./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash ca5338245ac2cf80ca20dadcdab0215a80a80895 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 16:51:09,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:51:09,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:51:09,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:51:09,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:51:09,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:51:09,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:51:09,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:51:09,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:51:09,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:51:09,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:51:09,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:51:09,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:51:09,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:51:09,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:51:09,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:51:09,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:51:09,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:51:09,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:51:09,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:51:09,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:51:09,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:51:09,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:51:09,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:51:09,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:51:09,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:51:09,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:51:09,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:51:09,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:51:09,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:51:09,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:51:09,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:51:09,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:51:09,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:51:09,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:51:09,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:51:09,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:51:09,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:51:09,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:51:09,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:51:09,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:51:09,827 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:51:09,863 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:51:09,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:51:09,865 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:51:09,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:51:09,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:51:09,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:51:09,867 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:51:09,868 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:51:09,868 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:51:09,868 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:51:09,869 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:51:09,869 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:51:09,869 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:51:09,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:51:09,870 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:51:09,870 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:51:09,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:51:09,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:51:09,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:51:09,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:51:09,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:51:09,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:51:09,871 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:51:09,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:51:09,872 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:51:09,872 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:51:09,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:51:09,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:51:09,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:51:09,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:51:09,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:51:09,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:51:09,875 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:51:09,875 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca5338245ac2cf80ca20dadcdab0215a80a80895 [2021-08-27 16:51:10,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:51:10,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:51:10,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:51:10,211 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:51:10,211 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:51:10,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2021-08-27 16:51:10,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26904b51e/558ff520ea474dbba952edf0b22d60de/FLAG71b7d4617 [2021-08-27 16:51:10,742 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:51:10,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2021-08-27 16:51:10,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26904b51e/558ff520ea474dbba952edf0b22d60de/FLAG71b7d4617 [2021-08-27 16:51:11,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26904b51e/558ff520ea474dbba952edf0b22d60de [2021-08-27 16:51:11,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:51:11,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:51:11,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:51:11,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:51:11,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:51:11,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:51:11" (1/1) ... [2021-08-27 16:51:11,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@887d57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:11, skipping insertion in model container [2021-08-27 16:51:11,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:51:11" (1/1) ... [2021-08-27 16:51:11,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:51:11,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:51:11,523 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c[6915,6928] [2021-08-27 16:51:11,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:51:11,533 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:51:11,605 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c[6915,6928] [2021-08-27 16:51:11,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:51:11,628 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:51:11,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:11 WrapperNode [2021-08-27 16:51:11,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:51:11,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:51:11,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:51:11,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:51:11,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:11" (1/1) ... [2021-08-27 16:51:11,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:11" (1/1) ... [2021-08-27 16:51:11,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:51:11,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:51:11,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:51:11,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:51:11,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:11" (1/1) ... [2021-08-27 16:51:11,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:11" (1/1) ... [2021-08-27 16:51:11,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:11" (1/1) ... [2021-08-27 16:51:11,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:11" (1/1) ... [2021-08-27 16:51:11,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:11" (1/1) ... [2021-08-27 16:51:11,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:11" (1/1) ... [2021-08-27 16:51:11,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:11" (1/1) ... [2021-08-27 16:51:11,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:51:11,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:51:11,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:51:11,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:51:11,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:11" (1/1) ... [2021-08-27 16:51:11,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:51:11,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:51:11,782 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 16:51:11,806 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 16:51:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:51:11,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:51:11,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:51:11,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:51:12,304 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:51:12,304 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-08-27 16:51:12,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:51:12 BoogieIcfgContainer [2021-08-27 16:51:12,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:51:12,307 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:51:12,307 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:51:12,310 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:51:12,310 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:51:12,311 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:51:11" (1/3) ... [2021-08-27 16:51:12,311 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68b00366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:51:12, skipping insertion in model container [2021-08-27 16:51:12,312 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:51:12,312 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:11" (2/3) ... [2021-08-27 16:51:12,312 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68b00366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:51:12, skipping insertion in model container [2021-08-27 16:51:12,312 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:51:12,312 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:51:12" (3/3) ... [2021-08-27 16:51:12,313 INFO L389 chiAutomizerObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2021-08-27 16:51:12,348 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:51:12,348 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:51:12,348 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:51:12,348 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:51:12,348 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:51:12,348 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:51:12,349 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:51:12,349 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:51:12,362 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 78 states, 77 states have (on average 1.6623376623376624) internal successors, (128), 77 states have internal predecessors, (128), 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 16:51:12,380 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 51 [2021-08-27 16:51:12,380 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:51:12,380 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:51:12,386 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:51:12,386 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:51:12,386 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:51:12,387 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 78 states, 77 states have (on average 1.6623376623376624) internal successors, (128), 77 states have internal predecessors, (128), 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 16:51:12,392 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 51 [2021-08-27 16:51:12,392 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:51:12,392 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:51:12,393 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:51:12,393 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:51:12,400 INFO L791 eck$LassoCheckResult]: Stem: 56#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(49);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0;~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[0 := #funAddr~node1.base], ~nodes~0.offset[0 := #funAddr~node1.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[1 := #funAddr~node2.base], ~nodes~0.offset[1 := #funAddr~node2.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[2 := #funAddr~node3.base], ~nodes~0.offset[2 := #funAddr~node3.offset]; 40#L-1true havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~ret29, main_#t~ret30, main_#t~post31, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet13;havoc main_#t~nondet13;~id1~0 := main_#t~nondet14;havoc main_#t~nondet14;~st1~0 := main_#t~nondet15;havoc main_#t~nondet15;~send1~0 := main_#t~nondet16;havoc main_#t~nondet16;~mode1~0 := main_#t~nondet17;havoc main_#t~nondet17;~alive1~0 := main_#t~nondet18;havoc main_#t~nondet18;~id2~0 := main_#t~nondet19;havoc main_#t~nondet19;~st2~0 := main_#t~nondet20;havoc main_#t~nondet20;~send2~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode2~0 := main_#t~nondet22;havoc main_#t~nondet22;~alive2~0 := main_#t~nondet23;havoc main_#t~nondet23;~id3~0 := main_#t~nondet24;havoc main_#t~nondet24;~st3~0 := main_#t~nondet25;havoc main_#t~nondet25;~send3~0 := main_#t~nondet26;havoc main_#t~nondet26;~mode3~0 := main_#t~nondet27;havoc main_#t~nondet27;~alive3~0 := main_#t~nondet28;havoc main_#t~nondet28;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 35#L162true assume !(0 == ~r1~0);init_~tmp~0 := 0; 53#L162-1true init_#res := init_~tmp~0; 16#L231true main_#t~ret29 := init_#res;main_~i2~0 := main_#t~ret29;havoc main_#t~ret29; 78#L278true assume 0 == main_~i2~0;assume false; 4#L278-2true ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main_~i2~0 := 0; 13#L286-2true [2021-08-27 16:51:12,401 INFO L793 eck$LassoCheckResult]: Loop: 13#L286-2true assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 76#L57true assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 5#L61true assume !(node1_~m1~0 != ~nomsg~0); 46#L61-1true ~mode1~0 := 0; 63#L57-2true havoc node2_#t~ite9, node2_#t~ite10, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 54#L94true assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 10#L97true assume !(node2_~m2~0 != ~nomsg~0); 19#L97-1true ~mode2~0 := 0; 39#L94-2true havoc node3_#t~ite11, node3_#t~ite12, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 61#L128true assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 47#L131true assume !(node3_~m3~0 != ~nomsg~0); 32#L131-1true ~mode3~0 := 0; 77#L128-2true ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 31#L239true assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 25#L239-1true check_#res := check_~tmp~1; 17#L251true main_#t~ret30 := check_#res;main_~c1~0 := main_#t~ret30;havoc main_#t~ret30;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 9#L310true assume !(0 == assert_~arg % 256); 75#L305true main_#t~post31 := main_~i2~0;main_~i2~0 := 1 + main_#t~post31;havoc main_#t~post31; 13#L286-2true [2021-08-27 16:51:12,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:51:12,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1898425706, now seen corresponding path program 1 times [2021-08-27 16:51:12,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:51:12,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210953526] [2021-08-27 16:51:12,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:51:12,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:51:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:51:12,611 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 16:51:12,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:51:12,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210953526] [2021-08-27 16:51:12,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210953526] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:51:12,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:51:12,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 16:51:12,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359024849] [2021-08-27 16:51:12,618 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 16:51:12,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:51:12,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1437480316, now seen corresponding path program 1 times [2021-08-27 16:51:12,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:51:12,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77197931] [2021-08-27 16:51:12,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:51:12,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:51:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:51:12,831 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 16:51:12,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:51:12,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77197931] [2021-08-27 16:51:12,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77197931] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:51:12,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:51:12,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:51:12,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686336690] [2021-08-27 16:51:12,835 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:51:12,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:51:12,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-27 16:51:12,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 16:51:12,850 INFO L87 Difference]: Start difference. First operand has 78 states, 77 states have (on average 1.6623376623376624) internal successors, (128), 77 states have internal predecessors, (128), 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 3.5) internal successors, (7), 2 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 16:51:12,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:51:12,860 INFO L93 Difference]: Finished difference Result 78 states and 125 transitions. [2021-08-27 16:51:12,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 16:51:12,862 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 125 transitions. [2021-08-27 16:51:12,865 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 50 [2021-08-27 16:51:12,870 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 73 states and 120 transitions. [2021-08-27 16:51:12,871 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2021-08-27 16:51:12,871 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2021-08-27 16:51:12,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 120 transitions. [2021-08-27 16:51:12,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:51:12,872 INFO L681 BuchiCegarLoop]: Abstraction has 73 states and 120 transitions. [2021-08-27 16:51:12,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states and 120 transitions. [2021-08-27 16:51:12,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-08-27 16:51:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 73 states have (on average 1.643835616438356) internal successors, (120), 72 states have internal predecessors, (120), 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 16:51:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 120 transitions. [2021-08-27 16:51:12,898 INFO L704 BuchiCegarLoop]: Abstraction has 73 states and 120 transitions. [2021-08-27 16:51:12,898 INFO L587 BuchiCegarLoop]: Abstraction has 73 states and 120 transitions. [2021-08-27 16:51:12,898 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:51:12,898 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 120 transitions. [2021-08-27 16:51:12,900 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 50 [2021-08-27 16:51:12,900 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:51:12,900 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:51:12,901 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:51:12,901 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:51:12,901 INFO L791 eck$LassoCheckResult]: Stem: 233#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(49);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0;~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[0 := #funAddr~node1.base], ~nodes~0.offset[0 := #funAddr~node1.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[1 := #funAddr~node2.base], ~nodes~0.offset[1 := #funAddr~node2.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[2 := #funAddr~node3.base], ~nodes~0.offset[2 := #funAddr~node3.offset]; 223#L-1 havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~ret29, main_#t~ret30, main_#t~post31, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet13;havoc main_#t~nondet13;~id1~0 := main_#t~nondet14;havoc main_#t~nondet14;~st1~0 := main_#t~nondet15;havoc main_#t~nondet15;~send1~0 := main_#t~nondet16;havoc main_#t~nondet16;~mode1~0 := main_#t~nondet17;havoc main_#t~nondet17;~alive1~0 := main_#t~nondet18;havoc main_#t~nondet18;~id2~0 := main_#t~nondet19;havoc main_#t~nondet19;~st2~0 := main_#t~nondet20;havoc main_#t~nondet20;~send2~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode2~0 := main_#t~nondet22;havoc main_#t~nondet22;~alive2~0 := main_#t~nondet23;havoc main_#t~nondet23;~id3~0 := main_#t~nondet24;havoc main_#t~nondet24;~st3~0 := main_#t~nondet25;havoc main_#t~nondet25;~send3~0 := main_#t~nondet26;havoc main_#t~nondet26;~mode3~0 := main_#t~nondet27;havoc main_#t~nondet27;~alive3~0 := main_#t~nondet28;havoc main_#t~nondet28;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 218#L162 assume !(0 == ~r1~0);init_~tmp~0 := 0; 170#L162-1 init_#res := init_~tmp~0; 194#L231 main_#t~ret29 := init_#res;main_~i2~0 := main_#t~ret29;havoc main_#t~ret29; 195#L278 assume !(0 == main_~i2~0); 167#L278-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main_~i2~0 := 0; 168#L286-2 [2021-08-27 16:51:12,901 INFO L793 eck$LassoCheckResult]: Loop: 168#L286-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 189#L57 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 172#L61 assume !(node1_~m1~0 != ~nomsg~0); 174#L61-1 ~mode1~0 := 0; 201#L57-2 havoc node2_#t~ite9, node2_#t~ite10, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 232#L94 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 181#L97 assume !(node2_~m2~0 != ~nomsg~0); 183#L97-1 ~mode2~0 := 0; 199#L94-2 havoc node3_#t~ite11, node3_#t~ite12, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 221#L128 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 229#L131 assume !(node3_~m3~0 != ~nomsg~0); 198#L131-1 ~mode3~0 := 0; 214#L128-2 ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 213#L239 assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 191#L239-1 check_#res := check_~tmp~1; 196#L251 main_#t~ret30 := check_#res;main_~c1~0 := main_#t~ret30;havoc main_#t~ret30;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 179#L310 assume !(0 == assert_~arg % 256); 180#L305 main_#t~post31 := main_~i2~0;main_~i2~0 := 1 + main_#t~post31;havoc main_#t~post31; 168#L286-2 [2021-08-27 16:51:12,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:51:12,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1898425768, now seen corresponding path program 1 times [2021-08-27 16:51:12,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:51:12,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026957618] [2021-08-27 16:51:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:51:12,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:51:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:51:12,956 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 16:51:12,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:51:12,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026957618] [2021-08-27 16:51:12,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026957618] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:51:12,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:51:12,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:51:12,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987974984] [2021-08-27 16:51:12,958 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 16:51:12,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:51:12,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1437480316, now seen corresponding path program 2 times [2021-08-27 16:51:12,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:51:12,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263130153] [2021-08-27 16:51:12,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:51:12,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:51:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:51:13,041 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 16:51:13,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:51:13,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263130153] [2021-08-27 16:51:13,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263130153] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:51:13,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:51:13,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:51:13,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830735540] [2021-08-27 16:51:13,042 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:51:13,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:51:13,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:51:13,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:51:13,044 INFO L87 Difference]: Start difference. First operand 73 states and 120 transitions. cyclomatic complexity: 48 Second operand has 5 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 16:51:13,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:51:13,113 INFO L93 Difference]: Finished difference Result 126 states and 202 transitions. [2021-08-27 16:51:13,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 16:51:13,114 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 202 transitions. [2021-08-27 16:51:13,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 50 [2021-08-27 16:51:13,118 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 123 states and 183 transitions. [2021-08-27 16:51:13,118 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 123 [2021-08-27 16:51:13,122 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 123 [2021-08-27 16:51:13,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 183 transitions. [2021-08-27 16:51:13,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:51:13,123 INFO L681 BuchiCegarLoop]: Abstraction has 123 states and 183 transitions. [2021-08-27 16:51:13,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states and 183 transitions. [2021-08-27 16:51:13,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 73. [2021-08-27 16:51:13,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 73 states have (on average 1.4109589041095891) internal successors, (103), 72 states have internal predecessors, (103), 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 16:51:13,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 103 transitions. [2021-08-27 16:51:13,128 INFO L704 BuchiCegarLoop]: Abstraction has 73 states and 103 transitions. [2021-08-27 16:51:13,128 INFO L587 BuchiCegarLoop]: Abstraction has 73 states and 103 transitions. [2021-08-27 16:51:13,128 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:51:13,128 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 103 transitions. [2021-08-27 16:51:13,129 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 50 [2021-08-27 16:51:13,129 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:51:13,136 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:51:13,139 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:51:13,139 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:51:13,143 INFO L791 eck$LassoCheckResult]: Stem: 447#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(49);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0;~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[0 := #funAddr~node1.base], ~nodes~0.offset[0 := #funAddr~node1.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[1 := #funAddr~node2.base], ~nodes~0.offset[1 := #funAddr~node2.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[2 := #funAddr~node3.base], ~nodes~0.offset[2 := #funAddr~node3.offset]; 437#L-1 havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~ret29, main_#t~ret30, main_#t~post31, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet13;havoc main_#t~nondet13;~id1~0 := main_#t~nondet14;havoc main_#t~nondet14;~st1~0 := main_#t~nondet15;havoc main_#t~nondet15;~send1~0 := main_#t~nondet16;havoc main_#t~nondet16;~mode1~0 := main_#t~nondet17;havoc main_#t~nondet17;~alive1~0 := main_#t~nondet18;havoc main_#t~nondet18;~id2~0 := main_#t~nondet19;havoc main_#t~nondet19;~st2~0 := main_#t~nondet20;havoc main_#t~nondet20;~send2~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode2~0 := main_#t~nondet22;havoc main_#t~nondet22;~alive2~0 := main_#t~nondet23;havoc main_#t~nondet23;~id3~0 := main_#t~nondet24;havoc main_#t~nondet24;~st3~0 := main_#t~nondet25;havoc main_#t~nondet25;~send3~0 := main_#t~nondet26;havoc main_#t~nondet26;~mode3~0 := main_#t~nondet27;havoc main_#t~nondet27;~alive3~0 := main_#t~nondet28;havoc main_#t~nondet28;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 432#L162 assume 0 == ~r1~0; 433#L163 assume ~alive1~0 % 256 + ~alive2~0 % 256 + ~alive3~0 % 256 >= 1; 413#L164 assume ~id1~0 >= 0; 405#L165 assume 0 == ~st1~0; 406#L166 assume ~send1~0 == ~id1~0; 415#L167 assume 0 == ~mode1~0 % 256; 390#L168 assume ~id2~0 >= 0; 391#L169 assume 0 == ~st2~0; 453#L170 assume ~send2~0 == ~id2~0; 441#L171 assume 0 == ~mode2~0 % 256; 438#L172 assume ~id3~0 >= 0; 439#L173 assume 0 == ~st3~0; 451#L174 assume ~send3~0 == ~id3~0; 383#L175 assume 0 == ~mode3~0 % 256; 384#L176 assume ~id1~0 != ~id2~0; 445#L177 assume ~id1~0 != ~id3~0; 428#L178 assume ~id2~0 != ~id3~0;init_~tmp~0 := 1; 429#L162-1 init_#res := init_~tmp~0; 407#L231 main_#t~ret29 := init_#res;main_~i2~0 := main_#t~ret29;havoc main_#t~ret29; 408#L278 assume !(0 == main_~i2~0); 381#L278-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main_~i2~0 := 0; 382#L286-2 [2021-08-27 16:51:13,144 INFO L793 eck$LassoCheckResult]: Loop: 382#L286-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 402#L57 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 385#L61 assume !(node1_~m1~0 != ~nomsg~0); 387#L61-1 ~mode1~0 := 0; 414#L57-2 havoc node2_#t~ite9, node2_#t~ite10, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 446#L94 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 394#L97 assume !(node2_~m2~0 != ~nomsg~0); 396#L97-1 ~mode2~0 := 0; 412#L94-2 havoc node3_#t~ite11, node3_#t~ite12, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 435#L128 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 443#L131 assume !(node3_~m3~0 != ~nomsg~0); 411#L131-1 ~mode3~0 := 0; 427#L128-2 ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 426#L239 assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 404#L239-1 check_#res := check_~tmp~1; 409#L251 main_#t~ret30 := check_#res;main_~c1~0 := main_#t~ret30;havoc main_#t~ret30;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 392#L310 assume !(0 == assert_~arg % 256); 393#L305 main_#t~post31 := main_~i2~0;main_~i2~0 := 1 + main_#t~post31;havoc main_#t~post31; 382#L286-2 [2021-08-27 16:51:13,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:51:13,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1524872798, now seen corresponding path program 1 times [2021-08-27 16:51:13,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:51:13,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996762760] [2021-08-27 16:51:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:51:13,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:51:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:51:13,182 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:51:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:51:13,244 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:51:13,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:51:13,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1437480316, now seen corresponding path program 3 times [2021-08-27 16:51:13,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:51:13,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602431440] [2021-08-27 16:51:13,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:51:13,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:51:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:51:13,363 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 16:51:13,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:51:13,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602431440] [2021-08-27 16:51:13,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602431440] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:51:13,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:51:13,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:51:13,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933190827] [2021-08-27 16:51:13,365 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:51:13,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:51:13,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 16:51:13,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 16:51:13,369 INFO L87 Difference]: Start difference. First operand 73 states and 103 transitions. cyclomatic complexity: 31 Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 16:51:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:51:13,424 INFO L93 Difference]: Finished difference Result 76 states and 105 transitions. [2021-08-27 16:51:13,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:51:13,425 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 105 transitions. [2021-08-27 16:51:13,428 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 50 [2021-08-27 16:51:13,431 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 73 states and 101 transitions. [2021-08-27 16:51:13,432 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2021-08-27 16:51:13,433 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2021-08-27 16:51:13,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 101 transitions. [2021-08-27 16:51:13,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:51:13,437 INFO L681 BuchiCegarLoop]: Abstraction has 73 states and 101 transitions. [2021-08-27 16:51:13,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states and 101 transitions. [2021-08-27 16:51:13,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-08-27 16:51:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 73 states have (on average 1.3835616438356164) internal successors, (101), 72 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:51:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2021-08-27 16:51:13,445 INFO L704 BuchiCegarLoop]: Abstraction has 73 states and 101 transitions. [2021-08-27 16:51:13,446 INFO L587 BuchiCegarLoop]: Abstraction has 73 states and 101 transitions. [2021-08-27 16:51:13,446 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 16:51:13,446 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 101 transitions. [2021-08-27 16:51:13,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 50 [2021-08-27 16:51:13,447 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:51:13,447 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:51:13,447 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:51:13,447 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:51:13,448 INFO L791 eck$LassoCheckResult]: Stem: 608#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(49);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~alive1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~alive2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~alive3~0 := 0;~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[0 := #funAddr~node1.base], ~nodes~0.offset[0 := #funAddr~node1.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[1 := #funAddr~node2.base], ~nodes~0.offset[1 := #funAddr~node2.offset];~nodes~0.base, ~nodes~0.offset := ~nodes~0.base[2 := #funAddr~node3.base], ~nodes~0.offset[2 := #funAddr~node3.offset]; 597#L-1 havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~ret29, main_#t~ret30, main_#t~post31, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet13;havoc main_#t~nondet13;~id1~0 := main_#t~nondet14;havoc main_#t~nondet14;~st1~0 := main_#t~nondet15;havoc main_#t~nondet15;~send1~0 := main_#t~nondet16;havoc main_#t~nondet16;~mode1~0 := main_#t~nondet17;havoc main_#t~nondet17;~alive1~0 := main_#t~nondet18;havoc main_#t~nondet18;~id2~0 := main_#t~nondet19;havoc main_#t~nondet19;~st2~0 := main_#t~nondet20;havoc main_#t~nondet20;~send2~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode2~0 := main_#t~nondet22;havoc main_#t~nondet22;~alive2~0 := main_#t~nondet23;havoc main_#t~nondet23;~id3~0 := main_#t~nondet24;havoc main_#t~nondet24;~st3~0 := main_#t~nondet25;havoc main_#t~nondet25;~send3~0 := main_#t~nondet26;havoc main_#t~nondet26;~mode3~0 := main_#t~nondet27;havoc main_#t~nondet27;~alive3~0 := main_#t~nondet28;havoc main_#t~nondet28;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 593#L162 assume 0 == ~r1~0; 594#L163 assume ~alive1~0 % 256 + ~alive2~0 % 256 + ~alive3~0 % 256 >= 1; 574#L164 assume ~id1~0 >= 0; 566#L165 assume 0 == ~st1~0; 567#L166 assume ~send1~0 == ~id1~0; 578#L167 assume 0 == ~mode1~0 % 256; 551#L168 assume ~id2~0 >= 0; 552#L169 assume 0 == ~st2~0; 614#L170 assume ~send2~0 == ~id2~0; 602#L171 assume 0 == ~mode2~0 % 256; 599#L172 assume ~id3~0 >= 0; 600#L173 assume 0 == ~st3~0; 612#L174 assume ~send3~0 == ~id3~0; 544#L175 assume 0 == ~mode3~0 % 256; 545#L176 assume ~id1~0 != ~id2~0; 606#L177 assume ~id1~0 != ~id3~0; 589#L178 assume ~id2~0 != ~id3~0;init_~tmp~0 := 1; 590#L162-1 init_#res := init_~tmp~0; 568#L231 main_#t~ret29 := init_#res;main_~i2~0 := main_#t~ret29;havoc main_#t~ret29; 569#L278 assume !(0 == main_~i2~0); 542#L278-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main_~i2~0 := 0; 543#L286-2 [2021-08-27 16:51:13,448 INFO L793 eck$LassoCheckResult]: Loop: 543#L286-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 563#L57 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 546#L61 assume !(node1_~m1~0 != ~nomsg~0); 548#L61-1 ~mode1~0 := 0; 575#L57-2 havoc node2_#t~ite9, node2_#t~ite10, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 607#L94 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 555#L97 assume !(node2_~m2~0 != ~nomsg~0); 557#L97-1 ~mode2~0 := 0; 573#L94-2 havoc node3_#t~ite11, node3_#t~ite12, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 596#L128 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 604#L131 assume !(node3_~m3~0 != ~nomsg~0); 572#L131-1 ~mode3~0 := 0; 588#L128-2 ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 587#L239 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 585#L240 assume ~r1~0 < 3;check_~tmp~1 := 1; 565#L239-1 check_#res := check_~tmp~1; 570#L251 main_#t~ret30 := check_#res;main_~c1~0 := main_#t~ret30;havoc main_#t~ret30;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 553#L310 assume !(0 == assert_~arg % 256); 554#L305 main_#t~post31 := main_~i2~0;main_~i2~0 := 1 + main_#t~post31;havoc main_#t~post31; 543#L286-2 [2021-08-27 16:51:13,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:51:13,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1524872798, now seen corresponding path program 2 times [2021-08-27 16:51:13,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:51:13,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996420398] [2021-08-27 16:51:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:51:13,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:51:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:51:13,478 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:51:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:51:13,511 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:51:13,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:51:13,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1995544096, now seen corresponding path program 1 times [2021-08-27 16:51:13,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:51:13,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17370671] [2021-08-27 16:51:13,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:51:13,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:51:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:51:13,532 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:51:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:51:13,551 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:51:13,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:51:13,553 INFO L82 PathProgramCache]: Analyzing trace with hash 964547683, now seen corresponding path program 1 times [2021-08-27 16:51:13,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:51:13,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905086504] [2021-08-27 16:51:13,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:51:13,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:51:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:51:13,617 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 16:51:13,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:51:13,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905086504] [2021-08-27 16:51:13,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905086504] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:51:13,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:51:13,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:51:13,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44724188] [2021-08-27 16:51:14,247 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 16:51:14,248 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 16:51:14,248 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 16:51:14,248 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 16:51:14,248 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 16:51:14,248 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:51:14,248 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 16:51:14,248 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 16:51:14,248 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2021-08-27 16:51:14,249 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 16:51:14,249 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 16:51:14,265 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 16:51:14,273 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 16:51:14,276 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 16:51:14,281 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 16:51:14,292 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 16:51:14,298 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 16:51:14,301 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 16:51:14,304 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 16:51:14,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 16:51:14,309 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 16:51:14,316 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 16:51:14,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 16:51:14,325 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 16:51:14,328 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 16:51:14,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 16:51:14,346 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 16:51:14,357 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 16:51:14,359 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 16:51:14,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 16:51:14,387 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 16:51:14,391 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 16:51:14,394 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 16:51:14,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 16:51:14,900 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 16:51:14,901 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 16:51:14,903 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:51:14,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:51:14,908 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 16:51:14,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 16:51:14,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 16:51:14,928 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 16:51:14,962 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 [2021-08-27 16:51:14,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:51:14,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:51:14,964 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 16:51:14,967 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 16:51:14,969 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 16:51:14,969 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 16:51:14,998 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 16:51:15,003 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 16:51:15,004 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 16:51:15,004 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 16:51:15,004 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 16:51:15,004 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 16:51:15,004 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 16:51:15,004 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:51:15,004 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 16:51:15,004 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 16:51:15,005 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2021-08-27 16:51:15,005 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 16:51:15,005 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 16:51:15,008 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 16:51:15,027 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 16:51:15,029 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 16:51:15,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 16:51:15,045 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 16:51:15,053 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 16:51:15,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 16:51:15,058 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 16:51:15,065 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 16:51:15,068 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 16:51:15,071 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 16:51:15,073 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 16:51:15,075 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 16:51:15,078 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 16:51:15,082 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 16:51:15,087 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 16:51:15,090 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 16:51:15,103 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 16:51:15,106 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 16:51:15,127 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 16:51:15,130 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 16:51:15,134 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 16:51:15,137 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 16:51:15,594 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 16:51:15,598 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 16:51:15,599 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:51:15,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:51:15,602 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 16:51:15,602 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 16:51:15,603 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 16:51:15,611 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 16:51:15,611 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 16:51:15,611 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 16:51:15,611 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 16:51:15,611 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 16:51:15,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 16:51:15,613 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 16:51:15,616 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 16:51:15,621 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 16:51:15,621 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 16:51:15,622 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:51:15,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:51:15,653 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 16:51:15,663 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 16:51:15,663 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 16:51:15,663 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 16:51:15,664 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 16:51:15,664 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0) = -2*ULTIMATE.start_main_~i2~0 + 11 Supporting invariants [] [2021-08-27 16:51:15,701 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 16:51:15,703 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 16:51:15,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:51:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:51:15,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 16:51:15,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 16:51:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:51:15,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 16:51:15,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 16:51:15,924 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 16:51:16,047 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 16:51:16,051 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 16:51:16,051 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 101 transitions. cyclomatic complexity: 29 Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 16:51:16,100 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 101 transitions. cyclomatic complexity: 29. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 123 states and 180 transitions. Complement of second has 4 states. [2021-08-27 16:51:16,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 16:51:16,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 16:51:16,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2021-08-27 16:51:16,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 101 transitions. Stem has 23 letters. Loop has 19 letters. [2021-08-27 16:51:16,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 16:51:16,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 101 transitions. Stem has 42 letters. Loop has 19 letters. [2021-08-27 16:51:16,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 16:51:16,107 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 101 transitions. Stem has 23 letters. Loop has 38 letters. [2021-08-27 16:51:16,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 16:51:16,109 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 180 transitions. [2021-08-27 16:51:16,113 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 16:51:16,113 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 0 states and 0 transitions. [2021-08-27 16:51:16,114 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 16:51:16,114 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 16:51:16,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 16:51:16,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:51:16,115 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 16:51:16,115 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 16:51:16,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:51:16,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:51:16,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:51:16,117 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 16:51:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:51:16,117 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-08-27 16:51:16,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 16:51:16,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-08-27 16:51:16,117 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 16:51:16,117 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 16:51:16,118 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 16:51:16,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 16:51:16,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 16:51:16,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:51:16,118 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 16:51:16,118 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 16:51:16,118 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 16:51:16,118 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-27 16:51:16,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 16:51:16,118 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 16:51:16,119 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 16:51:16,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:51:16 BoogieIcfgContainer [2021-08-27 16:51:16,124 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:51:16,124 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:51:16,124 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:51:16,125 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:51:16,125 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:51:12" (3/4) ... [2021-08-27 16:51:16,127 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 16:51:16,127 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:51:16,129 INFO L168 Benchmark]: Toolchain (without parser) took 4854.42 ms. Allocated memory was 54.5 MB in the beginning and 121.6 MB in the end (delta: 67.1 MB). Free memory was 31.3 MB in the beginning and 57.1 MB in the end (delta: -25.8 MB). Peak memory consumption was 41.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:51:16,129 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 36.4 MB in the end (delta: 37.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:51:16,130 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.92 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 31.1 MB in the beginning and 50.6 MB in the end (delta: -19.4 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2021-08-27 16:51:16,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.86 ms. Allocated memory is still 69.2 MB. Free memory was 50.6 MB in the beginning and 48.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:51:16,135 INFO L168 Benchmark]: Boogie Preprocessor took 52.41 ms. Allocated memory is still 69.2 MB. Free memory was 48.4 MB in the beginning and 46.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:51:16,135 INFO L168 Benchmark]: RCFGBuilder took 558.60 ms. Allocated memory is still 69.2 MB. Free memory was 46.7 MB in the beginning and 44.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:51:16,135 INFO L168 Benchmark]: BuchiAutomizer took 3817.12 ms. Allocated memory was 69.2 MB in the beginning and 121.6 MB in the end (delta: 52.4 MB). Free memory was 44.9 MB in the beginning and 58.2 MB in the end (delta: -13.2 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-08-27 16:51:16,136 INFO L168 Benchmark]: Witness Printer took 3.17 ms. Allocated memory is still 121.6 MB. Free memory was 58.2 MB in the beginning and 57.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 16:51:16,138 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 36.4 MB in the end (delta: 37.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 353.92 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 31.1 MB in the beginning and 50.6 MB in the end (delta: -19.4 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.86 ms. Allocated memory is still 69.2 MB. Free memory was 50.6 MB in the beginning and 48.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.41 ms. Allocated memory is still 69.2 MB. Free memory was 48.4 MB in the beginning and 46.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 558.60 ms. Allocated memory is still 69.2 MB. Free memory was 46.7 MB in the beginning and 44.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3817.12 ms. Allocated memory was 69.2 MB in the beginning and 121.6 MB in the end (delta: 52.4 MB). Free memory was 44.9 MB in the beginning and 58.2 MB in the end (delta: -13.2 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * Witness Printer took 3.17 ms. Allocated memory is still 121.6 MB. Free memory was 58.2 MB in the beginning and 57.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i2 + 11 and consists of 3 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.7s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 3.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 27.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 50 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 73 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 441 SDtfs, 183 SDslu, 699 SDs, 0 SdLazy, 35 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 45.0ms Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc0 concLT1 SILN0 SILU0 SILI2 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital122 mio100 ax129 hnf107 lsp22 ukn100 mio100 lsp100 div168 bol100 ite100 ukn100 eq153 hnf75 smp100 dnf104 smp96 tf102 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 65ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-08-27 16:51:16,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...