./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/locks/test_locks_5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/locks/test_locks_5.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 3f68d39859f114df07f2619f37e3285dcdf00194e62a42552d2c67e537c13685 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 09:15:23,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 09:15:23,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 09:15:23,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 09:15:23,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 09:15:23,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 09:15:23,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 09:15:23,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 09:15:23,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 09:15:23,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 09:15:23,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 09:15:23,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 09:15:23,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 09:15:23,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 09:15:23,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 09:15:23,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 09:15:23,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 09:15:23,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 09:15:23,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 09:15:23,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 09:15:23,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 09:15:23,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 09:15:23,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 09:15:23,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 09:15:23,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 09:15:23,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 09:15:23,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 09:15:23,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 09:15:23,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 09:15:23,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 09:15:23,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 09:15:23,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 09:15:23,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 09:15:23,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 09:15:23,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 09:15:23,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 09:15:23,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 09:15:23,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 09:15:23,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 09:15:23,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 09:15:23,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 09:15:23,469 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-28 09:15:23,507 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 09:15:23,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 09:15:23,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 09:15:23,508 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 09:15:23,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 09:15:23,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 09:15:23,510 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 09:15:23,510 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-28 09:15:23,510 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-28 09:15:23,511 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-28 09:15:23,511 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-28 09:15:23,512 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-28 09:15:23,512 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-28 09:15:23,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 09:15:23,512 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 09:15:23,512 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 09:15:23,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 09:15:23,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 09:15:23,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 09:15:23,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-28 09:15:23,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-28 09:15:23,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-28 09:15:23,514 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 09:15:23,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 09:15:23,514 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-28 09:15:23,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 09:15:23,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-28 09:15:23,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 09:15:23,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 09:15:23,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 09:15:23,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 09:15:23,516 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-28 09:15:23,517 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f68d39859f114df07f2619f37e3285dcdf00194e62a42552d2c67e537c13685 [2021-12-28 09:15:23,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 09:15:23,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 09:15:23,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 09:15:23,854 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 09:15:23,855 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 09:15:23,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_5.c [2021-12-28 09:15:23,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3702e3c90/c93470cc707749779a6bd35ff54c3847/FLAG0631ea955 [2021-12-28 09:15:24,392 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 09:15:24,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c [2021-12-28 09:15:24,400 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3702e3c90/c93470cc707749779a6bd35ff54c3847/FLAG0631ea955 [2021-12-28 09:15:24,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3702e3c90/c93470cc707749779a6bd35ff54c3847 [2021-12-28 09:15:24,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 09:15:24,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 09:15:24,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 09:15:24,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 09:15:24,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 09:15:24,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:15:24" (1/1) ... [2021-12-28 09:15:24,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@456a5323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:24, skipping insertion in model container [2021-12-28 09:15:24,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:15:24" (1/1) ... [2021-12-28 09:15:24,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 09:15:24,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 09:15:24,618 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c[2207,2220] [2021-12-28 09:15:24,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:15:24,628 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 09:15:24,649 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c[2207,2220] [2021-12-28 09:15:24,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:15:24,661 INFO L208 MainTranslator]: Completed translation [2021-12-28 09:15:24,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:24 WrapperNode [2021-12-28 09:15:24,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 09:15:24,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 09:15:24,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 09:15:24,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 09:15:24,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:24" (1/1) ... [2021-12-28 09:15:24,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:24" (1/1) ... [2021-12-28 09:15:24,694 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2021-12-28 09:15:24,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 09:15:24,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 09:15:24,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 09:15:24,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 09:15:24,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:24" (1/1) ... [2021-12-28 09:15:24,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:24" (1/1) ... [2021-12-28 09:15:24,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:24" (1/1) ... [2021-12-28 09:15:24,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:24" (1/1) ... [2021-12-28 09:15:24,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:24" (1/1) ... [2021-12-28 09:15:24,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:24" (1/1) ... [2021-12-28 09:15:24,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:24" (1/1) ... [2021-12-28 09:15:24,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 09:15:24,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 09:15:24,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 09:15:24,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 09:15:24,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:24" (1/1) ... [2021-12-28 09:15:24,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:15:24,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:15:24,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:15:24,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-28 09:15:24,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 09:15:24,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 09:15:24,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 09:15:24,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 09:15:24,842 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 09:15:24,843 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 09:15:25,002 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 09:15:25,007 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 09:15:25,008 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 09:15:25,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:15:25 BoogieIcfgContainer [2021-12-28 09:15:25,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 09:15:25,023 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-28 09:15:25,023 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-28 09:15:25,026 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-28 09:15:25,027 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:15:25,027 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:15:24" (1/3) ... [2021-12-28 09:15:25,028 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6763488b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:15:25, skipping insertion in model container [2021-12-28 09:15:25,028 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:15:25,028 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:24" (2/3) ... [2021-12-28 09:15:25,029 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6763488b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:15:25, skipping insertion in model container [2021-12-28 09:15:25,029 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:15:25,029 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:15:25" (3/3) ... [2021-12-28 09:15:25,030 INFO L388 chiAutomizerObserver]: Analyzing ICFG test_locks_5.c [2021-12-28 09:15:25,089 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-28 09:15:25,090 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-28 09:15:25,090 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-28 09:15:25,090 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-28 09:15:25,090 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-28 09:15:25,090 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-28 09:15:25,090 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-28 09:15:25,090 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-28 09:15:25,102 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:15:25,116 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-12-28 09:15:25,116 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:15:25,116 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:15:25,121 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:15:25,122 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:15:25,122 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-28 09:15:25,123 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:15:25,125 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-12-28 09:15:25,125 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:15:25,125 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:15:25,126 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:15:25,126 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:15:25,132 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 14#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_~cond~0#1; 8#L85-1true [2021-12-28 09:15:25,133 INFO L793 eck$LassoCheckResult]: Loop: 8#L85-1true assume !false;main_~cond~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1; 23#L28true assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0; 9#L43true assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1; 10#L43-2true assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 19#L47-1true assume !(0 != main_~p3~0#1); 17#L51-1true assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 18#L55-1true assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 21#L59-1true assume !(0 != main_~p1~0#1); 11#L65-1true assume !(0 != main_~p2~0#1); 20#L70-1true assume !(0 != main_~p3~0#1); 22#L75-1true assume !(0 != main_~p4~0#1); 24#L80-1true assume !(0 != main_~p5~0#1); 8#L85-1true [2021-12-28 09:15:25,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:25,138 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-28 09:15:25,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:25,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976749448] [2021-12-28 09:15:25,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:25,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:25,215 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:25,255 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:25,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:25,259 INFO L85 PathProgramCache]: Analyzing trace with hash -2089480461, now seen corresponding path program 1 times [2021-12-28 09:15:25,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:25,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46901503] [2021-12-28 09:15:25,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:25,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:15:25,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:15:25,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:15:25,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46901503] [2021-12-28 09:15:25,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46901503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:15:25,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:15:25,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:15:25,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443959057] [2021-12-28 09:15:25,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:15:25,359 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:15:25,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:15:25,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:15:25,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:15:25,394 INFO L87 Difference]: Start difference. First operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:15:25,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:15:25,430 INFO L93 Difference]: Finished difference Result 45 states and 70 transitions. [2021-12-28 09:15:25,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:15:25,437 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 70 transitions. [2021-12-28 09:15:25,444 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 33 [2021-12-28 09:15:25,449 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 35 states and 53 transitions. [2021-12-28 09:15:25,450 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2021-12-28 09:15:25,451 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-12-28 09:15:25,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 53 transitions. [2021-12-28 09:15:25,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:15:25,461 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-12-28 09:15:25,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 53 transitions. [2021-12-28 09:15:25,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-12-28 09:15:25,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:15:25,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2021-12-28 09:15:25,491 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-12-28 09:15:25,491 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-12-28 09:15:25,491 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-28 09:15:25,492 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 53 transitions. [2021-12-28 09:15:25,495 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 33 [2021-12-28 09:15:25,495 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:15:25,495 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:15:25,496 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:15:25,496 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:15:25,496 INFO L791 eck$LassoCheckResult]: Stem: 80#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 81#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_~cond~0#1; 79#L85-1 [2021-12-28 09:15:25,497 INFO L793 eck$LassoCheckResult]: Loop: 79#L85-1 assume !false;main_~cond~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1; 84#L28 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0; 100#L43 assume !(0 != main_~p1~0#1); 87#L43-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 88#L47-1 assume !(0 != main_~p3~0#1); 93#L51-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 94#L55-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 95#L59-1 assume !(0 != main_~p1~0#1); 101#L65-1 assume !(0 != main_~p2~0#1); 111#L70-1 assume !(0 != main_~p3~0#1); 98#L75-1 assume !(0 != main_~p4~0#1); 92#L80-1 assume !(0 != main_~p5~0#1); 79#L85-1 [2021-12-28 09:15:25,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:25,498 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-28 09:15:25,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:25,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285167098] [2021-12-28 09:15:25,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:25,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:25,517 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:25,523 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:25,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:25,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1812459825, now seen corresponding path program 1 times [2021-12-28 09:15:25,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:25,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925630199] [2021-12-28 09:15:25,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:25,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:15:25,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:15:25,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:15:25,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925630199] [2021-12-28 09:15:25,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925630199] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:15:25,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:15:25,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:15:25,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602649735] [2021-12-28 09:15:25,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:15:25,564 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:15:25,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:15:25,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:15:25,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:15:25,567 INFO L87 Difference]: Start difference. First operand 35 states and 53 transitions. cyclomatic complexity: 20 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:15:25,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:15:25,588 INFO L93 Difference]: Finished difference Result 66 states and 98 transitions. [2021-12-28 09:15:25,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:15:25,590 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 98 transitions. [2021-12-28 09:15:25,593 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 64 [2021-12-28 09:15:25,596 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 66 states and 98 transitions. [2021-12-28 09:15:25,597 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 66 [2021-12-28 09:15:25,597 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2021-12-28 09:15:25,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 98 transitions. [2021-12-28 09:15:25,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:15:25,599 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2021-12-28 09:15:25,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 98 transitions. [2021-12-28 09:15:25,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-12-28 09:15:25,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 65 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:15:25,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 98 transitions. [2021-12-28 09:15:25,607 INFO L704 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2021-12-28 09:15:25,608 INFO L587 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2021-12-28 09:15:25,608 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-28 09:15:25,608 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 98 transitions. [2021-12-28 09:15:25,610 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 64 [2021-12-28 09:15:25,612 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:15:25,612 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:15:25,612 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:15:25,613 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:15:25,613 INFO L791 eck$LassoCheckResult]: Stem: 189#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 190#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_~cond~0#1; 200#L85-1 [2021-12-28 09:15:25,614 INFO L793 eck$LassoCheckResult]: Loop: 200#L85-1 assume !false;main_~cond~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1; 224#L28 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0; 222#L43 assume !(0 != main_~p1~0#1); 219#L43-2 assume !(0 != main_~p2~0#1); 217#L47-1 assume !(0 != main_~p3~0#1); 215#L51-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 214#L55-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 212#L59-1 assume !(0 != main_~p1~0#1); 213#L65-1 assume !(0 != main_~p2~0#1); 235#L70-1 assume !(0 != main_~p3~0#1); 231#L75-1 assume !(0 != main_~p4~0#1); 228#L80-1 assume !(0 != main_~p5~0#1); 200#L85-1 [2021-12-28 09:15:25,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:25,614 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-12-28 09:15:25,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:25,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211428692] [2021-12-28 09:15:25,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:25,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:25,627 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:25,640 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:25,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:25,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1802449101, now seen corresponding path program 1 times [2021-12-28 09:15:25,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:25,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254617297] [2021-12-28 09:15:25,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:25,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:15:25,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:15:25,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:15:25,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254617297] [2021-12-28 09:15:25,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254617297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:15:25,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:15:25,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:15:25,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879602475] [2021-12-28 09:15:25,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:15:25,688 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:15:25,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:15:25,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:15:25,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:15:25,689 INFO L87 Difference]: Start difference. First operand 66 states and 98 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:15:25,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:15:25,714 INFO L93 Difference]: Finished difference Result 126 states and 182 transitions. [2021-12-28 09:15:25,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:15:25,717 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 182 transitions. [2021-12-28 09:15:25,718 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 124 [2021-12-28 09:15:25,719 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 126 states and 182 transitions. [2021-12-28 09:15:25,719 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 126 [2021-12-28 09:15:25,720 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 126 [2021-12-28 09:15:25,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 182 transitions. [2021-12-28 09:15:25,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:15:25,721 INFO L681 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2021-12-28 09:15:25,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states and 182 transitions. [2021-12-28 09:15:25,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-12-28 09:15:25,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 126 states have (on average 1.4444444444444444) internal successors, (182), 125 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:15:25,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 182 transitions. [2021-12-28 09:15:25,728 INFO L704 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2021-12-28 09:15:25,728 INFO L587 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2021-12-28 09:15:25,728 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-28 09:15:25,728 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 182 transitions. [2021-12-28 09:15:25,729 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 124 [2021-12-28 09:15:25,730 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:15:25,730 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:15:25,730 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:15:25,730 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:15:25,730 INFO L791 eck$LassoCheckResult]: Stem: 385#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 386#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_~cond~0#1; 400#L85-1 [2021-12-28 09:15:25,730 INFO L793 eck$LassoCheckResult]: Loop: 400#L85-1 assume !false;main_~cond~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1; 435#L28 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0; 431#L43 assume !(0 != main_~p1~0#1); 428#L43-2 assume !(0 != main_~p2~0#1); 426#L47-1 assume !(0 != main_~p3~0#1); 425#L51-1 assume !(0 != main_~p4~0#1); 421#L55-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 422#L59-1 assume !(0 != main_~p1~0#1); 447#L65-1 assume !(0 != main_~p2~0#1); 445#L70-1 assume !(0 != main_~p3~0#1); 442#L75-1 assume !(0 != main_~p4~0#1); 439#L80-1 assume !(0 != main_~p5~0#1); 400#L85-1 [2021-12-28 09:15:25,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:25,731 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-12-28 09:15:25,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:25,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138043868] [2021-12-28 09:15:25,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:25,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:25,736 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:25,741 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:25,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:25,742 INFO L85 PathProgramCache]: Analyzing trace with hash -27441739, now seen corresponding path program 1 times [2021-12-28 09:15:25,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:25,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076513895] [2021-12-28 09:15:25,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:25,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:15:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:15:25,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:15:25,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076513895] [2021-12-28 09:15:25,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076513895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:15:25,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:15:25,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 09:15:25,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825272082] [2021-12-28 09:15:25,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:15:25,760 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:15:25,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:15:25,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:15:25,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:15:25,761 INFO L87 Difference]: Start difference. First operand 126 states and 182 transitions. cyclomatic complexity: 64 Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:15:25,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:15:25,773 INFO L93 Difference]: Finished difference Result 242 states and 338 transitions. [2021-12-28 09:15:25,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:15:25,774 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 242 states and 338 transitions. [2021-12-28 09:15:25,776 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 240 [2021-12-28 09:15:25,778 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 242 states to 242 states and 338 transitions. [2021-12-28 09:15:25,778 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 242 [2021-12-28 09:15:25,779 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 242 [2021-12-28 09:15:25,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 242 states and 338 transitions. [2021-12-28 09:15:25,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:15:25,780 INFO L681 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2021-12-28 09:15:25,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states and 338 transitions. [2021-12-28 09:15:25,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-12-28 09:15:25,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 242 states have (on average 1.396694214876033) internal successors, (338), 241 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:15:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 338 transitions. [2021-12-28 09:15:25,799 INFO L704 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2021-12-28 09:15:25,799 INFO L587 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2021-12-28 09:15:25,799 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-28 09:15:25,799 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 242 states and 338 transitions. [2021-12-28 09:15:25,800 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 240 [2021-12-28 09:15:25,801 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:15:25,801 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:15:25,801 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:15:25,801 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:15:25,801 INFO L791 eck$LassoCheckResult]: Stem: 759#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 760#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_~cond~0#1; 773#L85-1 [2021-12-28 09:15:25,801 INFO L793 eck$LassoCheckResult]: Loop: 773#L85-1 assume !false;main_~cond~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1; 836#L28 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0; 833#L43 assume !(0 != main_~p1~0#1); 829#L43-2 assume !(0 != main_~p2~0#1); 826#L47-1 assume !(0 != main_~p3~0#1); 820#L51-1 assume !(0 != main_~p4~0#1); 795#L55-1 assume !(0 != main_~p5~0#1); 796#L59-1 assume !(0 != main_~p1~0#1); 853#L65-1 assume !(0 != main_~p2~0#1); 842#L70-1 assume !(0 != main_~p3~0#1); 821#L75-1 assume !(0 != main_~p4~0#1); 823#L80-1 assume !(0 != main_~p5~0#1); 773#L85-1 [2021-12-28 09:15:25,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:25,804 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-12-28 09:15:25,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:25,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045500644] [2021-12-28 09:15:25,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:25,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:25,810 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:25,815 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:25,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:25,816 INFO L85 PathProgramCache]: Analyzing trace with hash 29816563, now seen corresponding path program 1 times [2021-12-28 09:15:25,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:25,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095444263] [2021-12-28 09:15:25,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:25,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:25,821 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:25,826 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:25,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:25,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1243965365, now seen corresponding path program 1 times [2021-12-28 09:15:25,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:25,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759214776] [2021-12-28 09:15:25,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:25,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:25,835 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:25,842 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:26,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.12 09:15:26 BoogieIcfgContainer [2021-12-28 09:15:26,015 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-28 09:15:26,015 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 09:15:26,015 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 09:15:26,016 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 09:15:26,016 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:15:25" (3/4) ... [2021-12-28 09:15:26,018 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-28 09:15:26,048 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 09:15:26,048 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 09:15:26,049 INFO L158 Benchmark]: Toolchain (without parser) took 1624.98ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 29.8MB in the beginning and 28.1MB in the end (delta: 1.7MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2021-12-28 09:15:26,049 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 52.4MB. Free memory was 34.8MB in the beginning and 34.8MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:15:26,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.37ms. Allocated memory is still 52.4MB. Free memory was 29.6MB in the beginning and 33.3MB in the end (delta: -3.7MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2021-12-28 09:15:26,050 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.14ms. Allocated memory is still 52.4MB. Free memory was 33.3MB in the beginning and 31.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:15:26,050 INFO L158 Benchmark]: Boogie Preprocessor took 27.93ms. Allocated memory is still 52.4MB. Free memory was 31.9MB in the beginning and 30.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 09:15:26,051 INFO L158 Benchmark]: RCFGBuilder took 297.59ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 30.6MB in the beginning and 46.6MB in the end (delta: -16.0MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2021-12-28 09:15:26,051 INFO L158 Benchmark]: BuchiAutomizer took 992.14ms. Allocated memory is still 65.0MB. Free memory was 46.4MB in the beginning and 30.2MB in the end (delta: 16.2MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2021-12-28 09:15:26,052 INFO L158 Benchmark]: Witness Printer took 33.00ms. Allocated memory is still 65.0MB. Free memory was 30.2MB in the beginning and 28.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 09:15:26,053 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 52.4MB. Free memory was 34.8MB in the beginning and 34.8MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 236.37ms. Allocated memory is still 52.4MB. Free memory was 29.6MB in the beginning and 33.3MB in the end (delta: -3.7MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.14ms. Allocated memory is still 52.4MB. Free memory was 33.3MB in the beginning and 31.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.93ms. Allocated memory is still 52.4MB. Free memory was 31.9MB in the beginning and 30.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 297.59ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 30.6MB in the beginning and 46.6MB in the end (delta: -16.0MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * BuchiAutomizer took 992.14ms. Allocated memory is still 65.0MB. Free memory was 46.4MB in the beginning and 30.2MB in the end (delta: 16.2MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * Witness Printer took 33.00ms. Allocated memory is still 65.0MB. Free memory was 30.2MB in the beginning and 28.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 242 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 242 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 89 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 89 mSDsluCounter, 277 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 100 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 177 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI4 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 26]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@72f84e6b=0, p3=0, lk3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@713c6a5c=0, lk5=0, p1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@54f2cfef=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4086e5aa=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@13b0fa17=0, NULL=1, \result=0, cond=4, p5=0, p4=0, lk2=0, NULL=0, lk4=0, p2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@460e21a7=4, lk1=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 26]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L24] int cond; Loop: [L26] COND TRUE 1 [L27] cond = __VERIFIER_nondet_int() [L28] COND FALSE !(cond == 0) [L31] lk1 = 0 [L33] lk2 = 0 [L35] lk3 = 0 [L37] lk4 = 0 [L39] lk5 = 0 [L43] COND FALSE !(p1 != 0) [L47] COND FALSE !(p2 != 0) [L51] COND FALSE !(p3 != 0) [L55] COND FALSE !(p4 != 0) [L59] COND FALSE !(p5 != 0) [L65] COND FALSE !(p1 != 0) [L70] COND FALSE !(p2 != 0) [L75] COND FALSE !(p3 != 0) [L80] COND FALSE !(p4 != 0) [L85] COND FALSE !(p5 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-28 09:15:26,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)