./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:57:27,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:57:27,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:57:27,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:57:27,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:57:27,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:57:27,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:57:27,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:57:27,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:57:27,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:57:27,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:57:27,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:57:27,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:57:27,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:57:27,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:57:27,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:57:27,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:57:27,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:57:27,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:57:27,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:57:27,458 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:57:27,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:57:27,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:57:27,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:57:27,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:57:27,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:57:27,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:57:27,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:57:27,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:57:27,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:57:27,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:57:27,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:57:27,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:57:27,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:57:27,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:57:27,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:57:27,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:57:27,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:57:27,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:57:27,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:57:27,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:57:27,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:57:27,477 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:57:27,495 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:57:27,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:57:27,499 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:57:27,499 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:57:27,499 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:57:27,500 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:57:27,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:57:27,500 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:57:27,500 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:57:27,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:57:27,501 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:57:27,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:57:27,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:57:27,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:57:27,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:57:27,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:57:27,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:57:27,502 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:57:27,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:57:27,504 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:57:27,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:57:27,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:57:27,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:57:27,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:57:27,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:57:27,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:57:27,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:57:27,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:57:27,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:57:27,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:57:27,506 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:57:27,506 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:57:27,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:57:27,506 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 [2022-07-13 21:57:27,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:57:27,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:57:27,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:57:27,737 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:57:27,738 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:57:27,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i [2022-07-13 21:57:27,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9c3d1f1d/3e0b112bd9e647ce9a593deeeb7c689c/FLAG23b2517df [2022-07-13 21:57:28,110 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:57:28,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_46-escape_racefree.i [2022-07-13 21:57:28,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9c3d1f1d/3e0b112bd9e647ce9a593deeeb7c689c/FLAG23b2517df [2022-07-13 21:57:28,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9c3d1f1d/3e0b112bd9e647ce9a593deeeb7c689c [2022-07-13 21:57:28,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:57:28,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:57:28,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:57:28,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:57:28,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:57:28,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:57:28" (1/1) ... [2022-07-13 21:57:28,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc8438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:57:28, skipping insertion in model container [2022-07-13 21:57:28,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:57:28" (1/1) ... [2022-07-13 21:57:28,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:57:28,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:57:28,816 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/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2022-07-13 21:57:28,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:57:28,845 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:57:28,882 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/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2022-07-13 21:57:28,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:57:28,917 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:57:28,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:57:28 WrapperNode [2022-07-13 21:57:28,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:57:28,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:57:28,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:57:28,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:57:28,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:57:28" (1/1) ... [2022-07-13 21:57:28,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:57:28" (1/1) ... [2022-07-13 21:57:28,971 INFO L137 Inliner]: procedures = 170, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-07-13 21:57:28,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:57:28,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:57:28,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:57:28,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:57:28,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:57:28" (1/1) ... [2022-07-13 21:57:28,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:57:28" (1/1) ... [2022-07-13 21:57:28,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:57:28" (1/1) ... [2022-07-13 21:57:28,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:57:28" (1/1) ... [2022-07-13 21:57:28,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:57:28" (1/1) ... [2022-07-13 21:57:29,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:57:28" (1/1) ... [2022-07-13 21:57:29,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:57:28" (1/1) ... [2022-07-13 21:57:29,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:57:29,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:57:29,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:57:29,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:57:29,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:57:28" (1/1) ... [2022-07-13 21:57:29,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:57:29,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:57:29,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 21:57:29,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 21:57:29,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 21:57:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:57:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-13 21:57:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:57:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:57:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-13 21:57:29,079 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-13 21:57:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:57:29,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:57:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:57:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:57:29,081 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:57:29,198 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:57:29,199 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:57:29,376 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:57:29,381 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:57:29,382 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-13 21:57:29,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:57:29 BoogieIcfgContainer [2022-07-13 21:57:29,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:57:29,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:57:29,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:57:29,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:57:29,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:57:28" (1/3) ... [2022-07-13 21:57:29,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b613be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:57:29, skipping insertion in model container [2022-07-13 21:57:29,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:57:28" (2/3) ... [2022-07-13 21:57:29,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b613be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:57:29, skipping insertion in model container [2022-07-13 21:57:29,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:57:29" (3/3) ... [2022-07-13 21:57:29,399 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_46-escape_racefree.i [2022-07-13 21:57:29,402 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:57:29,409 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:57:29,410 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 21:57:29,410 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:57:29,441 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-13 21:57:29,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 110 transitions, 228 flow [2022-07-13 21:57:29,496 INFO L129 PetriNetUnfolder]: 9/109 cut-off events. [2022-07-13 21:57:29,496 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-13 21:57:29,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 109 events. 9/109 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 158 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 57. Up to 3 conditions per place. [2022-07-13 21:57:29,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 110 transitions, 228 flow [2022-07-13 21:57:29,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 99 transitions, 201 flow [2022-07-13 21:57:29,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:57:29,515 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6a2ab831, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7643282a [2022-07-13 21:57:29,515 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:57:29,533 INFO L129 PetriNetUnfolder]: 4/88 cut-off events. [2022-07-13 21:57:29,538 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:57:29,538 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:57:29,539 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:57:29,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 21:57:29,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:57:29,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1929624586, now seen corresponding path program 1 times [2022-07-13 21:57:29,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:57:29,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229154759] [2022-07-13 21:57:29,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:57:29,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:57:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:57:29,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:57:29,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:57:29,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229154759] [2022-07-13 21:57:29,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229154759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:57:29,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:57:29,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:57:29,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039648866] [2022-07-13 21:57:29,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:57:29,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:57:29,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:57:29,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:57:29,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:57:29,942 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 110 [2022-07-13 21:57:29,947 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 99 transitions, 201 flow. Second operand has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 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) [2022-07-13 21:57:29,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:57:29,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 110 [2022-07-13 21:57:29,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:57:30,242 INFO L129 PetriNetUnfolder]: 41/308 cut-off events. [2022-07-13 21:57:30,243 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:57:30,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 308 events. 41/308 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1418 event pairs, 10 based on Foata normal form. 96/401 useless extension candidates. Maximal degree in co-relation 370. Up to 29 conditions per place. [2022-07-13 21:57:30,246 INFO L132 encePairwiseOnDemand]: 91/110 looper letters, 28 selfloop transitions, 4 changer transitions 38/120 dead transitions. [2022-07-13 21:57:30,246 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 120 transitions, 375 flow [2022-07-13 21:57:30,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:57:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 21:57:30,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 948 transitions. [2022-07-13 21:57:30,259 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6155844155844156 [2022-07-13 21:57:30,260 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 948 transitions. [2022-07-13 21:57:30,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 948 transitions. [2022-07-13 21:57:30,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:57:30,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 948 transitions. [2022-07-13 21:57:30,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 67.71428571428571) internal successors, (948), 14 states have internal predecessors, (948), 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) [2022-07-13 21:57:30,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 110.0) internal successors, (1650), 15 states have internal predecessors, (1650), 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) [2022-07-13 21:57:30,284 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 110.0) internal successors, (1650), 15 states have internal predecessors, (1650), 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) [2022-07-13 21:57:30,285 INFO L186 Difference]: Start difference. First operand has 94 places, 99 transitions, 201 flow. Second operand 14 states and 948 transitions. [2022-07-13 21:57:30,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 120 transitions, 375 flow [2022-07-13 21:57:30,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 120 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:57:30,291 INFO L242 Difference]: Finished difference. Result has 112 places, 82 transitions, 190 flow [2022-07-13 21:57:30,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=190, PETRI_PLACES=112, PETRI_TRANSITIONS=82} [2022-07-13 21:57:30,295 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 18 predicate places. [2022-07-13 21:57:30,296 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 82 transitions, 190 flow [2022-07-13 21:57:30,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 63.111111111111114) internal successors, (568), 9 states have internal predecessors, (568), 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) [2022-07-13 21:57:30,296 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:57:30,297 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:57:30,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:57:30,297 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 21:57:30,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:57:30,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2129046964, now seen corresponding path program 1 times [2022-07-13 21:57:30,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:57:30,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968593239] [2022-07-13 21:57:30,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:57:30,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:57:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:57:30,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:57:30,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:57:30,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968593239] [2022-07-13 21:57:30,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968593239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:57:30,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:57:30,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:57:30,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455480306] [2022-07-13 21:57:30,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:57:30,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:57:30,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:57:30,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:57:30,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:57:30,422 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 110 [2022-07-13 21:57:30,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 82 transitions, 190 flow. Second operand has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 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) [2022-07-13 21:57:30,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:57:30,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 110 [2022-07-13 21:57:30,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:57:30,480 INFO L129 PetriNetUnfolder]: 0/86 cut-off events. [2022-07-13 21:57:30,480 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 21:57:30,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 86 events. 0/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 7/93 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2022-07-13 21:57:30,481 INFO L132 encePairwiseOnDemand]: 105/110 looper letters, 16 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2022-07-13 21:57:30,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 82 transitions, 232 flow [2022-07-13 21:57:30,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:57:30,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 21:57:30,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 403 transitions. [2022-07-13 21:57:30,493 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7327272727272728 [2022-07-13 21:57:30,494 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 403 transitions. [2022-07-13 21:57:30,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 403 transitions. [2022-07-13 21:57:30,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:57:30,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 403 transitions. [2022-07-13 21:57:30,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 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) [2022-07-13 21:57:30,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 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) [2022-07-13 21:57:30,496 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 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) [2022-07-13 21:57:30,496 INFO L186 Difference]: Start difference. First operand has 112 places, 82 transitions, 190 flow. Second operand 5 states and 403 transitions. [2022-07-13 21:57:30,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 82 transitions, 232 flow [2022-07-13 21:57:30,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 82 transitions, 212 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-07-13 21:57:30,499 INFO L242 Difference]: Finished difference. Result has 90 places, 82 transitions, 180 flow [2022-07-13 21:57:30,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2022-07-13 21:57:30,500 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, -4 predicate places. [2022-07-13 21:57:30,500 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 180 flow [2022-07-13 21:57:30,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.83333333333333) internal successors, (473), 6 states have internal predecessors, (473), 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) [2022-07-13 21:57:30,500 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:57:30,501 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:57:30,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:57:30,501 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 21:57:30,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:57:30,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1261698595, now seen corresponding path program 1 times [2022-07-13 21:57:30,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:57:30,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112357262] [2022-07-13 21:57:30,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:57:30,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:57:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:57:30,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:57:30,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:57:30,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112357262] [2022-07-13 21:57:30,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112357262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:57:30,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:57:30,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-13 21:57:30,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799113419] [2022-07-13 21:57:30,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:57:30,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 21:57:30,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:57:30,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 21:57:30,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:57:30,786 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 110 [2022-07-13 21:57:30,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 180 flow. Second operand has 17 states, 17 states have (on average 54.35294117647059) internal successors, (924), 17 states have internal predecessors, (924), 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) [2022-07-13 21:57:30,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:57:30,787 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 110 [2022-07-13 21:57:30,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:57:31,305 INFO L129 PetriNetUnfolder]: 0/84 cut-off events. [2022-07-13 21:57:31,305 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-13 21:57:31,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 84 events. 0/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 0. Up to 19 conditions per place. [2022-07-13 21:57:31,306 INFO L132 encePairwiseOnDemand]: 90/110 looper letters, 0 selfloop transitions, 0 changer transitions 80/80 dead transitions. [2022-07-13 21:57:31,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 80 transitions, 254 flow [2022-07-13 21:57:31,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 21:57:31,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-13 21:57:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1132 transitions. [2022-07-13 21:57:31,310 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.49004329004329006 [2022-07-13 21:57:31,310 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1132 transitions. [2022-07-13 21:57:31,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1132 transitions. [2022-07-13 21:57:31,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:57:31,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1132 transitions. [2022-07-13 21:57:31,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 53.904761904761905) internal successors, (1132), 21 states have internal predecessors, (1132), 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) [2022-07-13 21:57:31,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 110.0) internal successors, (2420), 22 states have internal predecessors, (2420), 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) [2022-07-13 21:57:31,318 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 110.0) internal successors, (2420), 22 states have internal predecessors, (2420), 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) [2022-07-13 21:57:31,318 INFO L186 Difference]: Start difference. First operand has 90 places, 82 transitions, 180 flow. Second operand 21 states and 1132 transitions. [2022-07-13 21:57:31,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 80 transitions, 254 flow [2022-07-13 21:57:31,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 80 transitions, 248 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-13 21:57:31,320 INFO L242 Difference]: Finished difference. Result has 105 places, 0 transitions, 0 flow [2022-07-13 21:57:31,321 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=0, PETRI_PLACES=105, PETRI_TRANSITIONS=0} [2022-07-13 21:57:31,322 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2022-07-13 21:57:31,323 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 0 transitions, 0 flow [2022-07-13 21:57:31,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 54.35294117647059) internal successors, (924), 17 states have internal predecessors, (924), 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) [2022-07-13 21:57:31,325 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-13 21:57:31,326 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-07-13 21:57:31,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:57:31,326 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-13 21:57:31,330 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 21:57:31,330 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 21:57:31,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:57:31 BasicIcfg [2022-07-13 21:57:31,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 21:57:31,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 21:57:31,339 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 21:57:31,339 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 21:57:31,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:57:29" (3/4) ... [2022-07-13 21:57:31,342 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 21:57:31,347 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-07-13 21:57:31,352 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-07-13 21:57:31,352 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-13 21:57:31,352 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 21:57:31,353 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 21:57:31,377 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 21:57:31,377 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 21:57:31,378 INFO L158 Benchmark]: Toolchain (without parser) took 2874.34ms. Allocated memory was 96.5MB in the beginning and 153.1MB in the end (delta: 56.6MB). Free memory was 66.3MB in the beginning and 99.8MB in the end (delta: -33.5MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2022-07-13 21:57:31,378 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory was 53.8MB in the beginning and 53.8MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:57:31,378 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.39ms. Allocated memory is still 96.5MB. Free memory was 66.1MB in the beginning and 62.9MB in the end (delta: 3.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 21:57:31,379 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.13ms. Allocated memory is still 96.5MB. Free memory was 62.6MB in the beginning and 60.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:57:31,379 INFO L158 Benchmark]: Boogie Preprocessor took 38.75ms. Allocated memory is still 96.5MB. Free memory was 60.8MB in the beginning and 59.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:57:31,379 INFO L158 Benchmark]: RCFGBuilder took 379.78ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 59.3MB in the beginning and 99.5MB in the end (delta: -40.3MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2022-07-13 21:57:31,380 INFO L158 Benchmark]: TraceAbstraction took 1945.52ms. Allocated memory was 123.7MB in the beginning and 153.1MB in the end (delta: 29.4MB). Free memory was 99.0MB in the beginning and 101.9MB in the end (delta: -2.9MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2022-07-13 21:57:31,380 INFO L158 Benchmark]: Witness Printer took 38.48ms. Allocated memory is still 153.1MB. Free memory was 101.9MB in the beginning and 99.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:57:31,381 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory was 53.8MB in the beginning and 53.8MB in the end (delta: 27.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 413.39ms. Allocated memory is still 96.5MB. Free memory was 66.1MB in the beginning and 62.9MB in the end (delta: 3.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.13ms. Allocated memory is still 96.5MB. Free memory was 62.6MB in the beginning and 60.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.75ms. Allocated memory is still 96.5MB. Free memory was 60.8MB in the beginning and 59.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 379.78ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 59.3MB in the beginning and 99.5MB in the end (delta: -40.3MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1945.52ms. Allocated memory was 123.7MB in the beginning and 153.1MB in the end (delta: 29.4MB). Free memory was 99.0MB in the beginning and 101.9MB in the end (delta: -2.9MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. * Witness Printer took 38.48ms. Allocated memory is still 153.1MB. Free memory was 101.9MB in the beginning and 99.8MB 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: - PositiveResult [Line: 691]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 131 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 185 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 185 mSDsluCounter, 410 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 355 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 385 IncrementalHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 57 mSDtfsCounter, 385 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=201occurred in iteration=0, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 908 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-13 21:57:31,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE