./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.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 ef49038d2ab74dd97b86bf2af92359124ff338d3 ........................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 13:56:43,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 13:56:43,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 13:56:43,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 13:56:43,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 13:56:43,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 13:56:43,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 13:56:43,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 13:56:43,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 13:56:43,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 13:56:43,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 13:56:43,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 13:56:43,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 13:56:43,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 13:56:43,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 13:56:43,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 13:56:43,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 13:56:43,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 13:56:43,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 13:56:43,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 13:56:43,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 13:56:43,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 13:56:43,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 13:56:43,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 13:56:43,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 13:56:43,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 13:56:43,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 13:56:43,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 13:56:43,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 13:56:43,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 13:56:43,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 13:56:43,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 13:56:43,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 13:56:43,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 13:56:43,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 13:56:43,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 13:56:43,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 13:56:43,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 13:56:43,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 13:56:43,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 13:56:43,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 13:56:43,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-27 13:56:43,836 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 13:56:43,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 13:56:43,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 13:56:43,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 13:56:43,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 13:56:43,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 13:56:43,838 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 13:56:43,839 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 13:56:43,839 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 13:56:43,839 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 13:56:43,839 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 13:56:43,839 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 13:56:43,840 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 13:56:43,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 13:56:43,840 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 13:56:43,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 13:56:43,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 13:56:43,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 13:56:43,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 13:56:43,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 13:56:43,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 13:56:43,842 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 13:56:43,842 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 13:56:43,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 13:56:43,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 13:56:43,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 13:56:43,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 13:56:43,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 13:56:43,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 13:56:43,844 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 13:56:43,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef49038d2ab74dd97b86bf2af92359124ff338d3 [2021-08-27 13:56:44,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 13:56:44,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 13:56:44,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 13:56:44,162 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 13:56:44,164 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 13:56:44,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.c [2021-08-27 13:56:44,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/812ec20f9/47d524cd80a642508a8c0ed98cfcd3f0/FLAGf4c9453c4 [2021-08-27 13:56:44,596 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 13:56:44,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.20.c [2021-08-27 13:56:44,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/812ec20f9/47d524cd80a642508a8c0ed98cfcd3f0/FLAGf4c9453c4 [2021-08-27 13:56:44,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/812ec20f9/47d524cd80a642508a8c0ed98cfcd3f0 [2021-08-27 13:56:44,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 13:56:44,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 13:56:44,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 13:56:44,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 13:56:44,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 13:56:44,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:56:44" (1/1) ... [2021-08-27 13:56:44,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc86e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:44, skipping insertion in model container [2021-08-27 13:56:44,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:56:44" (1/1) ... [2021-08-27 13:56:44,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 13:56:44,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 13:56:44,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 13:56:44,744 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 13:56:44,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 13:56:44,766 INFO L208 MainTranslator]: Completed translation [2021-08-27 13:56:44,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:44 WrapperNode [2021-08-27 13:56:44,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 13:56:44,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 13:56:44,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 13:56:44,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 13:56:44,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:44" (1/1) ... [2021-08-27 13:56:44,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:44" (1/1) ... [2021-08-27 13:56:44,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 13:56:44,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 13:56:44,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 13:56:44,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 13:56:44,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:44" (1/1) ... [2021-08-27 13:56:44,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:44" (1/1) ... [2021-08-27 13:56:44,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:44" (1/1) ... [2021-08-27 13:56:44,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:44" (1/1) ... [2021-08-27 13:56:44,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:44" (1/1) ... [2021-08-27 13:56:44,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:44" (1/1) ... [2021-08-27 13:56:44,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:44" (1/1) ... [2021-08-27 13:56:44,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 13:56:44,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 13:56:44,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 13:56:44,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 13:56:44,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:44" (1/1) ... [2021-08-27 13:56:44,840 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:44,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:44,862 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:44,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 13:56:44,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 13:56:44,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 13:56:45,046 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 13:56:45,046 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 13:56:45,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:56:45 BoogieIcfgContainer [2021-08-27 13:56:45,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 13:56:45,051 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 13:56:45,051 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 13:56:45,053 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 13:56:45,055 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 13:56:45,055 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 01:56:44" (1/3) ... [2021-08-27 13:56:45,056 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@424fe98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 01:56:45, skipping insertion in model container [2021-08-27 13:56:45,056 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 13:56:45,056 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:56:44" (2/3) ... [2021-08-27 13:56:45,059 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@424fe98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 01:56:45, skipping insertion in model container [2021-08-27 13:56:45,059 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 13:56:45,059 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:56:45" (3/3) ... [2021-08-27 13:56:45,061 INFO L389 chiAutomizerObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.20.c [2021-08-27 13:56:45,109 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 13:56:45,110 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 13:56:45,110 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 13:56:45,111 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 13:56:45,111 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 13:56:45,111 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 13:56:45,111 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 13:56:45,111 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 13:56:45,123 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:45,138 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-27 13:56:45,138 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:56:45,138 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:56:45,143 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 13:56:45,143 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-08-27 13:56:45,143 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 13:56:45,143 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:45,144 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-27 13:56:45,144 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 13:56:45,144 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 13:56:45,145 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 13:56:45,145 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-08-27 13:56:45,150 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L26-2true [2021-08-27 13:56:45,150 INFO L793 eck$LassoCheckResult]: Loop: 6#L26-2true assume !!((main_~x~0 > main_~y~0 && main_~y~0 >= 1) && main_~y~0 <= 2);main_~x~0 := main_~x~0 - main_~y~0;main_~y~0 := main_#t~nondet2;havoc main_#t~nondet2; 6#L26-2true [2021-08-27 13:56:45,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:45,156 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-08-27 13:56:45,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:45,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235106569] [2021-08-27 13:56:45,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:45,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:45,240 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:45,264 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:45,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:45,268 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2021-08-27 13:56:45,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:45,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850970785] [2021-08-27 13:56:45,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:45,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:45,288 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:45,299 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:45,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:45,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-08-27 13:56:45,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 13:56:45,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923111200] [2021-08-27 13:56:45,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 13:56:45,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 13:56:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:45,318 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 13:56:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 13:56:45,330 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 13:56:45,417 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:45,418 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:45,418 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:45,418 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:45,418 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 13:56:45,418 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:45,418 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:45,419 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:45,419 INFO L133 ssoRankerPreferences]: Filename of dumped script: ChenFlurMukhopadhyay-SAS2012-Ex2.20.c_Iteration1_Loop [2021-08-27 13:56:45,419 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:45,419 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:45,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:45,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:45,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:45,580 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:45,580 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 13:56:45,582 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:45,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:45,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:45,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-27 13:56:45,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 13:56:45,586 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:45,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:45,659 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:45,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:45,665 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:45,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-27 13:56:45,668 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 13:56:45,668 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 13:56:45,718 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 13:56:45,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:45,728 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 13:56:45,728 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 13:56:45,728 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 13:56:45,728 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 13:56:45,728 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 13:56:45,728 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:45,729 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 13:56:45,729 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 13:56:45,729 INFO L133 ssoRankerPreferences]: Filename of dumped script: ChenFlurMukhopadhyay-SAS2012-Ex2.20.c_Iteration1_Loop [2021-08-27 13:56:45,729 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 13:56:45,729 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 13:56:45,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:45,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:45,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 13:56:45,825 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 13:56:45,829 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 13:56:45,830 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:45,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:45,833 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:45,842 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 [2021-08-27 13:56:45,850 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 13:56:45,850 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 13:56:45,851 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 13:56:45,851 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 13:56:45,851 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 13:56:45,856 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 13:56:45,858 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 13:56:45,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-27 13:56:45,876 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 13:56:45,884 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 13:56:45,884 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 13:56:45,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 13:56:45,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 13:56:45,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 13:56:45,889 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 13:56:45,889 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 13:56:45,889 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 13:56:45,890 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-08-27 13:56:45,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-27 13:56:45,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:45,914 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 13:56:45,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 13:56:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:45,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 13:56:45,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 13:56:45,955 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 13:56:45,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 13:56:45,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 13:56:45,967 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-27 13:56:45,969 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:45,999 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 15 states and 18 transitions. Complement of second has 5 states. [2021-08-27 13:56:45,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 13:56:46,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 13:56:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-08-27 13:56:46,002 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 1 letters. [2021-08-27 13:56:46,002 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:46,002 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 1 letters. [2021-08-27 13:56:46,003 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:46,003 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2021-08-27 13:56:46,003 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 13:56:46,003 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2021-08-27 13:56:46,005 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 13:56:46,007 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2021-08-27 13:56:46,008 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 13:56:46,008 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 13:56:46,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 13:56:46,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 13:56:46,008 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 13:56:46,009 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 13:56:46,009 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 13:56:46,009 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 13:56:46,009 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 13:56:46,009 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 13:56:46,009 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 13:56:46,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 01:56:46 BoogieIcfgContainer [2021-08-27 13:56:46,013 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 13:56:46,014 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 13:56:46,014 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 13:56:46,014 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 13:56:46,014 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:56:45" (3/4) ... [2021-08-27 13:56:46,016 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 13:56:46,017 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 13:56:46,018 INFO L168 Benchmark]: Toolchain (without parser) took 1402.45 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 40.1 MB in the beginning and 33.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. [2021-08-27 13:56:46,019 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 60.8 MB. Free memory was 43.1 MB in the beginning and 43.1 MB in the end (delta: 43.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:56:46,019 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.44 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 31.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 13:56:46,020 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.54 ms. Allocated memory is still 60.8 MB. Free memory was 31.4 MB in the beginning and 45.0 MB in the end (delta: -13.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 13:56:46,020 INFO L168 Benchmark]: Boogie Preprocessor took 12.67 ms. Allocated memory is still 60.8 MB. Free memory was 45.0 MB in the beginning and 44.2 MB in the end (delta: 802.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:56:46,021 INFO L168 Benchmark]: RCFGBuilder took 220.56 ms. Allocated memory is still 60.8 MB. Free memory was 44.1 MB in the beginning and 35.8 MB in the end (delta: 8.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 13:56:46,021 INFO L168 Benchmark]: BuchiAutomizer took 962.74 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 35.7 MB in the beginning and 33.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. [2021-08-27 13:56:46,022 INFO L168 Benchmark]: Witness Printer took 2.88 ms. Allocated memory is still 81.8 MB. Free memory was 33.8 MB in the beginning and 33.6 MB in the end (delta: 225.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 13:56:46,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 60.8 MB. Free memory was 43.1 MB in the beginning and 43.1 MB in the end (delta: 43.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 150.44 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 31.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.54 ms. Allocated memory is still 60.8 MB. Free memory was 31.4 MB in the beginning and 45.0 MB in the end (delta: -13.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 12.67 ms. Allocated memory is still 60.8 MB. Free memory was 45.0 MB in the beginning and 44.2 MB in the end (delta: 802.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 220.56 ms. Allocated memory is still 60.8 MB. Free memory was 44.1 MB in the beginning and 35.8 MB in the end (delta: 8.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 962.74 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 35.7 MB in the beginning and 33.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. * Witness Printer took 2.88 ms. Allocated memory is still 81.8 MB. Free memory was 33.8 MB in the beginning and 33.6 MB in the end (delta: 225.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 4 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf100 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf93 smp100 dnf100 smp100 tf107 neg100 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 59ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-08-27 13:56:46,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-08-27 13:56:46,268 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...