./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.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.5.2.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 ab4ce27c037a23a1acb050e4e5e47861985f2a45717e88488eff45dc32b3cf64 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 17:22:49,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 17:22:49,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 17:22:49,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 17:22:49,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 17:22:49,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 17:22:49,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 17:22:49,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 17:22:49,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 17:22:49,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 17:22:49,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 17:22:49,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 17:22:49,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 17:22:49,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 17:22:49,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 17:22:49,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 17:22:49,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 17:22:49,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 17:22:49,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 17:22:49,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 17:22:49,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 17:22:49,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 17:22:49,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 17:22:49,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 17:22:49,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 17:22:49,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 17:22:49,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 17:22:49,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 17:22:49,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 17:22:49,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 17:22:49,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 17:22:49,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 17:22:49,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 17:22:49,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 17:22:49,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 17:22:49,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 17:22:49,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 17:22:49,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 17:22:49,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 17:22:49,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 17:22:49,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 17:22:49,915 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-15 17:22:49,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 17:22:49,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 17:22:49,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 17:22:49,941 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 17:22:49,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 17:22:49,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 17:22:49,942 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 17:22:49,942 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 17:22:49,942 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 17:22:49,942 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 17:22:49,942 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 17:22:49,942 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 17:22:49,942 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 17:22:49,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 17:22:49,943 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 17:22:49,943 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 17:22:49,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 17:22:49,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 17:22:49,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 17:22:49,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 17:22:49,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 17:22:49,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 17:22:49,944 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 17:22:49,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 17:22:49,944 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 17:22:49,945 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 17:22:49,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 17:22:49,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 17:22:49,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 17:22:49,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 17:22:49,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 17:22:49,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 17:22:49,946 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 17:22:49,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab4ce27c037a23a1acb050e4e5e47861985f2a45717e88488eff45dc32b3cf64 [2021-12-15 17:22:50,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 17:22:50,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 17:22:50,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 17:22:50,198 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 17:22:50,199 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 17:22:50,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2021-12-15 17:22:50,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76f823164/bea002407bc248a483515caec508f916/FLAG5fe14ce79 [2021-12-15 17:22:50,660 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 17:22:50,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2021-12-15 17:22:50,674 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76f823164/bea002407bc248a483515caec508f916/FLAG5fe14ce79 [2021-12-15 17:22:50,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76f823164/bea002407bc248a483515caec508f916 [2021-12-15 17:22:50,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 17:22:50,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 17:22:50,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 17:22:50,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 17:22:50,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 17:22:50,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:22:50" (1/1) ... [2021-12-15 17:22:50,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32b47d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:50, skipping insertion in model container [2021-12-15 17:22:50,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:22:50" (1/1) ... [2021-12-15 17:22:50,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 17:22:50,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 17:22:51,017 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.5.2.ufo.UNBOUNDED.pals.c[12667,12680] [2021-12-15 17:22:51,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:22:51,030 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 17:22:51,089 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.5.2.ufo.UNBOUNDED.pals.c[12667,12680] [2021-12-15 17:22:51,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:22:51,104 INFO L208 MainTranslator]: Completed translation [2021-12-15 17:22:51,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:51 WrapperNode [2021-12-15 17:22:51,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 17:22:51,105 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 17:22:51,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 17:22:51,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 17:22:51,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:51" (1/1) ... [2021-12-15 17:22:51,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:51" (1/1) ... [2021-12-15 17:22:51,158 INFO L137 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 365 [2021-12-15 17:22:51,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 17:22:51,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 17:22:51,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 17:22:51,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 17:22:51,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:51" (1/1) ... [2021-12-15 17:22:51,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:51" (1/1) ... [2021-12-15 17:22:51,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:51" (1/1) ... [2021-12-15 17:22:51,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:51" (1/1) ... [2021-12-15 17:22:51,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:51" (1/1) ... [2021-12-15 17:22:51,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:51" (1/1) ... [2021-12-15 17:22:51,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:51" (1/1) ... [2021-12-15 17:22:51,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 17:22:51,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 17:22:51,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 17:22:51,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 17:22:51,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:51" (1/1) ... [2021-12-15 17:22:51,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:22:51,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:22:51,267 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 17:22:51,288 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 17:22:51,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 17:22:51,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 17:22:51,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 17:22:51,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 17:22:51,427 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 17:22:51,428 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 17:22:51,864 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 17:22:51,874 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 17:22:51,875 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 17:22:51,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:22:51 BoogieIcfgContainer [2021-12-15 17:22:51,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 17:22:51,879 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 17:22:51,879 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 17:22:51,882 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 17:22:51,883 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:22:51,883 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 05:22:50" (1/3) ... [2021-12-15 17:22:51,884 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@439c1b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:22:51, skipping insertion in model container [2021-12-15 17:22:51,884 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:22:51,884 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:22:51" (2/3) ... [2021-12-15 17:22:51,884 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@439c1b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:22:51, skipping insertion in model container [2021-12-15 17:22:51,884 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:22:51,885 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:22:51" (3/3) ... [2021-12-15 17:22:51,886 INFO L388 chiAutomizerObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c [2021-12-15 17:22:51,929 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 17:22:51,929 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 17:22:51,930 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 17:22:51,930 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 17:22:51,930 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 17:22:51,930 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 17:22:51,930 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 17:22:51,930 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 17:22:51,948 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 120 states, 119 states have (on average 1.6974789915966386) internal successors, (202), 119 states have internal predecessors, (202), 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 17:22:51,968 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 78 [2021-12-15 17:22:51,968 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:22:51,968 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:22:51,976 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:51,976 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] [2021-12-15 17:22:51,976 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 17:22:51,977 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 120 states, 119 states have (on average 1.6974789915966386) internal successors, (202), 119 states have internal predecessors, (202), 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 17:22:51,984 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 78 [2021-12-15 17:22:51,984 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:22:51,984 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:22:51,986 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 17:22:51,988 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] [2021-12-15 17:22:51,993 INFO L791 eck$LassoCheckResult]: Stem: 105#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(49, 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; 33#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, 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~ret39#1, main_#t~ret40#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~nondet13#1;havoc main_#t~nondet13#1;~id1~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~st1~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~send1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~mode1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~alive1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~id2~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~st2~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~send2~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~mode2~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~alive2~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~id3~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~st3~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~send3~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~mode3~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~alive3~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~id4~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~st4~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~send4~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~mode4~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~alive4~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~id5~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~st5~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~send5~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;~mode5~0 := main_#t~nondet37#1;havoc main_#t~nondet37#1;~alive5~0 := main_#t~nondet38#1;havoc main_#t~nondet38#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 59#L246true assume !(0 == ~r1~0 % 256);init_~tmp~0#1 := 0; 18#L246-1true init_#res#1 := init_~tmp~0#1; 15#L375true main_#t~ret39#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret39#1;havoc main_#t~ret39#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; 35#L22true assume !(0 == assume_abort_if_not_~cond#1); 91#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;main_~i2~0#1 := 0; 16#L444-2true [2021-12-15 17:22:51,993 INFO L793 eck$LassoCheckResult]: Loop: 16#L444-2true assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 63#L76true assume !(0 != ~mode1~0 % 256); 70#L97true assume !(0 != ~alive1~0 % 256); 110#L97-2true ~mode1~0 := 1; 109#L76-2true assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite5#1, node2_#t~ite6#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 19#L111true assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 47#L114true assume !(node2_~m2~0#1 != ~nomsg~0); 88#L114-1true ~mode2~0 := 0; 92#L111-2true assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite7#1, node3_#t~ite8#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 53#L145true assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 28#L148true assume !(node3_~m3~0#1 != ~nomsg~0); 100#L148-1true ~mode3~0 := 0; 48#L145-2true assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite9#1, node4_#t~ite10#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 113#L179true assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 94#L182true assume !(node4_~m4~0#1 != ~nomsg~0); 121#L182-1true ~mode4~0 := 0; 22#L179-2true assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_#t~ite11#1, node5_#t~ite12#1, node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0; 114#L213true assume 0 != ~mode5~0 % 256;node5_~m5~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 98#L216true assume !(node5_~m5~0#1 != ~nomsg~0); 55#L216-1true ~mode5~0 := 0; 13#L213-2true assume { :end_inline_node5 } 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;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 43#L383true assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 <= 1);check_~tmp~1#1 := 0; 10#L383-1true check_#res#1 := check_~tmp~1#1; 77#L395true main_#t~ret40#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret40#1;havoc main_#t~ret40#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; 111#L473true assume !(0 == assert_~arg#1 % 256); 107#L468true assume { :end_inline_assert } true; 16#L444-2true [2021-12-15 17:22:51,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:51,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1984313218, now seen corresponding path program 1 times [2021-12-15 17:22:52,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:52,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221155548] [2021-12-15 17:22:52,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:52,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:22:52,172 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 17:22:52,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:22:52,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221155548] [2021-12-15 17:22:52,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221155548] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:22:52,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:22:52,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:22:52,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338050505] [2021-12-15 17:22:52,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:22:52,180 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-15 17:22:52,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:52,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1558194385, now seen corresponding path program 1 times [2021-12-15 17:22:52,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:52,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579911665] [2021-12-15 17:22:52,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:52,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:22:52,330 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 17:22:52,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:22:52,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579911665] [2021-12-15 17:22:52,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579911665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:22:52,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:22:52,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:22:52,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719138085] [2021-12-15 17:22:52,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:22:52,337 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:22:52,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:22:52,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 17:22:52,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 17:22:52,371 INFO L87 Difference]: Start difference. First operand has 120 states, 119 states have (on average 1.6974789915966386) internal successors, (202), 119 states have internal predecessors, (202), 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 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 17:22:52,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:22:52,450 INFO L93 Difference]: Finished difference Result 119 states and 197 transitions. [2021-12-15 17:22:52,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 17:22:52,455 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 197 transitions. [2021-12-15 17:22:52,458 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2021-12-15 17:22:52,462 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 115 states and 162 transitions. [2021-12-15 17:22:52,463 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 115 [2021-12-15 17:22:52,463 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 115 [2021-12-15 17:22:52,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 162 transitions. [2021-12-15 17:22:52,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:22:52,464 INFO L681 BuchiCegarLoop]: Abstraction has 115 states and 162 transitions. [2021-12-15 17:22:52,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 162 transitions. [2021-12-15 17:22:52,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-12-15 17:22:52,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 115 states have (on average 1.4086956521739131) internal successors, (162), 114 states have internal predecessors, (162), 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 17:22:52,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 162 transitions. [2021-12-15 17:22:52,491 INFO L704 BuchiCegarLoop]: Abstraction has 115 states and 162 transitions. [2021-12-15 17:22:52,491 INFO L587 BuchiCegarLoop]: Abstraction has 115 states and 162 transitions. [2021-12-15 17:22:52,491 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-15 17:22:52,491 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 115 states and 162 transitions. [2021-12-15 17:22:52,493 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2021-12-15 17:22:52,493 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:22:52,493 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:22:52,494 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] [2021-12-15 17:22:52,494 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] [2021-12-15 17:22:52,495 INFO L791 eck$LassoCheckResult]: Stem: 370#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(49, 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; 315#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, 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~ret39#1, main_#t~ret40#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~nondet13#1;havoc main_#t~nondet13#1;~id1~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~st1~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~send1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~mode1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~alive1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~id2~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~st2~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~send2~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~mode2~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~alive2~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~id3~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~st3~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~send3~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~mode3~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~alive3~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~id4~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~st4~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~send4~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~mode4~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~alive4~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~id5~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~st5~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~send5~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;~mode5~0 := main_#t~nondet37#1;havoc main_#t~nondet37#1;~alive5~0 := main_#t~nondet38#1;havoc main_#t~nondet38#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 316#L246 assume 0 == ~r1~0 % 256; 342#L247 assume ~alive1~0 % 256 + ~alive2~0 % 256 + ~alive3~0 % 256 + ~alive4~0 % 256 + ~alive5~0 % 256 >= 1; 369#L248 assume ~id1~0 >= 0; 262#L249 assume 0 == ~st1~0; 263#L250 assume ~send1~0 == ~id1~0; 358#L251 assume 0 == ~mode1~0 % 256; 327#L252 assume ~id2~0 >= 0; 328#L253 assume 0 == ~st2~0; 334#L254 assume ~send2~0 == ~id2~0; 283#L255 assume 0 == ~mode2~0 % 256; 284#L256 assume ~id3~0 >= 0; 329#L257 assume 0 == ~st3~0; 308#L258 assume ~send3~0 == ~id3~0; 309#L259 assume 0 == ~mode3~0 % 256; 347#L260 assume ~id4~0 >= 0; 348#L261 assume 0 == ~st4~0; 336#L262 assume ~send4~0 == ~id4~0; 337#L263 assume 0 == ~mode4~0 % 256; 340#L264 assume ~id5~0 >= 0; 341#L265 assume 0 == ~st5~0; 270#L266 assume ~send5~0 == ~id5~0; 271#L267 assume 0 == ~mode5~0 % 256; 289#L268 assume ~id1~0 != ~id2~0; 290#L269 assume ~id1~0 != ~id3~0; 266#L270 assume ~id1~0 != ~id4~0; 267#L271 assume ~id1~0 != ~id5~0; 310#L272 assume ~id2~0 != ~id3~0; 319#L273 assume ~id2~0 != ~id4~0; 339#L274 assume ~id2~0 != ~id5~0; 364#L275 assume ~id3~0 != ~id4~0; 257#L276 assume ~id3~0 != ~id5~0; 258#L277 assume ~id4~0 != ~id5~0;init_~tmp~0#1 := 1; 285#L246-1 init_#res#1 := init_~tmp~0#1; 279#L375 main_#t~ret39#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret39#1;havoc main_#t~ret39#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; 280#L22 assume !(0 == assume_abort_if_not_~cond#1); 318#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;main_~i2~0#1 := 0; 281#L444-2 [2021-12-15 17:22:52,495 INFO L793 eck$LassoCheckResult]: Loop: 281#L444-2 assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 282#L76 assume !(0 != ~mode1~0 % 256); 350#L97 assume !(0 != ~alive1~0 % 256); 352#L97-2 ~mode1~0 := 1; 351#L76-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite5#1, node2_#t~ite6#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 286#L111 assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 288#L114 assume !(node2_~m2~0#1 != ~nomsg~0); 301#L114-1 ~mode2~0 := 0; 366#L111-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite7#1, node3_#t~ite8#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 338#L145 assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 306#L148 assume !(node3_~m3~0#1 != ~nomsg~0); 265#L148-1 ~mode3~0 := 0; 296#L145-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite9#1, node4_#t~ite10#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 333#L179 assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 367#L182 assume !(node4_~m4~0#1 != ~nomsg~0); 304#L182-1 ~mode4~0 := 0; 294#L179-2 assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_#t~ite11#1, node5_#t~ite12#1, node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0; 295#L213 assume 0 != ~mode5~0 % 256;node5_~m5~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 368#L216 assume !(node5_~m5~0#1 != ~nomsg~0); 293#L216-1 ~mode5~0 := 0; 275#L213-2 assume { :end_inline_node5 } 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;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 276#L383 assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 <= 1);check_~tmp~1#1 := 0; 268#L383-1 check_#res#1 := check_~tmp~1#1; 269#L395 main_#t~ret40#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret40#1;havoc main_#t~ret40#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; 359#L473 assume !(0 == assert_~arg#1 % 256); 371#L468 assume { :end_inline_assert } true; 281#L444-2 [2021-12-15 17:22:52,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:52,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1707437673, now seen corresponding path program 1 times [2021-12-15 17:22:52,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:52,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903073245] [2021-12-15 17:22:52,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:52,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:52,538 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:22:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:52,598 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:22:52,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:52,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1558194385, now seen corresponding path program 2 times [2021-12-15 17:22:52,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:52,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774946218] [2021-12-15 17:22:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:52,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:22:52,675 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 17:22:52,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:22:52,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774946218] [2021-12-15 17:22:52,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774946218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:22:52,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:22:52,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 17:22:52,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718850201] [2021-12-15 17:22:52,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:22:52,679 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-15 17:22:52,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 17:22:52,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 17:22:52,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 17:22:52,680 INFO L87 Difference]: Start difference. First operand 115 states and 162 transitions. cyclomatic complexity: 48 Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 17:22:52,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 17:22:52,732 INFO L93 Difference]: Finished difference Result 118 states and 164 transitions. [2021-12-15 17:22:52,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 17:22:52,733 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 164 transitions. [2021-12-15 17:22:52,736 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2021-12-15 17:22:52,738 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 115 states and 160 transitions. [2021-12-15 17:22:52,738 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 115 [2021-12-15 17:22:52,738 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 115 [2021-12-15 17:22:52,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 160 transitions. [2021-12-15 17:22:52,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-15 17:22:52,739 INFO L681 BuchiCegarLoop]: Abstraction has 115 states and 160 transitions. [2021-12-15 17:22:52,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 160 transitions. [2021-12-15 17:22:52,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-12-15 17:22:52,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 115 states have (on average 1.391304347826087) internal successors, (160), 114 states have internal predecessors, (160), 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 17:22:52,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 160 transitions. [2021-12-15 17:22:52,745 INFO L704 BuchiCegarLoop]: Abstraction has 115 states and 160 transitions. [2021-12-15 17:22:52,745 INFO L587 BuchiCegarLoop]: Abstraction has 115 states and 160 transitions. [2021-12-15 17:22:52,745 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-15 17:22:52,746 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 115 states and 160 transitions. [2021-12-15 17:22:52,747 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2021-12-15 17:22:52,747 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:22:52,747 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:22:52,748 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] [2021-12-15 17:22:52,748 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] [2021-12-15 17:22:52,748 INFO L791 eck$LassoCheckResult]: Stem: 615#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(49, 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; 560#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, 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~ret39#1, main_#t~ret40#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~nondet13#1;havoc main_#t~nondet13#1;~id1~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~st1~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~send1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~mode1~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~alive1~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~id2~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~st2~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~send2~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~mode2~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~alive2~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~id3~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~st3~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~send3~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~mode3~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~alive3~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~id4~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~st4~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~send4~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~mode4~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;~alive4~0 := main_#t~nondet33#1;havoc main_#t~nondet33#1;~id5~0 := main_#t~nondet34#1;havoc main_#t~nondet34#1;~st5~0 := main_#t~nondet35#1;havoc main_#t~nondet35#1;~send5~0 := main_#t~nondet36#1;havoc main_#t~nondet36#1;~mode5~0 := main_#t~nondet37#1;havoc main_#t~nondet37#1;~alive5~0 := main_#t~nondet38#1;havoc main_#t~nondet38#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 561#L246 assume 0 == ~r1~0 % 256; 587#L247 assume ~alive1~0 % 256 + ~alive2~0 % 256 + ~alive3~0 % 256 + ~alive4~0 % 256 + ~alive5~0 % 256 >= 1; 614#L248 assume ~id1~0 >= 0; 507#L249 assume 0 == ~st1~0; 508#L250 assume ~send1~0 == ~id1~0; 603#L251 assume 0 == ~mode1~0 % 256; 572#L252 assume ~id2~0 >= 0; 573#L253 assume 0 == ~st2~0; 579#L254 assume ~send2~0 == ~id2~0; 528#L255 assume 0 == ~mode2~0 % 256; 529#L256 assume ~id3~0 >= 0; 574#L257 assume 0 == ~st3~0; 553#L258 assume ~send3~0 == ~id3~0; 554#L259 assume 0 == ~mode3~0 % 256; 592#L260 assume ~id4~0 >= 0; 593#L261 assume 0 == ~st4~0; 581#L262 assume ~send4~0 == ~id4~0; 582#L263 assume 0 == ~mode4~0 % 256; 585#L264 assume ~id5~0 >= 0; 586#L265 assume 0 == ~st5~0; 515#L266 assume ~send5~0 == ~id5~0; 516#L267 assume 0 == ~mode5~0 % 256; 534#L268 assume ~id1~0 != ~id2~0; 535#L269 assume ~id1~0 != ~id3~0; 511#L270 assume ~id1~0 != ~id4~0; 512#L271 assume ~id1~0 != ~id5~0; 555#L272 assume ~id2~0 != ~id3~0; 564#L273 assume ~id2~0 != ~id4~0; 584#L274 assume ~id2~0 != ~id5~0; 609#L275 assume ~id3~0 != ~id4~0; 502#L276 assume ~id3~0 != ~id5~0; 503#L277 assume ~id4~0 != ~id5~0;init_~tmp~0#1 := 1; 530#L246-1 init_#res#1 := init_~tmp~0#1; 524#L375 main_#t~ret39#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret39#1;havoc main_#t~ret39#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; 525#L22 assume !(0 == assume_abort_if_not_~cond#1); 563#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;main_~i2~0#1 := 0; 526#L444-2 [2021-12-15 17:22:52,748 INFO L793 eck$LassoCheckResult]: Loop: 526#L444-2 assume !false;assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 527#L76 assume !(0 != ~mode1~0 % 256); 595#L97 assume !(0 != ~alive1~0 % 256); 597#L97-2 ~mode1~0 := 1; 596#L76-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite5#1, node2_#t~ite6#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 531#L111 assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 533#L114 assume !(node2_~m2~0#1 != ~nomsg~0); 546#L114-1 ~mode2~0 := 0; 611#L111-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite7#1, node3_#t~ite8#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 583#L145 assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 551#L148 assume !(node3_~m3~0#1 != ~nomsg~0); 510#L148-1 ~mode3~0 := 0; 541#L145-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite9#1, node4_#t~ite10#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 578#L179 assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 612#L182 assume !(node4_~m4~0#1 != ~nomsg~0); 549#L182-1 ~mode4~0 := 0; 539#L179-2 assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_#t~ite11#1, node5_#t~ite12#1, node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0; 540#L213 assume 0 != ~mode5~0 % 256;node5_~m5~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 613#L216 assume !(node5_~m5~0#1 != ~nomsg~0); 538#L216-1 ~mode5~0 := 0; 520#L213-2 assume { :end_inline_node5 } 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;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 521#L383 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 <= 1; 575#L384 assume ~r1~0 % 256 < 5;check_~tmp~1#1 := 1; 513#L383-1 check_#res#1 := check_~tmp~1#1; 514#L395 main_#t~ret40#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret40#1;havoc main_#t~ret40#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; 604#L473 assume !(0 == assert_~arg#1 % 256); 616#L468 assume { :end_inline_assert } true; 526#L444-2 [2021-12-15 17:22:52,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:52,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1707437673, now seen corresponding path program 2 times [2021-12-15 17:22:52,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:52,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227675677] [2021-12-15 17:22:52,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:52,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:52,783 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:22:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:52,820 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:22:52,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:52,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1442712738, now seen corresponding path program 1 times [2021-12-15 17:22:52,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:52,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865190404] [2021-12-15 17:22:52,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:52,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:52,833 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 17:22:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 17:22:52,846 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 17:22:52,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:22:52,846 INFO L85 PathProgramCache]: Analyzing trace with hash -80800760, now seen corresponding path program 1 times [2021-12-15 17:22:52,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:22:52,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233641621] [2021-12-15 17:22:52,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:22:52,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:22:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 17:22:52,925 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 17:22:52,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 17:22:52,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233641621] [2021-12-15 17:22:52,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233641621] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 17:22:52,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 17:22:52,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 17:22:52,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870807702] [2021-12-15 17:22:52,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 17:22:53,620 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 17:22:53,623 INFO L158 Benchmark]: Toolchain (without parser) took 2925.61ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 81.2MB in the beginning and 59.5MB in the end (delta: 21.7MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. [2021-12-15 17:22:53,624 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 77.6MB. Free memory was 37.3MB in the beginning and 37.3MB in the end (delta: 36.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:22:53,624 INFO L158 Benchmark]: CACSL2BoogieTranslator took 404.82ms. Allocated memory is still 113.2MB. Free memory was 81.0MB in the beginning and 85.0MB in the end (delta: -4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 17:22:53,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.64ms. Allocated memory is still 113.2MB. Free memory was 84.8MB in the beginning and 82.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 17:22:53,625 INFO L158 Benchmark]: Boogie Preprocessor took 54.55ms. Allocated memory is still 113.2MB. Free memory was 82.1MB in the beginning and 80.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 17:22:53,626 INFO L158 Benchmark]: RCFGBuilder took 659.46ms. Allocated memory is still 113.2MB. Free memory was 80.0MB in the beginning and 59.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-15 17:22:53,626 INFO L158 Benchmark]: BuchiAutomizer took 1743.02ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 59.0MB in the beginning and 59.5MB in the end (delta: -538.6kB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2021-12-15 17:22:53,629 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 77.6MB. Free memory was 37.3MB in the beginning and 37.3MB in the end (delta: 36.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 404.82ms. Allocated memory is still 113.2MB. Free memory was 81.0MB in the beginning and 85.0MB in the end (delta: -4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.64ms. Allocated memory is still 113.2MB. Free memory was 84.8MB in the beginning and 82.1MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.55ms. Allocated memory is still 113.2MB. Free memory was 82.1MB in the beginning and 80.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 659.46ms. Allocated memory is still 113.2MB. Free memory was 80.0MB in the beginning and 59.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * BuchiAutomizer took 1743.02ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 59.0MB in the beginning and 59.5MB in the end (delta: -538.6kB). Peak memory consumption was 24.4MB. 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 17:22:53,662 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