./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3a877d22 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.6.ufo.UNBOUNDED.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 5692c849f4d89bdffd108b63efd7f8fc3dfb9eaa92d6e9ffe082f62ca54e1100 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 17:22:53,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 17:22:53,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 17:22:53,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 17:22:53,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 17:22:53,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 17:22:53,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 17:22:53,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 17:22:53,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 17:22:53,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 17:22:53,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 17:22:53,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 17:22:53,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 17:22:53,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 17:22:53,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 17:22:53,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 17:22:53,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 17:22:53,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 17:22:53,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 17:22:53,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 17:22:53,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 17:22:53,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 17:22:53,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 17:22:53,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 17:22:53,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 17:22:53,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 17:22:53,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 17:22:53,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 17:22:53,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 17:22:53,623 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 17:22:53,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 17:22:53,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 17:22:53,625 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 17:22:53,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 17:22:53,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 17:22:53,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 17:22:53,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 17:22:53,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 17:22:53,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 17:22:53,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 17:22:53,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 17:22:53,629 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-15 17:22:53,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 17:22:53,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 17:22:53,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 17:22:53,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 17:22:53,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 17:22:53,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 17:22:53,656 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 17:22:53,656 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 17:22:53,656 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 17:22:53,657 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 17:22:53,657 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 17:22:53,657 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 17:22:53,658 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 17:22:53,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 17:22:53,658 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 17:22:53,658 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 17:22:53,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 17:22:53,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 17:22:53,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 17:22:53,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 17:22:53,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 17:22:53,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 17:22:53,659 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 17:22:53,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 17:22:53,659 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 17:22:53,660 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 17:22:53,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 17:22:53,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 17:22:53,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 17:22:53,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 17:22:53,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 17:22:53,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 17:22:53,661 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 17:22:53,662 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5692c849f4d89bdffd108b63efd7f8fc3dfb9eaa92d6e9ffe082f62ca54e1100 [2021-12-15 17:22:53,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 17:22:53,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 17:22:53,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 17:22:53,869 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 17:22:53,870 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 17:22:53,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c [2021-12-15 17:22:53,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c88dc67c3/94b36a1859f74dd4a4c1b9014f6dc58a/FLAG85d1688fb [2021-12-15 17:22:54,346 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 17:22:54,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c [2021-12-15 17:22:54,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c88dc67c3/94b36a1859f74dd4a4c1b9014f6dc58a/FLAG85d1688fb [2021-12-15 17:22:54,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c88dc67c3/94b36a1859f74dd4a4c1b9014f6dc58a [2021-12-15 17:22:54,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 17:22:54,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 17:22:54,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 17:22:54,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 17:22:54,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 17:22:54,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:22:54" (1/1) ... [2021-12-15 17:22:54,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82f309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:54, skipping insertion in model container [2021-12-15 17:22:54,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:22:54" (1/1) ... [2021-12-15 17:22:54,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 17:22:54,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 17:22:54,679 WARN L230 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.6.ufo.UNBOUNDED.pals.c[16964,16977] [2021-12-15 17:22:54,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:22:54,704 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 17:22:54,747 WARN L230 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.6.ufo.UNBOUNDED.pals.c[16964,16977] [2021-12-15 17:22:54,748 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:22:54,759 INFO L208 MainTranslator]: Completed translation [2021-12-15 17:22:54,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:54 WrapperNode [2021-12-15 17:22:54,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 17:22:54,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 17:22:54,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 17:22:54,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 17:22:54,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:54" (1/1) ... [2021-12-15 17:22:54,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:54" (1/1) ... [2021-12-15 17:22:54,805 INFO L137 Inliner]: procedures = 26, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 439 [2021-12-15 17:22:54,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 17:22:54,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 17:22:54,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 17:22:54,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 17:22:54,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:54" (1/1) ... [2021-12-15 17:22:54,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:54" (1/1) ... [2021-12-15 17:22:54,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:54" (1/1) ... [2021-12-15 17:22:54,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:54" (1/1) ... [2021-12-15 17:22:54,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:54" (1/1) ... [2021-12-15 17:22:54,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:54" (1/1) ... [2021-12-15 17:22:54,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:54" (1/1) ... [2021-12-15 17:22:54,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 17:22:54,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 17:22:54,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 17:22:54,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 17:22:54,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:54" (1/1) ... [2021-12-15 17:22:54,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:22:54,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:22:54,892 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:22:54,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-15 17:22:54,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 17:22:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 17:22:54,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 17:22:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 17:22:54,994 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 17:22:54,995 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 17:22:55,366 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 17:22:55,383 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 17:22:55,383 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 17:22:55,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:22:55 BoogieIcfgContainer [2021-12-15 17:22:55,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 17:22:55,386 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 17:22:55,387 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 17:22:55,390 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 17:22:55,391 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:22:55,391 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 05:22:54" (1/3) ... [2021-12-15 17:22:55,393 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@79b9a0df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:22:55, skipping insertion in model container [2021-12-15 17:22:55,393 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:22:55,393 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:54" (2/3) ... [2021-12-15 17:22:55,393 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@79b9a0df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:22:55, skipping insertion in model container [2021-12-15 17:22:55,393 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:22:55,394 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:22:55" (3/3) ... [2021-12-15 17:22:55,395 INFO L388 chiAutomizerObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c [2021-12-15 17:22:55,446 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 17:22:55,446 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 17:22:55,446 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 17:22:55,446 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 17:22:55,446 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 17:22:55,446 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 17:22:55,446 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 17:22:55,447 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 17:22:55,464 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 146 states, 145 states have (on average 1.710344827586207) internal successors, (248), 145 states have internal predecessors, (248), 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) [2021-12-15 17:22:55,489 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 95 [2021-12-15 17:22:55,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:22:55,490 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:22:55,499 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:55,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:55,499 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 17:22:55,501 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 146 states, 145 states have (on average 1.710344827586207) internal successors, (248), 145 states have internal predecessors, (248), 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) [2021-12-15 17:22:55,515 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 95 [2021-12-15 17:22:55,515 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:22:55,515 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:22:55,518 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:55,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:55,524 INFO L791 eck$LassoCheckResult]: Stem: 127#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(47, 2);call #Ultimate.allocInit(12, 3);~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;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~alive4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0;~alive5~0 := 0;~p6~0 := 0;~p6_old~0 := 0;~p6_new~0 := 0;~id6~0 := 0;~st6~0 := 0;~send6~0 := 0;~mode6~0 := 0;~alive6~0 := 0; 44#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~nondet33#1, main_#t~nondet34#1, main_#t~nondet35#1, main_#t~nondet36#1, main_#t~nondet37#1, main_#t~nondet38#1, main_#t~nondet39#1, main_#t~nondet40#1, main_#t~nondet41#1, main_#t~nondet42#1, main_#t~nondet43#1, main_#t~nondet44#1, main_#t~nondet45#1, main_#t~nondet46#1, main_#t~ret47#1, main_#t~ret48#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send1~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode1~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~alive1~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~id2~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~st2~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~send2~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~mode2~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~alive2~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~id3~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~st3~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~send3~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~mode3~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~alive3~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~id4~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~st4~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~send4~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~mode4~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~alive4~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;~id5~0 := main_#t~nondet37#1;havoc main_#t~nondet37#1;~st5~0 := main_#t~nondet38#1;havoc main_#t~nondet38#1;~send5~0 := main_#t~nondet39#1;havoc main_#t~nondet39#1;~mode5~0 := main_#t~nondet40#1;havoc main_#t~nondet40#1;~alive5~0 := main_#t~nondet41#1;havoc main_#t~nondet41#1;~id6~0 := main_#t~nondet42#1;havoc main_#t~nondet42#1;~st6~0 := main_#t~nondet43#1;havoc main_#t~nondet43#1;~send6~0 := main_#t~nondet44#1;havoc main_#t~nondet44#1;~mode6~0 := main_#t~nondet45#1;havoc main_#t~nondet45#1;~alive6~0 := main_#t~nondet46#1;havoc main_#t~nondet46#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 81#L291true assume !(0 == ~r1~0 % 256);init_~tmp~0#1 := 0; 53#L291-1true init_#res#1 := init_~tmp~0#1; 112#L456true main_#t~ret47#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret47#1;havoc main_#t~ret47#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; 45#L22true assume 0 == assume_abort_if_not_~cond#1;assume false; 98#L21true assume { :end_inline_assume_abort_if_not } true;~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;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~nomsg~0;~p6_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 21#L532-2true [2021-12-15 17:22:55,531 INFO L793 eck$LassoCheckResult]: Loop: 21#L532-2true assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 125#L84true assume !(0 != ~mode1~0 % 256); 19#L105true assume !(0 != ~alive1~0 % 256); 24#L108true assume !(~send1~0 != ~id1~0); 94#L108-2true ~mode1~0 := 1; 27#L84-2true assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_#t~ite7#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 50#L122true assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 89#L125true assume !(node2_~m2~0#1 != ~nomsg~0); 23#L125-1true ~mode2~0 := 0; 110#L122-2true assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite8#1, node3_#t~ite9#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 135#L156true assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 77#L159true assume !(node3_~m3~0#1 != ~nomsg~0); 107#L159-1true ~mode3~0 := 0; 43#L156-2true assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite10#1, node4_#t~ite11#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 65#L190true assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 62#L193true assume !(node4_~m4~0#1 != ~nomsg~0); 103#L193-1true ~mode4~0 := 0; 115#L190-2true assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_#t~ite12#1, node5_#t~ite13#1, node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0; 82#L224true assume 0 != ~mode5~0 % 256;node5_~m5~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 97#L227true assume !(node5_~m5~0#1 != ~nomsg~0); 20#L227-1true ~mode5~0 := 0; 100#L224-2true assume { :end_inline_node5 } true;assume { :begin_inline_node6 } true;havoc node6_#t~ite14#1, node6_#t~ite15#1, node6_~m6~0#1;havoc node6_~m6~0#1;node6_~m6~0#1 := ~nomsg~0; 33#L258true assume 0 != ~mode6~0 % 256;node6_~m6~0#1 := ~p5_old~0;~p5_old~0 := ~nomsg~0; 148#L261true assume !(node6_~m6~0#1 != ~nomsg~0); 80#L261-1true ~mode6~0 := 0; 76#L258-2true assume { :end_inline_node6 } true;~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;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~p6_new~0;~p6_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 113#L464true assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 <= 1);check_~tmp~1#1 := 0; 34#L464-1true check_#res#1 := check_~tmp~1#1; 46#L476true main_#t~ret48#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret48#1;havoc main_#t~ret48#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 17#L564true assume !(0 == assert_~arg#1 % 256); 49#L559true assume { :end_inline_assert } true; 21#L532-2true [2021-12-15 17:22:55,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:55,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2035845626, now seen corresponding path program 1 times [2021-12-15 17:22:55,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:55,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920331452] [2021-12-15 17:22:55,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:55,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:22:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:22:55,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:22:55,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920331452] [2021-12-15 17:22:55,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920331452] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:22:55,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:22:55,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 17:22:55,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404996800] [2021-12-15 17:22:55,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:22:55,670 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-15 17:22:55,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:55,672 INFO L85 PathProgramCache]: Analyzing trace with hash 459815077, now seen corresponding path program 1 times [2021-12-15 17:22:55,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:55,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547574955] [2021-12-15 17:22:55,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:55,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:22:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:22:55,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:22:55,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547574955] [2021-12-15 17:22:55,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547574955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:22:55,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:22:55,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:22:55,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173939632] [2021-12-15 17:22:55,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:22:55,841 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:22:55,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:22:55,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 17:22:55,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 17:22:55,870 INFO L87 Difference]: Start difference. First operand has 146 states, 145 states have (on average 1.710344827586207) internal successors, (248), 145 states have internal predecessors, (248), 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) [2021-12-15 17:22:55,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:22:55,890 INFO L93 Difference]: Finished difference Result 142 states and 241 transitions. [2021-12-15 17:22:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 17:22:55,898 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 241 transitions. [2021-12-15 17:22:55,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 94 [2021-12-15 17:22:55,909 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 141 states and 240 transitions. [2021-12-15 17:22:55,911 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 141 [2021-12-15 17:22:55,913 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 141 [2021-12-15 17:22:55,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 240 transitions. [2021-12-15 17:22:55,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:22:55,918 INFO L681 BuchiCegarLoop]: Abstraction has 141 states and 240 transitions. [2021-12-15 17:22:55,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 240 transitions. [2021-12-15 17:22:55,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-12-15 17:22:55,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 141 states have (on average 1.702127659574468) internal successors, (240), 140 states have internal predecessors, (240), 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) [2021-12-15 17:22:55,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 240 transitions. [2021-12-15 17:22:55,946 INFO L704 BuchiCegarLoop]: Abstraction has 141 states and 240 transitions. [2021-12-15 17:22:55,946 INFO L587 BuchiCegarLoop]: Abstraction has 141 states and 240 transitions. [2021-12-15 17:22:55,947 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-15 17:22:55,947 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 141 states and 240 transitions. [2021-12-15 17:22:55,969 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 94 [2021-12-15 17:22:55,969 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:22:55,969 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:22:55,971 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:55,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:55,972 INFO L791 eck$LassoCheckResult]: Stem: 436#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(47, 2);call #Ultimate.allocInit(12, 3);~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;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~alive4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0;~alive5~0 := 0;~p6~0 := 0;~p6_old~0 := 0;~p6_new~0 := 0;~id6~0 := 0;~st6~0 := 0;~send6~0 := 0;~mode6~0 := 0;~alive6~0 := 0; 374#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~nondet33#1, main_#t~nondet34#1, main_#t~nondet35#1, main_#t~nondet36#1, main_#t~nondet37#1, main_#t~nondet38#1, main_#t~nondet39#1, main_#t~nondet40#1, main_#t~nondet41#1, main_#t~nondet42#1, main_#t~nondet43#1, main_#t~nondet44#1, main_#t~nondet45#1, main_#t~nondet46#1, main_#t~ret47#1, main_#t~ret48#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send1~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode1~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~alive1~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~id2~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~st2~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~send2~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~mode2~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~alive2~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~id3~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~st3~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~send3~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~mode3~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~alive3~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~id4~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~st4~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~send4~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~mode4~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~alive4~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;~id5~0 := main_#t~nondet37#1;havoc main_#t~nondet37#1;~st5~0 := main_#t~nondet38#1;havoc main_#t~nondet38#1;~send5~0 := main_#t~nondet39#1;havoc main_#t~nondet39#1;~mode5~0 := main_#t~nondet40#1;havoc main_#t~nondet40#1;~alive5~0 := main_#t~nondet41#1;havoc main_#t~nondet41#1;~id6~0 := main_#t~nondet42#1;havoc main_#t~nondet42#1;~st6~0 := main_#t~nondet43#1;havoc main_#t~nondet43#1;~send6~0 := main_#t~nondet44#1;havoc main_#t~nondet44#1;~mode6~0 := main_#t~nondet45#1;havoc main_#t~nondet45#1;~alive6~0 := main_#t~nondet46#1;havoc main_#t~nondet46#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 375#L291 assume !(0 == ~r1~0 % 256);init_~tmp~0#1 := 0; 305#L291-1 init_#res#1 := init_~tmp~0#1; 386#L456 main_#t~ret47#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret47#1;havoc main_#t~ret47#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; 376#L22 assume !(0 == assume_abort_if_not_~cond#1); 377#L21 assume { :end_inline_assume_abort_if_not } true;~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;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~nomsg~0;~p6_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 338#L532-2 [2021-12-15 17:22:55,972 INFO L793 eck$LassoCheckResult]: Loop: 338#L532-2 assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 339#L84 assume !(0 != ~mode1~0 % 256); 331#L105 assume !(0 != ~alive1~0 % 256); 333#L108 assume !(~send1~0 != ~id1~0); 342#L108-2 ~mode1~0 := 1; 348#L84-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_#t~ite7#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 349#L122 assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 383#L125 assume !(node2_~m2~0#1 != ~nomsg~0); 340#L125-1 ~mode2~0 := 0; 341#L122-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite8#1, node3_#t~ite9#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 430#L156 assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 412#L159 assume !(node3_~m3~0#1 != ~nomsg~0); 326#L159-1 ~mode3~0 := 0; 372#L156-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite10#1, node4_#t~ite11#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 373#L190 assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 394#L193 assume !(node4_~m4~0#1 != ~nomsg~0); 396#L193-1 ~mode4~0 := 0; 428#L190-2 assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_#t~ite12#1, node5_#t~ite13#1, node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0; 416#L224 assume 0 != ~mode5~0 % 256;node5_~m5~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 417#L227 assume !(node5_~m5~0#1 != ~nomsg~0); 334#L227-1 ~mode5~0 := 0; 335#L224-2 assume { :end_inline_node5 } true;assume { :begin_inline_node6 } true;havoc node6_#t~ite14#1, node6_#t~ite15#1, node6_~m6~0#1;havoc node6_~m6~0#1;node6_~m6~0#1 := ~nomsg~0; 359#L258 assume 0 != ~mode6~0 % 256;node6_~m6~0#1 := ~p5_old~0;~p5_old~0 := ~nomsg~0; 361#L261 assume !(node6_~m6~0#1 != ~nomsg~0); 324#L261-1 ~mode6~0 := 0; 300#L258-2 assume { :end_inline_node6 } true;~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;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~p6_new~0;~p6_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 411#L464 assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 <= 1);check_~tmp~1#1 := 0; 362#L464-1 check_#res#1 := check_~tmp~1#1; 363#L476 main_#t~ret48#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret48#1;havoc main_#t~ret48#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 328#L564 assume !(0 == assert_~arg#1 % 256); 329#L559 assume { :end_inline_assert } true; 338#L532-2 [2021-12-15 17:22:55,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:55,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2035845688, now seen corresponding path program 1 times [2021-12-15 17:22:55,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:55,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562474366] [2021-12-15 17:22:55,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:55,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:22:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:22:56,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:22:56,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562474366] [2021-12-15 17:22:56,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562474366] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:22:56,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:22:56,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:22:56,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898443092] [2021-12-15 17:22:56,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:22:56,018 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-15 17:22:56,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:56,019 INFO L85 PathProgramCache]: Analyzing trace with hash 459815077, now seen corresponding path program 2 times [2021-12-15 17:22:56,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:56,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610781662] [2021-12-15 17:22:56,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:56,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:22:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:22:56,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:22:56,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610781662] [2021-12-15 17:22:56,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610781662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:22:56,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:22:56,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:22:56,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115989662] [2021-12-15 17:22:56,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:22:56,082 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:22:56,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:22:56,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 17:22:56,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 17:22:56,083 INFO L87 Difference]: Start difference. First operand 141 states and 240 transitions. cyclomatic complexity: 100 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) [2021-12-15 17:22:56,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:22:56,146 INFO L93 Difference]: Finished difference Result 144 states and 242 transitions. [2021-12-15 17:22:56,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 17:22:56,146 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 144 states and 242 transitions. [2021-12-15 17:22:56,148 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 94 [2021-12-15 17:22:56,148 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 144 states to 141 states and 199 transitions. [2021-12-15 17:22:56,149 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 141 [2021-12-15 17:22:56,149 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 141 [2021-12-15 17:22:56,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 199 transitions. [2021-12-15 17:22:56,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:22:56,150 INFO L681 BuchiCegarLoop]: Abstraction has 141 states and 199 transitions. [2021-12-15 17:22:56,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 199 transitions. [2021-12-15 17:22:56,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-12-15 17:22:56,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 141 states have (on average 1.4113475177304964) internal successors, (199), 140 states have internal predecessors, (199), 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) [2021-12-15 17:22:56,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 199 transitions. [2021-12-15 17:22:56,154 INFO L704 BuchiCegarLoop]: Abstraction has 141 states and 199 transitions. [2021-12-15 17:22:56,154 INFO L587 BuchiCegarLoop]: Abstraction has 141 states and 199 transitions. [2021-12-15 17:22:56,154 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-15 17:22:56,154 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 141 states and 199 transitions. [2021-12-15 17:22:56,155 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 94 [2021-12-15 17:22:56,155 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:22:56,156 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:22:56,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:56,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:56,167 INFO L791 eck$LassoCheckResult]: Stem: 736#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(47, 2);call #Ultimate.allocInit(12, 3);~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;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~alive4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0;~alive5~0 := 0;~p6~0 := 0;~p6_old~0 := 0;~p6_new~0 := 0;~id6~0 := 0;~st6~0 := 0;~send6~0 := 0;~mode6~0 := 0;~alive6~0 := 0; 674#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~nondet33#1, main_#t~nondet34#1, main_#t~nondet35#1, main_#t~nondet36#1, main_#t~nondet37#1, main_#t~nondet38#1, main_#t~nondet39#1, main_#t~nondet40#1, main_#t~nondet41#1, main_#t~nondet42#1, main_#t~nondet43#1, main_#t~nondet44#1, main_#t~nondet45#1, main_#t~nondet46#1, main_#t~ret47#1, main_#t~ret48#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send1~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode1~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~alive1~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~id2~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~st2~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~send2~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~mode2~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~alive2~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~id3~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~st3~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~send3~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~mode3~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~alive3~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~id4~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~st4~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~send4~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~mode4~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~alive4~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;~id5~0 := main_#t~nondet37#1;havoc main_#t~nondet37#1;~st5~0 := main_#t~nondet38#1;havoc main_#t~nondet38#1;~send5~0 := main_#t~nondet39#1;havoc main_#t~nondet39#1;~mode5~0 := main_#t~nondet40#1;havoc main_#t~nondet40#1;~alive5~0 := main_#t~nondet41#1;havoc main_#t~nondet41#1;~id6~0 := main_#t~nondet42#1;havoc main_#t~nondet42#1;~st6~0 := main_#t~nondet43#1;havoc main_#t~nondet43#1;~send6~0 := main_#t~nondet44#1;havoc main_#t~nondet44#1;~mode6~0 := main_#t~nondet45#1;havoc main_#t~nondet45#1;~alive6~0 := main_#t~nondet46#1;havoc main_#t~nondet46#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 675#L291 assume 0 == ~r1~0 % 256; 715#L292 assume ~alive1~0 % 256 + ~alive2~0 % 256 + ~alive3~0 % 256 + ~alive4~0 % 256 + ~alive5~0 % 256 + ~alive6~0 % 256 >= 1; 724#L293 assume ~id1~0 >= 0; 735#L294 assume 0 == ~st1~0; 609#L295 assume ~send1~0 == ~id1~0; 610#L296 assume 0 == ~mode1~0 % 256; 665#L297 assume ~id2~0 >= 0; 657#L298 assume 0 == ~st2~0; 658#L299 assume ~send2~0 == ~id2~0; 673#L300 assume 0 == ~mode2~0 % 256; 705#L301 assume ~id3~0 >= 0; 719#L302 assume 0 == ~st3~0; 720#L303 assume ~send3~0 == ~id3~0; 726#L304 assume 0 == ~mode3~0 % 256; 701#L305 assume ~id4~0 >= 0; 702#L306 assume 0 == ~st4~0; 714#L307 assume ~send4~0 == ~id4~0; 619#L308 assume 0 == ~mode4~0 % 256; 620#L309 assume ~id5~0 >= 0; 710#L310 assume 0 == ~st5~0; 684#L311 assume ~send5~0 == ~id5~0; 685#L312 assume 0 == ~mode5~0 % 256; 646#L313 assume ~id6~0 >= 0; 647#L314 assume 0 == ~st6~0; 681#L315 assume ~send6~0 == ~id6~0; 682#L316 assume 0 == ~mode6~0 % 256; 607#L317 assume ~id1~0 != ~id2~0; 608#L318 assume ~id1~0 != ~id3~0; 738#L319 assume ~id1~0 != ~id4~0; 718#L320 assume ~id1~0 != ~id5~0; 703#L321 assume ~id1~0 != ~id6~0; 704#L322 assume ~id2~0 != ~id3~0; 603#L323 assume ~id2~0 != ~id4~0; 604#L324 assume ~id2~0 != ~id5~0; 630#L325 assume ~id2~0 != ~id6~0; 651#L326 assume ~id3~0 != ~id4~0; 636#L327 assume ~id3~0 != ~id5~0; 637#L328 assume ~id3~0 != ~id6~0; 666#L329 assume ~id4~0 != ~id5~0; 667#L330 assume ~id4~0 != ~id6~0; 617#L331 assume ~id5~0 != ~id6~0;init_~tmp~0#1 := 1; 618#L291-1 init_#res#1 := init_~tmp~0#1; 687#L456 main_#t~ret47#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret47#1;havoc main_#t~ret47#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; 676#L22 assume !(0 == assume_abort_if_not_~cond#1); 677#L21 assume { :end_inline_assume_abort_if_not } true;~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;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~nomsg~0;~p6_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 638#L532-2 [2021-12-15 17:22:56,167 INFO L793 eck$LassoCheckResult]: Loop: 638#L532-2 assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 639#L84 assume !(0 != ~mode1~0 % 256); 631#L105 assume !(0 != ~alive1~0 % 256); 633#L108 assume !(~send1~0 != ~id1~0); 642#L108-2 ~mode1~0 := 1; 648#L84-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_#t~ite7#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 649#L122 assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 683#L125 assume !(node2_~m2~0#1 != ~nomsg~0); 640#L125-1 ~mode2~0 := 0; 641#L122-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite8#1, node3_#t~ite9#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 730#L156 assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 712#L159 assume !(node3_~m3~0#1 != ~nomsg~0); 626#L159-1 ~mode3~0 := 0; 671#L156-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite10#1, node4_#t~ite11#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 672#L190 assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 694#L193 assume !(node4_~m4~0#1 != ~nomsg~0); 696#L193-1 ~mode4~0 := 0; 728#L190-2 assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_#t~ite12#1, node5_#t~ite13#1, node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0; 716#L224 assume 0 != ~mode5~0 % 256;node5_~m5~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 717#L227 assume !(node5_~m5~0#1 != ~nomsg~0); 634#L227-1 ~mode5~0 := 0; 635#L224-2 assume { :end_inline_node5 } true;assume { :begin_inline_node6 } true;havoc node6_#t~ite14#1, node6_#t~ite15#1, node6_~m6~0#1;havoc node6_~m6~0#1;node6_~m6~0#1 := ~nomsg~0; 659#L258 assume 0 != ~mode6~0 % 256;node6_~m6~0#1 := ~p5_old~0;~p5_old~0 := ~nomsg~0; 661#L261 assume !(node6_~m6~0#1 != ~nomsg~0); 624#L261-1 ~mode6~0 := 0; 600#L258-2 assume { :end_inline_node6 } true;~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;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~p6_new~0;~p6_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 711#L464 assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 <= 1);check_~tmp~1#1 := 0; 662#L464-1 check_#res#1 := check_~tmp~1#1; 663#L476 main_#t~ret48#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret48#1;havoc main_#t~ret48#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 628#L564 assume !(0 == assert_~arg#1 % 256); 629#L559 assume { :end_inline_assert } true; 638#L532-2 [2021-12-15 17:22:56,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:56,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1766357374, now seen corresponding path program 1 times [2021-12-15 17:22:56,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:56,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938141831] [2021-12-15 17:22:56,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:56,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:56,203 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:22:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:56,268 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:22:56,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:56,269 INFO L85 PathProgramCache]: Analyzing trace with hash 459815077, now seen corresponding path program 3 times [2021-12-15 17:22:56,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:56,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078498155] [2021-12-15 17:22:56,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:56,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:22:56,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:22:56,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:22:56,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078498155] [2021-12-15 17:22:56,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078498155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:22:56,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:22:56,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:22:56,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324520087] [2021-12-15 17:22:56,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:22:56,357 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:22:56,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:22:56,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 17:22:56,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 17:22:56,358 INFO L87 Difference]: Start difference. First operand 141 states and 199 transitions. cyclomatic complexity: 59 Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:22:56,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:22:56,389 INFO L93 Difference]: Finished difference Result 144 states and 201 transitions. [2021-12-15 17:22:56,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 17:22:56,391 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 144 states and 201 transitions. [2021-12-15 17:22:56,406 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 94 [2021-12-15 17:22:56,408 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 144 states to 141 states and 197 transitions. [2021-12-15 17:22:56,408 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 141 [2021-12-15 17:22:56,408 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 141 [2021-12-15 17:22:56,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 197 transitions. [2021-12-15 17:22:56,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:22:56,412 INFO L681 BuchiCegarLoop]: Abstraction has 141 states and 197 transitions. [2021-12-15 17:22:56,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 197 transitions. [2021-12-15 17:22:56,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-12-15 17:22:56,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 141 states have (on average 1.3971631205673758) internal successors, (197), 140 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 17:22:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 197 transitions. [2021-12-15 17:22:56,417 INFO L704 BuchiCegarLoop]: Abstraction has 141 states and 197 transitions. [2021-12-15 17:22:56,417 INFO L587 BuchiCegarLoop]: Abstraction has 141 states and 197 transitions. [2021-12-15 17:22:56,417 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-15 17:22:56,418 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 141 states and 197 transitions. [2021-12-15 17:22:56,418 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 94 [2021-12-15 17:22:56,418 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:22:56,418 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:22:56,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:56,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:56,419 INFO L791 eck$LassoCheckResult]: Stem: 1033#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(47, 2);call #Ultimate.allocInit(12, 3);~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;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~alive4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0;~alive5~0 := 0;~p6~0 := 0;~p6_old~0 := 0;~p6_new~0 := 0;~id6~0 := 0;~st6~0 := 0;~send6~0 := 0;~mode6~0 := 0;~alive6~0 := 0; 971#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~nondet33#1, main_#t~nondet34#1, main_#t~nondet35#1, main_#t~nondet36#1, main_#t~nondet37#1, main_#t~nondet38#1, main_#t~nondet39#1, main_#t~nondet40#1, main_#t~nondet41#1, main_#t~nondet42#1, main_#t~nondet43#1, main_#t~nondet44#1, main_#t~nondet45#1, main_#t~nondet46#1, main_#t~ret47#1, main_#t~ret48#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send1~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode1~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~alive1~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~id2~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~st2~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~send2~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~mode2~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~alive2~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~id3~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~st3~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~send3~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~mode3~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~alive3~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~id4~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~st4~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~send4~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~mode4~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~alive4~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;~id5~0 := main_#t~nondet37#1;havoc main_#t~nondet37#1;~st5~0 := main_#t~nondet38#1;havoc main_#t~nondet38#1;~send5~0 := main_#t~nondet39#1;havoc main_#t~nondet39#1;~mode5~0 := main_#t~nondet40#1;havoc main_#t~nondet40#1;~alive5~0 := main_#t~nondet41#1;havoc main_#t~nondet41#1;~id6~0 := main_#t~nondet42#1;havoc main_#t~nondet42#1;~st6~0 := main_#t~nondet43#1;havoc main_#t~nondet43#1;~send6~0 := main_#t~nondet44#1;havoc main_#t~nondet44#1;~mode6~0 := main_#t~nondet45#1;havoc main_#t~nondet45#1;~alive6~0 := main_#t~nondet46#1;havoc main_#t~nondet46#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 972#L291 assume 0 == ~r1~0 % 256; 1012#L292 assume ~alive1~0 % 256 + ~alive2~0 % 256 + ~alive3~0 % 256 + ~alive4~0 % 256 + ~alive5~0 % 256 + ~alive6~0 % 256 >= 1; 1021#L293 assume ~id1~0 >= 0; 1032#L294 assume 0 == ~st1~0; 906#L295 assume ~send1~0 == ~id1~0; 907#L296 assume 0 == ~mode1~0 % 256; 962#L297 assume ~id2~0 >= 0; 954#L298 assume 0 == ~st2~0; 955#L299 assume ~send2~0 == ~id2~0; 970#L300 assume 0 == ~mode2~0 % 256; 1002#L301 assume ~id3~0 >= 0; 1016#L302 assume 0 == ~st3~0; 1017#L303 assume ~send3~0 == ~id3~0; 1023#L304 assume 0 == ~mode3~0 % 256; 998#L305 assume ~id4~0 >= 0; 999#L306 assume 0 == ~st4~0; 1011#L307 assume ~send4~0 == ~id4~0; 916#L308 assume 0 == ~mode4~0 % 256; 917#L309 assume ~id5~0 >= 0; 1006#L310 assume 0 == ~st5~0; 980#L311 assume ~send5~0 == ~id5~0; 981#L312 assume 0 == ~mode5~0 % 256; 943#L313 assume ~id6~0 >= 0; 944#L314 assume 0 == ~st6~0; 975#L315 assume ~send6~0 == ~id6~0; 976#L316 assume 0 == ~mode6~0 % 256; 904#L317 assume ~id1~0 != ~id2~0; 905#L318 assume ~id1~0 != ~id3~0; 1035#L319 assume ~id1~0 != ~id4~0; 1015#L320 assume ~id1~0 != ~id5~0; 1000#L321 assume ~id1~0 != ~id6~0; 1001#L322 assume ~id2~0 != ~id3~0; 900#L323 assume ~id2~0 != ~id4~0; 901#L324 assume ~id2~0 != ~id5~0; 927#L325 assume ~id2~0 != ~id6~0; 947#L326 assume ~id3~0 != ~id4~0; 933#L327 assume ~id3~0 != ~id5~0; 934#L328 assume ~id3~0 != ~id6~0; 963#L329 assume ~id4~0 != ~id5~0; 964#L330 assume ~id4~0 != ~id6~0; 914#L331 assume ~id5~0 != ~id6~0;init_~tmp~0#1 := 1; 915#L291-1 init_#res#1 := init_~tmp~0#1; 983#L456 main_#t~ret47#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret47#1;havoc main_#t~ret47#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; 973#L22 assume !(0 == assume_abort_if_not_~cond#1); 974#L21 assume { :end_inline_assume_abort_if_not } true;~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;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~nomsg~0;~p6_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 935#L532-2 [2021-12-15 17:22:56,419 INFO L793 eck$LassoCheckResult]: Loop: 935#L532-2 assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_#t~ite5#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 936#L84 assume !(0 != ~mode1~0 % 256); 928#L105 assume !(0 != ~alive1~0 % 256); 930#L108 assume !(~send1~0 != ~id1~0); 939#L108-2 ~mode1~0 := 1; 945#L84-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite6#1, node2_#t~ite7#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 946#L122 assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 982#L125 assume !(node2_~m2~0#1 != ~nomsg~0); 937#L125-1 ~mode2~0 := 0; 938#L122-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite8#1, node3_#t~ite9#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 1027#L156 assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 1009#L159 assume !(node3_~m3~0#1 != ~nomsg~0); 923#L159-1 ~mode3~0 := 0; 968#L156-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite10#1, node4_#t~ite11#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 969#L190 assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 991#L193 assume !(node4_~m4~0#1 != ~nomsg~0); 993#L193-1 ~mode4~0 := 0; 1025#L190-2 assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_#t~ite12#1, node5_#t~ite13#1, node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0; 1013#L224 assume 0 != ~mode5~0 % 256;node5_~m5~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 1014#L227 assume !(node5_~m5~0#1 != ~nomsg~0); 931#L227-1 ~mode5~0 := 0; 932#L224-2 assume { :end_inline_node5 } true;assume { :begin_inline_node6 } true;havoc node6_#t~ite14#1, node6_#t~ite15#1, node6_~m6~0#1;havoc node6_~m6~0#1;node6_~m6~0#1 := ~nomsg~0; 956#L258 assume 0 != ~mode6~0 % 256;node6_~m6~0#1 := ~p5_old~0;~p5_old~0 := ~nomsg~0; 958#L261 assume !(node6_~m6~0#1 != ~nomsg~0); 921#L261-1 ~mode6~0 := 0; 897#L258-2 assume { :end_inline_node6 } true;~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;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;~p6_old~0 := ~p6_new~0;~p6_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 1008#L464 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 + ~st6~0 <= 1; 1028#L465 assume ~r1~0 % 256 < 6;check_~tmp~1#1 := 1; 959#L464-1 check_#res#1 := check_~tmp~1#1; 960#L476 main_#t~ret48#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret48#1;havoc main_#t~ret48#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 925#L564 assume !(0 == assert_~arg#1 % 256); 926#L559 assume { :end_inline_assert } true; 935#L532-2 [2021-12-15 17:22:56,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:56,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1766357374, now seen corresponding path program 2 times [2021-12-15 17:22:56,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:56,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771991585] [2021-12-15 17:22:56,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:56,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:56,434 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:22:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:56,453 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:22:56,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:56,454 INFO L85 PathProgramCache]: Analyzing trace with hash 986038564, now seen corresponding path program 1 times [2021-12-15 17:22:56,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:56,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854592567] [2021-12-15 17:22:56,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:56,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:56,466 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:22:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:56,475 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:22:56,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:56,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1952775259, now seen corresponding path program 1 times [2021-12-15 17:22:56,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:56,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992808820] [2021-12-15 17:22:56,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:56,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:22:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 17:22:56,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:22:56,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992808820] [2021-12-15 17:22:56,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992808820] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:22:56,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:22:56,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 17:22:56,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483244670] [2021-12-15 17:22:56,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:22:57,303 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.synthesize(LassoCheck.java:548) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkLoopTermination(LassoCheck.java:944) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:834) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 17:22:57,309 INFO L158 Benchmark]: Toolchain (without parser) took 2925.20ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 56.3MB in the beginning and 69.7MB in the end (delta: -13.4MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2021-12-15 17:22:57,309 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 73.4MB. Free memory is still 34.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:22:57,309 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.31ms. Allocated memory is still 88.1MB. Free memory was 56.0MB in the beginning and 59.0MB in the end (delta: -3.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 17:22:57,310 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.97ms. Allocated memory is still 88.1MB. Free memory was 59.0MB in the beginning and 56.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 17:22:57,310 INFO L158 Benchmark]: Boogie Preprocessor took 58.08ms. Allocated memory is still 88.1MB. Free memory was 56.1MB in the beginning and 54.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 17:22:57,310 INFO L158 Benchmark]: RCFGBuilder took 521.01ms. Allocated memory is still 88.1MB. Free memory was 53.7MB in the beginning and 29.6MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-15 17:22:57,310 INFO L158 Benchmark]: BuchiAutomizer took 1919.04ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 29.1MB in the beginning and 69.7MB in the end (delta: -40.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 17:22:57,312 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 73.4MB. Free memory is still 34.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 378.31ms. Allocated memory is still 88.1MB. Free memory was 56.0MB in the beginning and 59.0MB in the end (delta: -3.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.97ms. Allocated memory is still 88.1MB. Free memory was 59.0MB in the beginning and 56.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.08ms. Allocated memory is still 88.1MB. Free memory was 56.1MB in the beginning and 54.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 521.01ms. Allocated memory is still 88.1MB. Free memory was 53.7MB in the beginning and 29.6MB in the end (delta: 24.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * BuchiAutomizer took 1919.04ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 29.1MB in the beginning and 69.7MB in the end (delta: -40.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 17:22:57,345 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable