./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/psyco/psyco_abp_1-1.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 747981090a474d9d2269aea1ffd03eef2ddc8848 .......................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-29 02:02:41,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 02:02:41,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 02:02:41,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 02:02:41,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 02:02:41,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 02:02:41,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 02:02:41,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 02:02:41,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 02:02:41,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 02:02:41,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 02:02:41,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 02:02:41,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 02:02:41,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 02:02:41,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 02:02:41,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 02:02:41,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 02:02:41,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 02:02:41,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 02:02:41,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 02:02:41,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 02:02:41,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 02:02:41,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 02:02:41,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 02:02:41,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 02:02:41,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 02:02:41,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 02:02:41,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 02:02:41,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 02:02:41,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 02:02:41,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 02:02:41,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 02:02:41,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 02:02:41,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 02:02:41,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 02:02:41,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 02:02:41,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 02:02:41,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 02:02:41,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 02:02:41,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 02:02:41,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 02:02:41,243 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-07-29 02:02:41,284 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 02:02:41,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 02:02:41,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 02:02:41,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 02:02:41,289 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 02:02:41,289 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-29 02:02:41,289 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-07-29 02:02:41,291 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-29 02:02:41,292 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-29 02:02:41,292 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-29 02:02:41,292 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-29 02:02:41,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 02:02:41,293 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 02:02:41,294 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 02:02:41,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 02:02:41,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 02:02:41,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 02:02:41,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-07-29 02:02:41,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-07-29 02:02:41,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-07-29 02:02:41,297 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 02:02:41,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 02:02:41,298 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-29 02:02:41,298 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 02:02:41,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-07-29 02:02:41,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 02:02:41,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 02:02:41,299 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-29 02:02:41,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 02:02:41,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 02:02:41,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 02:02:41,302 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-07-29 02:02:41,303 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-07-29 02:02:41,304 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> 747981090a474d9d2269aea1ffd03eef2ddc8848 [2020-07-29 02:02:41,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 02:02:41,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 02:02:41,659 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 02:02:41,660 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 02:02:41,661 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 02:02:41,662 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_abp_1-1.c [2020-07-29 02:02:41,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/992b9cc3a/a753567554dd47a096a10c2d43bfd568/FLAG0397eecad [2020-07-29 02:02:42,180 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 02:02:42,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_abp_1-1.c [2020-07-29 02:02:42,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/992b9cc3a/a753567554dd47a096a10c2d43bfd568/FLAG0397eecad [2020-07-29 02:02:42,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/992b9cc3a/a753567554dd47a096a10c2d43bfd568 [2020-07-29 02:02:42,507 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 02:02:42,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 02:02:42,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 02:02:42,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 02:02:42,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 02:02:42,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 02:02:42" (1/1) ... [2020-07-29 02:02:42,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a4db3af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:42, skipping insertion in model container [2020-07-29 02:02:42,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 02:02:42" (1/1) ... [2020-07-29 02:02:42,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 02:02:42,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 02:02:42,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 02:02:42,977 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 02:02:43,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 02:02:43,173 INFO L208 MainTranslator]: Completed translation [2020-07-29 02:02:43,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:43 WrapperNode [2020-07-29 02:02:43,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 02:02:43,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 02:02:43,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 02:02:43,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 02:02:43,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:43" (1/1) ... [2020-07-29 02:02:43,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:43" (1/1) ... [2020-07-29 02:02:43,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 02:02:43,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 02:02:43,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 02:02:43,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 02:02:43,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:43" (1/1) ... [2020-07-29 02:02:43,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:43" (1/1) ... [2020-07-29 02:02:43,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:43" (1/1) ... [2020-07-29 02:02:43,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:43" (1/1) ... [2020-07-29 02:02:43,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:43" (1/1) ... [2020-07-29 02:02:43,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:43" (1/1) ... [2020-07-29 02:02:43,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:43" (1/1) ... [2020-07-29 02:02:43,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 02:02:43,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 02:02:43,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 02:02:43,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 02:02:43,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-07-29 02:02:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 02:02:43,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 02:02:44,920 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 02:02:44,920 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-29 02:02:44,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:02:44 BoogieIcfgContainer [2020-07-29 02:02:44,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 02:02:44,934 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-29 02:02:44,934 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-29 02:02:44,938 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-29 02:02:44,940 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:02:44,941 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.07 02:02:42" (1/3) ... [2020-07-29 02:02:44,942 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6972f6da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 02:02:44, skipping insertion in model container [2020-07-29 02:02:44,942 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:02:44,943 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:43" (2/3) ... [2020-07-29 02:02:44,943 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6972f6da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 02:02:44, skipping insertion in model container [2020-07-29 02:02:44,944 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:02:44,944 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:02:44" (3/3) ... [2020-07-29 02:02:44,949 INFO L371 chiAutomizerObserver]: Analyzing ICFG psyco_abp_1-1.c [2020-07-29 02:02:45,008 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-29 02:02:45,008 INFO L357 BuchiCegarLoop]: Hoare is false [2020-07-29 02:02:45,009 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-29 02:02:45,009 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 02:02:45,009 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 02:02:45,010 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-29 02:02:45,010 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 02:02:45,010 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-29 02:02:45,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states. [2020-07-29 02:02:45,103 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 76 [2020-07-29 02:02:45,103 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:02:45,104 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:02:45,111 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-29 02:02:45,112 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-29 02:02:45,112 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-29 02:02:45,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states. [2020-07-29 02:02:45,127 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 76 [2020-07-29 02:02:45,128 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:02:45,128 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:02:45,128 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-29 02:02:45,129 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-29 02:02:45,137 INFO L794 eck$LassoCheckResult]: Stem: 77#ULTIMATE.startENTRYtrue ~m_Protocol~0 := 1;~m_msg_2~0 := 2;~m_recv_ack_2~0 := 3;~m_msg_1_1~0 := 4;~m_msg_1_2~0 := 5;~m_recv_ack_1_1~0 := 6;~m_recv_ack_1_2~0 := 7; 9#L-1true havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_~P1~0, main_~P2~0, main_~P3~0, main_~P4~0, main_~P5~0, main_~P6~0, main_~P7~0, main_~P8~0, main_~P9~0, main_~q~0, main_~method_id~0, main_~this_expect~0, main_~this_buffer_empty~0;main_~q~0 := 0;havoc main_~method_id~0;main_~this_expect~0 := 0;main_~this_buffer_empty~0 := 0; 104#L24-2true [2020-07-29 02:02:45,138 INFO L796 eck$LassoCheckResult]: Loop: 104#L24-2true goto; 92#L561true assume !false;main_~P1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~P2~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~P3~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~P4~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~P5~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~P6~0 := main_#t~nondet5;havoc main_#t~nondet5;main_~P7~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~P8~0 := main_#t~nondet7;havoc main_#t~nondet7;main_~P9~0 := main_#t~nondet8;havoc main_#t~nondet8; 82#L38true assume !(main_~this_expect~0 > 16); 95#L38-2true assume !(0 == main_~q~0); 88#L63true assume !(1 == main_~q~0); 51#L163true assume !(2 == main_~q~0); 6#L263true assume !(3 == main_~q~0); 86#L363true assume !(4 == main_~q~0); 54#L463true assume !(5 == main_~q~0); 104#L24-2true [2020-07-29 02:02:45,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:02:45,144 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-07-29 02:02:45,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:02:45,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274325953] [2020-07-29 02:02:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:02:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:45,238 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:45,246 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:45,267 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:02:45,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:02:45,269 INFO L82 PathProgramCache]: Analyzing trace with hash 2073703402, now seen corresponding path program 1 times [2020-07-29 02:02:45,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:02:45,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059908635] [2020-07-29 02:02:45,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:02:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:45,280 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:45,288 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:45,293 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:02:45,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:02:45,295 INFO L82 PathProgramCache]: Analyzing trace with hash 2006272616, now seen corresponding path program 1 times [2020-07-29 02:02:45,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:02:45,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613457310] [2020-07-29 02:02:45,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:02:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:02:45,381 INFO L280 TraceCheckUtils]: 0: Hoare triple {117#true} ~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; {117#true} is VALID [2020-07-29 02:02:45,383 INFO L280 TraceCheckUtils]: 1: Hoare triple {117#true} havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_~P1~0, main_~P2~0, main_~P3~0, main_~P4~0, main_~P5~0, main_~P6~0, main_~P7~0, main_~P8~0, main_~P9~0, main_~q~0, main_~method_id~0, main_~this_expect~0, main_~this_buffer_empty~0;main_~q~0 := 0;havoc main_~method_id~0;main_~this_expect~0 := 0;main_~this_buffer_empty~0 := 0; {119#(= 0 ULTIMATE.start_main_~q~0)} is VALID [2020-07-29 02:02:45,384 INFO L280 TraceCheckUtils]: 2: Hoare triple {119#(= 0 ULTIMATE.start_main_~q~0)} goto; {119#(= 0 ULTIMATE.start_main_~q~0)} is VALID [2020-07-29 02:02:45,385 INFO L280 TraceCheckUtils]: 3: Hoare triple {119#(= 0 ULTIMATE.start_main_~q~0)} assume !false;main_~P1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~P2~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~P3~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~P4~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~P5~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~P6~0 := main_#t~nondet5;havoc main_#t~nondet5;main_~P7~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~P8~0 := main_#t~nondet7;havoc main_#t~nondet7;main_~P9~0 := main_#t~nondet8;havoc main_#t~nondet8; {119#(= 0 ULTIMATE.start_main_~q~0)} is VALID [2020-07-29 02:02:45,386 INFO L280 TraceCheckUtils]: 4: Hoare triple {119#(= 0 ULTIMATE.start_main_~q~0)} assume !(main_~this_expect~0 > 16); {119#(= 0 ULTIMATE.start_main_~q~0)} is VALID [2020-07-29 02:02:45,387 INFO L280 TraceCheckUtils]: 5: Hoare triple {119#(= 0 ULTIMATE.start_main_~q~0)} assume !(0 == main_~q~0); {118#false} is VALID [2020-07-29 02:02:45,387 INFO L280 TraceCheckUtils]: 6: Hoare triple {118#false} assume !(1 == main_~q~0); {118#false} is VALID [2020-07-29 02:02:45,388 INFO L280 TraceCheckUtils]: 7: Hoare triple {118#false} assume !(2 == main_~q~0); {118#false} is VALID [2020-07-29 02:02:45,388 INFO L280 TraceCheckUtils]: 8: Hoare triple {118#false} assume !(3 == main_~q~0); {118#false} is VALID [2020-07-29 02:02:45,389 INFO L280 TraceCheckUtils]: 9: Hoare triple {118#false} assume !(4 == main_~q~0); {118#false} is VALID [2020-07-29 02:02:45,389 INFO L280 TraceCheckUtils]: 10: Hoare triple {118#false} assume !(5 == main_~q~0); {118#false} is VALID [2020-07-29 02:02:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 02:02:45,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613457310] [2020-07-29 02:02:45,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 02:02:45,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-29 02:02:45,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469075246] [2020-07-29 02:02:45,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 02:02:45,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-29 02:02:45,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 02:02:45,567 INFO L87 Difference]: Start difference. First operand 109 states. Second operand 3 states. [2020-07-29 02:02:46,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:02:46,117 INFO L93 Difference]: Finished difference Result 113 states and 210 transitions. [2020-07-29 02:02:46,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-29 02:02:46,119 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-29 02:02:46,137 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 02:02:46,140 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 113 states and 210 transitions. [2020-07-29 02:02:46,150 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2020-07-29 02:02:46,158 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 113 states to 82 states and 125 transitions. [2020-07-29 02:02:46,160 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2020-07-29 02:02:46,160 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 82 [2020-07-29 02:02:46,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 125 transitions. [2020-07-29 02:02:46,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-29 02:02:46,162 INFO L688 BuchiCegarLoop]: Abstraction has 82 states and 125 transitions. [2020-07-29 02:02:46,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states and 125 transitions. [2020-07-29 02:02:46,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-07-29 02:02:46,197 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 02:02:46,198 INFO L82 GeneralOperation]: Start isEquivalent. First operand 82 states and 125 transitions. Second operand 82 states. [2020-07-29 02:02:46,198 INFO L74 IsIncluded]: Start isIncluded. First operand 82 states and 125 transitions. Second operand 82 states. [2020-07-29 02:02:46,200 INFO L87 Difference]: Start difference. First operand 82 states and 125 transitions. Second operand 82 states. [2020-07-29 02:02:46,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:02:46,206 INFO L93 Difference]: Finished difference Result 82 states and 125 transitions. [2020-07-29 02:02:46,206 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 125 transitions. [2020-07-29 02:02:46,208 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 02:02:46,208 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 02:02:46,209 INFO L74 IsIncluded]: Start isIncluded. First operand 82 states. Second operand 82 states and 125 transitions. [2020-07-29 02:02:46,209 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 82 states and 125 transitions. [2020-07-29 02:02:46,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:02:46,215 INFO L93 Difference]: Finished difference Result 82 states and 125 transitions. [2020-07-29 02:02:46,215 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 125 transitions. [2020-07-29 02:02:46,216 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 02:02:46,216 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 02:02:46,217 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 02:02:46,217 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 02:02:46,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-07-29 02:02:46,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 125 transitions. [2020-07-29 02:02:46,223 INFO L711 BuchiCegarLoop]: Abstraction has 82 states and 125 transitions. [2020-07-29 02:02:46,223 INFO L591 BuchiCegarLoop]: Abstraction has 82 states and 125 transitions. [2020-07-29 02:02:46,224 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-29 02:02:46,224 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 82 states and 125 transitions. [2020-07-29 02:02:46,225 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2020-07-29 02:02:46,226 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:02:46,226 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:02:46,226 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-29 02:02:46,227 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-07-29 02:02:46,227 INFO L794 eck$LassoCheckResult]: Stem: 290#ULTIMATE.startENTRY ~m_Protocol~0 := 1;~m_msg_2~0 := 2;~m_recv_ack_2~0 := 3;~m_msg_1_1~0 := 4;~m_msg_1_2~0 := 5;~m_recv_ack_1_1~0 := 6;~m_recv_ack_1_2~0 := 7; 252#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_~P1~0, main_~P2~0, main_~P3~0, main_~P4~0, main_~P5~0, main_~P6~0, main_~P7~0, main_~P8~0, main_~P9~0, main_~q~0, main_~method_id~0, main_~this_expect~0, main_~this_buffer_empty~0;main_~q~0 := 0;havoc main_~method_id~0;main_~this_expect~0 := 0;main_~this_buffer_empty~0 := 0; 253#L24-2 goto; 293#L561 [2020-07-29 02:02:46,227 INFO L796 eck$LassoCheckResult]: Loop: 293#L561 assume !false;main_~P1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~P2~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~P3~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~P4~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~P5~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~P6~0 := main_#t~nondet5;havoc main_#t~nondet5;main_~P7~0 := main_#t~nondet6;havoc main_#t~nondet6;main_~P8~0 := main_#t~nondet7;havoc main_#t~nondet7;main_~P9~0 := main_#t~nondet8;havoc main_#t~nondet8; 297#L38 assume !(main_~this_expect~0 > 16); 298#L38-2 assume 0 == main_~q~0; 292#L44 assume !(0 != main_#t~nondet9);havoc main_#t~nondet9; 293#L561 [2020-07-29 02:02:46,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:02:46,228 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2020-07-29 02:02:46,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:02:46,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994514851] [2020-07-29 02:02:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:02:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:46,236 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:46,240 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:46,244 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:02:46,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:02:46,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1267254, now seen corresponding path program 1 times [2020-07-29 02:02:46,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:02:46,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902104827] [2020-07-29 02:02:46,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:02:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:46,251 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:46,256 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:46,258 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:02:46,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:02:46,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1805953496, now seen corresponding path program 1 times [2020-07-29 02:02:46,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:02:46,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981239449] [2020-07-29 02:02:46,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:02:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:46,268 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:46,275 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:46,281 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:02:46,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.07 02:02:46 BoogieIcfgContainer [2020-07-29 02:02:46,457 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-29 02:02:46,458 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 02:02:46,458 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 02:02:46,459 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 02:02:46,459 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:02:44" (3/4) ... [2020-07-29 02:02:46,463 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-07-29 02:02:46,516 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-29 02:02:46,517 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 02:02:46,520 INFO L168 Benchmark]: Toolchain (without parser) took 4010.76 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 961.6 MB in the beginning and 847.5 MB in the end (delta: 114.0 MB). Peak memory consumption was 226.8 MB. Max. memory is 11.5 GB. [2020-07-29 02:02:46,521 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 02:02:46,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 961.6 MB in the beginning and 1.1 GB in the end (delta: -137.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. [2020-07-29 02:02:46,522 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-07-29 02:02:46,523 INFO L168 Benchmark]: Boogie Preprocessor took 53.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-07-29 02:02:46,524 INFO L168 Benchmark]: RCFGBuilder took 1603.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 985.0 MB in the end (delta: 100.8 MB). Peak memory consumption was 100.8 MB. Max. memory is 11.5 GB. [2020-07-29 02:02:46,525 INFO L168 Benchmark]: BuchiAutomizer took 1523.64 ms. Allocated memory is still 1.1 GB. Free memory was 985.0 MB in the beginning and 854.3 MB in the end (delta: 130.7 MB). Peak memory consumption was 130.7 MB. Max. memory is 11.5 GB. [2020-07-29 02:02:46,525 INFO L168 Benchmark]: Witness Printer took 58.94 ms. Allocated memory is still 1.1 GB. Free memory was 854.3 MB in the beginning and 847.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-07-29 02:02:46,529 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 663.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.7 MB). Free memory was 961.6 MB in the beginning and 1.1 GB in the end (delta: -137.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 100.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1603.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 985.0 MB in the end (delta: 100.8 MB). Peak memory consumption was 100.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1523.64 ms. Allocated memory is still 1.1 GB. Free memory was 985.0 MB in the beginning and 854.3 MB in the end (delta: 130.7 MB). Peak memory consumption was 130.7 MB. Max. memory is 11.5 GB. * Witness Printer took 58.94 ms. Allocated memory is still 1.1 GB. Free memory was 854.3 MB in the beginning and 847.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * 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 1.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. 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: 204 SDtfs, 5 SDslu, 158 SDs, 0 SdLazy, 43 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time 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: 24]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {m_Protocol=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f419859=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7abb3412=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@37181bb6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44c01375=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@124eb47e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@228bd6ec=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@159d34cf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b471d95=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@68e7c7f4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b5f755e=0, P8=11, P6=13, P4=15, P2=10, this_buffer_empty=0, this_expect=0, m_recv_ack_1_2=7, m_msg_1_1=4, \result=0, m_recv_ack_2=3, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4da2ea5=11, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@32fba64c=14, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a7a8fd6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12ee6129=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2879731d=15, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@51ace77d=16, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@63ee9ca8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@35f8a789=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@60cb0e53=13, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@675848c8=9, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@19c7a53a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48463d42=12, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f7fd53e=10, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12e2bedc=8, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4851f05f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a8de7eb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@78c16802=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6fdda06e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1fe996f3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3b230e41=0, P9=14, P7=9, P5=16, P3=8, P1=12, m_msg_2=2, m_msg_1_2=5, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5539aca0=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@11a656c9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@76acfdc7=0, q=0, m_recv_ack_1_1=6, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49870ec2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f392f2b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@726bcf1b=0, method_id=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a6c6948=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12289809=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@311b949b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@20c815ba=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 24]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L5] int m_Protocol = 1; [L6] int m_msg_2 = 2; [L7] int m_recv_ack_2 = 3; [L8] int m_msg_1_1 = 4; [L9] int m_msg_1_2 = 5; [L10] int m_recv_ack_1_1 = 6; [L11] int m_recv_ack_1_2 = 7; [L16] int q = 0; [L17] int method_id; [L20] int this_expect = 0; [L21] int this_buffer_empty = 0; Loop: [L24] COND TRUE 1 [L27] int P1=__VERIFIER_nondet_int(); [L28] int P2=__VERIFIER_nondet_int(); [L29] int P3=__VERIFIER_nondet_int(); [L30] int P4=__VERIFIER_nondet_int(); [L31] int P5=__VERIFIER_nondet_int(); [L32] int P6=__VERIFIER_nondet_int(); [L33] int P7=__VERIFIER_nondet_int(); [L34] int P8=__VERIFIER_nondet_int(); [L35] int P9=__VERIFIER_nondet_int(); [L38] COND FALSE !(this_expect > 16) [L43] COND TRUE q == 0 [L44] COND FALSE !(__VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...