./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.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_84-list2_racing2.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 f70125267ee7251a74a40ef1ba0ea3ced14d0fe45e7a9ea5a666e1eecab0c01c --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 21:07:15,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 21:07:15,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 21:07:15,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 21:07:15,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 21:07:15,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 21:07:15,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 21:07:15,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 21:07:15,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 21:07:15,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 21:07:15,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 21:07:15,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 21:07:15,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 21:07:15,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 21:07:15,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 21:07:15,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 21:07:15,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 21:07:15,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 21:07:15,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 21:07:15,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 21:07:15,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 21:07:15,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 21:07:15,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 21:07:15,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 21:07:15,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 21:07:15,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 21:07:15,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 21:07:15,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 21:07:15,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 21:07:15,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 21:07:15,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 21:07:15,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 21:07:15,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 21:07:15,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 21:07:15,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 21:07:15,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 21:07:15,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 21:07:15,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 21:07:15,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 21:07:15,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 21:07:15,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 21:07:15,701 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 21:07:15,737 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 21:07:15,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 21:07:15,738 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 21:07:15,738 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 21:07:15,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 21:07:15,739 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 21:07:15,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 21:07:15,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 21:07:15,740 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 21:07:15,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 21:07:15,741 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 21:07:15,741 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 21:07:15,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 21:07:15,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 21:07:15,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 21:07:15,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 21:07:15,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 21:07:15,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 21:07:15,743 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 21:07:15,743 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 21:07:15,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 21:07:15,743 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 21:07:15,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 21:07:15,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 21:07:15,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 21:07:15,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 21:07:15,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 21:07:15,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 21:07:15,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 21:07:15,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 21:07:15,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 21:07:15,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 21:07:15,745 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 21:07:15,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 21:07:15,746 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 21:07:15,746 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 21:07:15,746 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 21:07:15,746 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f70125267ee7251a74a40ef1ba0ea3ced14d0fe45e7a9ea5a666e1eecab0c01c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 21:07:16,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 21:07:16,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 21:07:16,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 21:07:16,032 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 21:07:16,033 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 21:07:16,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-08-31 21:07:17,082 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 21:07:17,348 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 21:07:17,348 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-08-31 21:07:17,363 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74c62db40/24491bc1f2414efcbbb8fe59ec8eebbf/FLAG88c1d95ca [2023-08-31 21:07:17,376 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74c62db40/24491bc1f2414efcbbb8fe59ec8eebbf [2023-08-31 21:07:17,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 21:07:17,379 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 21:07:17,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 21:07:17,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 21:07:17,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 21:07:17,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 09:07:17" (1/1) ... [2023-08-31 21:07:17,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@784137c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:17, skipping insertion in model container [2023-08-31 21:07:17,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 09:07:17" (1/1) ... [2023-08-31 21:07:17,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 21:07:17,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 21:07:17,793 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_84-list2_racing2.i[47038,47051] [2023-08-31 21:07:17,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 21:07:17,857 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 21:07:17,898 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_84-list2_racing2.i[47038,47051] [2023-08-31 21:07:17,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 21:07:18,002 INFO L208 MainTranslator]: Completed translation [2023-08-31 21:07:18,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:18 WrapperNode [2023-08-31 21:07:18,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 21:07:18,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 21:07:18,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 21:07:18,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 21:07:18,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:18" (1/1) ... [2023-08-31 21:07:18,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:18" (1/1) ... [2023-08-31 21:07:18,089 INFO L138 Inliner]: procedures = 279, calls = 88, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 595 [2023-08-31 21:07:18,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 21:07:18,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 21:07:18,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 21:07:18,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 21:07:18,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:18" (1/1) ... [2023-08-31 21:07:18,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:18" (1/1) ... [2023-08-31 21:07:18,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:18" (1/1) ... [2023-08-31 21:07:18,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:18" (1/1) ... [2023-08-31 21:07:18,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:18" (1/1) ... [2023-08-31 21:07:18,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:18" (1/1) ... [2023-08-31 21:07:18,175 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:18" (1/1) ... [2023-08-31 21:07:18,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:18" (1/1) ... [2023-08-31 21:07:18,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 21:07:18,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 21:07:18,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 21:07:18,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 21:07:18,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:18" (1/1) ... [2023-08-31 21:07:18,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 21:07:18,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 21:07:18,226 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 21:07:18,251 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 21:07:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 21:07:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-31 21:07:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-31 21:07:18,267 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-31 21:07:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 21:07:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 21:07:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-31 21:07:18,268 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-31 21:07:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 21:07:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 21:07:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 21:07:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 21:07:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-31 21:07:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-31 21:07:18,269 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-31 21:07:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 21:07:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 21:07:18,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 21:07:18,271 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 21:07:18,456 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 21:07:18,458 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 21:07:19,222 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 21:07:19,238 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 21:07:19,238 INFO L302 CfgBuilder]: Removed 29 assume(true) statements. [2023-08-31 21:07:19,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 09:07:19 BoogieIcfgContainer [2023-08-31 21:07:19,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 21:07:19,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 21:07:19,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 21:07:19,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 21:07:19,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 09:07:17" (1/3) ... [2023-08-31 21:07:19,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e95f6da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 09:07:19, skipping insertion in model container [2023-08-31 21:07:19,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:07:18" (2/3) ... [2023-08-31 21:07:19,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e95f6da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 09:07:19, skipping insertion in model container [2023-08-31 21:07:19,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 09:07:19" (3/3) ... [2023-08-31 21:07:19,249 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_84-list2_racing2.i [2023-08-31 21:07:19,256 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 21:07:19,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 21:07:19,265 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2023-08-31 21:07:19,265 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 21:07:19,451 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 21:07:19,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 602 places, 644 transitions, 1330 flow [2023-08-31 21:07:20,307 INFO L130 PetriNetUnfolder]: 189/2264 cut-off events. [2023-08-31 21:07:20,307 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-31 21:07:20,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2325 conditions, 2264 events. 189/2264 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 16595 event pairs, 0 based on Foata normal form. 0/1930 useless extension candidates. Maximal degree in co-relation 1153. Up to 16 conditions per place. [2023-08-31 21:07:20,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 602 places, 644 transitions, 1330 flow [2023-08-31 21:07:20,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 594 places, 636 transitions, 1314 flow [2023-08-31 21:07:20,377 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:07:20,386 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 594 places, 636 transitions, 1314 flow [2023-08-31 21:07:20,388 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 594 places, 636 transitions, 1314 flow [2023-08-31 21:07:20,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 594 places, 636 transitions, 1314 flow [2023-08-31 21:07:21,165 INFO L130 PetriNetUnfolder]: 189/2256 cut-off events. [2023-08-31 21:07:21,166 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-31 21:07:21,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2317 conditions, 2256 events. 189/2256 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 16604 event pairs, 0 based on Foata normal form. 0/1930 useless extension candidates. Maximal degree in co-relation 1145. Up to 16 conditions per place. [2023-08-31 21:07:21,341 INFO L119 LiptonReduction]: Number of co-enabled transitions 194856 [2023-08-31 21:08:22,799 WARN L222 SmtUtils]: Spent 22.42s on a formula simplification. DAG size of input: 289 DAG size of output: 287 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:08:40,788 WARN L222 SmtUtils]: Spent 13.21s on a formula simplification. DAG size of input: 289 DAG size of output: 287 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:08:53,988 WARN L222 SmtUtils]: Spent 13.19s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:08:54,000 INFO L134 LiptonReduction]: Checked pairs total: 1060147 [2023-08-31 21:08:54,000 INFO L136 LiptonReduction]: Total number of compositions: 376 [2023-08-31 21:08:54,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:08:54,017 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;@363d9c5f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:08:54,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-31 21:08:54,023 INFO L130 PetriNetUnfolder]: 0/29 cut-off events. [2023-08-31 21:08:54,023 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 21:08:54,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:08:54,024 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 21:08:54,025 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 21:08:54,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:08:54,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1550871152, now seen corresponding path program 1 times [2023-08-31 21:08:54,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:08:54,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001621142] [2023-08-31 21:08:54,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:08:54,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:08:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:08:54,257 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:08:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:08:54,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:08:54,355 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:08:54,356 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-31 21:08:54,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-31 21:08:54,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-31 21:08:54,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 21:08:54,358 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:08:54,360 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-31 21:08:54,364 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:08:54,365 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 21:08:54,502 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-31 21:08:54,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 928 places, 1004 transitions, 2098 flow [2023-08-31 21:08:59,013 INFO L130 PetriNetUnfolder]: 1213/10174 cut-off events. [2023-08-31 21:08:59,013 INFO L131 PetriNetUnfolder]: For 602/602 co-relation queries the response was YES. [2023-08-31 21:08:59,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10848 conditions, 10174 events. 1213/10174 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 102899 event pairs, 11 based on Foata normal form. 0/8674 useless extension candidates. Maximal degree in co-relation 6375. Up to 192 conditions per place. [2023-08-31 21:08:59,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 928 places, 1004 transitions, 2098 flow [2023-08-31 21:08:59,461 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 920 places, 996 transitions, 2082 flow [2023-08-31 21:08:59,462 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:08:59,462 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 920 places, 996 transitions, 2082 flow [2023-08-31 21:08:59,462 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 920 places, 996 transitions, 2082 flow [2023-08-31 21:08:59,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 920 places, 996 transitions, 2082 flow [2023-08-31 21:09:04,087 INFO L130 PetriNetUnfolder]: 1213/10166 cut-off events. [2023-08-31 21:09:04,088 INFO L131 PetriNetUnfolder]: For 602/602 co-relation queries the response was YES. [2023-08-31 21:09:04,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10840 conditions, 10166 events. 1213/10166 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 103201 event pairs, 11 based on Foata normal form. 0/8674 useless extension candidates. Maximal degree in co-relation 6367. Up to 192 conditions per place. [2023-08-31 21:09:05,510 INFO L119 LiptonReduction]: Number of co-enabled transitions 646296 [2023-08-31 21:10:02,434 WARN L222 SmtUtils]: Spent 12.25s on a formula simplification. DAG size of input: 305 DAG size of output: 303 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:10:13,317 WARN L222 SmtUtils]: Spent 10.88s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:10:40,785 WARN L222 SmtUtils]: Spent 27.47s on a formula simplification. DAG size of input: 305 DAG size of output: 303 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:10:48,766 WARN L222 SmtUtils]: Spent 7.98s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:10:48,782 INFO L134 LiptonReduction]: Checked pairs total: 4045229 [2023-08-31 21:10:48,783 INFO L136 LiptonReduction]: Total number of compositions: 548 [2023-08-31 21:10:48,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:10:48,786 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;@363d9c5f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:10:48,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-31 21:10:48,795 INFO L130 PetriNetUnfolder]: 0/104 cut-off events. [2023-08-31 21:10:48,796 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 21:10:48,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:10:48,796 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 21:10:48,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 21:10:48,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:10:48,797 INFO L85 PathProgramCache]: Analyzing trace with hash -37779217, now seen corresponding path program 1 times [2023-08-31 21:10:48,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:10:48,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764678153] [2023-08-31 21:10:48,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:10:48,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:10:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:10:48,835 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:10:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:10:48,921 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:10:48,921 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:10:48,921 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-31 21:10:48,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-31 21:10:48,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-31 21:10:48,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 21:10:48,922 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:10:48,923 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-31 21:10:48,923 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:10:48,923 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 21:10:49,038 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2023-08-31 21:10:49,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1254 places, 1364 transitions, 2872 flow [2023-08-31 21:11:24,640 INFO L130 PetriNetUnfolder]: 9179/48850 cut-off events. [2023-08-31 21:11:24,640 INFO L131 PetriNetUnfolder]: For 7059/7059 co-relation queries the response was YES. [2023-08-31 21:11:28,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56024 conditions, 48850 events. 9179/48850 cut-off events. For 7059/7059 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 594966 event pairs, 512 based on Foata normal form. 0/42022 useless extension candidates. Maximal degree in co-relation 31001. Up to 2304 conditions per place. [2023-08-31 21:11:28,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 1254 places, 1364 transitions, 2872 flow [2023-08-31 21:11:29,725 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1246 places, 1356 transitions, 2856 flow [2023-08-31 21:11:29,726 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:11:29,726 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1246 places, 1356 transitions, 2856 flow [2023-08-31 21:11:29,726 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1246 places, 1356 transitions, 2856 flow [2023-08-31 21:11:29,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1246 places, 1356 transitions, 2856 flow [2023-08-31 21:12:04,142 INFO L130 PetriNetUnfolder]: 9179/48842 cut-off events. [2023-08-31 21:12:04,142 INFO L131 PetriNetUnfolder]: For 7059/7059 co-relation queries the response was YES. [2023-08-31 21:12:08,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56016 conditions, 48842 events. 9179/48842 cut-off events. For 7059/7059 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 594941 event pairs, 512 based on Foata normal form. 0/42022 useless extension candidates. Maximal degree in co-relation 30993. Up to 2304 conditions per place. [2023-08-31 21:12:15,938 INFO L119 LiptonReduction]: Number of co-enabled transitions 1354320 [2023-08-31 21:13:05,075 WARN L222 SmtUtils]: Spent 10.97s on a formula simplification. DAG size of input: 293 DAG size of output: 289 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:13:13,919 WARN L222 SmtUtils]: Spent 8.84s on a formula simplification that was a NOOP. DAG size: 277 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:13:30,093 WARN L222 SmtUtils]: Spent 16.17s on a formula simplification. DAG size of input: 293 DAG size of output: 289 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 21:13:34,761 INFO L134 LiptonReduction]: Checked pairs total: 8581448 [2023-08-31 21:13:34,761 INFO L136 LiptonReduction]: Total number of compositions: 726 [2023-08-31 21:13:34,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:13:34,765 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;@363d9c5f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:13:34,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-31 21:13:34,787 INFO L130 PetriNetUnfolder]: 15/326 cut-off events. [2023-08-31 21:13:34,788 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-31 21:13:34,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:13:34,788 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 21:13:34,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 21:13:34,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:13:34,789 INFO L85 PathProgramCache]: Analyzing trace with hash 697696080, now seen corresponding path program 1 times [2023-08-31 21:13:34,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:13:34,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043150931] [2023-08-31 21:13:34,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:13:34,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:13:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:13:34,862 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:13:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:13:34,903 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:13:34,904 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:13:34,904 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-31 21:13:34,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-31 21:13:34,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-31 21:13:34,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 21:13:34,905 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:13:34,906 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-31 21:13:34,906 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:13:34,906 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 21:13:35,070 INFO L144 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2023-08-31 21:13:35,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1580 places, 1724 transitions, 3652 flow