./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-numeric/rec_counter3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b 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-numeric/rec_counter3.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 d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 22:59:53,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 22:59:53,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 22:59:53,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 22:59:53,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 22:59:53,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 22:59:53,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 22:59:53,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 22:59:53,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 22:59:53,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 22:59:53,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 22:59:53,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 22:59:53,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 22:59:53,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 22:59:53,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 22:59:53,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 22:59:53,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 22:59:53,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 22:59:53,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 22:59:53,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 22:59:53,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 22:59:53,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 22:59:53,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 22:59:53,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 22:59:53,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 22:59:53,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 22:59:53,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 22:59:53,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 22:59:53,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 22:59:53,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 22:59:53,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 22:59:53,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 22:59:53,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 22:59:53,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 22:59:53,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 22:59:53,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 22:59:53,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 22:59:53,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 22:59:53,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 22:59:53,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 22:59:53,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 22:59:53,521 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-14 22:59:53,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 22:59:53,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 22:59:53,552 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 22:59:53,552 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 22:59:53,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 22:59:53,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 22:59:53,553 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 22:59:53,554 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 22:59:53,554 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 22:59:53,554 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 22:59:53,555 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 22:59:53,555 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 22:59:53,555 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 22:59:53,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 22:59:53,556 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 22:59:53,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 22:59:53,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 22:59:53,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 22:59:53,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 22:59:53,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 22:59:53,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 22:59:53,557 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 22:59:53,557 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 22:59:53,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 22:59:53,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 22:59:53,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 22:59:53,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 22:59:53,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 22:59:53,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 22:59:53,559 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 22:59:53,559 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 [2021-12-14 22:59:53,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 22:59:53,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 22:59:53,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 22:59:53,785 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 22:59:53,787 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 22:59:53,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/rec_counter3.c [2021-12-14 22:59:53,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc5e30364/832ffbcbd8064cee8f9970791194e004/FLAG501897a17 [2021-12-14 22:59:54,207 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 22:59:54,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/rec_counter3.c [2021-12-14 22:59:54,212 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc5e30364/832ffbcbd8064cee8f9970791194e004/FLAG501897a17 [2021-12-14 22:59:54,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc5e30364/832ffbcbd8064cee8f9970791194e004 [2021-12-14 22:59:54,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 22:59:54,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 22:59:54,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 22:59:54,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 22:59:54,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 22:59:54,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:59:54" (1/1) ... [2021-12-14 22:59:54,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39883736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:54, skipping insertion in model container [2021-12-14 22:59:54,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:59:54" (1/1) ... [2021-12-14 22:59:54,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 22:59:54,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 22:59:54,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:59:54,790 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 22:59:54,799 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:59:54,807 INFO L208 MainTranslator]: Completed translation [2021-12-14 22:59:54,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:54 WrapperNode [2021-12-14 22:59:54,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 22:59:54,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 22:59:54,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 22:59:54,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 22:59:54,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:54" (1/1) ... [2021-12-14 22:59:54,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:54" (1/1) ... [2021-12-14 22:59:54,825 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2021-12-14 22:59:54,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 22:59:54,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 22:59:54,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 22:59:54,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 22:59:54,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:54" (1/1) ... [2021-12-14 22:59:54,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:54" (1/1) ... [2021-12-14 22:59:54,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:54" (1/1) ... [2021-12-14 22:59:54,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:54" (1/1) ... [2021-12-14 22:59:54,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:54" (1/1) ... [2021-12-14 22:59:54,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:54" (1/1) ... [2021-12-14 22:59:54,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:54" (1/1) ... [2021-12-14 22:59:54,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 22:59:54,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 22:59:54,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 22:59:54,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 22:59:54,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:54" (1/1) ... [2021-12-14 22:59:54,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:54,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:54,865 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) [2021-12-14 22:59:54,870 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 [2021-12-14 22:59:54,898 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2021-12-14 22:59:54,898 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2021-12-14 22:59:54,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 22:59:54,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 22:59:54,929 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 22:59:54,930 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 22:59:54,997 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 22:59:55,002 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 22:59:55,002 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 22:59:55,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:59:55 BoogieIcfgContainer [2021-12-14 22:59:55,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 22:59:55,004 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 22:59:55,004 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 22:59:55,006 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 22:59:55,007 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 22:59:55,007 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 10:59:54" (1/3) ... [2021-12-14 22:59:55,008 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@168be1e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 10:59:55, skipping insertion in model container [2021-12-14 22:59:55,008 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 22:59:55,008 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:54" (2/3) ... [2021-12-14 22:59:55,008 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@168be1e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 10:59:55, skipping insertion in model container [2021-12-14 22:59:55,008 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 22:59:55,008 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:59:55" (3/3) ... [2021-12-14 22:59:55,009 INFO L388 chiAutomizerObserver]: Analyzing ICFG rec_counter3.c [2021-12-14 22:59:55,045 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 22:59:55,045 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 22:59:55,045 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 22:59:55,045 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 22:59:55,046 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 22:59:55,046 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 22:59:55,046 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 22:59:55,046 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 22:59:55,057 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 22:59:55,073 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2021-12-14 22:59:55,073 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:59:55,073 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:59:55,079 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-14 22:59:55,079 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-14 22:59:55,079 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 22:59:55,080 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 22:59:55,082 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 5 [2021-12-14 22:59:55,082 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:59:55,082 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:59:55,082 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-14 22:59:55,082 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-14 22:59:55,088 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 9#L18true assume !(main_~i~0#1 <= 0); 17#L20true call main_#t~ret3#1 := rec(main_~i~0#1);< 12#recENTRYtrue [2021-12-14 22:59:55,088 INFO L793 eck$LassoCheckResult]: Loop: 12#recENTRYtrue ~a := #in~a; 6#L5true assume !(0 == ~a); 11#L8true call #t~ret0 := rec(~a - 1);< 12#recENTRYtrue [2021-12-14 22:59:55,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:55,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1572150, now seen corresponding path program 1 times [2021-12-14 22:59:55,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:59:55,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478680788] [2021-12-14 22:59:55,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:59:55,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:59:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:55,171 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:59:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:55,192 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:59:55,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:55,195 INFO L85 PathProgramCache]: Analyzing trace with hash 29960, now seen corresponding path program 1 times [2021-12-14 22:59:55,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:59:55,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969690578] [2021-12-14 22:59:55,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:59:55,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:59:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:55,200 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:59:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:55,207 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:59:55,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:55,210 INFO L85 PathProgramCache]: Analyzing trace with hash -408719437, now seen corresponding path program 1 times [2021-12-14 22:59:55,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:59:55,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588254868] [2021-12-14 22:59:55,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:59:55,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:59:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:55,227 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:59:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:55,237 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:59:55,324 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:59:55,325 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:59:55,325 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:59:55,325 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:59:55,325 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:59:55,325 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:55,326 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:59:55,326 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:59:55,326 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Loop [2021-12-14 22:59:55,326 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:59:55,326 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:59:55,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,466 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:59:55,467 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:59:55,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:55,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:55,470 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) [2021-12-14 22:59:55,480 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:55,480 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:55,484 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 [2021-12-14 22:59:55,502 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:55,502 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:55,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-12-14 22:59:55,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:55,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:55,520 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) [2021-12-14 22:59:55,521 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 [2021-12-14 22:59:55,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:55,527 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:55,548 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:55,549 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:55,571 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 [2021-12-14 22:59:55,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:55,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:55,573 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) [2021-12-14 22:59:55,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:55,580 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:55,590 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 [2021-12-14 22:59:55,596 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:55,596 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:55,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-14 22:59:55,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:55,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:55,615 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) [2021-12-14 22:59:55,619 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 [2021-12-14 22:59:55,620 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:55,620 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:55,643 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:55,644 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:55,672 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 [2021-12-14 22:59:55,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:55,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:55,674 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) [2021-12-14 22:59:55,679 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 [2021-12-14 22:59:55,680 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:55,680 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:55,688 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:55,688 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:55,707 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 [2021-12-14 22:59:55,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:55,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:55,708 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) [2021-12-14 22:59:55,709 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 [2021-12-14 22:59:55,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:55,711 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:55,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-14 22:59:55,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:55,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:55,753 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) [2021-12-14 22:59:55,755 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 [2021-12-14 22:59:55,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:59:55,756 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:55,789 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:55,789 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#in~a=-1} Honda state: {rec_#in~a=-1} Generalized eigenvectors: [{rec_#in~a=-1}, {rec_#in~a=0}, {rec_#in~a=0}] Lambdas: [1, 3, 15] Nus: [0, 1] [2021-12-14 22:59:55,807 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 [2021-12-14 22:59:55,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:55,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:55,808 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) [2021-12-14 22:59:55,809 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 [2021-12-14 22:59:55,810 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:55,810 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:55,823 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:55,824 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:55,839 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 [2021-12-14 22:59:55,867 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:59:55,867 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:59:55,868 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:59:55,868 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:59:55,868 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:59:55,868 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:55,868 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:59:55,868 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:59:55,868 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Lasso [2021-12-14 22:59:55,868 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:59:55,869 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:59:55,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,891 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:55,981 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:59:55,981 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:59:55,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:55,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:55,984 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) [2021-12-14 22:59:55,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:55,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:56,002 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 [2021-12-14 22:59:56,011 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:56,012 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~ret0=0} Honda state: {rec_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:56,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-14 22:59:56,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,038 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) [2021-12-14 22:59:56,053 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:56,053 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:56,063 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 [2021-12-14 22:59:56,064 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:56,064 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#t~post1=0} Honda state: {rec_#t~post1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:56,079 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 [2021-12-14 22:59:56,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,081 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) [2021-12-14 22:59:56,081 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 [2021-12-14 22:59:56,083 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:56,083 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:56,091 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:56,092 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0#1=0} Honda state: {ULTIMATE.start_main_~i~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:56,106 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 [2021-12-14 22:59:56,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,108 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) [2021-12-14 22:59:56,109 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 [2021-12-14 22:59:56,135 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:56,135 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:56,143 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:56,143 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:56,158 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 [2021-12-14 22:59:56,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,160 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) [2021-12-14 22:59:56,162 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 [2021-12-14 22:59:56,163 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:56,163 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:56,171 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:56,171 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_#res=0} Honda state: {rec_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:56,189 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 [2021-12-14 22:59:56,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,190 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) [2021-12-14 22:59:56,191 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 [2021-12-14 22:59:56,192 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:56,192 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:56,200 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:56,200 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~a=0} Honda state: {rec_~a=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:56,215 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 [2021-12-14 22:59:56,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,216 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) [2021-12-14 22:59:56,217 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 [2021-12-14 22:59:56,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:56,220 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:56,227 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:56,227 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_#t~ret4#1=0} Honda state: {ULTIMATE.start_#t~ret4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:56,243 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 [2021-12-14 22:59:56,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,244 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) [2021-12-14 22:59:56,246 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 [2021-12-14 22:59:56,247 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:56,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:56,255 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:56,255 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~rescopy~0=0} Honda state: {rec_~rescopy~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:56,270 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 [2021-12-14 22:59:56,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,272 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) [2021-12-14 22:59:56,273 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 [2021-12-14 22:59:56,274 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:56,274 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:56,281 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:56,281 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret3#1=0} Honda state: {ULTIMATE.start_main_#t~ret3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:56,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-12-14 22:59:56,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,298 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) [2021-12-14 22:59:56,299 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 [2021-12-14 22:59:56,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:56,300 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:56,308 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:56,308 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec_~res~0=0} Honda state: {rec_~res~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:56,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-14 22:59:56,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,325 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) [2021-12-14 22:59:56,329 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 [2021-12-14 22:59:56,330 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:56,330 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:56,337 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:56,337 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:56,351 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 [2021-12-14 22:59:56,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,353 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) [2021-12-14 22:59:56,354 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 [2021-12-14 22:59:56,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:56,354 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:56,362 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:56,363 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~1#1=0} Honda state: {ULTIMATE.start_main_~res~1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:56,377 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 [2021-12-14 22:59:56,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,379 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) [2021-12-14 22:59:56,379 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 [2021-12-14 22:59:56,381 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:56,381 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:56,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-12-14 22:59:56,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,407 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) [2021-12-14 22:59:56,407 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 [2021-12-14 22:59:56,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:59:56,409 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:56,442 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:59:56,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-12-14 22:59:56,445 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:59:56,445 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:59:56,445 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:59:56,445 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:59:56,445 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:59:56,445 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,445 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:59:56,446 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:59:56,446 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration1_Lasso [2021-12-14 22:59:56,446 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:59:56,446 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:59:56,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:56,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:56,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:56,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:56,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:56,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:56,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:56,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:56,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:56,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:56,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:56,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:56,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:56,542 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:59:56,545 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:59:56,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,547 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) [2021-12-14 22:59:56,561 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 [2021-12-14 22:59:56,562 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 [2021-12-14 22:59:56,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:59:56,570 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:59:56,571 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:59:56,571 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:59:56,571 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:59:56,572 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:59:56,572 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:59:56,588 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:59:56,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-12-14 22:59:56,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,609 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) [2021-12-14 22:59:56,610 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 [2021-12-14 22:59:56,612 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 [2021-12-14 22:59:56,618 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:59:56,618 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:59:56,618 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:59:56,618 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:59:56,618 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:59:56,619 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:59:56,619 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:59:56,623 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:59:56,640 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 [2021-12-14 22:59:56,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,641 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) [2021-12-14 22:59:56,641 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 [2021-12-14 22:59:56,642 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 [2021-12-14 22:59:56,648 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:59:56,648 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:59:56,648 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:59:56,648 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:59:56,648 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:59:56,649 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:59:56,649 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:59:56,651 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:59:56,666 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 [2021-12-14 22:59:56,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,667 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) [2021-12-14 22:59:56,668 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 [2021-12-14 22:59:56,669 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 [2021-12-14 22:59:56,675 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:59:56,675 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:59:56,676 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:59:56,676 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:59:56,676 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:59:56,676 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:59:56,676 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:59:56,699 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:59:56,722 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 [2021-12-14 22:59:56,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,723 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) [2021-12-14 22:59:56,725 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 [2021-12-14 22:59:56,725 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 [2021-12-14 22:59:56,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:59:56,731 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:59:56,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:59:56,731 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:59:56,731 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:59:56,732 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:59:56,732 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:59:56,733 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:59:56,747 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 [2021-12-14 22:59:56,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,748 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) [2021-12-14 22:59:56,749 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 [2021-12-14 22:59:56,750 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 [2021-12-14 22:59:56,756 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:59:56,756 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:59:56,756 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:59:56,756 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:59:56,756 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:59:56,757 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:59:56,757 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:59:56,763 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:59:56,778 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 [2021-12-14 22:59:56,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,779 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) [2021-12-14 22:59:56,780 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 [2021-12-14 22:59:56,781 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 [2021-12-14 22:59:56,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:59:56,787 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:59:56,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:59:56,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:59:56,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:59:56,788 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:59:56,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:59:56,799 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:59:56,814 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 [2021-12-14 22:59:56,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,815 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) [2021-12-14 22:59:56,815 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 [2021-12-14 22:59:56,817 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 [2021-12-14 22:59:56,822 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:59:56,823 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:59:56,823 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:59:56,823 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:59:56,823 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:59:56,823 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:59:56,823 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:59:56,824 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:59:56,839 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 [2021-12-14 22:59:56,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,840 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) [2021-12-14 22:59:56,840 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 [2021-12-14 22:59:56,842 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 [2021-12-14 22:59:56,847 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:59:56,847 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:59:56,847 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:59:56,847 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:59:56,847 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:59:56,848 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:59:56,848 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:59:56,858 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:59:56,872 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 [2021-12-14 22:59:56,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,873 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) [2021-12-14 22:59:56,874 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 [2021-12-14 22:59:56,875 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 [2021-12-14 22:59:56,880 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:59:56,880 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:59:56,881 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:59:56,881 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:59:56,881 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:59:56,883 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:59:56,883 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:59:56,887 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:59:56,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-12-14 22:59:56,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,902 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) [2021-12-14 22:59:56,903 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 [2021-12-14 22:59:56,904 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 [2021-12-14 22:59:56,909 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:59:56,909 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:59:56,909 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:59:56,910 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:59:56,910 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:59:56,911 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:59:56,911 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:59:56,919 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:59:56,935 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 [2021-12-14 22:59:56,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:56,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:56,936 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) [2021-12-14 22:59:56,938 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 [2021-12-14 22:59:56,939 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 [2021-12-14 22:59:56,944 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:59:56,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:59:56,944 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-14 22:59:56,944 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:59:56,957 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-12-14 22:59:56,957 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-12-14 22:59:56,987 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:59:57,009 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2021-12-14 22:59:57,009 INFO L444 ModelExtractionUtils]: 3 out of 11 variables were initially zero. Simplification set additionally 5 variables to zero. [2021-12-14 22:59:57,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:57,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:57,031 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) [2021-12-14 22:59:57,089 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 [2021-12-14 22:59:57,089 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:59:57,110 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2021-12-14 22:59:57,110 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:59:57,110 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_#in~a) = 1*rec_#in~a Supporting invariants [1*rec_#in~a >= 0] [2021-12-14 22:59:57,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-12-14 22:59:57,161 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-12-14 22:59:57,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:57,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 22:59:57,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:59:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:57,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-14 22:59:57,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:59:57,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:59:57,312 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2021-12-14 22:59:57,312 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:59:57,402 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2). Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 43 transitions. Complement of second has 13 states. [2021-12-14 22:59:57,403 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 [2021-12-14 22:59:57,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:59:57,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2021-12-14 22:59:57,409 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2021-12-14 22:59:57,409 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:59:57,409 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-14 22:59:57,409 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:59:57,409 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2021-12-14 22:59:57,410 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:59:57,410 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 43 transitions. [2021-12-14 22:59:57,413 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2021-12-14 22:59:57,417 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 23 states and 30 transitions. [2021-12-14 22:59:57,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-12-14 22:59:57,418 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-12-14 22:59:57,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2021-12-14 22:59:57,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:59:57,418 INFO L681 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2021-12-14 22:59:57,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2021-12-14 22:59:57,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2021-12-14 22:59:57,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 22:59:57,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2021-12-14 22:59:57,440 INFO L704 BuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2021-12-14 22:59:57,440 INFO L587 BuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2021-12-14 22:59:57,440 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 22:59:57,440 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 26 transitions. [2021-12-14 22:59:57,441 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2021-12-14 22:59:57,441 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:59:57,441 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:59:57,442 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:59:57,442 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-14 22:59:57,442 INFO L791 eck$LassoCheckResult]: Stem: 120#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 121#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 129#L18 assume !(main_~i~0#1 <= 0); 123#L20 call main_#t~ret3#1 := rec(main_~i~0#1);< 132#recENTRY ~a := #in~a; 122#L5 assume 0 == ~a;#res := 0; 124#recFINAL assume true; 138#recEXIT >#48#return; 134#L20-1 main_~res~1#1 := main_#t~ret3#1;havoc main_#t~ret3#1; 135#L21-2 [2021-12-14 22:59:57,442 INFO L793 eck$LassoCheckResult]: Loop: 135#L21-2 assume !!(main_~res~1#1 < 1); 135#L21-2 [2021-12-14 22:59:57,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:57,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1937407319, now seen corresponding path program 1 times [2021-12-14 22:59:57,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:59:57,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996296729] [2021-12-14 22:59:57,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:59:57,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:59:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:57,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 22:59:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:59:57,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 22:59:57,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996296729] [2021-12-14 22:59:57,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996296729] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:59:57,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:59:57,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 22:59:57,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815480805] [2021-12-14 22:59:57,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:59:57,496 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 22:59:57,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:57,497 INFO L85 PathProgramCache]: Analyzing trace with hash 70, now seen corresponding path program 1 times [2021-12-14 22:59:57,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:59:57,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166593465] [2021-12-14 22:59:57,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:59:57,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:59:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:57,499 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:59:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:57,501 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:59:57,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 22:59:57,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 22:59:57,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 22:59:57,509 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. cyclomatic complexity: 8 Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 22:59:57,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:59:57,542 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-12-14 22:59:57,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 22:59:57,543 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 24 transitions. [2021-12-14 22:59:57,546 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2021-12-14 22:59:57,547 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 18 states and 21 transitions. [2021-12-14 22:59:57,547 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-12-14 22:59:57,547 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-12-14 22:59:57,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 21 transitions. [2021-12-14 22:59:57,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:59:57,547 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-12-14 22:59:57,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 21 transitions. [2021-12-14 22:59:57,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-14 22:59:57,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 22:59:57,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-12-14 22:59:57,552 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-12-14 22:59:57,552 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-12-14 22:59:57,552 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-14 22:59:57,552 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2021-12-14 22:59:57,554 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2021-12-14 22:59:57,554 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:59:57,554 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:59:57,556 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:59:57,583 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-14 22:59:57,583 INFO L791 eck$LassoCheckResult]: Stem: 176#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 177#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 185#L18 assume !(main_~i~0#1 <= 0); 182#L20 call main_#t~ret3#1 := rec(main_~i~0#1);< 188#recENTRY ~a := #in~a; 181#L5 assume !(0 == ~a); 179#L8 call #t~ret0 := rec(~a - 1);< 187#recENTRY ~a := #in~a; 178#L5 assume 0 == ~a;#res := 0; 180#recFINAL assume true; 191#recEXIT >#46#return; 186#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 183#L10-2 [2021-12-14 22:59:57,584 INFO L793 eck$LassoCheckResult]: Loop: 183#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 183#L10-2 [2021-12-14 22:59:57,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:57,585 INFO L85 PathProgramCache]: Analyzing trace with hash 27203062, now seen corresponding path program 1 times [2021-12-14 22:59:57,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:59:57,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579930873] [2021-12-14 22:59:57,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:59:57,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:59:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:57,602 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:59:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:57,607 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:59:57,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:57,608 INFO L85 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2021-12-14 22:59:57,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:59:57,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987931543] [2021-12-14 22:59:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:59:57,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:59:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:57,610 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:59:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:57,615 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:59:57,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:57,615 INFO L85 PathProgramCache]: Analyzing trace with hash 843294937, now seen corresponding path program 1 times [2021-12-14 22:59:57,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:59:57,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349232798] [2021-12-14 22:59:57,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:59:57,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:59:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:57,635 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 [2021-12-14 22:59:57,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 22:59:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:57,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 22:59:57,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 22:59:57,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349232798] [2021-12-14 22:59:57,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349232798] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:59:57,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 22:59:57,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 22:59:57,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031707625] [2021-12-14 22:59:57,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:59:57,664 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:59:57,664 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:59:57,664 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:59:57,664 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:59:57,664 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:59:57,664 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:57,664 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:59:57,664 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:59:57,664 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration3_Loop [2021-12-14 22:59:57,664 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:59:57,664 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:59:57,665 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:57,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:57,682 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:59:57,682 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:59:57,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:57,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:57,683 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) [2021-12-14 22:59:57,684 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 [2021-12-14 22:59:57,685 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:57,685 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:57,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-12-14 22:59:57,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:57,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:57,727 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) [2021-12-14 22:59:57,727 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 [2021-12-14 22:59:57,728 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:59:57,728 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:57,757 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:59:57,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-12-14 22:59:57,759 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:59:57,760 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:59:57,760 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:59:57,760 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:59:57,760 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:59:57,760 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:57,760 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:59:57,760 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:59:57,760 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration3_Loop [2021-12-14 22:59:57,760 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:59:57,760 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:59:57,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:57,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:57,788 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:59:57,789 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:59:57,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:57,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:57,790 INFO L229 MonitoredProcess]: Starting monitored process 39 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) [2021-12-14 22:59:57,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-12-14 22:59:57,792 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 [2021-12-14 22:59:57,799 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:59:57,799 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:59:57,799 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:59:57,799 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:59:57,800 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:59:57,800 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:59:57,800 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:59:57,823 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:59:57,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-12-14 22:59:57,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:57,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:57,848 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) [2021-12-14 22:59:57,855 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 [2021-12-14 22:59:57,862 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:59:57,862 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:59:57,862 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:59:57,862 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:59:57,862 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:59:57,863 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:59:57,863 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:59:57,866 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 [2021-12-14 22:59:57,883 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:59:57,885 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-14 22:59:57,885 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 22:59:57,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:57,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:57,887 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) [2021-12-14 22:59:57,889 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:59:57,889 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:59:57,889 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:59:57,889 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2021-12-14 22:59:57,907 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 [2021-12-14 22:59:57,910 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 [2021-12-14 22:59:57,911 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:59:57,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:57,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 22:59:57,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:59:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:58,043 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:59:58,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:59:58,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:59:58,044 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2021-12-14 22:59:58,044 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 22:59:58,088 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 6. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 38 states and 50 transitions. Complement of second has 10 states. [2021-12-14 22:59:58,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-14 22:59:58,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 22:59:58,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-12-14 22:59:58,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 1 letters. [2021-12-14 22:59:58,092 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:59:58,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 1 letters. [2021-12-14 22:59:58,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:59:58,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 2 letters. [2021-12-14 22:59:58,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:59:58,093 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 50 transitions. [2021-12-14 22:59:58,095 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2021-12-14 22:59:58,098 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 32 states and 42 transitions. [2021-12-14 22:59:58,098 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-12-14 22:59:58,098 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-12-14 22:59:58,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 42 transitions. [2021-12-14 22:59:58,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:59:58,098 INFO L681 BuchiCegarLoop]: Abstraction has 32 states and 42 transitions. [2021-12-14 22:59:58,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 42 transitions. [2021-12-14 22:59:58,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-14 22:59:58,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-14 22:59:58,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2021-12-14 22:59:58,105 INFO L704 BuchiCegarLoop]: Abstraction has 32 states and 42 transitions. [2021-12-14 22:59:58,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 22:59:58,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 22:59:58,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 22:59:58,107 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 22:59:58,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:59:58,121 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2021-12-14 22:59:58,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 22:59:58,122 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 36 transitions. [2021-12-14 22:59:58,124 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2021-12-14 22:59:58,125 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 30 states and 36 transitions. [2021-12-14 22:59:58,125 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-12-14 22:59:58,126 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-12-14 22:59:58,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 36 transitions. [2021-12-14 22:59:58,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:59:58,126 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-12-14 22:59:58,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 36 transitions. [2021-12-14 22:59:58,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-12-14 22:59:58,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-14 22:59:58,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-12-14 22:59:58,132 INFO L704 BuchiCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-12-14 22:59:58,132 INFO L587 BuchiCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-12-14 22:59:58,133 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-14 22:59:58,133 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 36 transitions. [2021-12-14 22:59:58,134 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2021-12-14 22:59:58,134 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:59:58,135 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:59:58,135 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:59:58,135 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-14 22:59:58,136 INFO L791 eck$LassoCheckResult]: Stem: 368#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 369#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 378#L18 assume !(main_~i~0#1 <= 0); 375#L20 call main_#t~ret3#1 := rec(main_~i~0#1);< 382#recENTRY ~a := #in~a; 374#L5 assume !(0 == ~a); 371#L8 call #t~ret0 := rec(~a - 1);< 381#recENTRY ~a := #in~a; 370#L5 assume 0 == ~a;#res := 0; 373#recFINAL assume true; 389#recEXIT >#46#return; 396#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 376#L10-2 assume !(~rescopy~0 > 0); 377#L10-3 #res := 1 + ~res~0; 397#recFINAL assume true; 390#recEXIT >#48#return; 384#L20-1 main_~res~1#1 := main_#t~ret3#1;havoc main_#t~ret3#1; 385#L21-2 [2021-12-14 22:59:58,136 INFO L793 eck$LassoCheckResult]: Loop: 385#L21-2 assume !!(main_~res~1#1 < 1); 385#L21-2 [2021-12-14 22:59:58,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:58,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1542563482, now seen corresponding path program 1 times [2021-12-14 22:59:58,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:59:58,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465923014] [2021-12-14 22:59:58,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:59:58,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:59:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:58,163 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:59:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:58,173 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:59:58,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:58,174 INFO L85 PathProgramCache]: Analyzing trace with hash 70, now seen corresponding path program 2 times [2021-12-14 22:59:58,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:59:58,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477454462] [2021-12-14 22:59:58,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:59:58,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:59:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:58,178 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:59:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:58,180 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:59:58,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:58,180 INFO L85 PathProgramCache]: Analyzing trace with hash -574827647, now seen corresponding path program 1 times [2021-12-14 22:59:58,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:59:58,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207132976] [2021-12-14 22:59:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:59:58,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:59:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:58,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 22:59:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:58,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 22:59:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 22:59:58,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 22:59:58,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207132976] [2021-12-14 22:59:58,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207132976] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 22:59:58,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664922316] [2021-12-14 22:59:58,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:59:58,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 22:59:58,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:58,293 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 22:59:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:58,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-12-14 22:59:58,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 22:59:58,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:59:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 22:59:58,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 22:59:58,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664922316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 22:59:58,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 22:59:58,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 10 [2021-12-14 22:59:58,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579873959] [2021-12-14 22:59:58,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 22:59:58,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 22:59:58,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 22:59:58,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-14 22:59:58,397 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. cyclomatic complexity: 9 Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 22:59:58,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 22:59:58,420 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-12-14 22:59:58,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 22:59:58,421 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 35 transitions. [2021-12-14 22:59:58,422 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-14 22:59:58,423 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 23 states and 27 transitions. [2021-12-14 22:59:58,423 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-12-14 22:59:58,423 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-12-14 22:59:58,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 27 transitions. [2021-12-14 22:59:58,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:59:58,423 INFO L681 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-12-14 22:59:58,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 27 transitions. [2021-12-14 22:59:58,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-12-14 22:59:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 22:59:58,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-12-14 22:59:58,425 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-12-14 22:59:58,425 INFO L587 BuchiCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-12-14 22:59:58,425 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-14 22:59:58,425 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 23 transitions. [2021-12-14 22:59:58,426 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-14 22:59:58,426 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:59:58,426 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:59:58,426 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:59:58,426 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-14 22:59:58,426 INFO L791 eck$LassoCheckResult]: Stem: 515#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 516#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~i~0#1, main_~res~1#1;main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 513#L18 assume !(main_~i~0#1 <= 0); 514#L20 call main_#t~ret3#1 := rec(main_~i~0#1);< 522#recENTRY ~a := #in~a; 523#L5 assume !(0 == ~a); 519#L8 call #t~ret0 := rec(~a - 1);< 521#recENTRY ~a := #in~a; 525#L5 assume !(0 == ~a); 518#L8 call #t~ret0 := rec(~a - 1);< 521#recENTRY ~a := #in~a; 524#L5 assume 0 == ~a;#res := 0; 526#recFINAL assume true; 532#recEXIT >#46#return; 531#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 527#L10-2 assume !(~rescopy~0 > 0); 528#L10-3 #res := 1 + ~res~0; 530#recFINAL assume true; 529#recEXIT >#46#return; 517#L8-1 ~res~0 := #t~ret0;havoc #t~ret0;~rescopy~0 := ~res~0; 520#L10-2 [2021-12-14 22:59:58,426 INFO L793 eck$LassoCheckResult]: Loop: 520#L10-2 assume !!(~rescopy~0 > 0);#t~post1 := ~rescopy~0;~rescopy~0 := #t~post1 - 1;havoc #t~post1; 520#L10-2 [2021-12-14 22:59:58,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:58,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1552442957, now seen corresponding path program 1 times [2021-12-14 22:59:58,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:59:58,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784455107] [2021-12-14 22:59:58,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:59:58,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:59:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:58,433 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:59:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:58,439 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:59:58,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:58,439 INFO L85 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2021-12-14 22:59:58,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:59:58,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806109412] [2021-12-14 22:59:58,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:59:58,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:59:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:58,442 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:59:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:58,443 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:59:58,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:58,443 INFO L85 PathProgramCache]: Analyzing trace with hash -881091396, now seen corresponding path program 1 times [2021-12-14 22:59:58,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:59:58,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932920517] [2021-12-14 22:59:58,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:59:58,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:59:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:58,449 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:59:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:58,455 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:59:58,464 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:59:58,464 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:59:58,464 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:59:58,464 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:59:58,464 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:59:58,464 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:58,464 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:59:58,464 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:59:58,464 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration5_Loop [2021-12-14 22:59:58,465 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:59:58,465 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:59:58,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:58,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:58,480 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:59:58,480 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:59:58,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:58,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:58,516 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) [2021-12-14 22:59:58,517 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 [2021-12-14 22:59:58,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:58,518 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:58,568 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 [2021-12-14 22:59:58,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:58,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:58,569 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) [2021-12-14 22:59:58,570 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 [2021-12-14 22:59:58,572 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:59:58,572 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:58,612 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:59:58,615 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 [2021-12-14 22:59:58,615 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:59:58,615 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:59:58,615 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:59:58,615 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:59:58,616 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:59:58,616 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:58,616 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:59:58,616 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:59:58,616 INFO L133 ssoRankerPreferences]: Filename of dumped script: rec_counter3.c_Iteration5_Loop [2021-12-14 22:59:58,616 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:59:58,616 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:59:58,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:58,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:59:58,641 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:59:58,641 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:59:58,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:58,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:58,643 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) [2021-12-14 22:59:58,663 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 [2021-12-14 22:59:58,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-12-14 22:59:58,664 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 [2021-12-14 22:59:58,669 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:59:58,669 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:59:58,670 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:59:58,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:59:58,670 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:59:58,671 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:59:58,671 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:59:58,673 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:59:58,675 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-14 22:59:58,675 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 22:59:58,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:58,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:58,676 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) [2021-12-14 22:59:58,677 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 [2021-12-14 22:59:58,678 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:59:58,678 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:59:58,678 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:59:58,678 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec_~rescopy~0) = 1*rec_~rescopy~0 Supporting invariants [] [2021-12-14 22:59:58,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-12-14 22:59:58,694 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:59:58,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:58,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 22:59:58,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:59:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:58,949 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:59:58,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:59:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:59:58,950 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2021-12-14 22:59:58,950 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 22:59:58,972 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Result 26 states and 30 transitions. Complement of second has 7 states. [2021-12-14 22:59:58,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-14 22:59:58,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 22:59:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-12-14 22:59:58,974 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 20 letters. Loop has 1 letters. [2021-12-14 22:59:58,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:59:58,974 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 22:59:58,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:59,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 22:59:59,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:59:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:59,158 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:59:59,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:59:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:59:59,159 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2021-12-14 22:59:59,159 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 22:59:59,182 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Result 26 states and 30 transitions. Complement of second has 7 states. [2021-12-14 22:59:59,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-14 22:59:59,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 22:59:59,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-12-14 22:59:59,183 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 20 letters. Loop has 1 letters. [2021-12-14 22:59:59,183 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:59:59,183 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 22:59:59,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:59,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 22:59:59,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:59:59,331 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 [2021-12-14 22:59:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:59,392 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:59:59,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:59:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:59:59,393 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2021-12-14 22:59:59,393 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 22:59:59,418 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 23 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Result 33 states and 41 transitions. Complement of second has 9 states. [2021-12-14 22:59:59,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-14 22:59:59,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 22:59:59,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-12-14 22:59:59,420 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 20 letters. Loop has 1 letters. [2021-12-14 22:59:59,420 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:59:59,420 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 21 letters. Loop has 1 letters. [2021-12-14 22:59:59,420 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:59:59,420 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 20 letters. Loop has 2 letters. [2021-12-14 22:59:59,420 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:59:59,421 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 41 transitions. [2021-12-14 22:59:59,421 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 22:59:59,421 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 0 states and 0 transitions. [2021-12-14 22:59:59,421 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-14 22:59:59,422 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-14 22:59:59,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-14 22:59:59,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 22:59:59,422 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 22:59:59,422 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 22:59:59,422 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 22:59:59,422 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-14 22:59:59,422 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-14 22:59:59,422 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 22:59:59,422 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-14 22:59:59,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 10:59:59 BoogieIcfgContainer [2021-12-14 22:59:59,428 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 22:59:59,428 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 22:59:59,428 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 22:59:59,428 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 22:59:59,429 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:59:55" (3/4) ... [2021-12-14 22:59:59,431 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 22:59:59,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 22:59:59,431 INFO L158 Benchmark]: Toolchain (without parser) took 4788.48ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 65.0MB in the beginning and 78.4MB in the end (delta: -13.4MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2021-12-14 22:59:59,432 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 96.5MB. Free memory was 52.6MB in the beginning and 52.5MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:59:59,432 INFO L158 Benchmark]: CACSL2BoogieTranslator took 163.51ms. Allocated memory is still 96.5MB. Free memory was 64.8MB in the beginning and 75.1MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 22:59:59,432 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.35ms. Allocated memory is still 96.5MB. Free memory was 75.1MB in the beginning and 73.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:59:59,432 INFO L158 Benchmark]: Boogie Preprocessor took 11.07ms. Allocated memory is still 96.5MB. Free memory was 73.5MB in the beginning and 72.9MB in the end (delta: 638.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:59:59,432 INFO L158 Benchmark]: RCFGBuilder took 166.36ms. Allocated memory is still 96.5MB. Free memory was 72.9MB in the beginning and 64.1MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 22:59:59,433 INFO L158 Benchmark]: BuchiAutomizer took 4423.47ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 64.1MB in the beginning and 78.4MB in the end (delta: -14.3MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-12-14 22:59:59,433 INFO L158 Benchmark]: Witness Printer took 2.76ms. Allocated memory is still 117.4MB. Free memory is still 78.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:59:59,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 96.5MB. Free memory was 52.6MB in the beginning and 52.5MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 163.51ms. Allocated memory is still 96.5MB. Free memory was 64.8MB in the beginning and 75.1MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.35ms. Allocated memory is still 96.5MB. Free memory was 75.1MB in the beginning and 73.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.07ms. Allocated memory is still 96.5MB. Free memory was 73.5MB in the beginning and 72.9MB in the end (delta: 638.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 166.36ms. Allocated memory is still 96.5MB. Free memory was 72.9MB in the beginning and 64.1MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 4423.47ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 64.1MB in the beginning and 78.4MB in the end (delta: -14.3MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Witness Printer took 2.76ms. Allocated memory is still 117.4MB. Free memory is still 78.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(a) and consists of 5 locations. One deterministic module has affine ranking function rescopy and consists of 4 locations. One nondeterministic module has affine ranking function rescopy and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 3.0s. Construction of modules took 0.0s. Büchi inclusion checks took 1.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 30 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 104 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 97 mSDsluCounter, 265 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 155 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 84 IncrementalHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 110 mSDtfsCounter, 84 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc1 concLT1 SILN1 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq169 hnf94 smp100 dnf124 smp100 tf108 neg97 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 174ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 18 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-14 22:59:59,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-12-14 22:59:59,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE