27 14:10:11,117 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 48 transitions. [2021-08-27 14:10:11,118 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-27 14:10:11,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 48 transitions. [2021-08-27 14:10:11,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-08-27 14:10:11,118 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:11,118 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:11,119 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-08-27 14:10:11,119 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-27 14:10:11,119 INFO L791 eck$LassoCheckResult]: Stem: 255#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 256#L18-1 assume !!(main_~i~0 > 0); 265#L12 assume 1 == main_~i~0;main_~up~0 := 1; 267#L12-2 assume !(10 == main_~i~0); 272#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 273#L18-1 [2021-08-27 14:10:11,119 INFO L793 eck$LassoCheckResult]: Loop: 273#L18-1 assume !!(main_~i~0 > 0); 280#L12 assume !(1 == main_~i~0); 274#L12-2 assume !(10 == main_~i~0); 275#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 273#L18-1 [2021-08-27 14:10:11,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:11,119 INFO L82 PathProgramCache]: Analyzing trace with hash 29863751, now seen corresponding path program 1 times [2021-08-27 14:10:11,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:11,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023606376] [2021-08-27 14:10:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:11,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:11,123 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:11,126 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:11,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:11,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1236522, now seen corresponding path program 1 times [2021-08-27 14:10:11,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:11,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037629186] [2021-08-27 14:10:11,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:11,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:11,129 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:11,131 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:11,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:11,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1816492656, now seen corresponding path program 1 times [2021-08-27 14:10:11,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:11,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380339018] [2021-08-27 14:10:11,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:11,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:11,135 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:11,138 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:11,169 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:11,169 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:11,169 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:11,169 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:11,170 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:10:11,170 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:11,170 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:11,170 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:11,170 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Loop [2021-08-27 14:10:11,170 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:11,170 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:11,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:11,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:11,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:11,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:11,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:11,258 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:11,259 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:10:11,259 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:11,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:11,260 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:11,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-08-27 14:10:11,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:11,262 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:11,285 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:11,285 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:11,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:11,303 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:11,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:11,317 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:11,325 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:11,325 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:11,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-08-27 14:10:11,341 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:11,341 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: [] [2021-08-27 14:10:11,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-08-27 14:10:11,356 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:11,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:11,356 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:11,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-08-27 14:10:11,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:11,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:11,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:11,380 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:11,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:11,380 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:11,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-08-27 14:10:11,382 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:10:11,382 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:11,404 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:11,405 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=11} Honda state: {ULTIMATE.start_main_~i~0=11} Generalized eigenvectors: [{ULTIMATE.start_main_~i~0=1}, {ULTIMATE.start_main_~i~0=0}, {ULTIMATE.start_main_~i~0=0}] Lambdas: [1, 31, 31] Nus: [0, 0] [2021-08-27 14:10:11,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:11,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:11,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:11,429 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:11,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-08-27 14:10:11,435 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:11,435 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:11,447 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:11,447 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:11,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:11,493 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:11,493 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:11,494 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:11,494 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:11,494 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:10:11,494 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:11,494 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:11,494 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:11,494 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Lasso [2021-08-27 14:10:11,494 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:11,494 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:11,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:11,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:11,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:11,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:11,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:11,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:11,594 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:11,595 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:10:11,595 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:11,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:11,596 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:11,609 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:11,609 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:11,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-08-27 14:10:11,616 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:11,616 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:11,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:11,631 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:11,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:11,631 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:11,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-08-27 14:10:11,633 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:11,633 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:11,640 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:11,640 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:11,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:11,658 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:11,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:11,658 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:11,660 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:11,660 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:11,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-08-27 14:10:11,675 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:11,675 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_6=0} Honda state: {v_rep~unnamed0~0~false_6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:11,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-08-27 14:10:11,691 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:11,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:11,693 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:11,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:11,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:11,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-08-27 14:10:11,717 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:11,717 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:11,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:11,733 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:11,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:11,741 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:11,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-08-27 14:10:11,743 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:11,743 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:11,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:11,765 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:11,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:11,767 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:11,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-08-27 14:10:11,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:10:11,768 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:11,813 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:10:11,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:11,819 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:11,819 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:11,819 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:11,819 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:11,819 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:10:11,819 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:11,819 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:11,819 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:11,819 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Lasso [2021-08-27 14:10:11,819 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:11,819 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:11,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:11,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:11,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:11,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:11,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:11,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:11,917 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:11,918 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:10:11,918 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:11,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:11,922 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:11,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-08-27 14:10:11,924 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:11,930 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:11,931 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:11,931 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:11,931 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:11,931 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:11,931 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:11,931 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:11,932 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:11,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-08-27 14:10:11,947 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:11,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:11,948 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:11,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-08-27 14:10:11,950 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:11,956 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:11,956 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:11,956 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:11,956 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:11,956 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:11,956 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:11,956 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:11,960 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:11,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:11,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:11,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:11,978 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:11,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-08-27 14:10:11,980 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:11,986 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:11,986 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:11,986 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:11,986 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:11,988 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:11,988 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:12,003 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:12,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-08-27 14:10:12,018 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:12,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:12,019 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:12,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-08-27 14:10:12,020 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:12,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:12,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:12,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:12,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:12,029 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:12,029 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:12,032 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:12,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:12,047 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:12,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:12,047 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:12,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-08-27 14:10:12,049 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:12,055 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:12,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:12,056 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-27 14:10:12,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:12,061 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-08-27 14:10:12,061 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-08-27 14:10:12,084 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:10:12,100 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2021-08-27 14:10:12,100 INFO L444 ModelExtractionUtils]: 3 out of 11 variables were initially zero. Simplification set additionally 3 variables to zero. [2021-08-27 14:10:12,101 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:12,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:12,113 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:12,145 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:10:12,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-08-27 14:10:12,161 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2021-08-27 14:10:12,161 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:10:12,161 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 21 Supporting invariants [-1*ULTIMATE.start_main_~i~0 + 10 >= 0] [2021-08-27 14:10:12,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:12,181 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-08-27 14:10:12,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:12,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:10:12,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:12,239 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 14:10:12,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:10:12,300 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2021-08-27 14:10:12,300 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 48 transitions. cyclomatic complexity: 21 Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:12,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:12,352 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 48 transitions. cyclomatic complexity: 21. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 45 states and 67 transitions. Complement of second has 8 states. [2021-08-27 14:10:12,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-27 14:10:12,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:12,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2021-08-27 14:10:12,353 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 5 letters. Loop has 4 letters. [2021-08-27 14:10:12,353 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:12,353 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 9 letters. Loop has 4 letters. [2021-08-27 14:10:12,353 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:12,353 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 5 letters. Loop has 8 letters. [2021-08-27 14:10:12,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:12,354 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 67 transitions. [2021-08-27 14:10:12,354 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-08-27 14:10:12,355 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 44 states and 66 transitions. [2021-08-27 14:10:12,355 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-08-27 14:10:12,355 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-08-27 14:10:12,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 66 transitions. [2021-08-27 14:10:12,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:12,355 INFO L681 BuchiCegarLoop]: Abstraction has 44 states and 66 transitions. [2021-08-27 14:10:12,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 66 transitions. [2021-08-27 14:10:12,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-08-27 14:10:12,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 40 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:12,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 63 transitions. [2021-08-27 14:10:12,358 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2021-08-27 14:10:12,358 INFO L587 BuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2021-08-27 14:10:12,358 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-08-27 14:10:12,358 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 63 transitions. [2021-08-27 14:10:12,358 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-08-27 14:10:12,358 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:12,359 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:12,359 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2021-08-27 14:10:12,359 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-27 14:10:12,359 INFO L791 eck$LassoCheckResult]: Stem: 394#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 395#L18-1 assume !!(main_~i~0 > 0); 411#L12 assume 1 == main_~i~0;main_~up~0 := 1; 407#L12-2 assume !(10 == main_~i~0); 406#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 405#L18-1 assume !!(main_~i~0 > 0); 402#L12 assume !(1 == main_~i~0); 403#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 428#L15-1 [2021-08-27 14:10:12,359 INFO L793 eck$LassoCheckResult]: Loop: 428#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 427#L18-1 assume !!(main_~i~0 > 0); 424#L12 assume !(1 == main_~i~0); 425#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 428#L15-1 [2021-08-27 14:10:12,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:12,360 INFO L82 PathProgramCache]: Analyzing trace with hash 612785863, now seen corresponding path program 1 times [2021-08-27 14:10:12,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:12,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707969245] [2021-08-27 14:10:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:12,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:12,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:10:12,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:12,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707969245] [2021-08-27 14:10:12,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707969245] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:12,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41896789] [2021-08-27 14:10:12,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:12,378 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:12,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:12,379 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:12,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-08-27 14:10:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:12,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 14:10:12,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:12,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:10:12,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41896789] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:12,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:12,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-08-27 14:10:12,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901546660] [2021-08-27 14:10:12,423 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:10:12,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:12,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1737972, now seen corresponding path program 2 times [2021-08-27 14:10:12,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:12,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685085414] [2021-08-27 14:10:12,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:12,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:12,430 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:12,436 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:12,458 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:12,458 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:12,458 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:12,459 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:12,459 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:10:12,459 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:12,459 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:12,459 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:12,459 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration6_Loop [2021-08-27 14:10:12,459 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:12,459 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:12,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:12,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:12,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:12,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:12,514 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:12,514 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:10:12,514 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:12,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:12,515 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:12,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-08-27 14:10:12,523 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:12,523 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:12,534 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:12,534 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:12,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:12,551 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:12,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:12,552 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:12,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-08-27 14:10:12,553 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:12,553 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:12,565 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:12,565 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_8=1} Honda state: {v_rep~unnamed0~0~true_8=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:12,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-08-27 14:10:12,580 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:12,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:12,580 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:12,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-08-27 14:10:12,582 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:12,582 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:12,593 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:12,593 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_8=0} Honda state: {v_rep~unnamed0~0~false_8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:12,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-08-27 14:10:12,608 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:12,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:12,609 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:12,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-08-27 14:10:12,618 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:12,618 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:12,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:12,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:12,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:12,640 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:12,645 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:10:12,645 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:12,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-08-27 14:10:12,720 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:10:12,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:12,723 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:12,723 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:12,723 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:12,723 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:12,724 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:10:12,724 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:12,724 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:12,724 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:12,724 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration6_Loop [2021-08-27 14:10:12,724 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:12,724 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:12,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:12,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:12,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:12,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:12,786 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:12,786 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:10:12,786 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:12,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:12,787 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:12,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-08-27 14:10:12,789 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:12,795 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:12,795 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:12,795 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:12,795 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-08-27 14:10:12,795 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:12,796 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-08-27 14:10:12,796 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:12,798 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:12,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-08-27 14:10:12,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:12,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:12,813 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:12,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-08-27 14:10:12,815 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:12,821 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:12,821 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:12,822 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:12,822 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:12,823 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:12,823 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:12,829 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:12,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:12,844 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:12,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:12,845 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:12,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-08-27 14:10:12,847 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:12,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:12,853 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:12,853 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:12,853 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:12,854 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:12,854 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:12,864 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:12,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:12,879 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:12,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:12,880 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:12,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-08-27 14:10:12,882 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:12,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:12,888 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:12,888 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:12,888 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:12,888 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:12,889 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:12,889 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:12,890 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:10:12,892 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:10:12,892 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 14:10:12,892 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:12,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:12,893 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:12,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-08-27 14:10:12,895 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:10:12,895 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:10:12,895 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:10:12,895 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-08-27 14:10:12,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-08-27 14:10:12,911 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:10:12,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:12,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:10:12,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:12,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:10:12,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:12,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:10:12,981 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 [2021-08-27 14:10:12,981 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 63 transitions. cyclomatic complexity: 27 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:13,008 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 63 transitions. cyclomatic complexity: 27. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 104 states and 159 transitions. Complement of second has 7 states. [2021-08-27 14:10:13,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-27 14:10:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-08-27 14:10:13,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2021-08-27 14:10:13,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:13,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 4 letters. [2021-08-27 14:10:13,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:13,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 8 letters. [2021-08-27 14:10:13,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:13,011 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 159 transitions. [2021-08-27 14:10:13,012 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-08-27 14:10:13,019 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 86 states and 132 transitions. [2021-08-27 14:10:13,020 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-08-27 14:10:13,020 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-08-27 14:10:13,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 132 transitions. [2021-08-27 14:10:13,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:13,020 INFO L681 BuchiCegarLoop]: Abstraction has 86 states and 132 transitions. [2021-08-27 14:10:13,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states and 132 transitions. [2021-08-27 14:10:13,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 81. [2021-08-27 14:10:13,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 81 states have (on average 1.5555555555555556) internal successors, (126), 80 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:13,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 126 transitions. [2021-08-27 14:10:13,025 INFO L704 BuchiCegarLoop]: Abstraction has 81 states and 126 transitions. [2021-08-27 14:10:13,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:13,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 14:10:13,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 14:10:13,026 INFO L87 Difference]: Start difference. First operand 81 states and 126 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:13,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:13,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:13,053 INFO L93 Difference]: Finished difference Result 115 states and 174 transitions. [2021-08-27 14:10:13,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 14:10:13,054 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 115 states and 174 transitions. [2021-08-27 14:10:13,055 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 36 [2021-08-27 14:10:13,056 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 115 states to 115 states and 174 transitions. [2021-08-27 14:10:13,056 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65 [2021-08-27 14:10:13,056 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2021-08-27 14:10:13,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 174 transitions. [2021-08-27 14:10:13,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:13,056 INFO L681 BuchiCegarLoop]: Abstraction has 115 states and 174 transitions. [2021-08-27 14:10:13,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 174 transitions. [2021-08-27 14:10:13,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2021-08-27 14:10:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 97 states have (on average 1.5463917525773196) internal successors, (150), 96 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:13,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 150 transitions. [2021-08-27 14:10:13,062 INFO L704 BuchiCegarLoop]: Abstraction has 97 states and 150 transitions. [2021-08-27 14:10:13,062 INFO L587 BuchiCegarLoop]: Abstraction has 97 states and 150 transitions. [2021-08-27 14:10:13,062 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-08-27 14:10:13,062 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 97 states and 150 transitions. [2021-08-27 14:10:13,063 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2021-08-27 14:10:13,063 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:13,063 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:13,064 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-08-27 14:10:13,064 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-27 14:10:13,064 INFO L791 eck$LassoCheckResult]: Stem: 821#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 822#L18-1 assume !!(main_~i~0 > 0); 834#L12 assume 1 == main_~i~0;main_~up~0 := 1; 830#L12-2 assume !(10 == main_~i~0); 828#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 829#L18-1 assume !!(main_~i~0 > 0); 881#L12 assume !(1 == main_~i~0); 875#L12-2 assume !(10 == main_~i~0); 890#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 871#L18-1 [2021-08-27 14:10:13,064 INFO L793 eck$LassoCheckResult]: Loop: 871#L18-1 assume !!(main_~i~0 > 0); 880#L12 assume 1 == main_~i~0;main_~up~0 := 1; 863#L12-2 assume !(10 == main_~i~0); 877#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 871#L18-1 [2021-08-27 14:10:13,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:13,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1816492658, now seen corresponding path program 1 times [2021-08-27 14:10:13,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:13,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480325335] [2021-08-27 14:10:13,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:13,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 14:10:13,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:13,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480325335] [2021-08-27 14:10:13,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480325335] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:10:13,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:10:13,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 14:10:13,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904663605] [2021-08-27 14:10:13,077 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:10:13,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:13,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1234602, now seen corresponding path program 1 times [2021-08-27 14:10:13,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:13,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431043391] [2021-08-27 14:10:13,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:13,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:13,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:10:13,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:13,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431043391] [2021-08-27 14:10:13,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431043391] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:10:13,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:10:13,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 14:10:13,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287088220] [2021-08-27 14:10:13,087 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:10:13,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:13,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 14:10:13,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 14:10:13,088 INFO L87 Difference]: Start difference. First operand 97 states and 150 transitions. cyclomatic complexity: 64 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:13,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:13,094 INFO L93 Difference]: Finished difference Result 77 states and 103 transitions. [2021-08-27 14:10:13,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 14:10:13,094 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 77 states and 103 transitions. [2021-08-27 14:10:13,095 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-08-27 14:10:13,095 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 77 states to 63 states and 81 transitions. [2021-08-27 14:10:13,095 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-08-27 14:10:13,095 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2021-08-27 14:10:13,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 81 transitions. [2021-08-27 14:10:13,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:13,096 INFO L681 BuchiCegarLoop]: Abstraction has 63 states and 81 transitions. [2021-08-27 14:10:13,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 81 transitions. [2021-08-27 14:10:13,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2021-08-27 14:10:13,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 60 states have (on average 1.3) internal successors, (78), 59 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 78 transitions. [2021-08-27 14:10:13,098 INFO L704 BuchiCegarLoop]: Abstraction has 60 states and 78 transitions. [2021-08-27 14:10:13,098 INFO L587 BuchiCegarLoop]: Abstraction has 60 states and 78 transitions. [2021-08-27 14:10:13,098 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-08-27 14:10:13,098 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 78 transitions. [2021-08-27 14:10:13,098 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-08-27 14:10:13,098 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:13,098 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:13,099 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 2, 2, 2, 1, 1, 1] [2021-08-27 14:10:13,099 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-27 14:10:13,099 INFO L791 eck$LassoCheckResult]: Stem: 997#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 998#L18-1 assume !!(main_~i~0 > 0); 1039#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1044#L12-2 assume !(10 == main_~i~0); 1008#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 999#L18-1 assume !!(main_~i~0 > 0); 1000#L12 assume !(1 == main_~i~0); 1051#L12-2 assume !(10 == main_~i~0); 1049#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1047#L18-1 assume !!(main_~i~0 > 0); 1005#L12 assume !(1 == main_~i~0); 1006#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1003#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1001#L18-1 assume !!(main_~i~0 > 0); 1002#L12 assume 1 == main_~i~0;main_~up~0 := 1; 993#L12-2 [2021-08-27 14:10:13,099 INFO L793 eck$LassoCheckResult]: Loop: 993#L12-2 assume !(10 == main_~i~0); 994#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1043#L18-1 assume !!(main_~i~0 > 0); 1042#L12 assume 1 == main_~i~0;main_~up~0 := 1; 993#L12-2 [2021-08-27 14:10:13,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:13,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1399375584, now seen corresponding path program 1 times [2021-08-27 14:10:13,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:13,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080312853] [2021-08-27 14:10:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:13,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-08-27 14:10:13,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:13,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080312853] [2021-08-27 14:10:13,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080312853] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:10:13,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:10:13,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 14:10:13,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177956237] [2021-08-27 14:10:13,119 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:10:13,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:13,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1573480, now seen corresponding path program 1 times [2021-08-27 14:10:13,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:13,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176404865] [2021-08-27 14:10:13,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:13,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:13,122 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:13,124 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:13,144 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:13,144 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:13,144 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:13,144 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:13,144 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:10:13,144 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:13,145 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:13,145 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:13,145 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration8_Loop [2021-08-27 14:10:13,145 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:13,145 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:13,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:13,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:13,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:13,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:13,189 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:13,189 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:10:13,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:13,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:13,190 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:13,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-08-27 14:10:13,191 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:13,191 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:13,203 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:13,203 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_10=0} Honda state: {v_rep~unnamed0~0~false_10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:13,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2021-08-27 14:10:13,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:13,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:13,218 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:13,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-08-27 14:10:13,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:13,220 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:13,226 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:13,226 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:13,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-08-27 14:10:13,242 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:13,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:13,243 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:13,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-08-27 14:10:13,245 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:13,245 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:13,259 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:13,259 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_10=1} Honda state: {v_rep~unnamed0~0~true_10=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:13,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:13,279 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:13,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:13,279 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:13,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-08-27 14:10:13,281 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:13,281 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:13,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-08-27 14:10:13,303 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:13,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:13,304 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:13,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-08-27 14:10:13,306 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:10:13,306 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:13,358 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:10:13,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-08-27 14:10:13,361 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:13,361 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:13,361 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:13,361 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:13,361 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:10:13,361 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:13,361 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:13,361 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:13,361 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration8_Loop [2021-08-27 14:10:13,361 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:13,361 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:13,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:13,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:13,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:13,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:13,414 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:13,414 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:10:13,415 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:13,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:13,415 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:13,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-08-27 14:10:13,417 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:13,423 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:13,423 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:13,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:13,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:13,425 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:13,425 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:13,437 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:13,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-08-27 14:10:13,453 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:13,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:13,453 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:13,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-08-27 14:10:13,455 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:13,461 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:13,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:13,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:13,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:13,463 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:13,463 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:13,480 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:13,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-08-27 14:10:13,495 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:13,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:13,496 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:13,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-08-27 14:10:13,505 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:13,511 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:13,511 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:13,511 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:13,511 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:13,511 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:13,512 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:13,512 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:13,513 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:13,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2021-08-27 14:10:13,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:13,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:13,529 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:13,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-08-27 14:10:13,530 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:13,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:13,536 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:13,536 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:13,536 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:13,536 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:13,537 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:13,537 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:13,559 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:10:13,573 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:10:13,573 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:10:13,573 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:13,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:13,580 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:13,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-08-27 14:10:13,582 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:10:13,582 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:10:13,582 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:10:13,582 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2021-08-27 14:10:13,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2021-08-27 14:10:13,597 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:10:13,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:13,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:10:13,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:13,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 14:10:13,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:10:13,685 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 [2021-08-27 14:10:13,685 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 78 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:13,725 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 78 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 119 states and 154 transitions. Complement of second has 9 states. [2021-08-27 14:10:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-27 14:10:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:13,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-08-27 14:10:13,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 15 letters. Loop has 4 letters. [2021-08-27 14:10:13,726 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:13,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 19 letters. Loop has 4 letters. [2021-08-27 14:10:13,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:13,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 15 letters. Loop has 8 letters. [2021-08-27 14:10:13,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:13,727 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 154 transitions. [2021-08-27 14:10:13,728 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 25 [2021-08-27 14:10:13,728 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 115 states and 148 transitions. [2021-08-27 14:10:13,728 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2021-08-27 14:10:13,729 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-08-27 14:10:13,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 148 transitions. [2021-08-27 14:10:13,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:13,729 INFO L681 BuchiCegarLoop]: Abstraction has 115 states and 148 transitions. [2021-08-27 14:10:13,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 148 transitions. [2021-08-27 14:10:13,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2021-08-27 14:10:13,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 101 states have (on average 1.306930693069307) internal successors, (132), 100 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:13,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 132 transitions. [2021-08-27 14:10:13,732 INFO L704 BuchiCegarLoop]: Abstraction has 101 states and 132 transitions. [2021-08-27 14:10:13,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:13,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 14:10:13,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 14:10:13,733 INFO L87 Difference]: Start difference. First operand 101 states and 132 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:13,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:13,745 INFO L93 Difference]: Finished difference Result 97 states and 122 transitions. [2021-08-27 14:10:13,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 14:10:13,746 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 122 transitions. [2021-08-27 14:10:13,747 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-08-27 14:10:13,753 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 92 states and 116 transitions. [2021-08-27 14:10:13,753 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-08-27 14:10:13,754 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-08-27 14:10:13,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 116 transitions. [2021-08-27 14:10:13,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:13,754 INFO L681 BuchiCegarLoop]: Abstraction has 92 states and 116 transitions. [2021-08-27 14:10:13,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states and 116 transitions. [2021-08-27 14:10:13,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 74. [2021-08-27 14:10:13,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 73 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:13,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 95 transitions. [2021-08-27 14:10:13,761 INFO L704 BuchiCegarLoop]: Abstraction has 74 states and 95 transitions. [2021-08-27 14:10:13,761 INFO L587 BuchiCegarLoop]: Abstraction has 74 states and 95 transitions. [2021-08-27 14:10:13,761 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-08-27 14:10:13,762 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 95 transitions. [2021-08-27 14:10:13,762 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-08-27 14:10:13,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:13,762 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:13,763 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 3, 3, 2, 2, 2, 1, 1] [2021-08-27 14:10:13,763 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-27 14:10:13,763 INFO L791 eck$LassoCheckResult]: Stem: 1463#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1464#L18-1 assume !!(main_~i~0 > 0); 1511#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1509#L12-2 assume !(10 == main_~i~0); 1507#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1489#L18-1 assume !!(main_~i~0 > 0); 1481#L12 assume !(1 == main_~i~0); 1487#L12-2 assume !(10 == main_~i~0); 1485#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1480#L18-1 assume !!(main_~i~0 > 0); 1477#L12 assume !(1 == main_~i~0); 1455#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1456#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1465#L18-1 assume !!(main_~i~0 > 0); 1524#L12 assume !(1 == main_~i~0); 1518#L12-2 assume !(10 == main_~i~0); 1522#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1520#L18-1 assume !!(main_~i~0 > 0); 1517#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1472#L12-2 [2021-08-27 14:10:13,763 INFO L793 eck$LassoCheckResult]: Loop: 1472#L12-2 assume !(10 == main_~i~0); 1469#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1470#L18-1 assume !!(main_~i~0 > 0); 1506#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1472#L12-2 [2021-08-27 14:10:13,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:13,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1376811083, now seen corresponding path program 2 times [2021-08-27 14:10:13,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:13,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303509901] [2021-08-27 14:10:13,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:13,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:13,788 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 14:10:13,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:13,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303509901] [2021-08-27 14:10:13,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303509901] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:13,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134050668] [2021-08-27 14:10:13,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 14:10:13,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:13,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:13,789 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:13,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-08-27 14:10:13,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 14:10:13,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 14:10:13,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:10:13,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:13,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 14:10:13,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134050668] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:13,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:13,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-08-27 14:10:13,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197883202] [2021-08-27 14:10:13,890 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:10:13,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:13,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1573480, now seen corresponding path program 2 times [2021-08-27 14:10:13,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:13,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112874698] [2021-08-27 14:10:13,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:13,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:13,894 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:13,895 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:13,917 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:13,917 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:13,917 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:13,917 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:13,917 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:10:13,917 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:13,917 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:13,917 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:13,918 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration9_Loop [2021-08-27 14:10:13,918 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:13,918 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:13,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:13,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:13,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:13,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:13,962 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:13,962 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:10:13,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:13,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:13,964 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:13,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-08-27 14:10:13,967 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:13,967 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:13,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:13,991 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:13,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:13,991 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:13,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-08-27 14:10:13,993 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:10:13,993 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:14,043 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:10:14,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2021-08-27 14:10:14,048 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:14,048 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:14,048 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:14,048 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:14,048 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:10:14,048 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:14,048 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:14,048 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:14,048 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration9_Loop [2021-08-27 14:10:14,048 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:14,048 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:14,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:14,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:14,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:14,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:14,099 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:14,099 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:10:14,099 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:14,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:14,100 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:14,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-08-27 14:10:14,102 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:14,108 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:14,108 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:14,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:14,108 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:14,108 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:14,109 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:14,109 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:14,110 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:10:14,111 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:10:14,112 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:10:14,112 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:14,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:14,113 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:14,117 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:10:14,117 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:10:14,117 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:10:14,117 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2021-08-27 14:10:14,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-08-27 14:10:14,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:14,133 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:10:14,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:14,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:10:14,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:14,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:14,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 14:10:14,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:10:14,257 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 [2021-08-27 14:10:14,257 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 74 states and 95 transitions. cyclomatic complexity: 30 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:14,303 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 74 states and 95 transitions. cyclomatic complexity: 30. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 133 states and 164 transitions. Complement of second has 9 states. [2021-08-27 14:10:14,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-27 14:10:14,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2021-08-27 14:10:14,304 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 19 letters. Loop has 4 letters. [2021-08-27 14:10:14,304 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:14,304 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 14:10:14,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:14,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:10:14,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:14,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 14:10:14,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:10:14,412 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 [2021-08-27 14:10:14,412 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 74 states and 95 transitions. cyclomatic complexity: 30 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:14,445 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 74 states and 95 transitions. cyclomatic complexity: 30. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 133 states and 164 transitions. Complement of second has 9 states. [2021-08-27 14:10:14,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-27 14:10:14,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:14,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2021-08-27 14:10:14,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 19 letters. Loop has 4 letters. [2021-08-27 14:10:14,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:14,446 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 14:10:14,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:14,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:10:14,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:14,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 14:10:14,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:10:14,533 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 [2021-08-27 14:10:14,533 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 74 states and 95 transitions. cyclomatic complexity: 30 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:14,579 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 74 states and 95 transitions. cyclomatic complexity: 30. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 142 states and 176 transitions. Complement of second has 8 states. [2021-08-27 14:10:14,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-27 14:10:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:14,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2021-08-27 14:10:14,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 19 letters. Loop has 4 letters. [2021-08-27 14:10:14,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:14,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 23 letters. Loop has 4 letters. [2021-08-27 14:10:14,581 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:14,581 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 19 letters. Loop has 8 letters. [2021-08-27 14:10:14,581 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:14,581 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 176 transitions. [2021-08-27 14:10:14,582 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2021-08-27 14:10:14,582 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 98 states and 123 transitions. [2021-08-27 14:10:14,583 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2021-08-27 14:10:14,583 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-08-27 14:10:14,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 123 transitions. [2021-08-27 14:10:14,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:14,583 INFO L681 BuchiCegarLoop]: Abstraction has 98 states and 123 transitions. [2021-08-27 14:10:14,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 123 transitions. [2021-08-27 14:10:14,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 79. [2021-08-27 14:10:14,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 79 states have (on average 1.2784810126582278) internal successors, (101), 78 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2021-08-27 14:10:14,585 INFO L704 BuchiCegarLoop]: Abstraction has 79 states and 101 transitions. [2021-08-27 14:10:14,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:14,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 14:10:14,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-27 14:10:14,586 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:14,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:14,605 INFO L93 Difference]: Finished difference Result 129 states and 157 transitions. [2021-08-27 14:10:14,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 14:10:14,606 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 129 states and 157 transitions. [2021-08-27 14:10:14,606 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2021-08-27 14:10:14,607 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 129 states to 125 states and 153 transitions. [2021-08-27 14:10:14,607 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-08-27 14:10:14,607 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-08-27 14:10:14,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 153 transitions. [2021-08-27 14:10:14,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:14,607 INFO L681 BuchiCegarLoop]: Abstraction has 125 states and 153 transitions. [2021-08-27 14:10:14,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states and 153 transitions. [2021-08-27 14:10:14,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 91. [2021-08-27 14:10:14,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 91 states have (on average 1.2417582417582418) internal successors, (113), 90 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:14,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 113 transitions. [2021-08-27 14:10:14,609 INFO L704 BuchiCegarLoop]: Abstraction has 91 states and 113 transitions. [2021-08-27 14:10:14,609 INFO L587 BuchiCegarLoop]: Abstraction has 91 states and 113 transitions. [2021-08-27 14:10:14,610 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-08-27 14:10:14,610 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 91 states and 113 transitions. [2021-08-27 14:10:14,610 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-08-27 14:10:14,610 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:14,610 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:14,611 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 4, 4, 3, 2, 2, 1, 1] [2021-08-27 14:10:14,611 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 4, 3, 2, 1, 1] [2021-08-27 14:10:14,611 INFO L791 eck$LassoCheckResult]: Stem: 2465#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2466#L18-1 assume !!(main_~i~0 > 0); 2519#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2520#L12-2 assume !(10 == main_~i~0); 2536#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2467#L18-1 assume !!(main_~i~0 > 0); 2468#L12 assume !(1 == main_~i~0); 2546#L12-2 assume !(10 == main_~i~0); 2545#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2544#L18-1 assume !!(main_~i~0 > 0); 2498#L12 assume !(1 == main_~i~0); 2543#L12-2 assume !(10 == main_~i~0); 2500#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2497#L18-1 assume !!(main_~i~0 > 0); 2495#L12 assume !(1 == main_~i~0); 2493#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2471#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2472#L18-1 assume !!(main_~i~0 > 0); 2517#L12 assume !(1 == main_~i~0); 2509#L12-2 assume !(10 == main_~i~0); 2515#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2514#L18-1 assume !!(main_~i~0 > 0); 2508#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2505#L12-2 [2021-08-27 14:10:14,611 INFO L793 eck$LassoCheckResult]: Loop: 2505#L12-2 assume !(10 == main_~i~0); 2504#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2503#L18-1 assume !!(main_~i~0 > 0); 2502#L12 assume !(1 == main_~i~0); 2501#L12-2 assume !(10 == main_~i~0); 2499#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2496#L18-1 assume !!(main_~i~0 > 0); 2494#L12 assume !(1 == main_~i~0); 2491#L12-2 assume !(10 == main_~i~0); 2489#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2485#L18-1 assume !!(main_~i~0 > 0); 2486#L12 assume !(1 == main_~i~0); 2492#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2478#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2479#L18-1 assume !!(main_~i~0 > 0); 2483#L12 assume !(1 == main_~i~0); 2481#L12-2 assume !(10 == main_~i~0); 2482#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2513#L18-1 assume !!(main_~i~0 > 0); 2510#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2505#L12-2 [2021-08-27 14:10:14,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:14,611 INFO L82 PathProgramCache]: Analyzing trace with hash 2134050740, now seen corresponding path program 3 times [2021-08-27 14:10:14,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:14,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675854551] [2021-08-27 14:10:14,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:14,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:14,652 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 14:10:14,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:14,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675854551] [2021-08-27 14:10:14,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675854551] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:14,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123408361] [2021-08-27 14:10:14,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 14:10:14,653 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:14,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:14,653 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:14,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-08-27 14:10:14,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-27 14:10:14,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 14:10:14,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:10:14,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:14,810 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-08-27 14:10:14,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123408361] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:14,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:14,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2021-08-27 14:10:14,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502815231] [2021-08-27 14:10:14,810 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:10:14,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:14,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1620775762, now seen corresponding path program 1 times [2021-08-27 14:10:14,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:14,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057632041] [2021-08-27 14:10:14,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:14,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-27 14:10:14,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:14,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057632041] [2021-08-27 14:10:14,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057632041] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:14,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847557228] [2021-08-27 14:10:14,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:14,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:14,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:14,837 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:14,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-08-27 14:10:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:14,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:10:14,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:14,962 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-27 14:10:14,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847557228] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:14,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:14,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-27 14:10:14,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923787196] [2021-08-27 14:10:14,962 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:10:14,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:14,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 14:10:14,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-27 14:10:14,963 INFO L87 Difference]: Start difference. First operand 91 states and 113 transitions. cyclomatic complexity: 31 Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:14,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:14,998 INFO L93 Difference]: Finished difference Result 116 states and 144 transitions. [2021-08-27 14:10:14,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 14:10:14,998 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 144 transitions. [2021-08-27 14:10:14,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2021-08-27 14:10:14,999 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 116 states and 144 transitions. [2021-08-27 14:10:14,999 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-08-27 14:10:14,999 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-08-27 14:10:15,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 144 transitions. [2021-08-27 14:10:15,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:15,000 INFO L681 BuchiCegarLoop]: Abstraction has 116 states and 144 transitions. [2021-08-27 14:10:15,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 144 transitions. [2021-08-27 14:10:15,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2021-08-27 14:10:15,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 103 states have (on average 1.233009708737864) internal successors, (127), 102 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:15,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 127 transitions. [2021-08-27 14:10:15,002 INFO L704 BuchiCegarLoop]: Abstraction has 103 states and 127 transitions. [2021-08-27 14:10:15,002 INFO L587 BuchiCegarLoop]: Abstraction has 103 states and 127 transitions. [2021-08-27 14:10:15,002 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-08-27 14:10:15,002 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 103 states and 127 transitions. [2021-08-27 14:10:15,002 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2021-08-27 14:10:15,003 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:15,003 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:15,003 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 5, 5, 3, 3, 2, 1, 1] [2021-08-27 14:10:15,003 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 5, 3, 3, 1, 1] [2021-08-27 14:10:15,003 INFO L791 eck$LassoCheckResult]: Stem: 2810#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2811#L18-1 assume !!(main_~i~0 > 0); 2846#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2843#L12-2 assume !(10 == main_~i~0); 2840#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2838#L18-1 assume !!(main_~i~0 > 0); 2836#L12 assume !(1 == main_~i~0); 2835#L12-2 assume !(10 == main_~i~0); 2834#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2833#L18-1 assume !!(main_~i~0 > 0); 2830#L12 assume !(1 == main_~i~0); 2832#L12-2 assume !(10 == main_~i~0); 2831#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2829#L18-1 assume !!(main_~i~0 > 0); 2828#L12 assume !(1 == main_~i~0); 2827#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2816#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2817#L18-1 assume !!(main_~i~0 > 0); 2905#L12 assume !(1 == main_~i~0); 2904#L12-2 assume !(10 == main_~i~0); 2903#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2902#L18-1 assume !!(main_~i~0 > 0); 2901#L12 assume !(1 == main_~i~0); 2886#L12-2 assume !(10 == main_~i~0); 2893#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2889#L18-1 assume !!(main_~i~0 > 0); 2885#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2805#L12-2 [2021-08-27 14:10:15,004 INFO L793 eck$LassoCheckResult]: Loop: 2805#L12-2 assume !(10 == main_~i~0); 2806#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2821#L18-1 assume !!(main_~i~0 > 0); 2874#L12 assume !(1 == main_~i~0); 2871#L12-2 assume !(10 == main_~i~0); 2868#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2866#L18-1 assume !!(main_~i~0 > 0); 2864#L12 assume !(1 == main_~i~0); 2861#L12-2 assume !(10 == main_~i~0); 2859#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2857#L18-1 assume !!(main_~i~0 > 0); 2852#L12 assume !(1 == main_~i~0); 2853#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2822#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2823#L18-1 assume !!(main_~i~0 > 0); 2900#L12 assume !(1 == main_~i~0); 2898#L12-2 assume !(10 == main_~i~0); 2899#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2812#L18-1 assume !!(main_~i~0 > 0); 2813#L12 assume !(1 == main_~i~0); 2825#L12-2 assume !(10 == main_~i~0); 2826#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2890#L18-1 assume !!(main_~i~0 > 0); 2887#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2805#L12-2 [2021-08-27 14:10:15,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:15,004 INFO L82 PathProgramCache]: Analyzing trace with hash 442904351, now seen corresponding path program 4 times [2021-08-27 14:10:15,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:15,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262421241] [2021-08-27 14:10:15,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:15,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:15,032 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 47 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-08-27 14:10:15,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:15,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262421241] [2021-08-27 14:10:15,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262421241] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:15,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356068119] [2021-08-27 14:10:15,032 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 14:10:15,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:15,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:15,033 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:15,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-08-27 14:10:15,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 14:10:15,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 14:10:15,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 14:10:15,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:15,205 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 47 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-08-27 14:10:15,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356068119] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:15,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:15,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-27 14:10:15,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125870924] [2021-08-27 14:10:15,206 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:10:15,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:15,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1417462851, now seen corresponding path program 2 times [2021-08-27 14:10:15,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:15,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328999747] [2021-08-27 14:10:15,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:15,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-27 14:10:15,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:15,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328999747] [2021-08-27 14:10:15,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328999747] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:15,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471468273] [2021-08-27 14:10:15,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 14:10:15,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:15,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:15,245 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:15,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-08-27 14:10:15,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 14:10:15,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 14:10:15,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 14:10:15,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:15,401 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-27 14:10:15,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471468273] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:15,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:15,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-08-27 14:10:15,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508155151] [2021-08-27 14:10:15,402 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:10:15,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:15,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 14:10:15,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-27 14:10:15,403 INFO L87 Difference]: Start difference. First operand 103 states and 127 transitions. cyclomatic complexity: 33 Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:15,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:15,441 INFO L93 Difference]: Finished difference Result 132 states and 163 transitions. [2021-08-27 14:10:15,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 14:10:15,442 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 132 states and 163 transitions. [2021-08-27 14:10:15,443 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2021-08-27 14:10:15,443 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 132 states to 132 states and 163 transitions. [2021-08-27 14:10:15,443 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-08-27 14:10:15,444 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-08-27 14:10:15,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 132 states and 163 transitions. [2021-08-27 14:10:15,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:15,444 INFO L681 BuchiCegarLoop]: Abstraction has 132 states and 163 transitions. [2021-08-27 14:10:15,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states and 163 transitions. [2021-08-27 14:10:15,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 115. [2021-08-27 14:10:15,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 115 states have (on average 1.2260869565217392) internal successors, (141), 114 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:15,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 141 transitions. [2021-08-27 14:10:15,446 INFO L704 BuchiCegarLoop]: Abstraction has 115 states and 141 transitions. [2021-08-27 14:10:15,447 INFO L587 BuchiCegarLoop]: Abstraction has 115 states and 141 transitions. [2021-08-27 14:10:15,447 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-08-27 14:10:15,447 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 115 states and 141 transitions. [2021-08-27 14:10:15,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2021-08-27 14:10:15,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:15,448 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:15,448 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 6, 6, 4, 3, 2, 1, 1] [2021-08-27 14:10:15,448 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [7, 6, 6, 4, 3, 1, 1] [2021-08-27 14:10:15,449 INFO L791 eck$LassoCheckResult]: Stem: 3208#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3209#L18-1 assume !!(main_~i~0 > 0); 3252#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3249#L12-2 assume !(10 == main_~i~0); 3247#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3245#L18-1 assume !!(main_~i~0 > 0); 3244#L12 assume !(1 == main_~i~0); 3243#L12-2 assume !(10 == main_~i~0); 3242#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3239#L18-1 assume !!(main_~i~0 > 0); 3229#L12 assume !(1 == main_~i~0); 3232#L12-2 assume !(10 == main_~i~0); 3230#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3228#L18-1 assume !!(main_~i~0 > 0); 3226#L12 assume !(1 == main_~i~0); 3223#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3210#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3211#L18-1 assume !!(main_~i~0 > 0); 3269#L12 assume !(1 == main_~i~0); 3268#L12-2 assume !(10 == main_~i~0); 3267#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3266#L18-1 assume !!(main_~i~0 > 0); 3265#L12 assume !(1 == main_~i~0); 3264#L12-2 assume !(10 == main_~i~0); 3263#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3262#L18-1 assume !!(main_~i~0 > 0); 3261#L12 assume !(1 == main_~i~0); 3234#L12-2 assume !(10 == main_~i~0); 3240#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3237#L18-1 assume !!(main_~i~0 > 0); 3233#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3231#L12-2 [2021-08-27 14:10:15,449 INFO L793 eck$LassoCheckResult]: Loop: 3231#L12-2 assume !(10 == main_~i~0); 3216#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3204#L18-1 assume !!(main_~i~0 > 0); 3205#L12 assume !(1 == main_~i~0); 3295#L12-2 assume !(10 == main_~i~0); 3293#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3291#L18-1 assume !!(main_~i~0 > 0); 3289#L12 assume !(1 == main_~i~0); 3288#L12-2 assume !(10 == main_~i~0); 3278#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3285#L18-1 assume !!(main_~i~0 > 0); 3281#L12 assume !(1 == main_~i~0); 3277#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3201#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3217#L18-1 assume !!(main_~i~0 > 0); 3282#L12 assume !(1 == main_~i~0); 3279#L12-2 assume !(10 == main_~i~0); 3276#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3275#L18-1 assume !!(main_~i~0 > 0); 3274#L12 assume !(1 == main_~i~0); 3273#L12-2 assume !(10 == main_~i~0); 3272#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3271#L18-1 assume !!(main_~i~0 > 0); 3270#L12 assume !(1 == main_~i~0); 3236#L12-2 assume !(10 == main_~i~0); 3241#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3238#L18-1 assume !!(main_~i~0 > 0); 3235#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3231#L12-2 [2021-08-27 14:10:15,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:15,449 INFO L82 PathProgramCache]: Analyzing trace with hash 261204234, now seen corresponding path program 5 times [2021-08-27 14:10:15,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:15,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592833692] [2021-08-27 14:10:15,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:15,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 62 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-08-27 14:10:15,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:15,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592833692] [2021-08-27 14:10:15,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592833692] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:15,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358110837] [2021-08-27 14:10:15,479 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 14:10:15,479 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:15,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:15,481 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:15,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-08-27 14:10:15,589 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-08-27 14:10:15,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 14:10:15,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 14:10:15,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 62 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-08-27 14:10:15,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358110837] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:15,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:15,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-27 14:10:15,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776971475] [2021-08-27 14:10:15,668 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:10:15,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:15,668 INFO L82 PathProgramCache]: Analyzing trace with hash 2080061096, now seen corresponding path program 3 times [2021-08-27 14:10:15,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:15,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662817249] [2021-08-27 14:10:15,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:15,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:15,711 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 48 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-27 14:10:15,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:15,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662817249] [2021-08-27 14:10:15,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662817249] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:15,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017732021] [2021-08-27 14:10:15,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 14:10:15,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:15,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:15,716 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:15,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-08-27 14:10:15,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-08-27 14:10:15,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 14:10:15,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 14:10:15,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:15,895 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 48 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-27 14:10:15,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017732021] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:15,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:15,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-27 14:10:15,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348528388] [2021-08-27 14:10:15,895 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:10:15,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:15,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 14:10:15,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-27 14:10:15,896 INFO L87 Difference]: Start difference. First operand 115 states and 141 transitions. cyclomatic complexity: 35 Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:15,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:15,928 INFO L93 Difference]: Finished difference Result 148 states and 182 transitions. [2021-08-27 14:10:15,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 14:10:15,931 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 182 transitions. [2021-08-27 14:10:15,932 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 39 [2021-08-27 14:10:15,932 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 148 states and 182 transitions. [2021-08-27 14:10:15,933 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2021-08-27 14:10:15,933 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-08-27 14:10:15,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 148 states and 182 transitions. [2021-08-27 14:10:15,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:15,933 INFO L681 BuchiCegarLoop]: Abstraction has 148 states and 182 transitions. [2021-08-27 14:10:15,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states and 182 transitions. [2021-08-27 14:10:15,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 127. [2021-08-27 14:10:15,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 127 states have (on average 1.220472440944882) internal successors, (155), 126 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:15,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 155 transitions. [2021-08-27 14:10:15,935 INFO L704 BuchiCegarLoop]: Abstraction has 127 states and 155 transitions. [2021-08-27 14:10:15,935 INFO L587 BuchiCegarLoop]: Abstraction has 127 states and 155 transitions. [2021-08-27 14:10:15,935 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-08-27 14:10:15,935 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 127 states and 155 transitions. [2021-08-27 14:10:15,936 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-08-27 14:10:15,936 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:15,936 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:15,936 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 7, 7, 5, 3, 2, 1, 1] [2021-08-27 14:10:15,936 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [8, 7, 7, 5, 3, 1, 1] [2021-08-27 14:10:15,937 INFO L791 eck$LassoCheckResult]: Stem: 3656#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3657#L18-1 assume !!(main_~i~0 > 0); 3700#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3697#L12-2 assume !(10 == main_~i~0); 3695#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3693#L18-1 assume !!(main_~i~0 > 0); 3692#L12 assume !(1 == main_~i~0); 3691#L12-2 assume !(10 == main_~i~0); 3690#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3687#L18-1 assume !!(main_~i~0 > 0); 3677#L12 assume !(1 == main_~i~0); 3680#L12-2 assume !(10 == main_~i~0); 3678#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3676#L18-1 assume !!(main_~i~0 > 0); 3674#L12 assume !(1 == main_~i~0); 3671#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3658#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3659#L18-1 assume !!(main_~i~0 > 0); 3721#L12 assume !(1 == main_~i~0); 3720#L12-2 assume !(10 == main_~i~0); 3719#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3718#L18-1 assume !!(main_~i~0 > 0); 3717#L12 assume !(1 == main_~i~0); 3716#L12-2 assume !(10 == main_~i~0); 3715#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3714#L18-1 assume !!(main_~i~0 > 0); 3713#L12 assume !(1 == main_~i~0); 3712#L12-2 assume !(10 == main_~i~0); 3711#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3710#L18-1 assume !!(main_~i~0 > 0); 3709#L12 assume !(1 == main_~i~0); 3682#L12-2 assume !(10 == main_~i~0); 3688#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3685#L18-1 assume !!(main_~i~0 > 0); 3681#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3679#L12-2 [2021-08-27 14:10:15,937 INFO L793 eck$LassoCheckResult]: Loop: 3679#L12-2 assume !(10 == main_~i~0); 3664#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3665#L18-1 assume !!(main_~i~0 > 0); 3735#L12 assume !(1 == main_~i~0); 3736#L12-2 assume !(10 == main_~i~0); 3748#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3747#L18-1 assume !!(main_~i~0 > 0); 3745#L12 assume !(1 == main_~i~0); 3743#L12-2 assume !(10 == main_~i~0); 3738#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3742#L18-1 assume !!(main_~i~0 > 0); 3740#L12 assume !(1 == main_~i~0); 3737#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3649#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3666#L18-1 assume !!(main_~i~0 > 0); 3741#L12 assume !(1 == main_~i~0); 3739#L12-2 assume !(10 == main_~i~0); 3732#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3731#L18-1 assume !!(main_~i~0 > 0); 3730#L12 assume !(1 == main_~i~0); 3729#L12-2 assume !(10 == main_~i~0); 3728#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3727#L18-1 assume !!(main_~i~0 > 0); 3726#L12 assume !(1 == main_~i~0); 3725#L12-2 assume !(10 == main_~i~0); 3724#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3723#L18-1 assume !!(main_~i~0 > 0); 3722#L12 assume !(1 == main_~i~0); 3684#L12-2 assume !(10 == main_~i~0); 3689#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3686#L18-1 assume !!(main_~i~0 > 0); 3683#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3679#L12-2 [2021-08-27 14:10:15,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:15,937 INFO L82 PathProgramCache]: Analyzing trace with hash 759706997, now seen corresponding path program 6 times [2021-08-27 14:10:15,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:15,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441627889] [2021-08-27 14:10:15,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:15,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 77 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-08-27 14:10:15,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:15,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441627889] [2021-08-27 14:10:15,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441627889] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:15,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382680512] [2021-08-27 14:10:15,978 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 14:10:15,978 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:15,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:15,988 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:16,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-08-27 14:10:16,109 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-08-27 14:10:16,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 14:10:16,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 14:10:16,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:16,258 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 71 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-08-27 14:10:16,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382680512] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:16,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:16,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-08-27 14:10:16,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009006331] [2021-08-27 14:10:16,260 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:10:16,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:16,260 INFO L82 PathProgramCache]: Analyzing trace with hash 148227091, now seen corresponding path program 4 times [2021-08-27 14:10:16,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:16,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274219798] [2021-08-27 14:10:16,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:16,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:16,316 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 61 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-27 14:10:16,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:16,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274219798] [2021-08-27 14:10:16,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274219798] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:16,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896809069] [2021-08-27 14:10:16,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 14:10:16,317 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:16,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:16,321 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:16,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-08-27 14:10:16,449 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 14:10:16,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 14:10:16,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 14:10:16,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 61 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-27 14:10:16,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896809069] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:16,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:16,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-08-27 14:10:16,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425919865] [2021-08-27 14:10:16,561 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:10:16,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:16,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 14:10:16,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-08-27 14:10:16,561 INFO L87 Difference]: Start difference. First operand 127 states and 155 transitions. cyclomatic complexity: 37 Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:16,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:16,604 INFO L93 Difference]: Finished difference Result 164 states and 201 transitions. [2021-08-27 14:10:16,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 14:10:16,605 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 164 states and 201 transitions. [2021-08-27 14:10:16,606 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-08-27 14:10:16,606 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 164 states to 164 states and 201 transitions. [2021-08-27 14:10:16,607 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2021-08-27 14:10:16,607 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2021-08-27 14:10:16,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 164 states and 201 transitions. [2021-08-27 14:10:16,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:16,607 INFO L681 BuchiCegarLoop]: Abstraction has 164 states and 201 transitions. [2021-08-27 14:10:16,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states and 201 transitions. [2021-08-27 14:10:16,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 139. [2021-08-27 14:10:16,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 139 states have (on average 1.2158273381294964) internal successors, (169), 138 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:16,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 169 transitions. [2021-08-27 14:10:16,609 INFO L704 BuchiCegarLoop]: Abstraction has 139 states and 169 transitions. [2021-08-27 14:10:16,610 INFO L587 BuchiCegarLoop]: Abstraction has 139 states and 169 transitions. [2021-08-27 14:10:16,610 INFO L425 BuchiCegarLoop]: ======== Iteration 14============ [2021-08-27 14:10:16,610 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 139 states and 169 transitions. [2021-08-27 14:10:16,610 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 41 [2021-08-27 14:10:16,610 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:16,610 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:16,612 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 8, 8, 6, 3, 2, 1, 1] [2021-08-27 14:10:16,612 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [9, 8, 8, 6, 3, 1, 1] [2021-08-27 14:10:16,612 INFO L791 eck$LassoCheckResult]: Stem: 4163#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4164#L18-1 assume !!(main_~i~0 > 0); 4207#L12 assume 1 == main_~i~0;main_~up~0 := 1; 4204#L12-2 assume !(10 == main_~i~0); 4202#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4200#L18-1 assume !!(main_~i~0 > 0); 4199#L12 assume !(1 == main_~i~0); 4198#L12-2 assume !(10 == main_~i~0); 4197#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4194#L18-1 assume !!(main_~i~0 > 0); 4184#L12 assume !(1 == main_~i~0); 4187#L12-2 assume !(10 == main_~i~0); 4185#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4183#L18-1 assume !!(main_~i~0 > 0); 4181#L12 assume !(1 == main_~i~0); 4178#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 4165#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4166#L18-1 assume !!(main_~i~0 > 0); 4279#L12 assume !(1 == main_~i~0); 4278#L12-2 assume !(10 == main_~i~0); 4277#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4276#L18-1 assume !!(main_~i~0 > 0); 4275#L12 assume !(1 == main_~i~0); 4274#L12-2 assume !(10 == main_~i~0); 4259#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4256#L18-1 assume !!(main_~i~0 > 0); 4253#L12 assume !(1 == main_~i~0); 4251#L12-2 assume !(10 == main_~i~0); 4248#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4245#L18-1 assume !!(main_~i~0 > 0); 4242#L12 assume !(1 == main_~i~0); 4240#L12-2 assume !(10 == main_~i~0); 4238#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4235#L18-1 assume !!(main_~i~0 > 0); 4232#L12 assume !(1 == main_~i~0); 4191#L12-2 assume !(10 == main_~i~0); 4196#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4193#L18-1 assume !!(main_~i~0 > 0); 4190#L12 assume 1 == main_~i~0;main_~up~0 := 1; 4186#L12-2 [2021-08-27 14:10:16,612 INFO L793 eck$LassoCheckResult]: Loop: 4186#L12-2 assume !(10 == main_~i~0); 4176#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4159#L18-1 assume !!(main_~i~0 > 0); 4160#L12 assume !(1 == main_~i~0); 4264#L12-2 assume !(10 == main_~i~0); 4262#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4260#L18-1 assume !!(main_~i~0 > 0); 4257#L12 assume !(1 == main_~i~0); 4254#L12-2 assume !(10 == main_~i~0); 4244#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4249#L18-1 assume !!(main_~i~0 > 0); 4246#L12 assume !(1 == main_~i~0); 4243#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 4156#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4172#L18-1 assume !!(main_~i~0 > 0); 4234#L12 assume !(1 == main_~i~0); 4231#L12-2 assume !(10 == main_~i~0); 4230#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4229#L18-1 assume !!(main_~i~0 > 0); 4228#L12 assume !(1 == main_~i~0); 4227#L12-2 assume !(10 == main_~i~0); 4226#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4225#L18-1 assume !!(main_~i~0 > 0); 4224#L12 assume !(1 == main_~i~0); 4223#L12-2 assume !(10 == main_~i~0); 4222#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4221#L18-1 assume !!(main_~i~0 > 0); 4220#L12 assume !(1 == main_~i~0); 4219#L12-2 assume !(10 == main_~i~0); 4218#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4217#L18-1 assume !!(main_~i~0 > 0); 4216#L12 assume !(1 == main_~i~0); 4189#L12-2 assume !(10 == main_~i~0); 4195#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4192#L18-1 assume !!(main_~i~0 > 0); 4188#L12 assume 1 == main_~i~0;main_~up~0 := 1; 4186#L12-2 [2021-08-27 14:10:16,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:16,612 INFO L82 PathProgramCache]: Analyzing trace with hash 985437280, now seen corresponding path program 7 times [2021-08-27 14:10:16,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:16,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214521645] [2021-08-27 14:10:16,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:16,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 92 proven. 15 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-08-27 14:10:16,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:16,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214521645] [2021-08-27 14:10:16,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214521645] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:16,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457568047] [2021-08-27 14:10:16,639 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 14:10:16,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:16,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:16,640 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:16,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-08-27 14:10:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:16,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 14:10:16,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 92 proven. 15 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-08-27 14:10:16,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457568047] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:16,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:16,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-27 14:10:16,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530890839] [2021-08-27 14:10:16,878 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:10:16,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:16,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1636148222, now seen corresponding path program 5 times [2021-08-27 14:10:16,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:16,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109360308] [2021-08-27 14:10:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:16,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:16,924 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 74 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-27 14:10:16,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:16,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109360308] [2021-08-27 14:10:16,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109360308] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:16,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518155643] [2021-08-27 14:10:16,925 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 14:10:16,925 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:16,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:16,927 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:16,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-08-27 14:10:17,084 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-08-27 14:10:17,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 14:10:17,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 14:10:17,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 74 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-27 14:10:17,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518155643] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:17,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:17,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-08-27 14:10:17,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892796972] [2021-08-27 14:10:17,166 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:10:17,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:17,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 14:10:17,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-08-27 14:10:17,166 INFO L87 Difference]: Start difference. First operand 139 states and 169 transitions. cyclomatic complexity: 39 Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:17,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:17,204 INFO L93 Difference]: Finished difference Result 180 states and 220 transitions. [2021-08-27 14:10:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 14:10:17,205 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 180 states and 220 transitions. [2021-08-27 14:10:17,206 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-08-27 14:10:17,207 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 180 states to 180 states and 220 transitions. [2021-08-27 14:10:17,207 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2021-08-27 14:10:17,207 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-08-27 14:10:17,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 220 transitions. [2021-08-27 14:10:17,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:17,208 INFO L681 BuchiCegarLoop]: Abstraction has 180 states and 220 transitions. [2021-08-27 14:10:17,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 220 transitions. [2021-08-27 14:10:17,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 151. [2021-08-27 14:10:17,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 151 states have (on average 1.2119205298013245) internal successors, (183), 150 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 183 transitions. [2021-08-27 14:10:17,210 INFO L704 BuchiCegarLoop]: Abstraction has 151 states and 183 transitions. [2021-08-27 14:10:17,210 INFO L587 BuchiCegarLoop]: Abstraction has 151 states and 183 transitions. [2021-08-27 14:10:17,210 INFO L425 BuchiCegarLoop]: ======== Iteration 15============ [2021-08-27 14:10:17,210 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 151 states and 183 transitions. [2021-08-27 14:10:17,211 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 45 [2021-08-27 14:10:17,211 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:17,211 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:17,213 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 9, 9, 7, 3, 2, 1, 1] [2021-08-27 14:10:17,213 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [10, 9, 9, 7, 3, 1, 1] [2021-08-27 14:10:17,213 INFO L791 eck$LassoCheckResult]: Stem: 4717#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4718#L18-1 assume !!(main_~i~0 > 0); 4761#L12 assume 1 == main_~i~0;main_~up~0 := 1; 4758#L12-2 assume !(10 == main_~i~0); 4755#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4753#L18-1 assume !!(main_~i~0 > 0); 4751#L12 assume !(1 == main_~i~0); 4750#L12-2 assume !(10 == main_~i~0); 4749#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4746#L18-1 assume !!(main_~i~0 > 0); 4736#L12 assume !(1 == main_~i~0); 4739#L12-2 assume !(10 == main_~i~0); 4737#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4735#L18-1 assume !!(main_~i~0 > 0); 4733#L12 assume !(1 == main_~i~0); 4730#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 4719#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4720#L18-1 assume !!(main_~i~0 > 0); 4788#L12 assume !(1 == main_~i~0); 4787#L12-2 assume !(10 == main_~i~0); 4786#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4785#L18-1 assume !!(main_~i~0 > 0); 4784#L12 assume !(1 == main_~i~0); 4783#L12-2 assume !(10 == main_~i~0); 4782#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4781#L18-1 assume !!(main_~i~0 > 0); 4780#L12 assume !(1 == main_~i~0); 4779#L12-2 assume !(10 == main_~i~0); 4778#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4777#L18-1 assume !!(main_~i~0 > 0); 4776#L12 assume !(1 == main_~i~0); 4775#L12-2 assume !(10 == main_~i~0); 4774#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4773#L18-1 assume !!(main_~i~0 > 0); 4772#L12 assume !(1 == main_~i~0); 4771#L12-2 assume !(10 == main_~i~0); 4770#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4769#L18-1 assume !!(main_~i~0 > 0); 4768#L12 assume !(1 == main_~i~0); 4741#L12-2 assume !(10 == main_~i~0); 4747#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4744#L18-1 assume !!(main_~i~0 > 0); 4740#L12 assume 1 == main_~i~0;main_~up~0 := 1; 4738#L12-2 [2021-08-27 14:10:17,213 INFO L793 eck$LassoCheckResult]: Loop: 4738#L12-2 assume !(10 == main_~i~0); 4724#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4713#L18-1 assume !!(main_~i~0 > 0); 4714#L12 assume !(1 == main_~i~0); 4726#L12-2 assume !(10 == main_~i~0); 4727#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4834#L18-1 assume !!(main_~i~0 > 0); 4831#L12 assume !(1 == main_~i~0); 4829#L12-2 assume !(10 == main_~i~0); 4812#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 4826#L18-1 assume !!(main_~i~0 > 0); 4819#L12 assume !(1 == main_~i~0); 4811#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 4710#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4725#L18-1 assume !!(main_~i~0 > 0); 4820#L12 assume !(1 == main_~i~0); 4813#L12-2 assume !(10 == main_~i~0); 4807#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4806#L18-1 assume !!(main_~i~0 > 0); 4805#L12 assume !(1 == main_~i~0); 4804#L12-2 assume !(10 == main_~i~0); 4803#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4802#L18-1 assume !!(main_~i~0 > 0); 4801#L12 assume !(1 == main_~i~0); 4800#L12-2 assume !(10 == main_~i~0); 4799#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4798#L18-1 assume !!(main_~i~0 > 0); 4797#L12 assume !(1 == main_~i~0); 4796#L12-2 assume !(10 == main_~i~0); 4795#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4794#L18-1 assume !!(main_~i~0 > 0); 4793#L12 assume !(1 == main_~i~0); 4792#L12-2 assume !(10 == main_~i~0); 4791#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4790#L18-1 assume !!(main_~i~0 > 0); 4789#L12 assume !(1 == main_~i~0); 4743#L12-2 assume !(10 == main_~i~0); 4748#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4745#L18-1 assume !!(main_~i~0 > 0); 4742#L12 assume 1 == main_~i~0;main_~up~0 := 1; 4738#L12-2 [2021-08-27 14:10:17,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:17,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1480489525, now seen corresponding path program 8 times [2021-08-27 14:10:17,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:17,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038018852] [2021-08-27 14:10:17,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:17,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:17,243 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 107 proven. 15 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-08-27 14:10:17,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:17,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038018852] [2021-08-27 14:10:17,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038018852] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:17,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814494374] [2021-08-27 14:10:17,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 14:10:17,243 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:17,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:17,244 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:17,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-08-27 14:10:17,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 14:10:17,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 14:10:17,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 14:10:17,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:17,506 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 107 proven. 15 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-08-27 14:10:17,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814494374] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:17,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:17,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-27 14:10:17,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221894696] [2021-08-27 14:10:17,506 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:10:17,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:17,507 INFO L82 PathProgramCache]: Analyzing trace with hash 505255529, now seen corresponding path program 6 times [2021-08-27 14:10:17,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:17,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149410469] [2021-08-27 14:10:17,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:17,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 87 proven. 78 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-27 14:10:17,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:17,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149410469] [2021-08-27 14:10:17,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149410469] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:17,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567313122] [2021-08-27 14:10:17,561 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 14:10:17,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:17,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:17,562 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:17,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-08-27 14:10:17,754 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-08-27 14:10:17,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 14:10:17,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 14:10:17,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 87 proven. 78 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-27 14:10:17,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567313122] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:17,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:17,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-08-27 14:10:17,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250941802] [2021-08-27 14:10:17,847 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:10:17,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:17,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 14:10:17,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-08-27 14:10:17,848 INFO L87 Difference]: Start difference. First operand 151 states and 183 transitions. cyclomatic complexity: 41 Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:17,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:17,902 INFO L93 Difference]: Finished difference Result 196 states and 239 transitions. [2021-08-27 14:10:17,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 14:10:17,902 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 196 states and 239 transitions. [2021-08-27 14:10:17,903 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 51 [2021-08-27 14:10:17,904 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 196 states to 196 states and 239 transitions. [2021-08-27 14:10:17,904 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 61 [2021-08-27 14:10:17,904 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 61 [2021-08-27 14:10:17,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 196 states and 239 transitions. [2021-08-27 14:10:17,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:17,904 INFO L681 BuchiCegarLoop]: Abstraction has 196 states and 239 transitions. [2021-08-27 14:10:17,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states and 239 transitions. [2021-08-27 14:10:17,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 163. [2021-08-27 14:10:17,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 162 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:17,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 197 transitions. [2021-08-27 14:10:17,906 INFO L704 BuchiCegarLoop]: Abstraction has 163 states and 197 transitions. [2021-08-27 14:10:17,906 INFO L587 BuchiCegarLoop]: Abstraction has 163 states and 197 transitions. [2021-08-27 14:10:17,906 INFO L425 BuchiCegarLoop]: ======== Iteration 16============ [2021-08-27 14:10:17,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 163 states and 197 transitions. [2021-08-27 14:10:17,907 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2021-08-27 14:10:17,907 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:17,907 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:17,907 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [12, 10, 10, 8, 3, 2, 1, 1] [2021-08-27 14:10:17,908 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [11, 10, 10, 8, 3, 1, 1] [2021-08-27 14:10:17,908 INFO L791 eck$LassoCheckResult]: Stem: 5320#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 5321#L18-1 assume !!(main_~i~0 > 0); 5370#L12 assume 1 == main_~i~0;main_~up~0 := 1; 5367#L12-2 assume !(10 == main_~i~0); 5364#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5362#L18-1 assume !!(main_~i~0 > 0); 5360#L12 assume !(1 == main_~i~0); 5359#L12-2 assume !(10 == main_~i~0); 5358#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5355#L18-1 assume !!(main_~i~0 > 0); 5345#L12 assume !(1 == main_~i~0); 5348#L12-2 assume !(10 == main_~i~0); 5346#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5344#L18-1 assume !!(main_~i~0 > 0); 5342#L12 assume !(1 == main_~i~0); 5339#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 5326#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5327#L18-1 assume !!(main_~i~0 > 0); 5456#L12 assume !(1 == main_~i~0); 5455#L12-2 assume !(10 == main_~i~0); 5454#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5453#L18-1 assume !!(main_~i~0 > 0); 5452#L12 assume !(1 == main_~i~0); 5451#L12-2 assume !(10 == main_~i~0); 5450#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5449#L18-1 assume !!(main_~i~0 > 0); 5448#L12 assume !(1 == main_~i~0); 5447#L12-2 assume !(10 == main_~i~0); 5446#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5445#L18-1 assume !!(main_~i~0 > 0); 5444#L12 assume !(1 == main_~i~0); 5443#L12-2 assume !(10 == main_~i~0); 5428#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5425#L18-1 assume !!(main_~i~0 > 0); 5422#L12 assume !(1 == main_~i~0); 5420#L12-2 assume !(10 == main_~i~0); 5417#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5414#L18-1 assume !!(main_~i~0 > 0); 5411#L12 assume !(1 == main_~i~0); 5409#L12-2 assume !(10 == main_~i~0); 5407#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5404#L18-1 assume !!(main_~i~0 > 0); 5401#L12 assume !(1 == main_~i~0); 5352#L12-2 assume !(10 == main_~i~0); 5357#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5354#L18-1 assume !!(main_~i~0 > 0); 5351#L12 assume 1 == main_~i~0;main_~up~0 := 1; 5347#L12-2 [2021-08-27 14:10:17,908 INFO L793 eck$LassoCheckResult]: Loop: 5347#L12-2 assume !(10 == main_~i~0); 5337#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5322#L18-1 assume !!(main_~i~0 > 0); 5323#L12 assume !(1 == main_~i~0); 5433#L12-2 assume !(10 == main_~i~0); 5431#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5429#L18-1 assume !!(main_~i~0 > 0); 5426#L12 assume !(1 == main_~i~0); 5423#L12-2 assume !(10 == main_~i~0); 5413#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5418#L18-1 assume !!(main_~i~0 > 0); 5415#L12 assume !(1 == main_~i~0); 5412#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 5317#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5333#L18-1 assume !!(main_~i~0 > 0); 5403#L12 assume !(1 == main_~i~0); 5400#L12-2 assume !(10 == main_~i~0); 5399#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5398#L18-1 assume !!(main_~i~0 > 0); 5397#L12 assume !(1 == main_~i~0); 5396#L12-2 assume !(10 == main_~i~0); 5395#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5394#L18-1 assume !!(main_~i~0 > 0); 5393#L12 assume !(1 == main_~i~0); 5392#L12-2 assume !(10 == main_~i~0); 5391#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5390#L18-1 assume !!(main_~i~0 > 0); 5389#L12 assume !(1 == main_~i~0); 5388#L12-2 assume !(10 == main_~i~0); 5387#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5386#L18-1 assume !!(main_~i~0 > 0); 5385#L12 assume !(1 == main_~i~0); 5384#L12-2 assume !(10 == main_~i~0); 5383#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5382#L18-1 assume !!(main_~i~0 > 0); 5381#L12 assume !(1 == main_~i~0); 5380#L12-2 assume !(10 == main_~i~0); 5379#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5378#L18-1 assume !!(main_~i~0 > 0); 5377#L12 assume !(1 == main_~i~0); 5350#L12-2 assume !(10 == main_~i~0); 5356#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5353#L18-1 assume !!(main_~i~0 > 0); 5349#L12 assume 1 == main_~i~0;main_~up~0 := 1; 5347#L12-2 [2021-08-27 14:10:17,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:17,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1019857334, now seen corresponding path program 9 times [2021-08-27 14:10:17,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:17,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314978101] [2021-08-27 14:10:17,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:17,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:17,934 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 122 proven. 15 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-08-27 14:10:17,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:17,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314978101] [2021-08-27 14:10:17,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314978101] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:17,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940793379] [2021-08-27 14:10:17,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 14:10:17,935 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:17,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:17,936 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:17,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-08-27 14:10:18,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-08-27 14:10:18,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 14:10:18,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 14:10:18,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 116 proven. 105 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-08-27 14:10:18,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940793379] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:18,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:18,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 15 [2021-08-27 14:10:18,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421853181] [2021-08-27 14:10:18,318 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:10:18,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:18,318 INFO L82 PathProgramCache]: Analyzing trace with hash 256924500, now seen corresponding path program 7 times [2021-08-27 14:10:18,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:18,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431821576] [2021-08-27 14:10:18,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:18,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:18,376 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 100 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-27 14:10:18,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:18,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431821576] [2021-08-27 14:10:18,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431821576] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:18,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066909772] [2021-08-27 14:10:18,377 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 14:10:18,377 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:18,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:18,378 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:18,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-08-27 14:10:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:18,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 14:10:18,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:18,679 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 100 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-27 14:10:18,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066909772] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:18,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:18,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-08-27 14:10:18,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121645331] [2021-08-27 14:10:18,680 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 14:10:18,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:18,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-27 14:10:18,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-08-27 14:10:18,681 INFO L87 Difference]: Start difference. First operand 163 states and 197 transitions. cyclomatic complexity: 43 Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:18,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:18,730 INFO L93 Difference]: Finished difference Result 212 states and 258 transitions. [2021-08-27 14:10:18,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 14:10:18,730 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 212 states and 258 transitions. [2021-08-27 14:10:18,731 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 55 [2021-08-27 14:10:18,732 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 212 states to 212 states and 258 transitions. [2021-08-27 14:10:18,732 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65 [2021-08-27 14:10:18,732 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2021-08-27 14:10:18,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 212 states and 258 transitions. [2021-08-27 14:10:18,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:18,733 INFO L681 BuchiCegarLoop]: Abstraction has 212 states and 258 transitions. [2021-08-27 14:10:18,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states and 258 transitions. [2021-08-27 14:10:18,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 175. [2021-08-27 14:10:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 175 states have (on average 1.2057142857142857) internal successors, (211), 174 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:18,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 211 transitions. [2021-08-27 14:10:18,740 INFO L704 BuchiCegarLoop]: Abstraction has 175 states and 211 transitions. [2021-08-27 14:10:18,741 INFO L587 BuchiCegarLoop]: Abstraction has 175 states and 211 transitions. [2021-08-27 14:10:18,741 INFO L425 BuchiCegarLoop]: ======== Iteration 17============ [2021-08-27 14:10:18,741 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 175 states and 211 transitions. [2021-08-27 14:10:18,741 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 53 [2021-08-27 14:10:18,741 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:18,741 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:18,742 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [13, 11, 11, 9, 3, 2, 1, 1] [2021-08-27 14:10:18,742 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [12, 11, 11, 9, 3, 1, 1] [2021-08-27 14:10:18,742 INFO L791 eck$LassoCheckResult]: Stem: 5989#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 5990#L18-1 assume !!(main_~i~0 > 0); 6039#L12 assume 1 == main_~i~0;main_~up~0 := 1; 6034#L12-2 assume !(10 == main_~i~0); 6032#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6030#L18-1 assume !!(main_~i~0 > 0); 6029#L12 assume !(1 == main_~i~0); 6028#L12-2 assume !(10 == main_~i~0); 6027#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6024#L18-1 assume !!(main_~i~0 > 0); 6014#L12 assume !(1 == main_~i~0); 6017#L12-2 assume !(10 == main_~i~0); 6015#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6013#L18-1 assume !!(main_~i~0 > 0); 6011#L12 assume !(1 == main_~i~0); 6008#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 5995#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5996#L18-1 assume !!(main_~i~0 > 0); 6133#L12 assume !(1 == main_~i~0); 6132#L12-2 assume !(10 == main_~i~0); 6131#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6130#L18-1 assume !!(main_~i~0 > 0); 6129#L12 assume !(1 == main_~i~0); 6128#L12-2 assume !(10 == main_~i~0); 6127#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6126#L18-1 assume !!(main_~i~0 > 0); 6125#L12 assume !(1 == main_~i~0); 6124#L12-2 assume !(10 == main_~i~0); 6123#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6122#L18-1 assume !!(main_~i~0 > 0); 6121#L12 assume !(1 == main_~i~0); 6120#L12-2 assume !(10 == main_~i~0); 6119#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6118#L18-1 assume !!(main_~i~0 > 0); 6117#L12 assume !(1 == main_~i~0); 6116#L12-2 assume !(10 == main_~i~0); 6101#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6098#L18-1 assume !!(main_~i~0 > 0); 6095#L12 assume !(1 == main_~i~0); 6093#L12-2 assume !(10 == main_~i~0); 6090#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6087#L18-1 assume !!(main_~i~0 > 0); 6084#L12 assume !(1 == main_~i~0); 6082#L12-2 assume !(10 == main_~i~0); 6080#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6077#L18-1 assume !!(main_~i~0 > 0); 6074#L12 assume !(1 == main_~i~0); 6019#L12-2 assume !(10 == main_~i~0); 6025#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6022#L18-1 assume !!(main_~i~0 > 0); 6018#L12 assume 1 == main_~i~0;main_~up~0 := 1; 6016#L12-2 [2021-08-27 14:10:18,742 INFO L793 eck$LassoCheckResult]: Loop: 6016#L12-2 assume !(10 == main_~i~0); 6006#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5991#L18-1 assume !!(main_~i~0 > 0); 5992#L12 assume !(1 == main_~i~0); 6106#L12-2 assume !(10 == main_~i~0); 6104#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6102#L18-1 assume !!(main_~i~0 > 0); 6099#L12 assume !(1 == main_~i~0); 6096#L12-2 assume !(10 == main_~i~0); 6086#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 6091#L18-1 assume !!(main_~i~0 > 0); 6088#L12 assume !(1 == main_~i~0); 6085#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 5986#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6002#L18-1 assume !!(main_~i~0 > 0); 6076#L12 assume !(1 == main_~i~0); 6073#L12-2 assume !(10 == main_~i~0); 6072#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6071#L18-1 assume !!(main_~i~0 > 0); 6070#L12 assume !(1 == main_~i~0); 6069#L12-2 assume !(10 == main_~i~0); 6068#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6067#L18-1 assume !!(main_~i~0 > 0); 6066#L12 assume !(1 == main_~i~0); 6065#L12-2 assume !(10 == main_~i~0); 6064#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6063#L18-1 assume !!(main_~i~0 > 0); 6062#L12 assume !(1 == main_~i~0); 6061#L12-2 assume !(10 == main_~i~0); 6060#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6059#L18-1 assume !!(main_~i~0 > 0); 6058#L12 assume !(1 == main_~i~0); 6057#L12-2 assume !(10 == main_~i~0); 6056#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6055#L18-1 assume !!(main_~i~0 > 0); 6054#L12 assume !(1 == main_~i~0); 6053#L12-2 assume !(10 == main_~i~0); 6052#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6051#L18-1 assume !!(main_~i~0 > 0); 6050#L12 assume !(1 == main_~i~0); 6049#L12-2 assume !(10 == main_~i~0); 6048#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6047#L18-1 assume !!(main_~i~0 > 0); 6046#L12 assume !(1 == main_~i~0); 6021#L12-2 assume !(10 == main_~i~0); 6026#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 6023#L18-1 assume !!(main_~i~0 > 0); 6020#L12 assume 1 == main_~i~0;main_~up~0 := 1; 6016#L12-2 [2021-08-27 14:10:18,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:18,743 INFO L82 PathProgramCache]: Analyzing trace with hash -890757087, now seen corresponding path program 10 times [2021-08-27 14:10:18,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:18,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79175549] [2021-08-27 14:10:18,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:18,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 137 proven. 15 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 14:10:18,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:18,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79175549] [2021-08-27 14:10:18,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79175549] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:18,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496494024] [2021-08-27 14:10:18,783 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-27 14:10:18,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:18,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:18,791 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:18,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-08-27 14:10:19,005 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-27 14:10:19,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 14:10:19,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 14:10:19,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:19,147 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 137 proven. 15 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 14:10:19,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496494024] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:19,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:19,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-27 14:10:19,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767383751] [2021-08-27 14:10:19,148 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:10:19,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:19,149 INFO L82 PathProgramCache]: Analyzing trace with hash -294604097, now seen corresponding path program 8 times [2021-08-27 14:10:19,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:19,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738588432] [2021-08-27 14:10:19,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:19,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:19,155 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:19,160 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:19,325 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:19,325 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:19,325 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:19,325 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:19,325 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:10:19,325 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:19,325 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:19,326 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:19,326 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration17_Loop [2021-08-27 14:10:19,326 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:19,326 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:19,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:19,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:19,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:19,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:19,369 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:19,369 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:10:19,370 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:19,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:19,380 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:19,382 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:19,382 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:19,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-08-27 14:10:19,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Ended with exit code 0 [2021-08-27 14:10:19,410 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:19,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:19,411 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:19,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2021-08-27 14:10:19,413 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:10:19,413 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:19,420 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:10:19,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2021-08-27 14:10:19,435 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:19,435 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:19,435 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:19,436 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:19,436 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:10:19,436 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:19,436 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:19,436 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:19,436 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration17_Loop [2021-08-27 14:10:19,436 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:19,436 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:19,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:19,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:19,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:19,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:19,489 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:19,489 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:10:19,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:19,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:19,490 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:19,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2021-08-27 14:10:19,492 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:19,499 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:19,499 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:19,499 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:19,499 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:19,500 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:19,500 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:19,525 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:19,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:19,541 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:19,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:19,545 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:19,555 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:19,561 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:19,561 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:19,562 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:19,562 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:19,562 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:19,562 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:19,562 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:19,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2021-08-27 14:10:19,566 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:10:19,567 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-27 14:10:19,567 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:10:19,567 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:19,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:19,568 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:19,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2021-08-27 14:10:19,569 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:10:19,569 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:10:19,569 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:10:19,569 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-08-27 14:10:19,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:19,585 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:10:19,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:19,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:10:19,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:19,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:19,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 14:10:19,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:19,891 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 14:10:19,891 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-08-27 14:10:19,891 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 175 states and 211 transitions. cyclomatic complexity: 45 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:20,035 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 175 states and 211 transitions. cyclomatic complexity: 45. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 689 states and 821 transitions. Complement of second has 19 states. [2021-08-27 14:10:20,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2021-08-27 14:10:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 47 transitions. [2021-08-27 14:10:20,036 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 51 letters. Loop has 48 letters. [2021-08-27 14:10:20,037 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:20,037 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 99 letters. Loop has 48 letters. [2021-08-27 14:10:20,038 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:20,038 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 51 letters. Loop has 96 letters. [2021-08-27 14:10:20,038 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:20,038 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 689 states and 821 transitions. [2021-08-27 14:10:20,041 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 57 [2021-08-27 14:10:20,043 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 689 states to 536 states and 633 transitions. [2021-08-27 14:10:20,043 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 121 [2021-08-27 14:10:20,043 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 127 [2021-08-27 14:10:20,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 536 states and 633 transitions. [2021-08-27 14:10:20,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:20,043 INFO L681 BuchiCegarLoop]: Abstraction has 536 states and 633 transitions. [2021-08-27 14:10:20,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states and 633 transitions. [2021-08-27 14:10:20,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 405. [2021-08-27 14:10:20,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 405 states have (on average 1.1950617283950618) internal successors, (484), 404 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 484 transitions. [2021-08-27 14:10:20,050 INFO L704 BuchiCegarLoop]: Abstraction has 405 states and 484 transitions. [2021-08-27 14:10:20,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:20,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 14:10:20,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-27 14:10:20,050 INFO L87 Difference]: Start difference. First operand 405 states and 484 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:20,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:20,073 INFO L93 Difference]: Finished difference Result 277 states and 322 transitions. [2021-08-27 14:10:20,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 14:10:20,073 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 277 states and 322 transitions. [2021-08-27 14:10:20,075 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 71 [2021-08-27 14:10:20,075 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 277 states to 249 states and 294 transitions. [2021-08-27 14:10:20,075 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2021-08-27 14:10:20,076 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 68 [2021-08-27 14:10:20,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 249 states and 294 transitions. [2021-08-27 14:10:20,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:20,076 INFO L681 BuchiCegarLoop]: Abstraction has 249 states and 294 transitions. [2021-08-27 14:10:20,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states and 294 transitions. [2021-08-27 14:10:20,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 187. [2021-08-27 14:10:20,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 187 states have (on average 1.1925133689839573) internal successors, (223), 186 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:20,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 223 transitions. [2021-08-27 14:10:20,078 INFO L704 BuchiCegarLoop]: Abstraction has 187 states and 223 transitions. [2021-08-27 14:10:20,079 INFO L587 BuchiCegarLoop]: Abstraction has 187 states and 223 transitions. [2021-08-27 14:10:20,079 INFO L425 BuchiCegarLoop]: ======== Iteration 18============ [2021-08-27 14:10:20,079 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 187 states and 223 transitions. [2021-08-27 14:10:20,079 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 57 [2021-08-27 14:10:20,079 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:20,079 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:20,084 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [14, 12, 12, 9, 4, 2, 1, 1] [2021-08-27 14:10:20,084 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [13, 12, 12, 9, 4, 1, 1] [2021-08-27 14:10:20,084 INFO L791 eck$LassoCheckResult]: Stem: 8033#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 8034#L18-1 assume !!(main_~i~0 > 0); 8155#L12 assume 1 == main_~i~0;main_~up~0 := 1; 8153#L12-2 assume !(10 == main_~i~0); 8046#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8047#L18-1 assume !!(main_~i~0 > 0); 8206#L12 assume !(1 == main_~i~0); 8204#L12-2 assume !(10 == main_~i~0); 8202#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8200#L18-1 assume !!(main_~i~0 > 0); 8198#L12 assume !(1 == main_~i~0); 8197#L12-2 assume !(10 == main_~i~0); 8164#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8161#L18-1 assume !!(main_~i~0 > 0); 8130#L12 assume !(1 == main_~i~0); 8139#L12-2 assume !(10 == main_~i~0); 8133#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8129#L18-1 assume !!(main_~i~0 > 0); 8126#L12 assume !(1 == main_~i~0); 8127#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 8039#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8040#L18-1 assume !!(main_~i~0 > 0); 8125#L12 assume !(1 == main_~i~0); 8123#L12-2 assume !(10 == main_~i~0); 8121#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8119#L18-1 assume !!(main_~i~0 > 0); 8117#L12 assume !(1 == main_~i~0); 8115#L12-2 assume !(10 == main_~i~0); 8113#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8111#L18-1 assume !!(main_~i~0 > 0); 8109#L12 assume !(1 == main_~i~0); 8107#L12-2 assume !(10 == main_~i~0); 8105#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8103#L18-1 assume !!(main_~i~0 > 0); 8101#L12 assume !(1 == main_~i~0); 8099#L12-2 assume !(10 == main_~i~0); 8097#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8095#L18-1 assume !!(main_~i~0 > 0); 8093#L12 assume !(1 == main_~i~0); 8091#L12-2 assume !(10 == main_~i~0); 8089#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8087#L18-1 assume !!(main_~i~0 > 0); 8085#L12 assume !(1 == main_~i~0); 8083#L12-2 assume !(10 == main_~i~0); 8081#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8079#L18-1 assume !!(main_~i~0 > 0); 8077#L12 assume !(1 == main_~i~0); 8075#L12-2 assume !(10 == main_~i~0); 8073#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8071#L18-1 assume !!(main_~i~0 > 0); 8069#L12 assume !(1 == main_~i~0); 8062#L12-2 assume !(10 == main_~i~0); 8066#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8064#L18-1 assume !!(main_~i~0 > 0); 8061#L12 assume 1 == main_~i~0;main_~up~0 := 1; 8058#L12-2 [2021-08-27 14:10:20,084 INFO L793 eck$LassoCheckResult]: Loop: 8058#L12-2 assume !(10 == main_~i~0); 8053#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8151#L18-1 assume !!(main_~i~0 > 0); 8150#L12 assume !(1 == main_~i~0); 8149#L12-2 assume !(10 == main_~i~0); 8148#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8147#L18-1 assume !!(main_~i~0 > 0); 8146#L12 assume !(1 == main_~i~0); 8145#L12-2 assume !(10 == main_~i~0); 8144#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8143#L18-1 assume !!(main_~i~0 > 0); 8142#L12 assume !(1 == main_~i~0); 8141#L12-2 assume !(10 == main_~i~0); 8132#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8137#L18-1 assume !!(main_~i~0 > 0); 8134#L12 assume !(1 == main_~i~0); 8131#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 8030#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8048#L18-1 assume !!(main_~i~0 > 0); 8124#L12 assume !(1 == main_~i~0); 8122#L12-2 assume !(10 == main_~i~0); 8120#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8118#L18-1 assume !!(main_~i~0 > 0); 8116#L12 assume !(1 == main_~i~0); 8114#L12-2 assume !(10 == main_~i~0); 8112#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8110#L18-1 assume !!(main_~i~0 > 0); 8108#L12 assume !(1 == main_~i~0); 8106#L12-2 assume !(10 == main_~i~0); 8104#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8102#L18-1 assume !!(main_~i~0 > 0); 8100#L12 assume !(1 == main_~i~0); 8098#L12-2 assume !(10 == main_~i~0); 8096#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8094#L18-1 assume !!(main_~i~0 > 0); 8092#L12 assume !(1 == main_~i~0); 8090#L12-2 assume !(10 == main_~i~0); 8088#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8086#L18-1 assume !!(main_~i~0 > 0); 8084#L12 assume !(1 == main_~i~0); 8082#L12-2 assume !(10 == main_~i~0); 8080#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8078#L18-1 assume !!(main_~i~0 > 0); 8076#L12 assume !(1 == main_~i~0); 8074#L12-2 assume !(10 == main_~i~0); 8072#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8070#L18-1 assume !!(main_~i~0 > 0); 8068#L12 assume !(1 == main_~i~0); 8060#L12-2 assume !(10 == main_~i~0); 8065#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8063#L18-1 assume !!(main_~i~0 > 0); 8059#L12 assume 1 == main_~i~0;main_~up~0 := 1; 8058#L12-2 [2021-08-27 14:10:20,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:20,085 INFO L82 PathProgramCache]: Analyzing trace with hash 260754314, now seen corresponding path program 11 times [2021-08-27 14:10:20,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:20,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022936895] [2021-08-27 14:10:20,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:20,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:20,126 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 174 proven. 28 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 14:10:20,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:20,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022936895] [2021-08-27 14:10:20,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022936895] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:20,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834824791] [2021-08-27 14:10:20,127 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-27 14:10:20,127 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:20,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:20,127 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:20,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-08-27 14:10:20,394 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-08-27 14:10:20,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 14:10:20,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 14:10:20,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 174 proven. 28 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 14:10:20,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834824791] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:20,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:20,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-08-27 14:10:20,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209676472] [2021-08-27 14:10:20,509 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:10:20,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:20,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1093459752, now seen corresponding path program 9 times [2021-08-27 14:10:20,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:20,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243559060] [2021-08-27 14:10:20,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:20,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:20,514 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:20,526 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:20,702 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:20,703 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:20,703 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:20,703 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:20,703 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:10:20,703 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:20,703 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:20,703 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:20,703 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration18_Loop [2021-08-27 14:10:20,703 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:20,703 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:20,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:20,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:20,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:20,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:20,746 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:20,746 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:10:20,746 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:20,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:20,747 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:20,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2021-08-27 14:10:20,749 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:20,749 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:20,766 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:20,766 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_16=1} Honda state: {v_rep~unnamed0~0~true_16=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:20,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Ended with exit code 0 [2021-08-27 14:10:20,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:20,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:20,782 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:20,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2021-08-27 14:10:20,784 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:20,784 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:20,792 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:20,793 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:20,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Ended with exit code 0 [2021-08-27 14:10:20,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:20,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:20,808 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:20,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2021-08-27 14:10:20,810 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:20,810 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:20,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Ended with exit code 0 [2021-08-27 14:10:20,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:20,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:20,837 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:20,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2021-08-27 14:10:20,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:10:20,839 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:20,848 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:10:20,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Ended with exit code 0 [2021-08-27 14:10:20,862 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:20,862 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:20,863 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:20,863 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:20,863 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:10:20,863 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:20,863 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:20,863 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:20,863 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration18_Loop [2021-08-27 14:10:20,863 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:20,863 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:20,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:20,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:20,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:20,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:20,906 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:20,906 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:10:20,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:20,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:20,907 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:20,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2021-08-27 14:10:20,908 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:20,915 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:20,915 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:20,915 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:20,915 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:20,916 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:20,916 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:20,923 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:20,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:20,938 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:20,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:20,938 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:20,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2021-08-27 14:10:20,940 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:20,947 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:20,947 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:20,947 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:20,947 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:20,947 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:20,948 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:20,948 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:20,985 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:21,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Ended with exit code 0 [2021-08-27 14:10:21,000 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:21,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:21,001 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:21,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Waiting until timeout for monitored process [2021-08-27 14:10:21,003 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:21,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:21,010 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:21,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:21,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:21,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:21,011 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:21,011 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:21,013 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:10:21,014 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:10:21,014 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 14:10:21,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:21,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:21,015 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:21,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Waiting until timeout for monitored process [2021-08-27 14:10:21,016 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:10:21,016 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:10:21,017 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:10:21,017 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-08-27 14:10:21,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Ended with exit code 0 [2021-08-27 14:10:21,032 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:10:21,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:21,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:10:21,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:21,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:21,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 14:10:21,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:21,408 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 14:10:21,412 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2021-08-27 14:10:21,412 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 187 states and 223 transitions. cyclomatic complexity: 45 Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:21,571 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 187 states and 223 transitions. cyclomatic complexity: 45. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 905 states and 1062 transitions. Complement of second has 23 states. [2021-08-27 14:10:21,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 1 stem states 10 non-accepting loop states 1 accepting loop states [2021-08-27 14:10:21,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:21,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 57 transitions. [2021-08-27 14:10:21,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 57 transitions. Stem has 55 letters. Loop has 52 letters. [2021-08-27 14:10:21,574 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:21,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 57 transitions. Stem has 107 letters. Loop has 52 letters. [2021-08-27 14:10:21,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:21,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 57 transitions. Stem has 55 letters. Loop has 104 letters. [2021-08-27 14:10:21,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:21,575 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 905 states and 1062 transitions. [2021-08-27 14:10:21,578 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 61 [2021-08-27 14:10:21,580 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 905 states to 664 states and 777 transitions. [2021-08-27 14:10:21,580 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 142 [2021-08-27 14:10:21,580 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 149 [2021-08-27 14:10:21,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 664 states and 777 transitions. [2021-08-27 14:10:21,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:21,581 INFO L681 BuchiCegarLoop]: Abstraction has 664 states and 777 transitions. [2021-08-27 14:10:21,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states and 777 transitions. [2021-08-27 14:10:21,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 461. [2021-08-27 14:10:21,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 461 states have (on average 1.193058568329718) internal successors, (550), 460 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:21,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 550 transitions. [2021-08-27 14:10:21,586 INFO L704 BuchiCegarLoop]: Abstraction has 461 states and 550 transitions. [2021-08-27 14:10:21,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:21,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 14:10:21,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-27 14:10:21,586 INFO L87 Difference]: Start difference. First operand 461 states and 550 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:21,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:21,611 INFO L93 Difference]: Finished difference Result 317 states and 365 transitions. [2021-08-27 14:10:21,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 14:10:21,611 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 317 states and 365 transitions. [2021-08-27 14:10:21,612 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2021-08-27 14:10:21,613 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 317 states to 281 states and 329 transitions. [2021-08-27 14:10:21,613 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 72 [2021-08-27 14:10:21,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 72 [2021-08-27 14:10:21,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 281 states and 329 transitions. [2021-08-27 14:10:21,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:21,613 INFO L681 BuchiCegarLoop]: Abstraction has 281 states and 329 transitions. [2021-08-27 14:10:21,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states and 329 transitions. [2021-08-27 14:10:21,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 199. [2021-08-27 14:10:21,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 199 states have (on average 1.1809045226130652) internal successors, (235), 198 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:21,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 235 transitions. [2021-08-27 14:10:21,616 INFO L704 BuchiCegarLoop]: Abstraction has 199 states and 235 transitions. [2021-08-27 14:10:21,616 INFO L587 BuchiCegarLoop]: Abstraction has 199 states and 235 transitions. [2021-08-27 14:10:21,616 INFO L425 BuchiCegarLoop]: ======== Iteration 19============ [2021-08-27 14:10:21,616 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 199 states and 235 transitions. [2021-08-27 14:10:21,617 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 61 [2021-08-27 14:10:21,617 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:21,617 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:21,617 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [15, 13, 13, 9, 5, 2, 1, 1] [2021-08-27 14:10:21,617 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [14, 13, 13, 9, 5, 1, 1] [2021-08-27 14:10:21,617 INFO L791 eck$LassoCheckResult]: Stem: 10450#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 10451#L18-1 assume !!(main_~i~0 > 0); 10571#L12 assume 1 == main_~i~0;main_~up~0 := 1; 10569#L12-2 assume !(10 == main_~i~0); 10458#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10459#L18-1 assume !!(main_~i~0 > 0); 10632#L12 assume !(1 == main_~i~0); 10630#L12-2 assume !(10 == main_~i~0); 10628#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10626#L18-1 assume !!(main_~i~0 > 0); 10624#L12 assume !(1 == main_~i~0); 10622#L12-2 assume !(10 == main_~i~0); 10620#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10618#L18-1 assume !!(main_~i~0 > 0); 10616#L12 assume !(1 == main_~i~0); 10614#L12-2 assume !(10 == main_~i~0); 10613#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10580#L18-1 assume !!(main_~i~0 > 0); 10550#L12 assume !(1 == main_~i~0); 10575#L12-2 assume !(10 == main_~i~0); 10551#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10549#L18-1 assume !!(main_~i~0 > 0); 10543#L12 assume !(1 == main_~i~0); 10442#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 10443#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10452#L18-1 assume !!(main_~i~0 > 0); 10537#L12 assume !(1 == main_~i~0); 10535#L12-2 assume !(10 == main_~i~0); 10533#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10531#L18-1 assume !!(main_~i~0 > 0); 10529#L12 assume !(1 == main_~i~0); 10527#L12-2 assume !(10 == main_~i~0); 10525#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10523#L18-1 assume !!(main_~i~0 > 0); 10521#L12 assume !(1 == main_~i~0); 10519#L12-2 assume !(10 == main_~i~0); 10517#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10515#L18-1 assume !!(main_~i~0 > 0); 10513#L12 assume !(1 == main_~i~0); 10511#L12-2 assume !(10 == main_~i~0); 10509#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10507#L18-1 assume !!(main_~i~0 > 0); 10505#L12 assume !(1 == main_~i~0); 10503#L12-2 assume !(10 == main_~i~0); 10501#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10499#L18-1 assume !!(main_~i~0 > 0); 10497#L12 assume !(1 == main_~i~0); 10495#L12-2 assume !(10 == main_~i~0); 10493#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10491#L18-1 assume !!(main_~i~0 > 0); 10489#L12 assume !(1 == main_~i~0); 10487#L12-2 assume !(10 == main_~i~0); 10485#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10483#L18-1 assume !!(main_~i~0 > 0); 10481#L12 assume !(1 == main_~i~0); 10473#L12-2 assume !(10 == main_~i~0); 10478#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10476#L18-1 assume !!(main_~i~0 > 0); 10472#L12 assume 1 == main_~i~0;main_~up~0 := 1; 10471#L12-2 [2021-08-27 14:10:21,618 INFO L793 eck$LassoCheckResult]: Loop: 10471#L12-2 assume !(10 == main_~i~0); 10466#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10567#L18-1 assume !!(main_~i~0 > 0); 10566#L12 assume !(1 == main_~i~0); 10565#L12-2 assume !(10 == main_~i~0); 10564#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10563#L18-1 assume !!(main_~i~0 > 0); 10562#L12 assume !(1 == main_~i~0); 10561#L12-2 assume !(10 == main_~i~0); 10560#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10559#L18-1 assume !!(main_~i~0 > 0); 10558#L12 assume !(1 == main_~i~0); 10557#L12-2 assume !(10 == main_~i~0); 10556#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10555#L18-1 assume !!(main_~i~0 > 0); 10554#L12 assume !(1 == main_~i~0); 10553#L12-2 assume !(10 == main_~i~0); 10542#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 10548#L18-1 assume !!(main_~i~0 > 0); 10546#L12 assume !(1 == main_~i~0); 10541#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 10460#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10461#L18-1 assume !!(main_~i~0 > 0); 10538#L12 assume !(1 == main_~i~0); 10536#L12-2 assume !(10 == main_~i~0); 10534#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10532#L18-1 assume !!(main_~i~0 > 0); 10530#L12 assume !(1 == main_~i~0); 10528#L12-2 assume !(10 == main_~i~0); 10526#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10524#L18-1 assume !!(main_~i~0 > 0); 10522#L12 assume !(1 == main_~i~0); 10520#L12-2 assume !(10 == main_~i~0); 10518#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10516#L18-1 assume !!(main_~i~0 > 0); 10514#L12 assume !(1 == main_~i~0); 10512#L12-2 assume !(10 == main_~i~0); 10510#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10508#L18-1 assume !!(main_~i~0 > 0); 10506#L12 assume !(1 == main_~i~0); 10504#L12-2 assume !(10 == main_~i~0); 10502#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10500#L18-1 assume !!(main_~i~0 > 0); 10498#L12 assume !(1 == main_~i~0); 10496#L12-2 assume !(10 == main_~i~0); 10494#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10492#L18-1 assume !!(main_~i~0 > 0); 10490#L12 assume !(1 == main_~i~0); 10488#L12-2 assume !(10 == main_~i~0); 10486#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10484#L18-1 assume !!(main_~i~0 > 0); 10482#L12 assume !(1 == main_~i~0); 10475#L12-2 assume !(10 == main_~i~0); 10479#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 10477#L18-1 assume !!(main_~i~0 > 0); 10474#L12 assume 1 == main_~i~0;main_~up~0 := 1; 10471#L12-2 [2021-08-27 14:10:21,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:21,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1566074253, now seen corresponding path program 12 times [2021-08-27 14:10:21,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:21,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176175874] [2021-08-27 14:10:21,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:21,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:21,654 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 211 proven. 45 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 14:10:21,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:21,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176175874] [2021-08-27 14:10:21,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176175874] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:21,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605801289] [2021-08-27 14:10:21,655 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-27 14:10:21,655 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:21,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:21,656 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:21,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-08-27 14:10:21,974 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-08-27 14:10:21,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 14:10:21,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 14:10:21,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 211 proven. 45 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 14:10:22,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605801289] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:22,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:22,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-08-27 14:10:22,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343500618] [2021-08-27 14:10:22,090 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:10:22,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:22,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1203416849, now seen corresponding path program 10 times [2021-08-27 14:10:22,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:22,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484891524] [2021-08-27 14:10:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:22,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:22,095 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:22,098 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:22,306 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:22,306 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:22,306 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:22,306 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:22,306 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:10:22,306 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:22,306 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:22,306 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:22,306 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration19_Loop [2021-08-27 14:10:22,306 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:22,306 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:22,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:22,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:22,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:22,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:22,353 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:22,354 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:10:22,354 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:22,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:22,354 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:22,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Waiting until timeout for monitored process [2021-08-27 14:10:22,356 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:22,356 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:22,364 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:22,365 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:22,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:22,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:22,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:22,380 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:22,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Waiting until timeout for monitored process [2021-08-27 14:10:22,382 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:22,382 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:22,394 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:22,394 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_18=1} Honda state: {v_rep~unnamed0~0~true_18=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:22,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Ended with exit code 0 [2021-08-27 14:10:22,409 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:22,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:22,410 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:22,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Waiting until timeout for monitored process [2021-08-27 14:10:22,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:22,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:22,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Ended with exit code 0 [2021-08-27 14:10:22,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:22,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:22,439 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:22,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Waiting until timeout for monitored process [2021-08-27 14:10:22,441 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:10:22,441 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:22,449 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:10:22,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:22,463 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:22,463 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:22,463 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:22,464 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:22,464 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:10:22,464 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:22,464 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:22,464 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:22,464 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration19_Loop [2021-08-27 14:10:22,464 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:22,464 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:22,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:22,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:22,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:22,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:22,504 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:22,504 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:10:22,504 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:22,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:22,505 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:22,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Waiting until timeout for monitored process [2021-08-27 14:10:22,507 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:22,513 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:22,513 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:22,513 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:22,513 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:22,513 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:22,513 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:22,513 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:22,515 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:22,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:22,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:22,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:22,530 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:22,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Waiting until timeout for monitored process [2021-08-27 14:10:22,531 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:22,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:22,537 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:22,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:22,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:22,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:22,538 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:22,538 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:22,540 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:10:22,541 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:10:22,541 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 14:10:22,541 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:22,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:22,542 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:22,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Waiting until timeout for monitored process [2021-08-27 14:10:22,543 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:10:22,543 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:10:22,543 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:10:22,543 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-08-27 14:10:22,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:22,558 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:10:22,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:22,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:10:22,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:22,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 14:10:22,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:22,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 14:10:22,904 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2021-08-27 14:10:22,904 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 199 states and 235 transitions. cyclomatic complexity: 45 Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:23,110 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 199 states and 235 transitions. cyclomatic complexity: 45. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1161 states and 1347 transitions. Complement of second has 27 states. [2021-08-27 14:10:23,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 1 stem states 12 non-accepting loop states 1 accepting loop states [2021-08-27 14:10:23,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:23,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 67 transitions. [2021-08-27 14:10:23,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 67 transitions. Stem has 59 letters. Loop has 56 letters. [2021-08-27 14:10:23,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:23,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 67 transitions. Stem has 115 letters. Loop has 56 letters. [2021-08-27 14:10:23,112 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:23,112 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 67 transitions. Stem has 59 letters. Loop has 112 letters. [2021-08-27 14:10:23,112 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:23,112 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1161 states and 1347 transitions. [2021-08-27 14:10:23,116 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 65 [2021-08-27 14:10:23,118 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1161 states to 812 states and 943 transitions. [2021-08-27 14:10:23,118 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 167 [2021-08-27 14:10:23,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 175 [2021-08-27 14:10:23,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 812 states and 943 transitions. [2021-08-27 14:10:23,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:23,119 INFO L681 BuchiCegarLoop]: Abstraction has 812 states and 943 transitions. [2021-08-27 14:10:23,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states and 943 transitions. [2021-08-27 14:10:23,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 525. [2021-08-27 14:10:23,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 525 states have (on average 1.1923809523809523) internal successors, (626), 524 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:23,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 626 transitions. [2021-08-27 14:10:23,124 INFO L704 BuchiCegarLoop]: Abstraction has 525 states and 626 transitions. [2021-08-27 14:10:23,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:23,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 14:10:23,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-08-27 14:10:23,125 INFO L87 Difference]: Start difference. First operand 525 states and 626 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:23,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:23,149 INFO L93 Difference]: Finished difference Result 357 states and 408 transitions. [2021-08-27 14:10:23,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 14:10:23,150 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 357 states and 408 transitions. [2021-08-27 14:10:23,151 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 87 [2021-08-27 14:10:23,152 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 357 states to 313 states and 364 transitions. [2021-08-27 14:10:23,152 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2021-08-27 14:10:23,152 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2021-08-27 14:10:23,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 313 states and 364 transitions. [2021-08-27 14:10:23,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:23,152 INFO L681 BuchiCegarLoop]: Abstraction has 313 states and 364 transitions. [2021-08-27 14:10:23,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states and 364 transitions. [2021-08-27 14:10:23,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 211. [2021-08-27 14:10:23,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 211 states have (on average 1.1706161137440758) internal successors, (247), 210 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:23,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 247 transitions. [2021-08-27 14:10:23,155 INFO L704 BuchiCegarLoop]: Abstraction has 211 states and 247 transitions. [2021-08-27 14:10:23,155 INFO L587 BuchiCegarLoop]: Abstraction has 211 states and 247 transitions. [2021-08-27 14:10:23,155 INFO L425 BuchiCegarLoop]: ======== Iteration 20============ [2021-08-27 14:10:23,155 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 211 states and 247 transitions. [2021-08-27 14:10:23,156 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 65 [2021-08-27 14:10:23,156 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:23,156 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:23,156 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [16, 14, 14, 9, 6, 2, 1, 1] [2021-08-27 14:10:23,156 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [15, 14, 14, 9, 6, 1, 1] [2021-08-27 14:10:23,157 INFO L791 eck$LassoCheckResult]: Stem: 13276#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 13277#L18-1 assume !!(main_~i~0 > 0); 13402#L12 assume 1 == main_~i~0;main_~up~0 := 1; 13403#L12-2 assume !(10 == main_~i~0); 13289#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13290#L18-1 assume !!(main_~i~0 > 0); 13473#L12 assume !(1 == main_~i~0); 13471#L12-2 assume !(10 == main_~i~0); 13469#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13467#L18-1 assume !!(main_~i~0 > 0); 13465#L12 assume !(1 == main_~i~0); 13463#L12-2 assume !(10 == main_~i~0); 13461#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13459#L18-1 assume !!(main_~i~0 > 0); 13457#L12 assume !(1 == main_~i~0); 13455#L12-2 assume !(10 == main_~i~0); 13453#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13451#L18-1 assume !!(main_~i~0 > 0); 13449#L12 assume !(1 == main_~i~0); 13447#L12-2 assume !(10 == main_~i~0); 13446#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13418#L18-1 assume !!(main_~i~0 > 0); 13372#L12 assume !(1 == main_~i~0); 13381#L12-2 assume !(10 == main_~i~0); 13375#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13371#L18-1 assume !!(main_~i~0 > 0); 13368#L12 assume !(1 == main_~i~0); 13369#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 13282#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13283#L18-1 assume !!(main_~i~0 > 0); 13367#L12 assume !(1 == main_~i~0); 13365#L12-2 assume !(10 == main_~i~0); 13363#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13361#L18-1 assume !!(main_~i~0 > 0); 13359#L12 assume !(1 == main_~i~0); 13357#L12-2 assume !(10 == main_~i~0); 13355#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13353#L18-1 assume !!(main_~i~0 > 0); 13351#L12 assume !(1 == main_~i~0); 13349#L12-2 assume !(10 == main_~i~0); 13347#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13345#L18-1 assume !!(main_~i~0 > 0); 13343#L12 assume !(1 == main_~i~0); 13341#L12-2 assume !(10 == main_~i~0); 13339#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13337#L18-1 assume !!(main_~i~0 > 0); 13335#L12 assume !(1 == main_~i~0); 13333#L12-2 assume !(10 == main_~i~0); 13331#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13329#L18-1 assume !!(main_~i~0 > 0); 13327#L12 assume !(1 == main_~i~0); 13325#L12-2 assume !(10 == main_~i~0); 13323#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13321#L18-1 assume !!(main_~i~0 > 0); 13319#L12 assume !(1 == main_~i~0); 13317#L12-2 assume !(10 == main_~i~0); 13315#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13313#L18-1 assume !!(main_~i~0 > 0); 13311#L12 assume !(1 == main_~i~0); 13304#L12-2 assume !(10 == main_~i~0); 13308#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13306#L18-1 assume !!(main_~i~0 > 0); 13303#L12 assume 1 == main_~i~0;main_~up~0 := 1; 13300#L12-2 [2021-08-27 14:10:23,157 INFO L793 eck$LassoCheckResult]: Loop: 13300#L12-2 assume !(10 == main_~i~0); 13295#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13401#L18-1 assume !!(main_~i~0 > 0); 13400#L12 assume !(1 == main_~i~0); 13399#L12-2 assume !(10 == main_~i~0); 13398#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13397#L18-1 assume !!(main_~i~0 > 0); 13396#L12 assume !(1 == main_~i~0); 13395#L12-2 assume !(10 == main_~i~0); 13394#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13393#L18-1 assume !!(main_~i~0 > 0); 13392#L12 assume !(1 == main_~i~0); 13391#L12-2 assume !(10 == main_~i~0); 13390#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13389#L18-1 assume !!(main_~i~0 > 0); 13388#L12 assume !(1 == main_~i~0); 13387#L12-2 assume !(10 == main_~i~0); 13386#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13385#L18-1 assume !!(main_~i~0 > 0); 13384#L12 assume !(1 == main_~i~0); 13383#L12-2 assume !(10 == main_~i~0); 13374#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13379#L18-1 assume !!(main_~i~0 > 0); 13376#L12 assume !(1 == main_~i~0); 13373#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 13273#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13291#L18-1 assume !!(main_~i~0 > 0); 13366#L12 assume !(1 == main_~i~0); 13364#L12-2 assume !(10 == main_~i~0); 13362#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13360#L18-1 assume !!(main_~i~0 > 0); 13358#L12 assume !(1 == main_~i~0); 13356#L12-2 assume !(10 == main_~i~0); 13354#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13352#L18-1 assume !!(main_~i~0 > 0); 13350#L12 assume !(1 == main_~i~0); 13348#L12-2 assume !(10 == main_~i~0); 13346#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13344#L18-1 assume !!(main_~i~0 > 0); 13342#L12 assume !(1 == main_~i~0); 13340#L12-2 assume !(10 == main_~i~0); 13338#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13336#L18-1 assume !!(main_~i~0 > 0); 13334#L12 assume !(1 == main_~i~0); 13332#L12-2 assume !(10 == main_~i~0); 13330#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13328#L18-1 assume !!(main_~i~0 > 0); 13326#L12 assume !(1 == main_~i~0); 13324#L12-2 assume !(10 == main_~i~0); 13322#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13320#L18-1 assume !!(main_~i~0 > 0); 13318#L12 assume !(1 == main_~i~0); 13316#L12-2 assume !(10 == main_~i~0); 13314#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13312#L18-1 assume !!(main_~i~0 > 0); 13310#L12 assume !(1 == main_~i~0); 13302#L12-2 assume !(10 == main_~i~0); 13307#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13305#L18-1 assume !!(main_~i~0 > 0); 13301#L12 assume 1 == main_~i~0;main_~up~0 := 1; 13300#L12-2 [2021-08-27 14:10:23,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:23,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1417622308, now seen corresponding path program 13 times [2021-08-27 14:10:23,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:23,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488632358] [2021-08-27 14:10:23,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:23,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:23,199 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 248 proven. 66 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 14:10:23,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:23,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488632358] [2021-08-27 14:10:23,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488632358] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:23,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3494690] [2021-08-27 14:10:23,200 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 14:10:23,200 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:23,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:23,201 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:23,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-08-27 14:10:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:23,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 14:10:23,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 248 proven. 66 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 14:10:23,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3494690] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:23,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:23,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-08-27 14:10:23,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429223145] [2021-08-27 14:10:23,754 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:10:23,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:23,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1315151238, now seen corresponding path program 11 times [2021-08-27 14:10:23,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:23,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291121365] [2021-08-27 14:10:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:23,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:23,759 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:23,763 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:23,980 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:23,981 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:23,981 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:23,981 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:23,981 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:10:23,981 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:23,981 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:23,981 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:23,981 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration20_Loop [2021-08-27 14:10:23,981 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:23,982 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:23,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:23,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:23,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:23,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:24,026 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:24,026 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:10:24,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:24,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:24,027 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:24,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Waiting until timeout for monitored process [2021-08-27 14:10:24,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:24,029 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:24,043 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:24,043 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_20=0} Honda state: {v_rep~unnamed0~0~false_20=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:24,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Ended with exit code 0 [2021-08-27 14:10:24,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:24,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:24,059 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:24,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (104)] Waiting until timeout for monitored process [2021-08-27 14:10:24,061 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:24,061 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:24,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (104)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:24,087 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:24,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:24,088 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:24,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (105)] Waiting until timeout for monitored process [2021-08-27 14:10:24,090 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:10:24,090 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:24,098 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:10:24,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (105)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:24,113 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:24,113 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:24,113 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:24,113 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:24,113 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:10:24,113 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:24,113 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:24,113 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:24,113 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration20_Loop [2021-08-27 14:10:24,113 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:24,113 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:24,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:24,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:24,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:24,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:24,155 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:24,155 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:10:24,155 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:24,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:24,156 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:24,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Waiting until timeout for monitored process [2021-08-27 14:10:24,158 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:24,166 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:24,166 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:24,166 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:24,166 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:24,167 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:24,168 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:24,173 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:24,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Ended with exit code 0 [2021-08-27 14:10:24,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:24,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:24,190 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:24,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Waiting until timeout for monitored process [2021-08-27 14:10:24,192 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:24,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:24,201 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:24,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:24,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:24,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:24,202 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:24,202 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:24,204 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:10:24,207 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:10:24,207 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 14:10:24,208 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:24,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:24,209 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:24,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Waiting until timeout for monitored process [2021-08-27 14:10:24,210 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:10:24,210 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:10:24,210 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:10:24,210 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-08-27 14:10:24,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Ended with exit code 0 [2021-08-27 14:10:24,226 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:10:24,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:24,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:10:24,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:24,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 14:10:24,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:24,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 284 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 14:10:24,637 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 8 loop predicates [2021-08-27 14:10:24,637 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 211 states and 247 transitions. cyclomatic complexity: 45 Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:24,888 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 211 states and 247 transitions. cyclomatic complexity: 45. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1457 states and 1676 transitions. Complement of second has 31 states. [2021-08-27 14:10:24,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 1 stem states 14 non-accepting loop states 1 accepting loop states [2021-08-27 14:10:24,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 77 transitions. [2021-08-27 14:10:24,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 77 transitions. Stem has 63 letters. Loop has 60 letters. [2021-08-27 14:10:24,889 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:24,889 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 77 transitions. Stem has 123 letters. Loop has 60 letters. [2021-08-27 14:10:24,889 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:24,890 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 77 transitions. Stem has 63 letters. Loop has 120 letters. [2021-08-27 14:10:24,890 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:24,890 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1457 states and 1676 transitions. [2021-08-27 14:10:24,894 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 69 [2021-08-27 14:10:24,896 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1457 states to 980 states and 1131 transitions. [2021-08-27 14:10:24,896 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 196 [2021-08-27 14:10:24,897 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 205 [2021-08-27 14:10:24,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 980 states and 1131 transitions. [2021-08-27 14:10:24,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:24,897 INFO L681 BuchiCegarLoop]: Abstraction has 980 states and 1131 transitions. [2021-08-27 14:10:24,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states and 1131 transitions. [2021-08-27 14:10:24,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 597. [2021-08-27 14:10:24,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 597 states have (on average 1.1926298157453936) internal successors, (712), 596 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:24,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 712 transitions. [2021-08-27 14:10:24,903 INFO L704 BuchiCegarLoop]: Abstraction has 597 states and 712 transitions. [2021-08-27 14:10:24,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:24,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-27 14:10:24,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-08-27 14:10:24,904 INFO L87 Difference]: Start difference. First operand 597 states and 712 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:24,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:24,936 INFO L93 Difference]: Finished difference Result 397 states and 451 transitions. [2021-08-27 14:10:24,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-27 14:10:24,936 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 397 states and 451 transitions. [2021-08-27 14:10:24,937 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 95 [2021-08-27 14:10:24,938 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 397 states to 345 states and 399 transitions. [2021-08-27 14:10:24,938 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 80 [2021-08-27 14:10:24,939 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 80 [2021-08-27 14:10:24,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 345 states and 399 transitions. [2021-08-27 14:10:24,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:24,939 INFO L681 BuchiCegarLoop]: Abstraction has 345 states and 399 transitions. [2021-08-27 14:10:24,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states and 399 transitions. [2021-08-27 14:10:24,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 223. [2021-08-27 14:10:24,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 223 states have (on average 1.1614349775784754) internal successors, (259), 222 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:24,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 259 transitions. [2021-08-27 14:10:24,942 INFO L704 BuchiCegarLoop]: Abstraction has 223 states and 259 transitions. [2021-08-27 14:10:24,942 INFO L587 BuchiCegarLoop]: Abstraction has 223 states and 259 transitions. [2021-08-27 14:10:24,942 INFO L425 BuchiCegarLoop]: ======== Iteration 21============ [2021-08-27 14:10:24,942 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 223 states and 259 transitions. [2021-08-27 14:10:24,942 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 69 [2021-08-27 14:10:24,943 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:24,943 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:24,943 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [17, 15, 15, 9, 7, 2, 1, 1] [2021-08-27 14:10:24,943 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [16, 15, 15, 9, 7, 1, 1] [2021-08-27 14:10:24,943 INFO L791 eck$LassoCheckResult]: Stem: 16575#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 16576#L18-1 assume !!(main_~i~0 > 0); 16700#L12 assume 1 == main_~i~0;main_~up~0 := 1; 16589#L12-2 assume !(10 == main_~i~0); 16590#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16777#L18-1 assume !!(main_~i~0 > 0); 16775#L12 assume !(1 == main_~i~0); 16773#L12-2 assume !(10 == main_~i~0); 16771#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16769#L18-1 assume !!(main_~i~0 > 0); 16767#L12 assume !(1 == main_~i~0); 16765#L12-2 assume !(10 == main_~i~0); 16763#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16761#L18-1 assume !!(main_~i~0 > 0); 16759#L12 assume !(1 == main_~i~0); 16757#L12-2 assume !(10 == main_~i~0); 16755#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16753#L18-1 assume !!(main_~i~0 > 0); 16751#L12 assume !(1 == main_~i~0); 16749#L12-2 assume !(10 == main_~i~0); 16747#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16745#L18-1 assume !!(main_~i~0 > 0); 16743#L12 assume !(1 == main_~i~0); 16742#L12-2 assume !(10 == main_~i~0); 16713#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16711#L18-1 assume !!(main_~i~0 > 0); 16606#L12 assume !(1 == main_~i~0); 16707#L12-2 assume !(10 == main_~i~0); 16607#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16605#L18-1 assume !!(main_~i~0 > 0); 16604#L12 assume !(1 == main_~i~0); 16567#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 16568#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16577#L18-1 assume !!(main_~i~0 > 0); 16697#L12 assume !(1 == main_~i~0); 16696#L12-2 assume !(10 == main_~i~0); 16695#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16693#L18-1 assume !!(main_~i~0 > 0); 16690#L12 assume !(1 == main_~i~0); 16688#L12-2 assume !(10 == main_~i~0); 16686#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16684#L18-1 assume !!(main_~i~0 > 0); 16682#L12 assume !(1 == main_~i~0); 16680#L12-2 assume !(10 == main_~i~0); 16678#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16676#L18-1 assume !!(main_~i~0 > 0); 16674#L12 assume !(1 == main_~i~0); 16672#L12-2 assume !(10 == main_~i~0); 16670#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16668#L18-1 assume !!(main_~i~0 > 0); 16666#L12 assume !(1 == main_~i~0); 16664#L12-2 assume !(10 == main_~i~0); 16662#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16660#L18-1 assume !!(main_~i~0 > 0); 16658#L12 assume !(1 == main_~i~0); 16656#L12-2 assume !(10 == main_~i~0); 16654#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16652#L18-1 assume !!(main_~i~0 > 0); 16650#L12 assume !(1 == main_~i~0); 16648#L12-2 assume !(10 == main_~i~0); 16646#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16644#L18-1 assume !!(main_~i~0 > 0); 16642#L12 assume !(1 == main_~i~0); 16634#L12-2 assume !(10 == main_~i~0); 16639#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16637#L18-1 assume !!(main_~i~0 > 0); 16633#L12 assume 1 == main_~i~0;main_~up~0 := 1; 16632#L12-2 [2021-08-27 14:10:24,943 INFO L793 eck$LassoCheckResult]: Loop: 16632#L12-2 assume !(10 == main_~i~0); 16593#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16631#L18-1 assume !!(main_~i~0 > 0); 16630#L12 assume !(1 == main_~i~0); 16629#L12-2 assume !(10 == main_~i~0); 16628#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16627#L18-1 assume !!(main_~i~0 > 0); 16626#L12 assume !(1 == main_~i~0); 16625#L12-2 assume !(10 == main_~i~0); 16624#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16623#L18-1 assume !!(main_~i~0 > 0); 16622#L12 assume !(1 == main_~i~0); 16621#L12-2 assume !(10 == main_~i~0); 16620#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16619#L18-1 assume !!(main_~i~0 > 0); 16618#L12 assume !(1 == main_~i~0); 16617#L12-2 assume !(10 == main_~i~0); 16616#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16615#L18-1 assume !!(main_~i~0 > 0); 16614#L12 assume !(1 == main_~i~0); 16613#L12-2 assume !(10 == main_~i~0); 16612#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16611#L18-1 assume !!(main_~i~0 > 0); 16610#L12 assume !(1 == main_~i~0); 16609#L12-2 assume !(10 == main_~i~0); 16595#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16600#L18-1 assume !!(main_~i~0 > 0); 16597#L12 assume !(1 == main_~i~0); 16594#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 16587#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16694#L18-1 assume !!(main_~i~0 > 0); 16691#L12 assume !(1 == main_~i~0); 16588#L12-2 assume !(10 == main_~i~0); 16584#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16585#L18-1 assume !!(main_~i~0 > 0); 16692#L12 assume !(1 == main_~i~0); 16689#L12-2 assume !(10 == main_~i~0); 16687#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16685#L18-1 assume !!(main_~i~0 > 0); 16683#L12 assume !(1 == main_~i~0); 16681#L12-2 assume !(10 == main_~i~0); 16679#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16677#L18-1 assume !!(main_~i~0 > 0); 16675#L12 assume !(1 == main_~i~0); 16673#L12-2 assume !(10 == main_~i~0); 16671#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16669#L18-1 assume !!(main_~i~0 > 0); 16667#L12 assume !(1 == main_~i~0); 16665#L12-2 assume !(10 == main_~i~0); 16663#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16661#L18-1 assume !!(main_~i~0 > 0); 16659#L12 assume !(1 == main_~i~0); 16657#L12-2 assume !(10 == main_~i~0); 16655#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16653#L18-1 assume !!(main_~i~0 > 0); 16651#L12 assume !(1 == main_~i~0); 16649#L12-2 assume !(10 == main_~i~0); 16647#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16645#L18-1 assume !!(main_~i~0 > 0); 16643#L12 assume !(1 == main_~i~0); 16636#L12-2 assume !(10 == main_~i~0); 16640#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16638#L18-1 assume !!(main_~i~0 > 0); 16635#L12 assume 1 == main_~i~0;main_~up~0 := 1; 16632#L12-2 [2021-08-27 14:10:24,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:24,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1714987717, now seen corresponding path program 14 times [2021-08-27 14:10:24,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:24,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290206405] [2021-08-27 14:10:24,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:24,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:25,002 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 285 proven. 91 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 14:10:25,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:25,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290206405] [2021-08-27 14:10:25,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290206405] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:25,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038952895] [2021-08-27 14:10:25,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 14:10:25,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:25,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:25,005 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:25,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2021-08-27 14:10:25,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 14:10:25,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 14:10:25,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 14:10:25,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:25,604 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 285 proven. 91 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 14:10:25,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038952895] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:25,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:25,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-08-27 14:10:25,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31649855] [2021-08-27 14:10:25,605 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:10:25,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:25,605 INFO L82 PathProgramCache]: Analyzing trace with hash 590625123, now seen corresponding path program 12 times [2021-08-27 14:10:25,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:25,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488375369] [2021-08-27 14:10:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:25,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:25,610 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:25,626 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:25,878 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:25,878 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:25,878 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:25,878 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:25,878 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:10:25,878 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:25,878 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:25,878 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:25,878 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration21_Loop [2021-08-27 14:10:25,878 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:25,878 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:25,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:25,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:25,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:25,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:25,921 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:25,921 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:10:25,921 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:25,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:25,922 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:25,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Waiting until timeout for monitored process [2021-08-27 14:10:25,924 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:25,924 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:25,936 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:25,936 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_22=1} Honda state: {v_rep~unnamed0~0~true_22=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:25,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:25,951 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:25,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:25,952 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:25,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (111)] Waiting until timeout for monitored process [2021-08-27 14:10:25,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:25,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:25,964 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:10:25,965 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_22=0} Honda state: {v_rep~unnamed0~0~false_22=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:10:25,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (111)] Ended with exit code 0 [2021-08-27 14:10:25,979 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:25,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:25,980 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:25,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (112)] Waiting until timeout for monitored process [2021-08-27 14:10:25,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:25,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:26,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (112)] Ended with exit code 0 [2021-08-27 14:10:26,009 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:26,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:26,009 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:26,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Waiting until timeout for monitored process [2021-08-27 14:10:26,011 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:10:26,011 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:26,019 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:10:26,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Ended with exit code 0 [2021-08-27 14:10:26,034 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:26,034 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:26,034 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:26,034 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:26,034 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:10:26,034 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:26,034 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:26,034 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:26,034 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration21_Loop [2021-08-27 14:10:26,034 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:26,035 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:26,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:26,037 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:26,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:26,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:26,091 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:26,091 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:10:26,091 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:26,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:26,092 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:26,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (114)] Waiting until timeout for monitored process [2021-08-27 14:10:26,093 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:26,099 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:26,099 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:26,099 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:26,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:26,100 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:10:26,101 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:10:26,103 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:10:26,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (114)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:26,117 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:26,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:26,118 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:26,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (115)] Waiting until timeout for monitored process [2021-08-27 14:10:26,120 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:26,126 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:26,126 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:26,126 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:26,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:26,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:26,127 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:26,127 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:26,128 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:10:26,130 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:10:26,130 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 14:10:26,130 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:26,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:26,131 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:26,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (116)] Waiting until timeout for monitored process [2021-08-27 14:10:26,132 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:10:26,133 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:10:26,133 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:10:26,133 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-08-27 14:10:26,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (115)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:26,148 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:10:26,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:26,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:10:26,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:26,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 14:10:26,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:26,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (116)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:26,561 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 344 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 14:10:26,561 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2021-08-27 14:10:26,562 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 223 states and 259 transitions. cyclomatic complexity: 45 Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:26,852 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 223 states and 259 transitions. cyclomatic complexity: 45. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1793 states and 2049 transitions. Complement of second has 35 states. [2021-08-27 14:10:26,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 18 states 1 stem states 16 non-accepting loop states 1 accepting loop states [2021-08-27 14:10:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 87 transitions. [2021-08-27 14:10:26,854 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 87 transitions. Stem has 67 letters. Loop has 64 letters. [2021-08-27 14:10:26,854 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:26,854 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 87 transitions. Stem has 131 letters. Loop has 64 letters. [2021-08-27 14:10:26,854 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:26,854 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 87 transitions. Stem has 67 letters. Loop has 128 letters. [2021-08-27 14:10:26,855 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:26,855 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1793 states and 2049 transitions. [2021-08-27 14:10:26,860 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 73 [2021-08-27 14:10:26,862 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1793 states to 1168 states and 1341 transitions. [2021-08-27 14:10:26,862 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 229 [2021-08-27 14:10:26,863 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 239 [2021-08-27 14:10:26,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1168 states and 1341 transitions. [2021-08-27 14:10:26,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:26,867 INFO L681 BuchiCegarLoop]: Abstraction has 1168 states and 1341 transitions. [2021-08-27 14:10:26,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states and 1341 transitions. [2021-08-27 14:10:26,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 677. [2021-08-27 14:10:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 677 states have (on average 1.1935007385524372) internal successors, (808), 676 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 808 transitions. [2021-08-27 14:10:26,873 INFO L704 BuchiCegarLoop]: Abstraction has 677 states and 808 transitions. [2021-08-27 14:10:26,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:26,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 14:10:26,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-08-27 14:10:26,874 INFO L87 Difference]: Start difference. First operand 677 states and 808 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:26,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:26,907 INFO L93 Difference]: Finished difference Result 437 states and 494 transitions. [2021-08-27 14:10:26,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 14:10:26,907 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 437 states and 494 transitions. [2021-08-27 14:10:26,909 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 103 [2021-08-27 14:10:26,909 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 437 states to 377 states and 434 transitions. [2021-08-27 14:10:26,910 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 84 [2021-08-27 14:10:26,910 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 84 [2021-08-27 14:10:26,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 377 states and 434 transitions. [2021-08-27 14:10:26,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:26,911 INFO L681 BuchiCegarLoop]: Abstraction has 377 states and 434 transitions. [2021-08-27 14:10:26,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states and 434 transitions. [2021-08-27 14:10:26,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 235. [2021-08-27 14:10:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 235 states have (on average 1.1531914893617021) internal successors, (271), 234 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:26,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 271 transitions. [2021-08-27 14:10:26,914 INFO L704 BuchiCegarLoop]: Abstraction has 235 states and 271 transitions. [2021-08-27 14:10:26,914 INFO L587 BuchiCegarLoop]: Abstraction has 235 states and 271 transitions. [2021-08-27 14:10:26,914 INFO L425 BuchiCegarLoop]: ======== Iteration 22============ [2021-08-27 14:10:26,914 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 235 states and 271 transitions. [2021-08-27 14:10:26,915 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 73 [2021-08-27 14:10:26,915 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:26,915 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:26,915 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [18, 16, 16, 9, 8, 2, 1, 1] [2021-08-27 14:10:26,915 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [17, 16, 16, 9, 8, 1, 1] [2021-08-27 14:10:26,916 INFO L791 eck$LassoCheckResult]: Stem: 20384#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 20385#L18-1 assume !!(main_~i~0 > 0); 20511#L12 assume 1 == main_~i~0;main_~up~0 := 1; 20567#L12-2 assume !(10 == main_~i~0); 20566#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20380#L18-1 assume !!(main_~i~0 > 0); 20381#L12 assume !(1 == main_~i~0); 20564#L12-2 assume !(10 == main_~i~0); 20562#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20560#L18-1 assume !!(main_~i~0 > 0); 20558#L12 assume !(1 == main_~i~0); 20556#L12-2 assume !(10 == main_~i~0); 20554#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20552#L18-1 assume !!(main_~i~0 > 0); 20550#L12 assume !(1 == main_~i~0); 20548#L12-2 assume !(10 == main_~i~0); 20546#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20544#L18-1 assume !!(main_~i~0 > 0); 20542#L12 assume !(1 == main_~i~0); 20540#L12-2 assume !(10 == main_~i~0); 20538#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20536#L18-1 assume !!(main_~i~0 > 0); 20534#L12 assume !(1 == main_~i~0); 20532#L12-2 assume !(10 == main_~i~0); 20530#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20528#L18-1 assume !!(main_~i~0 > 0); 20526#L12 assume !(1 == main_~i~0); 20524#L12-2 assume !(10 == main_~i~0); 20522#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20520#L18-1 assume !!(main_~i~0 > 0); 20412#L12 assume !(1 == main_~i~0); 20517#L12-2 assume !(10 == main_~i~0); 20413#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20411#L18-1 assume !!(main_~i~0 > 0); 20410#L12 assume !(1 == main_~i~0); 20409#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 20386#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20387#L18-1 assume !!(main_~i~0 > 0); 20509#L12 assume !(1 == main_~i~0); 20508#L12-2 assume !(10 == main_~i~0); 20507#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20506#L18-1 assume !!(main_~i~0 > 0); 20504#L12 assume !(1 == main_~i~0); 20501#L12-2 assume !(10 == main_~i~0); 20499#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20497#L18-1 assume !!(main_~i~0 > 0); 20495#L12 assume !(1 == main_~i~0); 20493#L12-2 assume !(10 == main_~i~0); 20491#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20489#L18-1 assume !!(main_~i~0 > 0); 20487#L12 assume !(1 == main_~i~0); 20485#L12-2 assume !(10 == main_~i~0); 20483#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20481#L18-1 assume !!(main_~i~0 > 0); 20479#L12 assume !(1 == main_~i~0); 20477#L12-2 assume !(10 == main_~i~0); 20475#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20473#L18-1 assume !!(main_~i~0 > 0); 20471#L12 assume !(1 == main_~i~0); 20469#L12-2 assume !(10 == main_~i~0); 20467#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20465#L18-1 assume !!(main_~i~0 > 0); 20463#L12 assume !(1 == main_~i~0); 20461#L12-2 assume !(10 == main_~i~0); 20459#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20457#L18-1 assume !!(main_~i~0 > 0); 20455#L12 assume !(1 == main_~i~0); 20448#L12-2 assume !(10 == main_~i~0); 20452#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20450#L18-1 assume !!(main_~i~0 > 0); 20447#L12 assume 1 == main_~i~0;main_~up~0 := 1; 20442#L12-2 [2021-08-27 14:10:26,916 INFO L793 eck$LassoCheckResult]: Loop: 20442#L12-2 assume !(10 == main_~i~0); 20439#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20438#L18-1 assume !!(main_~i~0 > 0); 20437#L12 assume !(1 == main_~i~0); 20436#L12-2 assume !(10 == main_~i~0); 20435#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20434#L18-1 assume !!(main_~i~0 > 0); 20433#L12 assume !(1 == main_~i~0); 20432#L12-2 assume !(10 == main_~i~0); 20431#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20430#L18-1 assume !!(main_~i~0 > 0); 20429#L12 assume !(1 == main_~i~0); 20428#L12-2 assume !(10 == main_~i~0); 20427#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20426#L18-1 assume !!(main_~i~0 > 0); 20425#L12 assume !(1 == main_~i~0); 20424#L12-2 assume !(10 == main_~i~0); 20423#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20422#L18-1 assume !!(main_~i~0 > 0); 20421#L12 assume !(1 == main_~i~0); 20420#L12-2 assume !(10 == main_~i~0); 20419#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20418#L18-1 assume !!(main_~i~0 > 0); 20417#L12 assume !(1 == main_~i~0); 20416#L12-2 assume !(10 == main_~i~0); 20415#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20414#L18-1 assume !!(main_~i~0 > 0); 20408#L12 assume !(1 == main_~i~0); 20407#L12-2 assume !(10 == main_~i~0); 20405#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 20403#L18-1 assume !!(main_~i~0 > 0); 20398#L12 assume !(1 == main_~i~0); 20399#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 20396#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20505#L18-1 assume !!(main_~i~0 > 0); 20502#L12 assume !(1 == main_~i~0); 20397#L12-2 assume !(10 == main_~i~0); 20393#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20394#L18-1 assume !!(main_~i~0 > 0); 20503#L12 assume !(1 == main_~i~0); 20500#L12-2 assume !(10 == main_~i~0); 20498#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20496#L18-1 assume !!(main_~i~0 > 0); 20494#L12 assume !(1 == main_~i~0); 20492#L12-2 assume !(10 == main_~i~0); 20490#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20488#L18-1 assume !!(main_~i~0 > 0); 20486#L12 assume !(1 == main_~i~0); 20484#L12-2 assume !(10 == main_~i~0); 20482#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20480#L18-1 assume !!(main_~i~0 > 0); 20478#L12 assume !(1 == main_~i~0); 20476#L12-2 assume !(10 == main_~i~0); 20474#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20472#L18-1 assume !!(main_~i~0 > 0); 20470#L12 assume !(1 == main_~i~0); 20468#L12-2 assume !(10 == main_~i~0); 20466#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20464#L18-1 assume !!(main_~i~0 > 0); 20462#L12 assume !(1 == main_~i~0); 20460#L12-2 assume !(10 == main_~i~0); 20458#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20456#L18-1 assume !!(main_~i~0 > 0); 20454#L12 assume !(1 == main_~i~0); 20446#L12-2 assume !(10 == main_~i~0); 20451#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 20449#L18-1 assume !!(main_~i~0 > 0); 20445#L12 assume 1 == main_~i~0;main_~up~0 := 1; 20442#L12-2 [2021-08-27 14:10:26,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:26,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1278125010, now seen corresponding path program 15 times [2021-08-27 14:10:26,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:26,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706530004] [2021-08-27 14:10:26,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:26,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 322 proven. 120 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 14:10:26,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:10:26,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706530004] [2021-08-27 14:10:26,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706530004] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:26,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048269773] [2021-08-27 14:10:26,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 14:10:26,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 14:10:26,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:26,981 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 14:10:27,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2021-08-27 14:10:27,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-08-27 14:10:27,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 14:10:27,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-27 14:10:27,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 322 proven. 226 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-08-27 14:10:27,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048269773] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 14:10:27,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 14:10:27,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 12 [2021-08-27 14:10:27,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963428054] [2021-08-27 14:10:27,658 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:10:27,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:27,658 INFO L82 PathProgramCache]: Analyzing trace with hash -976981044, now seen corresponding path program 13 times [2021-08-27 14:10:27,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:27,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847215863] [2021-08-27 14:10:27,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:27,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:27,664 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:27,667 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:27,930 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:27,930 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:27,930 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:27,930 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:27,930 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:10:27,930 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:27,930 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:27,930 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:27,930 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration22_Loop [2021-08-27 14:10:27,930 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:27,930 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:27,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:27,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:27,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:27,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:27,978 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:27,978 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:10:27,978 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:27,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:27,981 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:27,987 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:10:27,987 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:27,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (118)] Waiting until timeout for monitored process [2021-08-27 14:10:28,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (118)] Ended with exit code 0 [2021-08-27 14:10:28,019 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:28,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:28,020 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:28,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Waiting until timeout for monitored process [2021-08-27 14:10:28,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:10:28,022 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:10:28,033 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:10:28,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Ended with exit code 0 [2021-08-27 14:10:28,047 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:10:28,048 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:10:28,048 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:10:28,048 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:10:28,048 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:10:28,048 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:28,048 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:10:28,048 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:10:28,048 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration22_Loop [2021-08-27 14:10:28,048 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:10:28,048 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:10:28,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:28,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:28,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:28,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:10:28,102 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:10:28,103 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:10:28,103 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:28,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:28,104 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:28,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Waiting until timeout for monitored process [2021-08-27 14:10:28,106 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:10:28,111 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:10:28,111 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:10:28,112 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:10:28,112 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:10:28,112 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:10:28,112 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:10:28,112 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:10:28,116 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:10:28,117 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-27 14:10:28,118 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:10:28,118 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:10:28,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:10:28,125 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:10:28,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Waiting until timeout for monitored process [2021-08-27 14:10:28,129 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:10:28,129 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:10:28,129 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:10:28,129 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-08-27 14:10:28,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Ended with exit code 0 [2021-08-27 14:10:28,144 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:10:28,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:28,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:10:28,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:10:28,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 14:10:28,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:10:28,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-08-27 14:10:28,585 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 10 loop predicates [2021-08-27 14:10:28,585 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 235 states and 271 transitions. cyclomatic complexity: 45 Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:28,964 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 235 states and 271 transitions. cyclomatic complexity: 45. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 2169 states and 2468 transitions. Complement of second has 39 states. [2021-08-27 14:10:28,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 20 states 1 stem states 18 non-accepting loop states 1 accepting loop states [2021-08-27 14:10:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:28,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 97 transitions. [2021-08-27 14:10:28,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 97 transitions. Stem has 71 letters. Loop has 68 letters. [2021-08-27 14:10:28,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:28,966 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 97 transitions. Stem has 139 letters. Loop has 68 letters. [2021-08-27 14:10:28,966 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:28,966 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 97 transitions. Stem has 71 letters. Loop has 136 letters. [2021-08-27 14:10:28,966 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:10:28,966 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2169 states and 2468 transitions. [2021-08-27 14:10:28,972 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-08-27 14:10:28,975 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2169 states to 1376 states and 1575 transitions. [2021-08-27 14:10:28,975 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 266 [2021-08-27 14:10:28,976 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 277 [2021-08-27 14:10:28,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1376 states and 1575 transitions. [2021-08-27 14:10:28,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:28,976 INFO L681 BuchiCegarLoop]: Abstraction has 1376 states and 1575 transitions. [2021-08-27 14:10:28,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states and 1575 transitions. [2021-08-27 14:10:28,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 765. [2021-08-27 14:10:28,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 765 states have (on average 1.1947712418300653) internal successors, (914), 764 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:28,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 914 transitions. [2021-08-27 14:10:28,984 INFO L704 BuchiCegarLoop]: Abstraction has 765 states and 914 transitions. [2021-08-27 14:10:28,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:10:28,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 14:10:28,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-08-27 14:10:28,985 INFO L87 Difference]: Start difference. First operand 765 states and 914 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:29,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:10:29,028 INFO L93 Difference]: Finished difference Result 477 states and 537 transitions. [2021-08-27 14:10:29,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 14:10:29,029 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 477 states and 537 transitions. [2021-08-27 14:10:29,030 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 111 [2021-08-27 14:10:29,031 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 477 states to 409 states and 469 transitions. [2021-08-27 14:10:29,031 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 88 [2021-08-27 14:10:29,031 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 88 [2021-08-27 14:10:29,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 409 states and 469 transitions. [2021-08-27 14:10:29,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:10:29,032 INFO L681 BuchiCegarLoop]: Abstraction has 409 states and 469 transitions. [2021-08-27 14:10:29,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states and 469 transitions. [2021-08-27 14:10:29,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 247. [2021-08-27 14:10:29,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 247 states have (on average 1.145748987854251) internal successors, (283), 246 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:10:29,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 283 transitions. [2021-08-27 14:10:29,035 INFO L704 BuchiCegarLoop]: Abstraction has 247 states and 283 transitions. [2021-08-27 14:10:29,035 INFO L587 BuchiCegarLoop]: Abstraction has 247 states and 283 transitions. [2021-08-27 14:10:29,035 INFO L425 BuchiCegarLoop]: ======== Iteration 23============ [2021-08-27 14:10:29,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 247 states and 283 transitions. [2021-08-27 14:10:29,036 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2021-08-27 14:10:29,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:10:29,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:10:29,036 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [19, 17, 17, 9, 9, 2, 1, 1] [2021-08-27 14:10:29,036 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [18, 17, 17, 9, 9, 1, 1] [2021-08-27 14:10:29,037 INFO L791 eck$LassoCheckResult]: Stem: 24754#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 24755#L18-1 assume !!(main_~i~0 > 0); 24886#L12 assume 1 == main_~i~0;main_~up~0 := 1; 24950#L12-2 assume !(10 == main_~i~0); 24949#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24750#L18-1 assume !!(main_~i~0 > 0); 24751#L12 assume !(1 == main_~i~0); 24946#L12-2 assume !(10 == main_~i~0); 24944#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24942#L18-1 assume !!(main_~i~0 > 0); 24940#L12 assume !(1 == main_~i~0); 24938#L12-2 assume !(10 == main_~i~0); 24936#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24934#L18-1 assume !!(main_~i~0 > 0); 24932#L12 assume !(1 == main_~i~0); 24930#L12-2 assume !(10 == main_~i~0); 24928#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24926#L18-1 assume !!(main_~i~0 > 0); 24924#L12 assume !(1 == main_~i~0); 24922#L12-2 assume !(10 == main_~i~0); 24920#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24918#L18-1 assume !!(main_~i~0 > 0); 24916#L12 assume !(1 == main_~i~0); 24914#L12-2 assume !(10 == main_~i~0); 24912#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24910#L18-1 assume !!(main_~i~0 > 0); 24908#L12 assume !(1 == main_~i~0); 24906#L12-2 assume !(10 == main_~i~0); 24904#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24902#L18-1 assume !!(main_~i~0 > 0); 24900#L12 assume !(1 == main_~i~0); 24898#L12-2 assume !(10 == main_~i~0); 24896#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24894#L18-1 assume !!(main_~i~0 > 0); 24782#L12 assume !(1 == main_~i~0); 24891#L12-2 assume !(10 == main_~i~0); 24783#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24781#L18-1 assume !!(main_~i~0 > 0); 24780#L12 assume !(1 == main_~i~0); 24779#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 24756#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24757#L18-1 assume !!(main_~i~0 > 0); 24883#L12 assume !(1 == main_~i~0); 24882#L12-2 assume !(10 == main_~i~0); 24881#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24880#L18-1 assume !!(main_~i~0 > 0); 24878#L12 assume !(1 == main_~i~0); 24875#L12-2 assume !(10 == main_~i~0); 24873#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24871#L18-1 assume !!(main_~i~0 > 0); 24869#L12 assume !(1 == main_~i~0); 24867#L12-2 assume !(10 == main_~i~0); 24865#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24863#L18-1 assume !!(main_~i~0 > 0); 24861#L12 assume !(1 == main_~i~0); 24859#L12-2 assume !(10 == main_~i~0); 24857#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24855#L18-1 assume !!(main_~i~0 > 0); 24853#L12 assume !(1 == main_~i~0); 24851#L12-2 assume !(10 == main_~i~0); 24849#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24847#L18-1 assume !!(main_~i~0 > 0); 24845#L12 assume !(1 == main_~i~0); 24843#L12-2 assume !(10 == main_~i~0); 24841#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24839#L18-1 assume !!(main_~i~0 > 0); 24837#L12 assume !(1 == main_~i~0); 24835#L12-2 assume !(10 == main_~i~0); 24833#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24831#L18-1 assume !!(main_~i~0 > 0); 24829#L12 assume !(1 == main_~i~0); 24822#L12-2 assume !(10 == main_~i~0); 24826#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24824#L18-1 assume !!(main_~i~0 > 0); 24821#L12 assume 1 == main_~i~0;main_~up~0 := 1; 24816#L12-2 [2021-08-27 14:10:29,037 INFO L793 eck$LassoCheckResult]: Loop: 24816#L12-2 assume !(10 == main_~i~0); 24813#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24812#L18-1 assume !!(main_~i~0 > 0); 24811#L12 assume !(1 == main_~i~0); 24810#L12-2 assume !(10 == main_~i~0); 24809#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24808#L18-1 assume !!(main_~i~0 > 0); 24807#L12 assume !(1 == main_~i~0); 24806#L12-2 assume !(10 == main_~i~0); 24805#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24804#L18-1 assume !!(main_~i~0 > 0); 24803#L12 assume !(1 == main_~i~0); 24802#L12-2 assume !(10 == main_~i~0); 24801#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24800#L18-1 assume !!(main_~i~0 > 0); 24799#L12 assume !(1 == main_~i~0); 24798#L12-2 assume !(10 == main_~i~0); 24797#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24796#L18-1 assume !!(main_~i~0 > 0); 24795#L12 assume !(1 == main_~i~0); 24794#L12-2 assume !(10 == main_~i~0); 24793#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24792#L18-1 assume !!(main_~i~0 > 0); 24791#L12 assume !(1 == main_~i~0); 24790#L12-2 assume !(10 == main_~i~0); 24789#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24788#L18-1 assume !!(main_~i~0 > 0); 24787#L12 assume !(1 == main_~i~0); 24786#L12-2 assume !(10 == main_~i~0); 24785#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24784#L18-1 assume !!(main_~i~0 > 0); 24777#L12 assume !(1 == main_~i~0); 24776#L12-2 assume !(10 == main_~i~0); 24774#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 24770#L18-1 assume !!(main_~i~0 > 0); 24768#L12 assume !(1 == main_~i~0); 24769#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 24766#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24879#L18-1 assume !!(main_~i~0 > 0); 24876#L12 assume !(1 == main_~i~0); 24767#L12-2 assume !(10 == main_~i~0); 24763#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24764#L18-1 assume !!(main_~i~0 > 0); 24877#L12 assume !(1 == main_~i~0); 24874#L12-2 assume !(10 == main_~i~0); 24872#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24870#L18-1 assume !!(main_~i~0 > 0); 24868#L12 assume !(1 == main_~i~0); 24866#L12-2 assume !(10 == main_~i~0); 24864#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24862#L18-1 assume !!(main_~i~0 > 0); 24860#L12 assume !(1 == main_~i~0); 24858#L12-2 assume !(10 == main_~i~0); 24856#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24854#L18-1 assume !!(main_~i~0 > 0); 24852#L12 assume !(1 == main_~i~0); 24850#L12-2 assume !(10 == main_~i~0); 24848#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24846#L18-1 assume !!(main_~i~0 > 0); 24844#L12 assume !(1 == main_~i~0); 24842#L12-2 assume !(10 == main_~i~0); 24840#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24838#L18-1 assume !!(main_~i~0 > 0); 24836#L12 assume !(1 == main_~i~0); 24834#L12-2 assume !(10 == main_~i~0); 24832#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24830#L18-1 assume !!(main_~i~0 > 0); 24828#L12 assume !(1 == main_~i~0); 24820#L12-2 assume !(10 == main_~i~0); 24825#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 24823#L18-1 assume !!(main_~i~0 > 0); 24819#L12 assume 1 == main_~i~0;main_~up~0 := 1; 24816#L12-2 [2021-08-27 14:10:29,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:29,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1439876841, now seen corresponding path program 16 times [2021-08-27 14:10:29,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:29,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465556183] [2021-08-27 14:10:29,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:29,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:29,044 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:29,048 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:29,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:29,048 INFO L82 PathProgramCache]: Analyzing trace with hash -680570443, now seen corresponding path program 14 times [2021-08-27 14:10:29,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:29,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040504704] [2021-08-27 14:10:29,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:29,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:29,055 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:29,060 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:29,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:10:29,060 INFO L82 PathProgramCache]: Analyzing trace with hash -569285429, now seen corresponding path program 17 times [2021-08-27 14:10:29,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:10:29,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445491478] [2021-08-27 14:10:29,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:10:29,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:10:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:29,071 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:10:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:10:29,083 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:10:29,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 02:10:29 BoogieIcfgContainer [2021-08-27 14:10:29,699 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 14:10:29,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 14:10:29,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 14:10:29,700 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 14:10:29,700 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:10:09" (3/4) ... [2021-08-27 14:10:29,702 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 14:10:29,732 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 14:10:29,732 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 14:10:29,733 INFO L168 Benchmark]: Toolchain (without parser) took 20841.25 ms. Allocated memory was 58.7 MB in the beginning and 474.0 MB in the end (delta: 415.2 MB). Free memory was 38.5 MB in the beginning and 224.7 MB in the end (delta: -186.2 MB). Peak memory consumption was 229.7 MB. Max. memory is 16.1 GB. [2021-08-27 14:10:29,733 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 41.4 MB in the end (delta: 38.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:10:29,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 107.05 ms. Allocated memory is still 58.7 MB. Free memory was 38.4 MB in the beginning and 29.9 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 14:10:29,734 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.92 ms. Allocated memory is still 58.7 MB. Free memory was 29.9 MB in the beginning and 43.0 MB in the end (delta: -13.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 14:10:29,734 INFO L168 Benchmark]: Boogie Preprocessor took 9.92 ms. Allocated memory is still 58.7 MB. Free memory was 43.0 MB in the beginning and 42.2 MB in the end (delta: 865.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:10:29,734 INFO L168 Benchmark]: RCFGBuilder took 158.50 ms. Allocated memory is still 58.7 MB. Free memory was 42.2 MB in the beginning and 33.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 14:10:29,734 INFO L168 Benchmark]: BuchiAutomizer took 20493.32 ms. Allocated memory was 58.7 MB in the beginning and 474.0 MB in the end (delta: 415.2 MB). Free memory was 33.0 MB in the beginning and 228.9 MB in the end (delta: -195.9 MB). Peak memory consumption was 382.1 MB. Max. memory is 16.1 GB. [2021-08-27 14:10:29,735 INFO L168 Benchmark]: Witness Printer took 32.61 ms. Allocated memory is still 474.0 MB. Free memory was 228.9 MB in the beginning and 224.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 14:10:29,736 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 41.4 MB in the end (delta: 38.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 107.05 ms. Allocated memory is still 58.7 MB. Free memory was 38.4 MB in the beginning and 29.9 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.92 ms. Allocated memory is still 58.7 MB. Free memory was 29.9 MB in the beginning and 43.0 MB in the end (delta: -13.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 9.92 ms. Allocated memory is still 58.7 MB. Free memory was 43.0 MB in the beginning and 42.2 MB in the end (delta: 865.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 158.50 ms. Allocated memory is still 58.7 MB. Free memory was 42.2 MB in the beginning and 33.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 20493.32 ms. Allocated memory was 58.7 MB in the beginning and 474.0 MB in the end (delta: 415.2 MB). Free memory was 33.0 MB in the beginning and 228.9 MB in the end (delta: -195.9 MB). Peak memory consumption was 382.1 MB. Max. memory is 16.1 GB. * Witness Printer took 32.61 ms. Allocated memory is still 474.0 MB. Free memory was 228.9 MB in the beginning and 224.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 31 terminating modules (19 trivial, 11 deterministic, 1 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 21 and consists of 5 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function i and consists of 10 locations. One deterministic module has affine ranking function i and consists of 12 locations. One deterministic module has affine ranking function i and consists of 14 locations. One deterministic module has affine ranking function i and consists of 16 locations. One deterministic module has affine ranking function i and consists of 18 locations. One deterministic module has affine ranking function i and consists of 20 locations. One nondeterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. 19 modules have a trivial ranking function, the largest among these consists of 12 locations. The remainder module has 247 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 20.4s and 23 iterations. TraceHistogramMax:19. Analysis of lassos took 14.6s. Construction of modules took 0.9s. Büchi inclusion checks took 4.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 29. Automata minimization 113.0ms AutomataMinimizationTime, 31 MinimizatonAttempts, 3072 StatesRemovedByMinimization, 28 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 247 states and ocurred in iteration 22. Nontrivial modules had stage [11, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 816/2384 HoareTripleCheckerStatistics: 233 SDtfs, 641 SDslu, 6 SDs, 0 SdLazy, 1769 SolverSat, 211 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 942.9ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT2 conc0 concLT0 SILN0 SILU0 SILI8 SILT9 lasso1 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax177 hnf100 lsp36 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq196 hnf90 smp97 dnf114 smp98 tf110 neg98 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 114ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 26 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 12 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.3s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {up=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@77f3910b=0, \result=0, i=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 11]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 [L11] COND TRUE i > 0 [L12] COND TRUE i == 1 [L13] up = 1 [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND TRUE i == 10 [L16] up = 0 [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND TRUE i == 1 [L13] up = 1 Loop: [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND TRUE i == 10 [L16] up = 0 [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND TRUE i == 1 [L13] up = 1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 14:10:29,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:29,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2021-08-27 14:10:30,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2021-08-27 14:10:30,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:30,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:30,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:30,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2021-08-27 14:10:31,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:31,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-08-27 14:10:31,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:31,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-08-27 14:10:31,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-08-27 14:10:32,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-08-27 14:10:32,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:32,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-08-27 14:10:32,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:32,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:33,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-08-27 14:10:33,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-08-27 14:10:33,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-08-27 14:10:33,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-08-27 14:10:33,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-08-27 14:10:34,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...