./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/psyco/psyco_abp_1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b 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_1-1.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 39adc6d5c92d5d4be7746cac0afbcc96f3b450588f18f3eb2d03a3ab1e20a3ef --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 23:23:18,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 23:23:18,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 23:23:18,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 23:23:18,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 23:23:18,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 23:23:18,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 23:23:18,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 23:23:18,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 23:23:18,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 23:23:18,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 23:23:18,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 23:23:18,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 23:23:18,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 23:23:18,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 23:23:18,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 23:23:18,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 23:23:18,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 23:23:18,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 23:23:18,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 23:23:18,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 23:23:18,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 23:23:18,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 23:23:18,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 23:23:18,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 23:23:18,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 23:23:18,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 23:23:18,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 23:23:18,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 23:23:18,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 23:23:18,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 23:23:18,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 23:23:18,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 23:23:18,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 23:23:18,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 23:23:18,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 23:23:18,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 23:23:18,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 23:23:18,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 23:23:18,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 23:23:18,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 23:23:18,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-14 23:23:18,395 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 23:23:18,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 23:23:18,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 23:23:18,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 23:23:18,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 23:23:18,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 23:23:18,398 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 23:23:18,399 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 23:23:18,399 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 23:23:18,399 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 23:23:18,400 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 23:23:18,400 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 23:23:18,400 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 23:23:18,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 23:23:18,400 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 23:23:18,400 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 23:23:18,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 23:23:18,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 23:23:18,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 23:23:18,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 23:23:18,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 23:23:18,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 23:23:18,402 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 23:23:18,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 23:23:18,402 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 23:23:18,402 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 23:23:18,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 23:23:18,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 23:23:18,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 23:23:18,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 23:23:18,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 23:23:18,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 23:23:18,405 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 23:23:18,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39adc6d5c92d5d4be7746cac0afbcc96f3b450588f18f3eb2d03a3ab1e20a3ef [2021-12-14 23:23:18,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 23:23:18,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 23:23:18,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 23:23:18,699 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 23:23:18,699 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 23:23:18,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_abp_1-1.c [2021-12-14 23:23:18,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5021585e8/0cfd69eae563410dbf8eaa5b719375ff/FLAG1c1fb2015 [2021-12-14 23:23:19,195 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 23:23:19,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_abp_1-1.c [2021-12-14 23:23:19,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5021585e8/0cfd69eae563410dbf8eaa5b719375ff/FLAG1c1fb2015 [2021-12-14 23:23:19,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5021585e8/0cfd69eae563410dbf8eaa5b719375ff [2021-12-14 23:23:19,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 23:23:19,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 23:23:19,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 23:23:19,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 23:23:19,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 23:23:19,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:23:19" (1/1) ... [2021-12-14 23:23:19,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@175d0a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:19, skipping insertion in model container [2021-12-14 23:23:19,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:23:19" (1/1) ... [2021-12-14 23:23:19,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 23:23:19,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 23:23:20,006 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_1-1.c[24818,24831] [2021-12-14 23:23:20,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:23:20,022 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 23:23:20,072 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_1-1.c[24818,24831] [2021-12-14 23:23:20,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:23:20,086 INFO L208 MainTranslator]: Completed translation [2021-12-14 23:23:20,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:20 WrapperNode [2021-12-14 23:23:20,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 23:23:20,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 23:23:20,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 23:23:20,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 23:23:20,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:20" (1/1) ... [2021-12-14 23:23:20,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:20" (1/1) ... [2021-12-14 23:23:20,158 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 377 [2021-12-14 23:23:20,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 23:23:20,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 23:23:20,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 23:23:20,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 23:23:20,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:20" (1/1) ... [2021-12-14 23:23:20,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:20" (1/1) ... [2021-12-14 23:23:20,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:20" (1/1) ... [2021-12-14 23:23:20,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:20" (1/1) ... [2021-12-14 23:23:20,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:20" (1/1) ... [2021-12-14 23:23:20,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:20" (1/1) ... [2021-12-14 23:23:20,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:20" (1/1) ... [2021-12-14 23:23:20,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 23:23:20,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 23:23:20,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 23:23:20,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 23:23:20,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:20" (1/1) ... [2021-12-14 23:23:20,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:23:20,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:23:20,261 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) [2021-12-14 23:23:20,277 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 [2021-12-14 23:23:20,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 23:23:20,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 23:23:20,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 23:23:20,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 23:23:20,383 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 23:23:20,385 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 23:23:21,057 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 23:23:21,065 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 23:23:21,067 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 23:23:21,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:23:21 BoogieIcfgContainer [2021-12-14 23:23:21,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 23:23:21,071 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 23:23:21,072 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 23:23:21,074 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 23:23:21,075 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:23:21,075 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 11:23:19" (1/3) ... [2021-12-14 23:23:21,076 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1182c224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:23:21, skipping insertion in model container [2021-12-14 23:23:21,076 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:23:21,076 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:23:20" (2/3) ... [2021-12-14 23:23:21,077 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1182c224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:23:21, skipping insertion in model container [2021-12-14 23:23:21,077 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:23:21,077 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:23:21" (3/3) ... [2021-12-14 23:23:21,078 INFO L388 chiAutomizerObserver]: Analyzing ICFG psyco_abp_1-1.c [2021-12-14 23:23:21,110 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 23:23:21,111 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 23:23:21,111 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 23:23:21,111 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 23:23:21,111 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 23:23:21,111 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 23:23:21,111 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 23:23:21,111 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 23:23:21,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 109 states, 108 states have (on average 1.9444444444444444) internal successors, (210), 108 states have internal predecessors, (210), 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) [2021-12-14 23:23:21,143 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 76 [2021-12-14 23:23:21,144 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:23:21,144 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:23:21,149 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:23:21,150 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:23:21,150 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 23:23:21,151 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 109 states, 108 states have (on average 1.9444444444444444) internal successors, (210), 108 states have internal predecessors, (210), 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) [2021-12-14 23:23:21,156 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 76 [2021-12-14 23:23:21,156 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:23:21,156 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:23:21,157 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:23:21,157 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:23:21,162 INFO L791 eck$LassoCheckResult]: Stem: 97#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; 28#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 [2021-12-14 23:23:21,162 INFO L793 eck$LassoCheckResult]: Loop: 46#L26-2true goto; 48#L563true 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; 76#L40true assume !(main_~this_expect~0#1 > 16); 33#L40-2true assume !(0 == main_~q~0#1); 111#L65true assume !(1 == main_~q~0#1); 6#L165true assume !(2 == main_~q~0#1); 56#L265true assume !(3 == main_~q~0#1); 38#L365true assume !(4 == main_~q~0#1); 105#L465true assume !(5 == main_~q~0#1); 46#L26-2true [2021-12-14 23:23:21,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:23:21,167 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-14 23:23:21,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:23:21,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708810040] [2021-12-14 23:23:21,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:23:21,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:23:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:23:21,246 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:23:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:23:21,280 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:23:21,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:23:21,283 INFO L85 PathProgramCache]: Analyzing trace with hash 2073703402, now seen corresponding path program 1 times [2021-12-14 23:23:21,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:23:21,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064419805] [2021-12-14 23:23:21,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:23:21,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:23:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:23:21,299 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:23:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:23:21,319 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:23:21,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:23:21,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2006272616, now seen corresponding path program 1 times [2021-12-14 23:23:21,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:23:21,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123533938] [2021-12-14 23:23:21,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:23:21,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:23:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:23:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:23:21,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:23:21,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123533938] [2021-12-14 23:23:21,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123533938] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:23:21,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:23:21,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:23:21,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317842503] [2021-12-14 23:23:21,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:23:21,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:23:21,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:23:21,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:23:21,537 INFO L87 Difference]: Start difference. First operand has 109 states, 108 states have (on average 1.9444444444444444) internal successors, (210), 108 states have internal predecessors, (210), 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 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-12-14 23:23:21,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:23:21,608 INFO L93 Difference]: Finished difference Result 113 states and 210 transitions. [2021-12-14 23:23:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:23:21,614 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 113 states and 210 transitions. [2021-12-14 23:23:21,617 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2021-12-14 23:23:21,620 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 113 states to 82 states and 125 transitions. [2021-12-14 23:23:21,621 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2021-12-14 23:23:21,621 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 82 [2021-12-14 23:23:21,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 125 transitions. [2021-12-14 23:23:21,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:23:21,637 INFO L681 BuchiCegarLoop]: Abstraction has 82 states and 125 transitions. [2021-12-14 23:23:21,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states and 125 transitions. [2021-12-14 23:23:21,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-12-14 23:23:21,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 82 states have (on average 1.524390243902439) internal successors, (125), 81 states have internal predecessors, (125), 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) [2021-12-14 23:23:21,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 125 transitions. [2021-12-14 23:23:21,663 INFO L704 BuchiCegarLoop]: Abstraction has 82 states and 125 transitions. [2021-12-14 23:23:21,663 INFO L587 BuchiCegarLoop]: Abstraction has 82 states and 125 transitions. [2021-12-14 23:23:21,663 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 23:23:21,663 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 82 states and 125 transitions. [2021-12-14 23:23:21,664 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2021-12-14 23:23:21,664 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:23:21,664 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:23:21,665 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-14 23:23:21,665 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 23:23:21,665 INFO L791 eck$LassoCheckResult]: Stem: 301#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; 288#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; 289#L26-2 goto; 255#L563 [2021-12-14 23:23:21,665 INFO L793 eck$LassoCheckResult]: Loop: 255#L563 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; 277#L40 assume !(main_~this_expect~0#1 > 16); 278#L40-2 assume 0 == main_~q~0#1; 254#L46 assume !(0 != main_#t~nondet13#1);havoc main_#t~nondet13#1; 255#L563 [2021-12-14 23:23:21,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:23:21,666 INFO L85 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2021-12-14 23:23:21,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:23:21,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343267178] [2021-12-14 23:23:21,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:23:21,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:23:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:23:21,690 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:23:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:23:21,700 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:23:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:23:21,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1267254, now seen corresponding path program 1 times [2021-12-14 23:23:21,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:23:21,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949792868] [2021-12-14 23:23:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:23:21,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:23:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:23:21,707 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:23:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:23:21,713 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:23:21,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:23:21,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1805953496, now seen corresponding path program 1 times [2021-12-14 23:23:21,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:23:21,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111982134] [2021-12-14 23:23:21,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:23:21,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:23:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:23:21,727 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:23:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:23:21,748 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:23:22,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 11:23:22 BoogieIcfgContainer [2021-12-14 23:23:22,117 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 23:23:22,117 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 23:23:22,117 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 23:23:22,117 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 23:23:22,118 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:23:21" (3/4) ... [2021-12-14 23:23:22,120 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-14 23:23:22,163 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 23:23:22,167 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 23:23:22,168 INFO L158 Benchmark]: Toolchain (without parser) took 2427.15ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 71.5MB in the beginning and 73.7MB in the end (delta: -2.2MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2021-12-14 23:23:22,169 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:23:22,169 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.47ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 71.5MB in the beginning and 97.8MB in the end (delta: -26.3MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-12-14 23:23:22,171 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.41ms. Allocated memory is still 130.0MB. Free memory was 97.8MB in the beginning and 93.2MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-14 23:23:22,172 INFO L158 Benchmark]: Boogie Preprocessor took 44.32ms. Allocated memory is still 130.0MB. Free memory was 93.2MB in the beginning and 90.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:23:22,173 INFO L158 Benchmark]: RCFGBuilder took 865.82ms. Allocated memory is still 130.0MB. Free memory was 90.6MB in the beginning and 94.4MB in the end (delta: -3.7MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2021-12-14 23:23:22,173 INFO L158 Benchmark]: BuchiAutomizer took 1045.32ms. Allocated memory is still 130.0MB. Free memory was 94.4MB in the beginning and 75.7MB in the end (delta: 18.7MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2021-12-14 23:23:22,173 INFO L158 Benchmark]: Witness Printer took 50.33ms. Allocated memory is still 130.0MB. Free memory was 75.7MB in the beginning and 73.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:23:22,175 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.47ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 71.5MB in the beginning and 97.8MB in the end (delta: -26.3MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.41ms. Allocated memory is still 130.0MB. Free memory was 97.8MB in the beginning and 93.2MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.32ms. Allocated memory is still 130.0MB. Free memory was 93.2MB in the beginning and 90.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 865.82ms. Allocated memory is still 130.0MB. Free memory was 90.6MB in the beginning and 94.4MB in the end (delta: -3.7MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1045.32ms. Allocated memory is still 130.0MB. Free memory was 94.4MB in the beginning and 75.7MB in the end (delta: 18.7MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * Witness Printer took 50.33ms. Allocated memory is still 130.0MB. Free memory was 75.7MB in the beginning and 73.7MB 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 82 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 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 82 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 362 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 158 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 204 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=11, m_Protocol=1, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f170437=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a950754=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@64750443=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@561711e4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10a6cbb9=0, P4=17, method_id=0, P3=9, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3246961b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69b45f91=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5f619104=13, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@54a243b3=17, q=0, P2=13, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@64922ce3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@240ba06b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@735643a3=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@658fe445=14, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@384d66df=0, m_recv_ack_1_2=7, P1=8, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12d92ec6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@33aeea39=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@33b08e5f=0, m_msg_1_1=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69e697cd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27cf51fd=0, P9=18, m_recv_ack_2=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@11e1bfde=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6162bf0f=0, P8=14, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@541d04b6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22541499=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73cee7e0=0, this_expect=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@75370236=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@30168328=10, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@bf9461d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ea7aa8b=9, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@632cc7f8=11, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@86e7f8=8, m_msg_2=2, this_buffer_empty=0, P7=15, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6019ec0b=18, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66c54ddd=0, m_msg_1_2=5, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@77234bce=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23f68453=15, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7526f552=0, m_recv_ack_1_1=6, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f5c901f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7f49e234=0, P6=10, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4630474e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73d1f83e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4adf13f1=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] int this_expect = 0; [L23] 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(); [L40] COND FALSE !(this_expect > 16) [L45] COND TRUE q == 0 [L46] COND FALSE !(__VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-14 23:23:22,224 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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)