./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/psyco/psyco_abp_1-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ff03de63 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/psyco/psyco_abp_1-3.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 041b6fdf6940cdc60d0f8513696cf56c45d5af72c3bd8ce1d60d3ac14fc6f3dc --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 22:19:36,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 22:19:36,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 22:19:36,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 22:19:36,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 22:19:36,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 22:19:36,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 22:19:36,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 22:19:36,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 22:19:36,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 22:19:36,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 22:19:36,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 22:19:36,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 22:19:36,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 22:19:36,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 22:19:36,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 22:19:36,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 22:19:36,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 22:19:36,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 22:19:36,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 22:19:36,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 22:19:36,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 22:19:36,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 22:19:36,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 22:19:36,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 22:19:36,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 22:19:36,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 22:19:36,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 22:19:36,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 22:19:36,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 22:19:36,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 22:19:36,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 22:19:36,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 22:19:36,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 22:19:36,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 22:19:36,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 22:19:36,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 22:19:36,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 22:19:36,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 22:19:36,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 22:19:36,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 22:19:36,149 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-21 22:19:36,183 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 22:19:36,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 22:19:36,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 22:19:36,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 22:19:36,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 22:19:36,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 22:19:36,186 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 22:19:36,186 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 22:19:36,186 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 22:19:36,186 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 22:19:36,187 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 22:19:36,188 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 22:19:36,188 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 22:19:36,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 22:19:36,188 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 22:19:36,188 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 22:19:36,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 22:19:36,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 22:19:36,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 22:19:36,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 22:19:36,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 22:19:36,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 22:19:36,190 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 22:19:36,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 22:19:36,191 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 22:19:36,192 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 22:19:36,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 22:19:36,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 22:19:36,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 22:19:36,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 22:19:36,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 22:19:36,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 22:19:36,194 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 22:19:36,194 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 041b6fdf6940cdc60d0f8513696cf56c45d5af72c3bd8ce1d60d3ac14fc6f3dc [2021-12-21 22:19:36,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 22:19:36,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 22:19:36,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 22:19:36,460 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 22:19:36,461 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 22:19:36,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_abp_1-3.c [2021-12-21 22:19:36,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adbf802f4/4ad95e9a0fb14a039f6b0b35eccb676c/FLAG62bfa4470 [2021-12-21 22:19:36,968 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 22:19:36,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_abp_1-3.c [2021-12-21 22:19:36,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adbf802f4/4ad95e9a0fb14a039f6b0b35eccb676c/FLAG62bfa4470 [2021-12-21 22:19:37,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adbf802f4/4ad95e9a0fb14a039f6b0b35eccb676c [2021-12-21 22:19:37,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 22:19:37,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 22:19:37,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 22:19:37,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 22:19:37,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 22:19:37,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:19:37" (1/1) ... [2021-12-21 22:19:37,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e08df49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:19:37, skipping insertion in model container [2021-12-21 22:19:37,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:19:37" (1/1) ... [2021-12-21 22:19:37,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 22:19:37,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 22:19:37,597 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/psyco/psyco_abp_1-3.c[24720,24733] [2021-12-21 22:19:37,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:19:37,611 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 22:19:37,666 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/psyco/psyco_abp_1-3.c[24720,24733] [2021-12-21 22:19:37,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:19:37,679 INFO L208 MainTranslator]: Completed translation [2021-12-21 22:19:37,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:19:37 WrapperNode [2021-12-21 22:19:37,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 22:19:37,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 22:19:37,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 22:19:37,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 22:19:37,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:19:37" (1/1) ... [2021-12-21 22:19:37,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:19:37" (1/1) ... [2021-12-21 22:19:37,785 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 375 [2021-12-21 22:19:37,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 22:19:37,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 22:19:37,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 22:19:37,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 22:19:37,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:19:37" (1/1) ... [2021-12-21 22:19:37,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:19:37" (1/1) ... [2021-12-21 22:19:37,810 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:19:37" (1/1) ... [2021-12-21 22:19:37,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:19:37" (1/1) ... [2021-12-21 22:19:37,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:19:37" (1/1) ... [2021-12-21 22:19:37,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:19:37" (1/1) ... [2021-12-21 22:19:37,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:19:37" (1/1) ... [2021-12-21 22:19:37,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 22:19:37,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 22:19:37,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 22:19:37,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 22:19:37,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:19:37" (1/1) ... [2021-12-21 22:19:37,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:19:37,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:19:37,909 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) [2021-12-21 22:19:37,932 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 [2021-12-21 22:19:37,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 22:19:37,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 22:19:37,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 22:19:37,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 22:19:38,035 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 22:19:38,037 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 22:19:38,603 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 22:19:38,609 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 22:19:38,612 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 22:19:38,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:19:38 BoogieIcfgContainer [2021-12-21 22:19:38,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 22:19:38,617 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 22:19:38,617 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 22:19:38,620 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 22:19:38,620 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:19:38,621 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 10:19:37" (1/3) ... [2021-12-21 22:19:38,622 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b2f48ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:19:38, skipping insertion in model container [2021-12-21 22:19:38,622 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:19:38,622 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:19:37" (2/3) ... [2021-12-21 22:19:38,623 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b2f48ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:19:38, skipping insertion in model container [2021-12-21 22:19:38,623 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:19:38,623 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:19:38" (3/3) ... [2021-12-21 22:19:38,624 INFO L388 chiAutomizerObserver]: Analyzing ICFG psyco_abp_1-3.c [2021-12-21 22:19:38,670 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 22:19:38,670 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 22:19:38,670 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 22:19:38,670 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 22:19:38,670 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 22:19:38,671 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 22:19:38,671 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 22:19:38,671 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 22:19:38,690 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 108 states, 107 states have (on average 1.9439252336448598) internal successors, (208), 107 states have internal predecessors, (208), 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) [2021-12-21 22:19:38,725 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 75 [2021-12-21 22:19:38,726 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:19:38,726 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:19:38,759 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-21 22:19:38,762 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:19:38,763 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 22:19:38,764 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 108 states, 107 states have (on average 1.9439252336448598) internal successors, (208), 107 states have internal predecessors, (208), 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) [2021-12-21 22:19:38,769 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 75 [2021-12-21 22:19:38,771 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:19:38,771 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:19:38,772 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-21 22:19:38,773 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:19:38,779 INFO L791 eck$LassoCheckResult]: Stem: 94#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(16, 2);call #Ultimate.allocInit(12, 3);~m_Protocol~0 := 1;~m_msg_2~0 := 2;~m_recv_ack_2~0 := 3;~m_msg_1_1~0 := 4;~m_msg_1_2~0 := 5;~m_recv_ack_1_1~0 := 6;~m_recv_ack_1_2~0 := 7; 32#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, 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~nondet39#1, main_#t~nondet40#1, main_#t~nondet41#1, main_#t~nondet42#1, main_#t~nondet43#1, main_~P1~0#1, main_~P2~0#1, main_~P3~0#1, main_~P4~0#1, main_~P5~0#1, main_~P6~0#1, main_~P7~0#1, main_~P8~0#1, main_~P9~0#1, main_~q~0#1, main_~method_id~0#1, main_~this_expect~0#1, main_~this_buffer_empty~0#1;main_~q~0#1 := 0;havoc main_~method_id~0#1;main_~this_expect~0#1 := 0;main_~this_buffer_empty~0#1 := 0; 46#L26-2true [2021-12-21 22:19:38,780 INFO L793 eck$LassoCheckResult]: Loop: 46#L26-2true goto; 34#L559true assume !false;main_~P1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~P2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~P3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~P4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;main_~P5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;main_~P6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;main_~P7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;main_~P8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;main_~P9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1; 21#L41true assume !(0 == main_~q~0#1); 54#L61true assume !(1 == main_~q~0#1); 13#L161true assume !(2 == main_~q~0#1); 110#L261true assume !(3 == main_~q~0#1); 58#L361true assume !(4 == main_~q~0#1); 5#L461true assume !(5 == main_~q~0#1); 46#L26-2true [2021-12-21 22:19:38,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:19:38,788 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-21 22:19:38,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:19:38,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313260348] [2021-12-21 22:19:38,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:19:38,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:19:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:19:38,876 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:19:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:19:38,913 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:19:38,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:19:38,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2021581594, now seen corresponding path program 1 times [2021-12-21 22:19:38,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:19:38,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078350251] [2021-12-21 22:19:38,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:19:38,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:19:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:19:38,933 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:19:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:19:38,950 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:19:38,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:19:38,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1331020120, now seen corresponding path program 1 times [2021-12-21 22:19:38,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:19:38,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574818586] [2021-12-21 22:19:38,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:19:38,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:19:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:19:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:19:39,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:19:39,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574818586] [2021-12-21 22:19:39,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574818586] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:19:39,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:19:39,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 22:19:39,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806734633] [2021-12-21 22:19:39,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:19:39,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:19:39,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 22:19:39,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 22:19:39,218 INFO L87 Difference]: Start difference. First operand has 108 states, 107 states have (on average 1.9439252336448598) internal successors, (208), 107 states have internal predecessors, (208), 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 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-12-21 22:19:39,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:19:39,322 INFO L93 Difference]: Finished difference Result 111 states and 201 transitions. [2021-12-21 22:19:39,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 22:19:39,328 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 201 transitions. [2021-12-21 22:19:39,338 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2021-12-21 22:19:39,344 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 80 states and 121 transitions. [2021-12-21 22:19:39,346 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 80 [2021-12-21 22:19:39,348 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 80 [2021-12-21 22:19:39,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 121 transitions. [2021-12-21 22:19:39,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:19:39,350 INFO L681 BuchiCegarLoop]: Abstraction has 80 states and 121 transitions. [2021-12-21 22:19:39,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states and 121 transitions. [2021-12-21 22:19:39,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-12-21 22:19:39,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 80 states have (on average 1.5125) internal successors, (121), 79 states have internal predecessors, (121), 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) [2021-12-21 22:19:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 121 transitions. [2021-12-21 22:19:39,375 INFO L704 BuchiCegarLoop]: Abstraction has 80 states and 121 transitions. [2021-12-21 22:19:39,375 INFO L587 BuchiCegarLoop]: Abstraction has 80 states and 121 transitions. [2021-12-21 22:19:39,375 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-21 22:19:39,376 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states and 121 transitions. [2021-12-21 22:19:39,377 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2021-12-21 22:19:39,377 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:19:39,377 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:19:39,377 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-21 22:19:39,377 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 22:19:39,378 INFO L791 eck$LassoCheckResult]: Stem: 304#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(16, 2);call #Ultimate.allocInit(12, 3);~m_Protocol~0 := 1;~m_msg_2~0 := 2;~m_recv_ack_2~0 := 3;~m_msg_1_1~0 := 4;~m_msg_1_2~0 := 5;~m_recv_ack_1_1~0 := 6;~m_recv_ack_1_2~0 := 7; 296#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, 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~nondet39#1, main_#t~nondet40#1, main_#t~nondet41#1, main_#t~nondet42#1, main_#t~nondet43#1, main_~P1~0#1, main_~P2~0#1, main_~P3~0#1, main_~P4~0#1, main_~P5~0#1, main_~P6~0#1, main_~P7~0#1, main_~P8~0#1, main_~P9~0#1, main_~q~0#1, main_~method_id~0#1, main_~this_expect~0#1, main_~this_buffer_empty~0#1;main_~q~0#1 := 0;havoc main_~method_id~0#1;main_~this_expect~0#1 := 0;main_~this_buffer_empty~0#1 := 0; 297#L26-2 goto; 302#L559 [2021-12-21 22:19:39,378 INFO L793 eck$LassoCheckResult]: Loop: 302#L559 assume !false;main_~P1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;main_~P2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~P3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~P4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;main_~P5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;main_~P6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;main_~P7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;main_~P8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;main_~P9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1; 279#L41 assume 0 == main_~q~0#1; 280#L42 assume !(0 != main_#t~nondet13#1);havoc main_#t~nondet13#1; 302#L559 [2021-12-21 22:19:39,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:19:39,378 INFO L85 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2021-12-21 22:19:39,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:19:39,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797477058] [2021-12-21 22:19:39,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:19:39,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:19:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:19:39,386 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:19:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:19:39,394 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:19:39,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:19:39,394 INFO L85 PathProgramCache]: Analyzing trace with hash 40826, now seen corresponding path program 1 times [2021-12-21 22:19:39,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:19:39,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10137804] [2021-12-21 22:19:39,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:19:39,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:19:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:19:39,399 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:19:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:19:39,402 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:19:39,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:19:39,403 INFO L85 PathProgramCache]: Analyzing trace with hash 889540504, now seen corresponding path program 1 times [2021-12-21 22:19:39,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:19:39,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601404263] [2021-12-21 22:19:39,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:19:39,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:19:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:19:39,411 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:19:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:19:39,422 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:19:39,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.12 10:19:39 BoogieIcfgContainer [2021-12-21 22:19:39,758 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-21 22:19:39,758 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 22:19:39,758 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 22:19:39,758 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 22:19:39,775 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:19:38" (3/4) ... [2021-12-21 22:19:39,778 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-21 22:19:39,821 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 22:19:39,823 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 22:19:39,827 INFO L158 Benchmark]: Toolchain (without parser) took 2499.87ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 56.8MB in the beginning and 68.9MB in the end (delta: -12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 22:19:39,833 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 88.1MB. Free memory was 44.8MB in the beginning and 44.8MB in the end (delta: 47.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:19:39,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.95ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 56.5MB in the beginning and 77.6MB in the end (delta: -21.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 22:19:39,834 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.33ms. Allocated memory is still 109.1MB. Free memory was 77.6MB in the beginning and 73.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-21 22:19:39,834 INFO L158 Benchmark]: Boogie Preprocessor took 77.46ms. Allocated memory is still 109.1MB. Free memory was 73.4MB in the beginning and 70.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-21 22:19:39,835 INFO L158 Benchmark]: RCFGBuilder took 748.85ms. Allocated memory is still 109.1MB. Free memory was 70.4MB in the beginning and 39.0MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-12-21 22:19:39,835 INFO L158 Benchmark]: BuchiAutomizer took 1141.09ms. Allocated memory is still 109.1MB. Free memory was 38.4MB in the beginning and 70.9MB in the end (delta: -32.6MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2021-12-21 22:19:39,835 INFO L158 Benchmark]: Witness Printer took 68.01ms. Allocated memory is still 109.1MB. Free memory was 70.9MB in the beginning and 68.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:19:39,838 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 88.1MB. Free memory was 44.8MB in the beginning and 44.8MB in the end (delta: 47.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 367.95ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 56.5MB in the beginning and 77.6MB in the end (delta: -21.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.33ms. Allocated memory is still 109.1MB. Free memory was 77.6MB in the beginning and 73.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.46ms. Allocated memory is still 109.1MB. Free memory was 73.4MB in the beginning and 70.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 748.85ms. Allocated memory is still 109.1MB. Free memory was 70.4MB in the beginning and 39.0MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 1141.09ms. Allocated memory is still 109.1MB. Free memory was 38.4MB in the beginning and 70.9MB in the end (delta: -32.6MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * Witness Printer took 68.01ms. Allocated memory is still 109.1MB. Free memory was 70.9MB in the beginning and 68.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 80 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 80 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 348 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 151 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 197 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 26]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, P5=14, m_Protocol=1, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@67d7fcab=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4bcfe2d8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4075e025=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22589ed3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@68325a1=0, P4=9, method_id=0, P3=17, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f48fbb9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c64f3af=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@29c9a4=18, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@76632fa4=9, q=0, P2=18, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a068e88=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@401c4731=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@838ba56=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2057c690=8, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4692b68=0, m_recv_ack_1_2=7, P1=13, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4d70ed49=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2cd2548=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a17cf42=0, m_msg_1_1=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d525212=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@35c0bdf6=0, P9=15, m_recv_ack_2=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@19f444d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@26b12805=0, P8=8, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6d8fb75c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70629fa1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f4b52a5=0, this_expect=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7a27d42=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@45c4dae9=11, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48090154=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@77cfb4fa=17, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@bee56d9=14, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@144d27a6=13, m_msg_2=2, this_buffer_empty=0, P7=10, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@597614dd=15, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@78e752b6=0, m_msg_1_2=5, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@de31f8e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4fa6decf=10, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10b51eca=0, m_recv_ack_1_1=6, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2fdfdc6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@40fda545=0, P6=11, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@34eb6599=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@432f6fa1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@20cadbaf=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 26]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L7] int m_Protocol = 1; [L8] int m_msg_2 = 2; [L9] int m_recv_ack_2 = 3; [L10] int m_msg_1_1 = 4; [L11] int m_msg_1_2 = 5; [L12] int m_recv_ack_1_1 = 6; [L13] int m_recv_ack_1_2 = 7; [L18] int q = 0; [L19] int method_id; [L22] unsigned int this_expect = 0; [L23] unsigned int this_buffer_empty = 0; Loop: [L26] COND TRUE 1 [L29] int P1=__VERIFIER_nondet_int(); [L30] int P2=__VERIFIER_nondet_int(); [L31] int P3=__VERIFIER_nondet_int(); [L32] int P4=__VERIFIER_nondet_int(); [L33] int P5=__VERIFIER_nondet_int(); [L34] int P6=__VERIFIER_nondet_int(); [L35] int P7=__VERIFIER_nondet_int(); [L36] int P8=__VERIFIER_nondet_int(); [L37] int P9=__VERIFIER_nondet_int(); [L41] COND TRUE q == 0 [L42] COND FALSE !(__VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-21 22:19:39,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)