./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/psyco/psyco_abp_1-3.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_1-3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 45f0d0ab6d17adbe7cd7f36bcd9ec097795f4c36 ........................................................................................................................................................................................................................................................................................................................................................................................ 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 02:02:44,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 02:02:44,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 02:02:44,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 02:02:44,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 02:02:44,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 02:02:44,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 02:02:44,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 02:02:44,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 02:02:44,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 02:02:44,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 02:02:44,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 02:02:44,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 02:02:44,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 02:02:44,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 02:02:44,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 02:02:44,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 02:02:44,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 02:02:44,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 02:02:44,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 02:02:44,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 02:02:44,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 02:02:44,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 02:02:44,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 02:02:44,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 02:02:44,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 02:02:44,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 02:02:44,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 02:02:44,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 02:02:44,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 02:02:44,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 02:02:44,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 02:02:44,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 02:02:44,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 02:02:44,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 02:02:44,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 02:02:44,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 02:02:44,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 02:02:44,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 02:02:45,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 02:02:45,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 02:02:45,002 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-07-29 02:02:45,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 02:02:45,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 02:02:45,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 02:02:45,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 02:02:45,044 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 02:02:45,044 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-07-29 02:02:45,045 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-07-29 02:02:45,045 INFO L138 SettingsManager]: * Use old map elimination=false [2020-07-29 02:02:45,045 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-07-29 02:02:45,045 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-07-29 02:02:45,046 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-07-29 02:02:45,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 02:02:45,047 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 02:02:45,048 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 02:02:45,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 02:02:45,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 02:02:45,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 02:02:45,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-07-29 02:02:45,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-07-29 02:02:45,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-07-29 02:02:45,050 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 02:02:45,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 02:02:45,050 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-07-29 02:02:45,051 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 02:02:45,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-07-29 02:02:45,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 02:02:45,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 02:02:45,052 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-07-29 02:02:45,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 02:02:45,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 02:02:45,053 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 02:02:45,054 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-07-29 02:02:45,055 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-07-29 02:02:45,056 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 -> 45f0d0ab6d17adbe7cd7f36bcd9ec097795f4c36 [2020-07-29 02:02:45,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 02:02:45,386 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 02:02:45,389 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 02:02:45,391 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 02:02:45,391 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 02:02:45,392 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_abp_1-3.c [2020-07-29 02:02:45,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c16b31e2/63100b3a4f6e49bc806a494d17cf3780/FLAG3d6088083 [2020-07-29 02:02:45,969 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 02:02:45,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_abp_1-3.c [2020-07-29 02:02:45,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c16b31e2/63100b3a4f6e49bc806a494d17cf3780/FLAG3d6088083 [2020-07-29 02:02:46,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c16b31e2/63100b3a4f6e49bc806a494d17cf3780 [2020-07-29 02:02:46,275 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 02:02:46,278 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 02:02:46,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 02:02:46,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 02:02:46,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 02:02:46,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 02:02:46" (1/1) ... [2020-07-29 02:02:46,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ce5a4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:46, skipping insertion in model container [2020-07-29 02:02:46,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 02:02:46" (1/1) ... [2020-07-29 02:02:46,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 02:02:46,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 02:02:46,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 02:02:46,683 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 02:02:46,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 02:02:46,879 INFO L208 MainTranslator]: Completed translation [2020-07-29 02:02:46,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:46 WrapperNode [2020-07-29 02:02:46,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 02:02:46,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 02:02:46,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 02:02:46,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 02:02:46,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:46" (1/1) ... [2020-07-29 02:02:46,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:46" (1/1) ... [2020-07-29 02:02:47,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 02:02:47,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 02:02:47,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 02:02:47,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 02:02:47,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:46" (1/1) ... [2020-07-29 02:02:47,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:46" (1/1) ... [2020-07-29 02:02:47,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:46" (1/1) ... [2020-07-29 02:02:47,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:46" (1/1) ... [2020-07-29 02:02:47,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:46" (1/1) ... [2020-07-29 02:02:47,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:46" (1/1) ... [2020-07-29 02:02:47,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:46" (1/1) ... [2020-07-29 02:02:47,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 02:02:47,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 02:02:47,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 02:02:47,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 02:02:47,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:46" (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 02:02:47,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 02:02:47,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 02:02:48,370 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 02:02:48,371 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-29 02:02:48,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:02:48 BoogieIcfgContainer [2020-07-29 02:02:48,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 02:02:48,378 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-07-29 02:02:48,378 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-07-29 02:02:48,382 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-07-29 02:02:48,384 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:02:48,384 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.07 02:02:46" (1/3) ... [2020-07-29 02:02:48,385 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1f7d4203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 02:02:48, skipping insertion in model container [2020-07-29 02:02:48,386 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:02:48,386 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 02:02:46" (2/3) ... [2020-07-29 02:02:48,387 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1f7d4203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.07 02:02:48, skipping insertion in model container [2020-07-29 02:02:48,387 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-07-29 02:02:48,387 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:02:48" (3/3) ... [2020-07-29 02:02:48,389 INFO L371 chiAutomizerObserver]: Analyzing ICFG psyco_abp_1-3.c [2020-07-29 02:02:48,441 INFO L356 BuchiCegarLoop]: Interprodecural is true [2020-07-29 02:02:48,441 INFO L357 BuchiCegarLoop]: Hoare is false [2020-07-29 02:02:48,441 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-07-29 02:02:48,441 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 02:02:48,443 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 02:02:48,443 INFO L361 BuchiCegarLoop]: Difference is false [2020-07-29 02:02:48,443 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 02:02:48,444 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-07-29 02:02:48,462 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 108 states. [2020-07-29 02:02:48,513 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 75 [2020-07-29 02:02:48,514 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:02:48,514 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:02:48,522 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-29 02:02:48,522 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-29 02:02:48,522 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2020-07-29 02:02:48,523 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 108 states. [2020-07-29 02:02:48,538 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 75 [2020-07-29 02:02:48,539 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:02:48,539 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:02:48,540 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-07-29 02:02:48,540 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-29 02:02:48,549 INFO L794 eck$LassoCheckResult]: Stem: 78#ULTIMATE.startENTRYtrue ~m_Protocol~0 := 1;~m_msg_2~0 := 2;~m_recv_ack_2~0 := 3;~m_msg_1_1~0 := 4;~m_msg_1_2~0 := 5;~m_recv_ack_1_1~0 := 6;~m_recv_ack_1_2~0 := 7; 10#L-1true havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_~P1~0, main_~P2~0, main_~P3~0, main_~P4~0, main_~P5~0, main_~P6~0, main_~P7~0, main_~P8~0, main_~P9~0, main_~q~0, main_~method_id~0, main_~this_expect~0, main_~this_buffer_empty~0;main_~q~0 := 0;havoc main_~method_id~0;main_~this_expect~0 := 0;main_~this_buffer_empty~0 := 0; 107#L24-2true [2020-07-29 02:02:48,550 INFO L796 eck$LassoCheckResult]: Loop: 107#L24-2true goto; 31#L557true 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; 47#L39true assume !(0 == main_~q~0); 21#L59true assume !(1 == main_~q~0); 103#L159true assume !(2 == main_~q~0); 68#L259true assume !(3 == main_~q~0); 27#L359true assume !(4 == main_~q~0); 101#L459true assume !(5 == main_~q~0); 107#L24-2true [2020-07-29 02:02:48,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:02:48,557 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-07-29 02:02:48,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:02:48,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736675646] [2020-07-29 02:02:48,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:02:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:48,643 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:48,651 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:48,672 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:02:48,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:02:48,674 INFO L82 PathProgramCache]: Analyzing trace with hash -2021581594, now seen corresponding path program 1 times [2020-07-29 02:02:48,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:02:48,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154706497] [2020-07-29 02:02:48,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:02:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:48,684 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:48,692 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:48,696 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:02:48,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:02:48,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1331020120, now seen corresponding path program 1 times [2020-07-29 02:02:48,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:02:48,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353197536] [2020-07-29 02:02:48,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:02:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 02:02:48,819 INFO L280 TraceCheckUtils]: 0: Hoare triple {116#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; {116#true} is VALID [2020-07-29 02:02:48,821 INFO L280 TraceCheckUtils]: 1: Hoare triple {116#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; {118#(= 0 ULTIMATE.start_main_~q~0)} is VALID [2020-07-29 02:02:48,823 INFO L280 TraceCheckUtils]: 2: Hoare triple {118#(= 0 ULTIMATE.start_main_~q~0)} goto; {118#(= 0 ULTIMATE.start_main_~q~0)} is VALID [2020-07-29 02:02:48,824 INFO L280 TraceCheckUtils]: 3: Hoare triple {118#(= 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; {118#(= 0 ULTIMATE.start_main_~q~0)} is VALID [2020-07-29 02:02:48,825 INFO L280 TraceCheckUtils]: 4: Hoare triple {118#(= 0 ULTIMATE.start_main_~q~0)} assume !(0 == main_~q~0); {117#false} is VALID [2020-07-29 02:02:48,825 INFO L280 TraceCheckUtils]: 5: Hoare triple {117#false} assume !(1 == main_~q~0); {117#false} is VALID [2020-07-29 02:02:48,826 INFO L280 TraceCheckUtils]: 6: Hoare triple {117#false} assume !(2 == main_~q~0); {117#false} is VALID [2020-07-29 02:02:48,826 INFO L280 TraceCheckUtils]: 7: Hoare triple {117#false} assume !(3 == main_~q~0); {117#false} is VALID [2020-07-29 02:02:48,827 INFO L280 TraceCheckUtils]: 8: Hoare triple {117#false} assume !(4 == main_~q~0); {117#false} is VALID [2020-07-29 02:02:48,827 INFO L280 TraceCheckUtils]: 9: Hoare triple {117#false} assume !(5 == main_~q~0); {117#false} is VALID [2020-07-29 02:02:48,830 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 02:02:48,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353197536] [2020-07-29 02:02:48,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 02:02:48,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-29 02:02:48,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101777930] [2020-07-29 02:02:48,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 02:02:48,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-29 02:02:48,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-29 02:02:48,989 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 3 states. [2020-07-29 02:02:49,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:02:49,606 INFO L93 Difference]: Finished difference Result 111 states and 201 transitions. [2020-07-29 02:02:49,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-29 02:02:49,607 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-29 02:02:49,626 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 02:02:49,629 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 201 transitions. [2020-07-29 02:02:49,638 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2020-07-29 02:02:49,646 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 80 states and 121 transitions. [2020-07-29 02:02:49,648 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 80 [2020-07-29 02:02:49,649 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 80 [2020-07-29 02:02:49,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 121 transitions. [2020-07-29 02:02:49,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-07-29 02:02:49,651 INFO L688 BuchiCegarLoop]: Abstraction has 80 states and 121 transitions. [2020-07-29 02:02:49,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states and 121 transitions. [2020-07-29 02:02:49,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-07-29 02:02:49,688 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 02:02:49,689 INFO L82 GeneralOperation]: Start isEquivalent. First operand 80 states and 121 transitions. Second operand 80 states. [2020-07-29 02:02:49,689 INFO L74 IsIncluded]: Start isIncluded. First operand 80 states and 121 transitions. Second operand 80 states. [2020-07-29 02:02:49,691 INFO L87 Difference]: Start difference. First operand 80 states and 121 transitions. Second operand 80 states. [2020-07-29 02:02:49,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:02:49,699 INFO L93 Difference]: Finished difference Result 80 states and 121 transitions. [2020-07-29 02:02:49,707 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 121 transitions. [2020-07-29 02:02:49,711 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 02:02:49,712 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 02:02:49,712 INFO L74 IsIncluded]: Start isIncluded. First operand 80 states. Second operand 80 states and 121 transitions. [2020-07-29 02:02:49,714 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 80 states and 121 transitions. [2020-07-29 02:02:49,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 02:02:49,723 INFO L93 Difference]: Finished difference Result 80 states and 121 transitions. [2020-07-29 02:02:49,723 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 121 transitions. [2020-07-29 02:02:49,725 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 02:02:49,725 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 02:02:49,725 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 02:02:49,726 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 02:02:49,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-29 02:02:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 121 transitions. [2020-07-29 02:02:49,732 INFO L711 BuchiCegarLoop]: Abstraction has 80 states and 121 transitions. [2020-07-29 02:02:49,733 INFO L591 BuchiCegarLoop]: Abstraction has 80 states and 121 transitions. [2020-07-29 02:02:49,733 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2020-07-29 02:02:49,733 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states and 121 transitions. [2020-07-29 02:02:49,735 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2020-07-29 02:02:49,735 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-07-29 02:02:49,735 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-07-29 02:02:49,736 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-07-29 02:02:49,736 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-07-29 02:02:49,736 INFO L794 eck$LassoCheckResult]: Stem: 291#ULTIMATE.startENTRY ~m_Protocol~0 := 1;~m_msg_2~0 := 2;~m_recv_ack_2~0 := 3;~m_msg_1_1~0 := 4;~m_msg_1_2~0 := 5;~m_recv_ack_1_1~0 := 6;~m_recv_ack_1_2~0 := 7; 253#L-1 havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_~P1~0, main_~P2~0, main_~P3~0, main_~P4~0, main_~P5~0, main_~P6~0, main_~P7~0, main_~P8~0, main_~P9~0, main_~q~0, main_~method_id~0, main_~this_expect~0, main_~this_buffer_empty~0;main_~q~0 := 0;havoc main_~method_id~0;main_~this_expect~0 := 0;main_~this_buffer_empty~0 := 0; 254#L24-2 goto; 247#L557 [2020-07-29 02:02:49,737 INFO L796 eck$LassoCheckResult]: Loop: 247#L557 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; 304#L39 assume 0 == main_~q~0; 245#L40 assume !(0 != main_#t~nondet9);havoc main_#t~nondet9; 247#L557 [2020-07-29 02:02:49,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:02:49,737 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2020-07-29 02:02:49,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:02:49,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617157998] [2020-07-29 02:02:49,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:02:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:49,746 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:49,751 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:49,754 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:02:49,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:02:49,755 INFO L82 PathProgramCache]: Analyzing trace with hash 40826, now seen corresponding path program 1 times [2020-07-29 02:02:49,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:02:49,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527138737] [2020-07-29 02:02:49,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:02:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:49,765 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:49,771 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:49,776 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:02:49,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 02:02:49,777 INFO L82 PathProgramCache]: Analyzing trace with hash 889540504, now seen corresponding path program 1 times [2020-07-29 02:02:49,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 02:02:49,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724377260] [2020-07-29 02:02:49,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 02:02:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:49,789 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 02:02:49,795 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 02:02:49,800 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 02:02:49,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.07 02:02:49 BoogieIcfgContainer [2020-07-29 02:02:49,988 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-07-29 02:02:49,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 02:02:49,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 02:02:49,989 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 02:02:49,990 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 02:02:48" (3/4) ... [2020-07-29 02:02:49,995 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-07-29 02:02:50,060 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-29 02:02:50,060 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 02:02:50,064 INFO L168 Benchmark]: Toolchain (without parser) took 3786.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 960.2 MB in the beginning and 861.8 MB in the end (delta: 98.4 MB). Peak memory consumption was 222.1 MB. Max. memory is 11.5 GB. [2020-07-29 02:02:50,065 INFO L168 Benchmark]: CDTParser took 0.27 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 02:02:50,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -152.2 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. [2020-07-29 02:02:50,067 INFO L168 Benchmark]: Boogie Procedure Inliner took 125.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. [2020-07-29 02:02:50,067 INFO L168 Benchmark]: Boogie Preprocessor took 55.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-07-29 02:02:50,068 INFO L168 Benchmark]: RCFGBuilder took 1311.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 991.0 MB in the end (delta: 106.3 MB). Peak memory consumption was 106.3 MB. Max. memory is 11.5 GB. [2020-07-29 02:02:50,069 INFO L168 Benchmark]: BuchiAutomizer took 1610.51 ms. Allocated memory is still 1.2 GB. Free memory was 991.0 MB in the beginning and 861.8 MB in the end (delta: 129.1 MB). Peak memory consumption was 129.1 MB. Max. memory is 11.5 GB. [2020-07-29 02:02:50,070 INFO L168 Benchmark]: Witness Printer took 71.84 ms. Allocated memory is still 1.2 GB. Free memory is still 861.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 02:02:50,075 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 0.27 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 604.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.7 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -152.2 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 125.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 55.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1311.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 991.0 MB in the end (delta: 106.3 MB). Peak memory consumption was 106.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1610.51 ms. Allocated memory is still 1.2 GB. Free memory was 991.0 MB in the beginning and 861.8 MB in the end (delta: 129.1 MB). Peak memory consumption was 129.1 MB. Max. memory is 11.5 GB. * Witness Printer took 71.84 ms. Allocated memory is still 1.2 GB. Free memory is still 861.8 MB. There was no memory consumed. 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 80 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s 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 80 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 197 SDtfs, 4 SDslu, 151 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@39e5c917=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@11ceaea4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@24978621=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4a131ae2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@65baa562=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@57da2a8c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@a0d14d6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@35bb6a23=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2281a0f2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@46de9188=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@4c9c93fc=11, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5699a83b=14, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@643b7652=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6dcb0a23=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7288541a=15, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39b47569=16, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@704e0649=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@30e7ec09=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@bb724ee=13, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7c0430e2=9, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@68658ceb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6bb4186a=12, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@480f47c6=10, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1b8d993b=8, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1b71fbbb=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@77a8ad4d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d4a19d6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5db62078=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@523e1863=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@16f8d41b=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@4fe408d8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1df2dfcc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2dd3f8a5=0, q=0, m_recv_ack_1_1=6, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f52595a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@79873dd4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@393c2cc2=0, method_id=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2bdb29d9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@449646b2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4f11ed53=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7d3522c4=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] unsigned int this_expect = 0; [L21] unsigned 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(); [L39] COND TRUE q == 0 [L40] COND FALSE !(__VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...