./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 ae007674 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-dev-ae00767 [2021-12-28 09:26:20,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 09:26:20,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 09:26:20,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 09:26:20,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 09:26:20,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 09:26:20,305 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 09:26:20,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 09:26:20,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 09:26:20,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 09:26:20,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 09:26:20,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 09:26:20,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 09:26:20,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 09:26:20,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 09:26:20,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 09:26:20,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 09:26:20,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 09:26:20,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 09:26:20,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 09:26:20,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 09:26:20,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 09:26:20,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 09:26:20,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 09:26:20,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 09:26:20,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 09:26:20,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 09:26:20,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 09:26:20,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 09:26:20,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 09:26:20,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 09:26:20,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 09:26:20,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 09:26:20,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 09:26:20,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 09:26:20,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 09:26:20,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 09:26:20,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 09:26:20,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 09:26:20,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 09:26:20,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 09:26:20,347 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-28 09:26:20,373 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 09:26:20,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 09:26:20,374 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 09:26:20,374 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 09:26:20,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 09:26:20,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 09:26:20,376 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 09:26:20,376 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-28 09:26:20,376 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-28 09:26:20,376 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-28 09:26:20,377 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-28 09:26:20,377 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-28 09:26:20,377 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-28 09:26:20,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 09:26:20,377 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 09:26:20,377 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 09:26:20,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 09:26:20,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 09:26:20,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 09:26:20,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-28 09:26:20,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-28 09:26:20,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-28 09:26:20,378 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 09:26:20,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 09:26:20,378 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-28 09:26:20,379 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 09:26:20,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-28 09:26:20,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 09:26:20,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 09:26:20,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 09:26:20,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 09:26:20,380 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-28 09:26:20,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39adc6d5c92d5d4be7746cac0afbcc96f3b450588f18f3eb2d03a3ab1e20a3ef [2021-12-28 09:26:20,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 09:26:20,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 09:26:20,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 09:26:20,658 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 09:26:20,658 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 09:26:20,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_abp_1-1.c [2021-12-28 09:26:20,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c70ca9c1/04e00c940ea645279d055471bfeb7193/FLAG5ecc7eaa8 [2021-12-28 09:26:21,137 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 09:26:21,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_abp_1-1.c [2021-12-28 09:26:21,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c70ca9c1/04e00c940ea645279d055471bfeb7193/FLAG5ecc7eaa8 [2021-12-28 09:26:21,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c70ca9c1/04e00c940ea645279d055471bfeb7193 [2021-12-28 09:26:21,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 09:26:21,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 09:26:21,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 09:26:21,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 09:26:21,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 09:26:21,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:26:21" (1/1) ... [2021-12-28 09:26:21,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ccf71e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:26:21, skipping insertion in model container [2021-12-28 09:26:21,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:26:21" (1/1) ... [2021-12-28 09:26:21,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 09:26:21,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 09:26:21,446 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] [2021-12-28 09:26:21,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:26:21,455 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 09:26:21,504 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] [2021-12-28 09:26:21,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:26:21,523 INFO L208 MainTranslator]: Completed translation [2021-12-28 09:26:21,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:26:21 WrapperNode [2021-12-28 09:26:21,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 09:26:21,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 09:26:21,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 09:26:21,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 09:26:21,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:26:21" (1/1) ... [2021-12-28 09:26:21,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:26:21" (1/1) ... [2021-12-28 09:26:21,583 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 377 [2021-12-28 09:26:21,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 09:26:21,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 09:26:21,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 09:26:21,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 09:26:21,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:26:21" (1/1) ... [2021-12-28 09:26:21,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:26:21" (1/1) ... [2021-12-28 09:26:21,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:26:21" (1/1) ... [2021-12-28 09:26:21,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:26:21" (1/1) ... [2021-12-28 09:26:21,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:26:21" (1/1) ... [2021-12-28 09:26:21,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:26:21" (1/1) ... [2021-12-28 09:26:21,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:26:21" (1/1) ... [2021-12-28 09:26:21,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 09:26:21,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 09:26:21,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 09:26:21,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 09:26:21,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:26:21" (1/1) ... [2021-12-28 09:26:21,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:26:21,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:26:21,658 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) [2021-12-28 09:26:21,663 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 [2021-12-28 09:26:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 09:26:21,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 09:26:21,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 09:26:21,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 09:26:21,745 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 09:26:21,746 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 09:26:22,207 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 09:26:22,212 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 09:26:22,214 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 09:26:22,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:26:22 BoogieIcfgContainer [2021-12-28 09:26:22,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 09:26:22,217 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-28 09:26:22,217 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-28 09:26:22,219 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-28 09:26:22,219 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:26:22,220 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:26:21" (1/3) ... [2021-12-28 09:26:22,220 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27b7765e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:26:22, skipping insertion in model container [2021-12-28 09:26:22,221 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:26:22,221 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:26:21" (2/3) ... [2021-12-28 09:26:22,221 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27b7765e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:26:22, skipping insertion in model container [2021-12-28 09:26:22,221 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:26:22,221 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:26:22" (3/3) ... [2021-12-28 09:26:22,222 INFO L388 chiAutomizerObserver]: Analyzing ICFG psyco_abp_1-1.c [2021-12-28 09:26:22,254 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-28 09:26:22,254 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-28 09:26:22,255 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-28 09:26:22,255 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-28 09:26:22,255 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-28 09:26:22,255 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-28 09:26:22,255 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-28 09:26:22,255 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-28 09:26:22,268 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) [2021-12-28 09:26:22,290 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 76 [2021-12-28 09:26:22,291 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:26:22,291 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:26:22,296 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:26:22,297 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:26:22,297 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-28 09:26:22,298 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) [2021-12-28 09:26:22,308 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 76 [2021-12-28 09:26:22,308 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:26:22,308 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:26:22,309 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:26:22,309 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:26:22,314 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 [2021-12-28 09:26:22,315 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 [2021-12-28 09:26:22,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:26:22,319 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-28 09:26:22,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:26:22,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040183679] [2021-12-28 09:26:22,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:26:22,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:26:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:26:22,381 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:26:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:26:22,410 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:26:22,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:26:22,412 INFO L85 PathProgramCache]: Analyzing trace with hash 2073703402, now seen corresponding path program 1 times [2021-12-28 09:26:22,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:26:22,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085126580] [2021-12-28 09:26:22,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:26:22,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:26:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:26:22,418 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:26:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:26:22,422 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:26:22,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:26:22,423 INFO L85 PathProgramCache]: Analyzing trace with hash 2006272616, now seen corresponding path program 1 times [2021-12-28 09:26:22,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:26:22,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476618370] [2021-12-28 09:26:22,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:26:22,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:26:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:26:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:26:22,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:26:22,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476618370] [2021-12-28 09:26:22,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476618370] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:26:22,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:26:22,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:26:22,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523271316] [2021-12-28 09:26:22,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:26:22,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:26:22,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:26:22,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:26:22,638 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) [2021-12-28 09:26:22,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:26:22,732 INFO L93 Difference]: Finished difference Result 113 states and 210 transitions. [2021-12-28 09:26:22,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:26:22,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 113 states and 210 transitions. [2021-12-28 09:26:22,745 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2021-12-28 09:26:22,748 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 113 states to 82 states and 125 transitions. [2021-12-28 09:26:22,749 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2021-12-28 09:26:22,750 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 82 [2021-12-28 09:26:22,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 125 transitions. [2021-12-28 09:26:22,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:26:22,752 INFO L681 BuchiCegarLoop]: Abstraction has 82 states and 125 transitions. [2021-12-28 09:26:22,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states and 125 transitions. [2021-12-28 09:26:22,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-12-28 09:26:22,775 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) [2021-12-28 09:26:22,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 125 transitions. [2021-12-28 09:26:22,777 INFO L704 BuchiCegarLoop]: Abstraction has 82 states and 125 transitions. [2021-12-28 09:26:22,777 INFO L587 BuchiCegarLoop]: Abstraction has 82 states and 125 transitions. [2021-12-28 09:26:22,777 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-28 09:26:22,778 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 82 states and 125 transitions. [2021-12-28 09:26:22,779 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2021-12-28 09:26:22,779 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:26:22,779 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:26:22,779 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-28 09:26:22,780 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:26:22,780 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 [2021-12-28 09:26:22,780 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 [2021-12-28 09:26:22,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:26:22,781 INFO L85 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2021-12-28 09:26:22,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:26:22,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787028311] [2021-12-28 09:26:22,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:26:22,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:26:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:26:22,799 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:26:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:26:22,807 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:26:22,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:26:22,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1267254, now seen corresponding path program 1 times [2021-12-28 09:26:22,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:26:22,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903137544] [2021-12-28 09:26:22,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:26:22,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:26:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:26:22,811 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:26:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:26:22,814 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:26:22,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:26:22,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1805953496, now seen corresponding path program 1 times [2021-12-28 09:26:22,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:26:22,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793824219] [2021-12-28 09:26:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:26:22,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:26:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:26:22,837 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:26:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:26:22,847 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:26:23,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.12 09:26:23 BoogieIcfgContainer [2021-12-28 09:26:23,066 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-28 09:26:23,067 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 09:26:23,067 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 09:26:23,067 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 09:26:23,067 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:26:22" (3/4) ... [2021-12-28 09:26:23,069 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-28 09:26:23,094 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 09:26:23,098 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 09:26:23,099 INFO L158 Benchmark]: Toolchain (without parser) took 1942.24ms. Allocated memory was 56.6MB in the beginning and 90.2MB in the end (delta: 33.6MB). Free memory was 35.2MB in the beginning and 63.3MB in the end (delta: -28.0MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-12-28 09:26:23,102 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory was 39.4MB in the beginning and 39.3MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:26:23,102 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.61ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 35.1MB in the beginning and 46.6MB in the end (delta: -11.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-28 09:26:23,103 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.30ms. Allocated memory is still 69.2MB. Free memory was 46.4MB in the beginning and 42.0MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-28 09:26:23,104 INFO L158 Benchmark]: Boogie Preprocessor took 49.31ms. Allocated memory is still 69.2MB. Free memory was 42.0MB in the beginning and 39.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 09:26:23,104 INFO L158 Benchmark]: RCFGBuilder took 581.26ms. Allocated memory is still 69.2MB. Free memory was 39.3MB in the beginning and 42.1MB in the end (delta: -2.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-28 09:26:23,104 INFO L158 Benchmark]: BuchiAutomizer took 849.63ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 41.8MB in the beginning and 65.2MB in the end (delta: -23.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-28 09:26:23,105 INFO L158 Benchmark]: Witness Printer took 31.56ms. Allocated memory is still 90.2MB. Free memory was 65.2MB in the beginning and 63.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 09:26:23,106 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory was 39.4MB in the beginning and 39.3MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 369.61ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 35.1MB in the beginning and 46.6MB in the end (delta: -11.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.30ms. Allocated memory is still 69.2MB. Free memory was 46.4MB in the beginning and 42.0MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.31ms. Allocated memory is still 69.2MB. Free memory was 42.0MB in the beginning and 39.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 581.26ms. Allocated memory is still 69.2MB. Free memory was 39.3MB in the beginning and 42.1MB in the end (delta: -2.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 849.63ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 41.8MB in the beginning and 65.2MB in the end (delta: -23.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 31.56ms. Allocated memory is still 90.2MB. Free memory was 65.2MB in the beginning and 63.3MB 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 0.8s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. 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, 0.0s 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=14, m_Protocol=1, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@711b707b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2fb60371=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@79a9495d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@77ba3839=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@40fbbfa0=0, P4=9, method_id=0, P3=17, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@96ed7aa=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43f00697=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7b3fb12a=18, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44a300b1=9, q=0, P2=18, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@57f58ccf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44ffc7e6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c154103=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53621485=8, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7b93a5f=0, m_recv_ack_1_2=7, P1=13, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73716f32=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3aacf4ba=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f5475cf=0, m_msg_1_1=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5afc6e2b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@592c945b=0, P9=15, m_recv_ack_2=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@57c6f14a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4bfcc10c=0, P8=8, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1d2f9a21=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7686218a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44be58e1=0, this_expect=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@23dce302=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1b2cdec1=11, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5cc23bf5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3d553ead=17, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1d1c8aa9=14, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70c53478=13, m_msg_2=2, this_buffer_empty=0, P7=10, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ad28582=15, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f27d9e5=0, m_msg_1_2=5, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a5a7f30=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f183b5f=10, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@43b90d59=0, m_recv_ack_1_1=6, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4ac5cd77=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b35fafb=0, P6=11, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@64bc1e63=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@19f997ad=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@d6c3b1=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! [2021-12-28 09:26:23,140 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)