./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-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 ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 20:40:57,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:40:57,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:40:57,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:40:57,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:40:57,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:40:57,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:40:57,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:40:57,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:40:57,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:40:57,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:40:57,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:40:57,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:40:57,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:40:57,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:40:57,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:40:57,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:40:57,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:40:57,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:40:57,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:40:57,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:40:57,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:40:57,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:40:57,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:40:57,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:40:57,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:40:57,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:40:57,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:40:57,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:40:57,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:40:57,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:40:57,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:40:57,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:40:57,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:40:57,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:40:57,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:40:57,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:40:57,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:40:57,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:40:57,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:40:57,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:40:57,543 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:40:57,585 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:40:57,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:40:57,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:40:57,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:40:57,587 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:40:57,588 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:40:57,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:40:57,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:40:57,589 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:40:57,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:40:57,590 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:40:57,590 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:40:57,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:40:57,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:40:57,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:40:57,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:40:57,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:40:57,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:40:57,591 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:40:57,591 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:40:57,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:40:57,592 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:40:57,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:40:57,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:40:57,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:40:57,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:40:57,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:40:57,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:40:57,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:40:57,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:40:57,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:40:57,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:40:57,594 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:40:57,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:40:57,594 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:40:57,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:40:57,595 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:40:57,595 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:40:57,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:40:57,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:40:57,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:40:57,920 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:40:57,920 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:40:57,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-08-31 20:40:59,028 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:40:59,283 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:40:59,283 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-08-31 20:40:59,296 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fd0486bb/d49b4b3e16b34c1e993be7a1748e20e9/FLAGf5cd85c4f [2023-08-31 20:40:59,311 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fd0486bb/d49b4b3e16b34c1e993be7a1748e20e9 [2023-08-31 20:40:59,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:40:59,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:40:59,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:40:59,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:40:59,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:40:59,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:40:59" (1/1) ... [2023-08-31 20:40:59,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23ae8c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:59, skipping insertion in model container [2023-08-31 20:40:59,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:40:59" (1/1) ... [2023-08-31 20:40:59,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:40:59,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:40:59,649 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i[30176,30189] [2023-08-31 20:40:59,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:40:59,715 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:40:59,776 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i[30176,30189] [2023-08-31 20:40:59,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:40:59,838 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:40:59,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:59 WrapperNode [2023-08-31 20:40:59,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:40:59,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:40:59,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:40:59,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:40:59,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:59" (1/1) ... [2023-08-31 20:40:59,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:59" (1/1) ... [2023-08-31 20:40:59,904 INFO L138 Inliner]: procedures = 172, calls = 43, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 239 [2023-08-31 20:40:59,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:40:59,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:40:59,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:40:59,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:40:59,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:59" (1/1) ... [2023-08-31 20:40:59,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:59" (1/1) ... [2023-08-31 20:40:59,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:59" (1/1) ... [2023-08-31 20:40:59,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:59" (1/1) ... [2023-08-31 20:40:59,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:59" (1/1) ... [2023-08-31 20:40:59,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:59" (1/1) ... [2023-08-31 20:40:59,964 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:59" (1/1) ... [2023-08-31 20:40:59,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:59" (1/1) ... [2023-08-31 20:40:59,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:40:59,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:40:59,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:40:59,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:40:59,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:59" (1/1) ... [2023-08-31 20:40:59,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:40:59,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:41:00,014 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) [2023-08-31 20:41:00,040 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 [2023-08-31 20:41:00,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:41:00,056 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-31 20:41:00,057 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-31 20:41:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:41:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:41:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:41:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:41:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-31 20:41:00,058 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-31 20:41:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:41:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:41:00,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:41:00,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:41:00,060 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 20:41:00,265 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:41:00,266 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:41:00,704 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:41:00,713 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:41:00,714 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-31 20:41:00,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:41:00 BoogieIcfgContainer [2023-08-31 20:41:00,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:41:00,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:41:00,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:41:00,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:41:00,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:40:59" (1/3) ... [2023-08-31 20:41:00,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b1b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:41:00, skipping insertion in model container [2023-08-31 20:41:00,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:59" (2/3) ... [2023-08-31 20:41:00,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b1b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:41:00, skipping insertion in model container [2023-08-31 20:41:00,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:41:00" (3/3) ... [2023-08-31 20:41:00,725 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_03-munge_racing.i [2023-08-31 20:41:00,732 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:41:00,740 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:41:00,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-31 20:41:00,741 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:41:00,834 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:41:00,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 246 transitions, 514 flow [2023-08-31 20:41:01,003 INFO L130 PetriNetUnfolder]: 58/458 cut-off events. [2023-08-31 20:41:01,003 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 20:41:01,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 458 events. 58/458 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2203 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 249. Up to 8 conditions per place. [2023-08-31 20:41:01,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 246 transitions, 514 flow [2023-08-31 20:41:01,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 246 transitions, 514 flow [2023-08-31 20:41:01,033 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:01,040 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 246 transitions, 514 flow [2023-08-31 20:41:01,043 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 246 transitions, 514 flow [2023-08-31 20:41:01,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 246 transitions, 514 flow [2023-08-31 20:41:01,107 INFO L130 PetriNetUnfolder]: 58/458 cut-off events. [2023-08-31 20:41:01,107 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 20:41:01,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 458 events. 58/458 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2203 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 249. Up to 8 conditions per place. [2023-08-31 20:41:01,137 INFO L119 LiptonReduction]: Number of co-enabled transitions 27216 [2023-08-31 20:41:05,376 INFO L134 LiptonReduction]: Checked pairs total: 73093 [2023-08-31 20:41:05,377 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-08-31 20:41:05,390 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:05,396 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@79044661, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:05,397 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 20:41:05,403 INFO L130 PetriNetUnfolder]: 4/36 cut-off events. [2023-08-31 20:41:05,403 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:41:05,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:05,404 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:41:05,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:05,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:05,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1848071123, now seen corresponding path program 1 times [2023-08-31 20:41:05,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:05,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608078788] [2023-08-31 20:41:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:05,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:05,544 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:05,587 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:05,593 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:05,594 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 20:41:05,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 20:41:05,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:41:05,598 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:05,604 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 20:41:05,606 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:05,606 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:41:05,663 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:41:05,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 396 transitions, 840 flow [2023-08-31 20:41:05,951 INFO L130 PetriNetUnfolder]: 197/1380 cut-off events. [2023-08-31 20:41:05,952 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-31 20:41:05,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1477 conditions, 1380 events. 197/1380 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9002 event pairs, 1 based on Foata normal form. 0/1124 useless extension candidates. Maximal degree in co-relation 831. Up to 32 conditions per place. [2023-08-31 20:41:05,976 INFO L82 GeneralOperation]: Start removeDead. Operand has 345 places, 396 transitions, 840 flow [2023-08-31 20:41:05,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 396 transitions, 840 flow [2023-08-31 20:41:05,991 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:05,991 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 345 places, 396 transitions, 840 flow [2023-08-31 20:41:05,992 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 345 places, 396 transitions, 840 flow [2023-08-31 20:41:05,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 396 transitions, 840 flow [2023-08-31 20:41:06,377 INFO L130 PetriNetUnfolder]: 197/1380 cut-off events. [2023-08-31 20:41:06,377 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-31 20:41:06,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1477 conditions, 1380 events. 197/1380 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9002 event pairs, 1 based on Foata normal form. 0/1124 useless extension candidates. Maximal degree in co-relation 831. Up to 32 conditions per place. [2023-08-31 20:41:06,476 INFO L119 LiptonReduction]: Number of co-enabled transitions 98784 [2023-08-31 20:41:11,040 INFO L134 LiptonReduction]: Checked pairs total: 313944 [2023-08-31 20:41:11,040 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-08-31 20:41:11,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:11,043 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@79044661, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:11,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 20:41:11,053 INFO L130 PetriNetUnfolder]: 26/146 cut-off events. [2023-08-31 20:41:11,054 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-31 20:41:11,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:11,054 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:41:11,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:11,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:11,055 INFO L85 PathProgramCache]: Analyzing trace with hash 73288061, now seen corresponding path program 1 times [2023-08-31 20:41:11,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:11,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421941980] [2023-08-31 20:41:11,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:11,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:11,080 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:11,105 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:11,106 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:11,106 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 20:41:11,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 20:41:11,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:41:11,107 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:11,107 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 20:41:11,107 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:11,108 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:41:11,153 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:41:11,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 471 places, 546 transitions, 1170 flow [2023-08-31 20:41:12,336 INFO L130 PetriNetUnfolder]: 664/4032 cut-off events. [2023-08-31 20:41:12,337 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2023-08-31 20:41:12,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4483 conditions, 4032 events. 664/4032 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 32209 event pairs, 52 based on Foata normal form. 0/3353 useless extension candidates. Maximal degree in co-relation 2504. Up to 192 conditions per place. [2023-08-31 20:41:12,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 471 places, 546 transitions, 1170 flow [2023-08-31 20:41:12,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 471 places, 546 transitions, 1170 flow [2023-08-31 20:41:12,534 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:12,535 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 471 places, 546 transitions, 1170 flow [2023-08-31 20:41:12,535 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 471 places, 546 transitions, 1170 flow [2023-08-31 20:41:12,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 471 places, 546 transitions, 1170 flow [2023-08-31 20:41:13,545 INFO L130 PetriNetUnfolder]: 664/4032 cut-off events. [2023-08-31 20:41:13,546 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2023-08-31 20:41:13,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4483 conditions, 4032 events. 664/4032 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 32209 event pairs, 52 based on Foata normal form. 0/3353 useless extension candidates. Maximal degree in co-relation 2504. Up to 192 conditions per place. [2023-08-31 20:41:14,047 INFO L119 LiptonReduction]: Number of co-enabled transitions 214704 [2023-08-31 20:41:18,849 INFO L134 LiptonReduction]: Checked pairs total: 728132 [2023-08-31 20:41:18,850 INFO L136 LiptonReduction]: Total number of compositions: 302 [2023-08-31 20:41:18,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:18,853 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@79044661, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:18,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 20:41:18,872 INFO L130 PetriNetUnfolder]: 58/297 cut-off events. [2023-08-31 20:41:18,873 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-08-31 20:41:18,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:18,873 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:41:18,874 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:18,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:18,874 INFO L85 PathProgramCache]: Analyzing trace with hash -200706582, now seen corresponding path program 1 times [2023-08-31 20:41:18,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:18,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261831632] [2023-08-31 20:41:18,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:18,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:18,901 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:18,927 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:18,928 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:18,928 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 20:41:18,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 20:41:18,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:41:18,929 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:18,930 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 20:41:18,930 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:18,930 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:41:18,976 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-31 20:41:18,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 597 places, 696 transitions, 1504 flow [2023-08-31 20:41:23,688 INFO L130 PetriNetUnfolder]: 2647/13382 cut-off events. [2023-08-31 20:41:23,688 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2023-08-31 20:41:24,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15547 conditions, 13382 events. 2647/13382 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 131952 event pairs, 626 based on Foata normal form. 0/11378 useless extension candidates. Maximal degree in co-relation 8151. Up to 1024 conditions per place. [2023-08-31 20:41:24,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 597 places, 696 transitions, 1504 flow [2023-08-31 20:41:24,329 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 597 places, 696 transitions, 1504 flow [2023-08-31 20:41:24,329 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:24,329 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 597 places, 696 transitions, 1504 flow [2023-08-31 20:41:24,330 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 597 places, 696 transitions, 1504 flow [2023-08-31 20:41:24,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 597 places, 696 transitions, 1504 flow [2023-08-31 20:41:28,595 INFO L130 PetriNetUnfolder]: 2647/13382 cut-off events. [2023-08-31 20:41:28,595 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2023-08-31 20:41:28,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15547 conditions, 13382 events. 2647/13382 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 131952 event pairs, 626 based on Foata normal form. 0/11378 useless extension candidates. Maximal degree in co-relation 8151. Up to 1024 conditions per place. [2023-08-31 20:41:30,110 INFO L119 LiptonReduction]: Number of co-enabled transitions 374976 [2023-08-31 20:41:36,277 INFO L134 LiptonReduction]: Checked pairs total: 1299176 [2023-08-31 20:41:36,277 INFO L136 LiptonReduction]: Total number of compositions: 376 [2023-08-31 20:41:36,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:36,280 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@79044661, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:36,280 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 20:41:36,325 INFO L130 PetriNetUnfolder]: 112/541 cut-off events. [2023-08-31 20:41:36,325 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-08-31 20:41:36,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:36,326 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:41:36,326 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:36,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:36,326 INFO L85 PathProgramCache]: Analyzing trace with hash -909755304, now seen corresponding path program 1 times [2023-08-31 20:41:36,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:36,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515355073] [2023-08-31 20:41:36,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:36,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:36,368 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:36,392 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:36,392 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:36,393 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 20:41:36,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 20:41:36,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:41:36,393 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:36,394 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 20:41:36,394 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:36,394 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:41:36,467 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-08-31 20:41:36,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 723 places, 846 transitions, 1842 flow [2023-08-31 20:41:57,073 INFO L130 PetriNetUnfolder]: 11762/50166 cut-off events. [2023-08-31 20:41:57,074 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2023-08-31 20:42:00,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60592 conditions, 50166 events. 11762/50166 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 607966 event pairs, 3676 based on Foata normal form. 0/43343 useless extension candidates. Maximal degree in co-relation 30311. Up to 5120 conditions per place. [2023-08-31 20:42:00,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 723 places, 846 transitions, 1842 flow [2023-08-31 20:42:02,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 723 places, 846 transitions, 1842 flow [2023-08-31 20:42:02,027 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:02,027 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 723 places, 846 transitions, 1842 flow [2023-08-31 20:42:02,028 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 723 places, 846 transitions, 1842 flow [2023-08-31 20:42:02,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 723 places, 846 transitions, 1842 flow [2023-08-31 20:42:21,811 INFO L130 PetriNetUnfolder]: 11762/50166 cut-off events. [2023-08-31 20:42:21,811 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2023-08-31 20:42:25,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60592 conditions, 50166 events. 11762/50166 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 607966 event pairs, 3676 based on Foata normal form. 0/43343 useless extension candidates. Maximal degree in co-relation 30311. Up to 5120 conditions per place. [2023-08-31 20:42:31,495 INFO L119 LiptonReduction]: Number of co-enabled transitions 579600 [2023-08-31 20:42:37,593 INFO L134 LiptonReduction]: Checked pairs total: 2037376 [2023-08-31 20:42:37,594 INFO L136 LiptonReduction]: Total number of compositions: 454 [2023-08-31 20:42:37,596 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:37,596 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@79044661, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:37,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-31 20:42:37,699 INFO L130 PetriNetUnfolder]: 226/1010 cut-off events. [2023-08-31 20:42:37,699 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2023-08-31 20:42:37,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:37,699 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:42:37,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:37,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:37,700 INFO L85 PathProgramCache]: Analyzing trace with hash -790403204, now seen corresponding path program 1 times [2023-08-31 20:42:37,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:37,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292794887] [2023-08-31 20:42:37,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:37,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:37,724 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:37,743 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:37,744 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:37,744 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-31 20:42:37,744 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-31 20:42:37,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:42:37,745 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:37,745 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-31 20:42:37,745 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:37,746 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:42:37,808 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-08-31 20:42:37,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 849 places, 996 transitions, 2184 flow