./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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_02-simple_racefree.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 b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 18:13:10,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:13:10,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:13:10,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:13:10,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:13:10,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:13:10,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:13:10,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:13:10,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:13:10,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:13:10,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:13:10,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:13:10,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:13:10,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:13:10,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:13:10,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:13:10,495 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:13:10,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:13:10,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:13:10,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:13:10,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:13:10,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:13:10,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:13:10,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:13:10,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:13:10,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:13:10,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:13:10,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:13:10,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:13:10,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:13:10,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:13:10,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:13:10,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:13:10,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:13:10,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:13:10,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:13:10,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:13:10,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:13:10,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:13:10,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:13:10,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:13:10,517 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:13:10,542 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:13:10,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:13:10,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:13:10,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:13:10,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:13:10,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:13:10,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:13:10,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:13:10,545 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:13:10,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:13:10,545 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:13:10,546 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:13:10,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:13:10,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:13:10,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:13:10,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:13:10,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:13:10,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:13:10,547 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:13:10,547 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:13:10,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:13:10,547 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:13:10,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:13:10,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:13:10,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:13:10,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:13:10,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:13:10,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:13:10,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:13:10,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:13:10,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:13:10,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:13:10,549 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:13:10,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:13:10,549 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:13:10,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:13:10,549 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:13:10,549 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:13:10,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:13:10,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:13:10,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:13:10,811 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:13:10,811 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:13:10,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i [2023-08-29 18:13:11,665 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:13:11,894 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:13:11,894 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i [2023-08-29 18:13:11,909 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e99aeeca/d62b3844ef2f40288462b59eb39db70b/FLAG3d9ab1f53 [2023-08-29 18:13:11,932 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e99aeeca/d62b3844ef2f40288462b59eb39db70b [2023-08-29 18:13:11,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:13:11,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:13:11,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:13:11,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:13:11,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:13:11,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:13:11" (1/1) ... [2023-08-29 18:13:11,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0a2eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:11, skipping insertion in model container [2023-08-29 18:13:11,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:13:11" (1/1) ... [2023-08-29 18:13:11,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:13:11,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:13:12,224 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_02-simple_racefree.i[30176,30189] [2023-08-29 18:13:12,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:13:12,253 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:13:12,282 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_02-simple_racefree.i[30176,30189] [2023-08-29 18:13:12,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:13:12,333 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:13:12,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:12 WrapperNode [2023-08-29 18:13:12,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:13:12,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:13:12,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:13:12,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:13:12,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:12" (1/1) ... [2023-08-29 18:13:12,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:12" (1/1) ... [2023-08-29 18:13:12,402 INFO L138 Inliner]: procedures = 170, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2023-08-29 18:13:12,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:13:12,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:13:12,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:13:12,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:13:12,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:12" (1/1) ... [2023-08-29 18:13:12,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:12" (1/1) ... [2023-08-29 18:13:12,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:12" (1/1) ... [2023-08-29 18:13:12,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:12" (1/1) ... [2023-08-29 18:13:12,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:12" (1/1) ... [2023-08-29 18:13:12,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:12" (1/1) ... [2023-08-29 18:13:12,446 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:12" (1/1) ... [2023-08-29 18:13:12,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:12" (1/1) ... [2023-08-29 18:13:12,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:13:12,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:13:12,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:13:12,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:13:12,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:12" (1/1) ... [2023-08-29 18:13:12,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:13:12,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:13:12,478 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) [2023-08-29 18:13:12,496 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 [2023-08-29 18:13:12,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:13:12,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:13:12,504 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:13:12,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:13:12,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:13:12,504 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:13:12,504 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:13:12,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:13:12,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:13:12,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:13:12,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:13:12,505 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 18:13:12,596 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:13:12,598 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:13:12,756 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:13:12,761 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:13:12,761 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-29 18:13:12,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:13:12 BoogieIcfgContainer [2023-08-29 18:13:12,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:13:12,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:13:12,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:13:12,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:13:12,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:13:11" (1/3) ... [2023-08-29 18:13:12,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fbc3b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:13:12, skipping insertion in model container [2023-08-29 18:13:12,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:13:12" (2/3) ... [2023-08-29 18:13:12,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fbc3b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:13:12, skipping insertion in model container [2023-08-29 18:13:12,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:13:12" (3/3) ... [2023-08-29 18:13:12,767 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_02-simple_racefree.i [2023-08-29 18:13:12,772 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:13:12,778 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:13:12,778 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-29 18:13:12,778 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:13:12,838 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 18:13:12,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 132 transitions, 272 flow [2023-08-29 18:13:12,907 INFO L130 PetriNetUnfolder]: 17/173 cut-off events. [2023-08-29 18:13:12,908 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:13:12,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 173 events. 17/173 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 476 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-08-29 18:13:12,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 132 transitions, 272 flow [2023-08-29 18:13:12,916 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 132 transitions, 272 flow [2023-08-29 18:13:12,918 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:13:12,924 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 132 transitions, 272 flow [2023-08-29 18:13:12,925 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 132 transitions, 272 flow [2023-08-29 18:13:12,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 132 transitions, 272 flow [2023-08-29 18:13:12,958 INFO L130 PetriNetUnfolder]: 17/173 cut-off events. [2023-08-29 18:13:12,964 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:13:12,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 173 events. 17/173 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 476 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-08-29 18:13:12,967 INFO L119 LiptonReduction]: Number of co-enabled transitions 4136 [2023-08-29 18:13:15,329 INFO L134 LiptonReduction]: Checked pairs total: 10675 [2023-08-29 18:13:15,329 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-29 18:13:15,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:13:15,343 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;@1c9a52bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:13:15,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-29 18:13:15,346 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2023-08-29 18:13:15,346 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:13:15,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:13:15,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 18:13:15,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-29 18:13:15,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:13:15,350 INFO L85 PathProgramCache]: Analyzing trace with hash 15035669, now seen corresponding path program 1 times [2023-08-29 18:13:15,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:13:15,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431892173] [2023-08-29 18:13:15,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:13:15,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:13:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:13:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:13:15,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:13:15,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431892173] [2023-08-29 18:13:15,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431892173] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:13:15,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:13:15,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:13:15,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914499975] [2023-08-29 18:13:15,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:13:15,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:13:15,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:13:15,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:13:15,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:13:15,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 229 [2023-08-29 18:13:15,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 49 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:15,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:13:15,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 229 [2023-08-29 18:13:15,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:13:15,602 INFO L130 PetriNetUnfolder]: 120/330 cut-off events. [2023-08-29 18:13:15,602 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:13:15,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 330 events. 120/330 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1555 event pairs, 0 based on Foata normal form. 48/325 useless extension candidates. Maximal degree in co-relation 572. Up to 255 conditions per place. [2023-08-29 18:13:15,605 INFO L137 encePairwiseOnDemand]: 216/229 looper letters, 35 selfloop transitions, 2 changer transitions 2/52 dead transitions. [2023-08-29 18:13:15,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 190 flow [2023-08-29 18:13:15,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:13:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:13:15,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 398 transitions. [2023-08-29 18:13:15,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5793304221251819 [2023-08-29 18:13:15,615 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 398 transitions. [2023-08-29 18:13:15,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 398 transitions. [2023-08-29 18:13:15,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:13:15,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 398 transitions. [2023-08-29 18:13:15,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:15,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:15,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:15,625 INFO L175 Difference]: Start difference. First operand has 42 places, 49 transitions, 106 flow. Second operand 3 states and 398 transitions. [2023-08-29 18:13:15,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 190 flow [2023-08-29 18:13:15,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 190 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:13:15,628 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 87 flow [2023-08-29 18:13:15,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-08-29 18:13:15,631 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-29 18:13:15,631 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 87 flow [2023-08-29 18:13:15,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:15,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:13:15,632 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 18:13:15,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:13:15,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-29 18:13:15,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:13:15,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1555384304, now seen corresponding path program 1 times [2023-08-29 18:13:15,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:13:15,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520337310] [2023-08-29 18:13:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:13:15,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:13:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:13:15,656 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:13:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:13:15,684 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:13:15,684 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:13:15,685 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-08-29 18:13:15,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2023-08-29 18:13:15,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2023-08-29 18:13:15,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2023-08-29 18:13:15,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2023-08-29 18:13:15,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2023-08-29 18:13:15,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2023-08-29 18:13:15,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2023-08-29 18:13:15,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2023-08-29 18:13:15,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2023-08-29 18:13:15,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2023-08-29 18:13:15,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 18:13:15,693 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 18:13:15,696 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:13:15,696 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:13:15,718 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 18:13:15,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 178 transitions, 374 flow [2023-08-29 18:13:15,740 INFO L130 PetriNetUnfolder]: 31/290 cut-off events. [2023-08-29 18:13:15,741 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:13:15,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 290 events. 31/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 949 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2023-08-29 18:13:15,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 178 transitions, 374 flow [2023-08-29 18:13:15,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 178 transitions, 374 flow [2023-08-29 18:13:15,744 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:13:15,744 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 178 transitions, 374 flow [2023-08-29 18:13:15,744 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 178 transitions, 374 flow [2023-08-29 18:13:15,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 178 transitions, 374 flow [2023-08-29 18:13:15,772 INFO L130 PetriNetUnfolder]: 31/290 cut-off events. [2023-08-29 18:13:15,772 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:13:15,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 290 events. 31/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 949 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2023-08-29 18:13:15,778 INFO L119 LiptonReduction]: Number of co-enabled transitions 13112 [2023-08-29 18:13:18,065 INFO L134 LiptonReduction]: Checked pairs total: 44551 [2023-08-29 18:13:18,065 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-29 18:13:18,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:13:18,068 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;@1c9a52bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:13:18,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-29 18:13:18,070 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-29 18:13:18,070 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:13:18,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:13:18,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 18:13:18,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-29 18:13:18,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:13:18,071 INFO L85 PathProgramCache]: Analyzing trace with hash 25411797, now seen corresponding path program 1 times [2023-08-29 18:13:18,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:13:18,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228564003] [2023-08-29 18:13:18,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:13:18,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:13:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:13:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:13:18,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:13:18,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228564003] [2023-08-29 18:13:18,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228564003] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:13:18,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:13:18,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:13:18,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380267586] [2023-08-29 18:13:18,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:13:18,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:13:18,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:13:18,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:13:18,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:13:18,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 291 [2023-08-29 18:13:18,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 84 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:18,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:13:18,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 291 [2023-08-29 18:13:18,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:13:18,481 INFO L130 PetriNetUnfolder]: 2472/5375 cut-off events. [2023-08-29 18:13:18,482 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-08-29 18:13:18,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9445 conditions, 5375 events. 2472/5375 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 42573 event pairs, 1140 based on Foata normal form. 788/5485 useless extension candidates. Maximal degree in co-relation 813. Up to 3973 conditions per place. [2023-08-29 18:13:18,500 INFO L137 encePairwiseOnDemand]: 272/291 looper letters, 46 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-08-29 18:13:18,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 274 flow [2023-08-29 18:13:18,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:13:18,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:13:18,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2023-08-29 18:13:18,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6036655211912944 [2023-08-29 18:13:18,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2023-08-29 18:13:18,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2023-08-29 18:13:18,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:13:18,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2023-08-29 18:13:18,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:18,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:18,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:18,510 INFO L175 Difference]: Start difference. First operand has 72 places, 84 transitions, 186 flow. Second operand 3 states and 527 transitions. [2023-08-29 18:13:18,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 274 flow [2023-08-29 18:13:18,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:13:18,513 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 166 flow [2023-08-29 18:13:18,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2023-08-29 18:13:18,514 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2023-08-29 18:13:18,514 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 166 flow [2023-08-29 18:13:18,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:18,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:13:18,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:13:18,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 18:13:18,517 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-29 18:13:18,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:13:18,518 INFO L85 PathProgramCache]: Analyzing trace with hash -976571207, now seen corresponding path program 1 times [2023-08-29 18:13:18,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:13:18,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84681169] [2023-08-29 18:13:18,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:13:18,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:13:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:13:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:13:18,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:13:18,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84681169] [2023-08-29 18:13:18,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84681169] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:13:18,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:13:18,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:13:18,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188063219] [2023-08-29 18:13:18,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:13:18,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:13:18,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:13:18,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:13:18,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:13:18,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 291 [2023-08-29 18:13:18,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:18,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:13:18,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 291 [2023-08-29 18:13:18,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:13:19,675 INFO L130 PetriNetUnfolder]: 9946/17443 cut-off events. [2023-08-29 18:13:19,676 INFO L131 PetriNetUnfolder]: For 893/893 co-relation queries the response was YES. [2023-08-29 18:13:19,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34413 conditions, 17443 events. 9946/17443 cut-off events. For 893/893 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 130059 event pairs, 3677 based on Foata normal form. 0/15746 useless extension candidates. Maximal degree in co-relation 34307. Up to 8886 conditions per place. [2023-08-29 18:13:19,777 INFO L137 encePairwiseOnDemand]: 272/291 looper letters, 83 selfloop transitions, 14 changer transitions 0/114 dead transitions. [2023-08-29 18:13:19,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 114 transitions, 468 flow [2023-08-29 18:13:19,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:13:19,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:13:19,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-08-29 18:13:19,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853379152348225 [2023-08-29 18:13:19,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-08-29 18:13:19,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-08-29 18:13:19,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:13:19,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-08-29 18:13:19,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:19,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:19,783 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:19,783 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 166 flow. Second operand 3 states and 511 transitions. [2023-08-29 18:13:19,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 114 transitions, 468 flow [2023-08-29 18:13:19,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 114 transitions, 465 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:13:19,788 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 286 flow [2023-08-29 18:13:19,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2023-08-29 18:13:19,789 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2023-08-29 18:13:19,789 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 286 flow [2023-08-29 18:13:19,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:19,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:13:19,789 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 18:13:19,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:13:19,790 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-29 18:13:19,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:13:19,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1203682680, now seen corresponding path program 1 times [2023-08-29 18:13:19,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:13:19,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950619621] [2023-08-29 18:13:19,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:13:19,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:13:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:13:19,812 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:13:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:13:19,833 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:13:19,834 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:13:19,834 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-08-29 18:13:19,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-08-29 18:13:19,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-08-29 18:13:19,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-08-29 18:13:19,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-08-29 18:13:19,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2023-08-29 18:13:19,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-08-29 18:13:19,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-08-29 18:13:19,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-08-29 18:13:19,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2023-08-29 18:13:19,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2023-08-29 18:13:19,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-08-29 18:13:19,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-08-29 18:13:19,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-08-29 18:13:19,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-08-29 18:13:19,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 18:13:19,837 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-29 18:13:19,838 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:13:19,838 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 18:13:19,855 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 18:13:19,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 224 transitions, 478 flow [2023-08-29 18:13:19,888 INFO L130 PetriNetUnfolder]: 50/450 cut-off events. [2023-08-29 18:13:19,888 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:13:19,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 450 events. 50/450 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1669 event pairs, 1 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2023-08-29 18:13:19,890 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 224 transitions, 478 flow [2023-08-29 18:13:19,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 224 transitions, 478 flow [2023-08-29 18:13:19,893 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:13:19,893 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 224 transitions, 478 flow [2023-08-29 18:13:19,893 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 224 transitions, 478 flow [2023-08-29 18:13:19,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 224 transitions, 478 flow [2023-08-29 18:13:19,921 INFO L130 PetriNetUnfolder]: 50/450 cut-off events. [2023-08-29 18:13:19,921 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:13:19,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 450 events. 50/450 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1669 event pairs, 1 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2023-08-29 18:13:19,935 INFO L119 LiptonReduction]: Number of co-enabled transitions 25872 [2023-08-29 18:13:22,438 INFO L134 LiptonReduction]: Checked pairs total: 109912 [2023-08-29 18:13:22,439 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-08-29 18:13:22,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:13:22,440 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;@1c9a52bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:13:22,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-29 18:13:22,442 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2023-08-29 18:13:22,442 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:13:22,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:13:22,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 18:13:22,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-29 18:13:22,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:13:22,443 INFO L85 PathProgramCache]: Analyzing trace with hash 37785817, now seen corresponding path program 1 times [2023-08-29 18:13:22,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:13:22,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991258993] [2023-08-29 18:13:22,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:13:22,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:13:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:13:22,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:13:22,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:13:22,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991258993] [2023-08-29 18:13:22,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991258993] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:13:22,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:13:22,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:13:22,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227166344] [2023-08-29 18:13:22,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:13:22,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:13:22,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:13:22,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:13:22,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:13:22,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 356 [2023-08-29 18:13:22,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 115 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:22,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:13:22,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 356 [2023-08-29 18:13:22,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:13:26,310 INFO L130 PetriNetUnfolder]: 43367/72866 cut-off events. [2023-08-29 18:13:26,311 INFO L131 PetriNetUnfolder]: For 1379/1379 co-relation queries the response was YES. [2023-08-29 18:13:26,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134536 conditions, 72866 events. 43367/72866 cut-off events. For 1379/1379 co-relation queries the response was YES. Maximal size of possible extension queue 1817. Compared 662162 event pairs, 40167 based on Foata normal form. 11812/76437 useless extension candidates. Maximal degree in co-relation 56286. Up to 60642 conditions per place. [2023-08-29 18:13:26,660 INFO L137 encePairwiseOnDemand]: 331/356 looper letters, 58 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2023-08-29 18:13:26,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 105 transitions, 360 flow [2023-08-29 18:13:26,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:13:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:13:26,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2023-08-29 18:13:26,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170411985018727 [2023-08-29 18:13:26,663 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2023-08-29 18:13:26,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2023-08-29 18:13:26,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:13:26,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2023-08-29 18:13:26,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:26,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:26,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:26,666 INFO L175 Difference]: Start difference. First operand has 98 places, 115 transitions, 260 flow. Second operand 3 states and 659 transitions. [2023-08-29 18:13:26,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 105 transitions, 360 flow [2023-08-29 18:13:26,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 105 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:13:26,672 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 228 flow [2023-08-29 18:13:26,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2023-08-29 18:13:26,674 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 2 predicate places. [2023-08-29 18:13:26,674 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 228 flow [2023-08-29 18:13:26,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:26,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:13:26,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:13:26,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 18:13:26,676 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-29 18:13:26,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:13:26,677 INFO L85 PathProgramCache]: Analyzing trace with hash 28101139, now seen corresponding path program 1 times [2023-08-29 18:13:26,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:13:26,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501381897] [2023-08-29 18:13:26,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:13:26,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:13:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:13:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:13:26,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:13:26,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501381897] [2023-08-29 18:13:26,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501381897] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:13:26,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:13:26,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:13:26,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737363343] [2023-08-29 18:13:26,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:13:26,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:13:26,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:13:26,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:13:26,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:13:26,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 356 [2023-08-29 18:13:26,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:26,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:13:26,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 356 [2023-08-29 18:13:26,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:13:49,361 INFO L130 PetriNetUnfolder]: 308262/462102 cut-off events. [2023-08-29 18:13:49,361 INFO L131 PetriNetUnfolder]: For 21376/21376 co-relation queries the response was YES. [2023-08-29 18:13:50,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 914009 conditions, 462102 events. 308262/462102 cut-off events. For 21376/21376 co-relation queries the response was YES. Maximal size of possible extension queue 8069. Compared 4112250 event pairs, 124028 based on Foata normal form. 0/418304 useless extension candidates. Maximal degree in co-relation 913897. Up to 231260 conditions per place. [2023-08-29 18:13:51,704 INFO L137 encePairwiseOnDemand]: 329/356 looper letters, 111 selfloop transitions, 20 changer transitions 0/155 dead transitions. [2023-08-29 18:13:51,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 155 transitions, 640 flow [2023-08-29 18:13:51,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:13:51,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:13:51,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 637 transitions. [2023-08-29 18:13:51,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.596441947565543 [2023-08-29 18:13:51,709 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 637 transitions. [2023-08-29 18:13:51,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 637 transitions. [2023-08-29 18:13:51,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:13:51,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 637 transitions. [2023-08-29 18:13:51,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:51,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:51,713 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:51,713 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 228 flow. Second operand 3 states and 637 transitions. [2023-08-29 18:13:51,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 155 transitions, 640 flow [2023-08-29 18:13:51,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 155 transitions, 637 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:13:51,738 INFO L231 Difference]: Finished difference. Result has 103 places, 114 transitions, 400 flow [2023-08-29 18:13:51,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=103, PETRI_TRANSITIONS=114} [2023-08-29 18:13:51,739 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 5 predicate places. [2023-08-29 18:13:51,740 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 114 transitions, 400 flow [2023-08-29 18:13:51,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:51,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:13:51,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:13:51,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 18:13:51,740 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-29 18:13:51,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:13:51,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1832468377, now seen corresponding path program 1 times [2023-08-29 18:13:51,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:13:51,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945525413] [2023-08-29 18:13:51,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:13:51,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:13:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:13:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:13:51,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:13:51,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945525413] [2023-08-29 18:13:51,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945525413] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:13:51,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:13:51,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:13:51,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906424736] [2023-08-29 18:13:51,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:13:51,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:13:51,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:13:51,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:13:51,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:13:51,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 356 [2023-08-29 18:13:51,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 114 transitions, 400 flow. Second operand has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:13:51,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:13:51,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 356 [2023-08-29 18:13:51,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:13:55,256 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([956] L702-7-->L702-8: Formula: (= |v_t_funThread2of3ForFork0_#t~nondet6_3| |v_#race~global~0_7|) InVars {t_funThread2of3ForFork0_#t~nondet6=|v_t_funThread2of3ForFork0_#t~nondet6_3|} OutVars{t_funThread2of3ForFork0_#t~nondet6=|v_t_funThread2of3ForFork0_#t~nondet6_3|, #race~global~0=|v_#race~global~0_7|} AuxVars[] AssignedVars[#race~global~0][103], [34#L709-4true, Black: 210#(= |ULTIMATE.start_main_~i~0#1| 0), 157#L702-4true, 213#true, Black: 215#(= |#race~global~0| 0), t_funThread1of3ForFork0InUse, 48#L702-8true, t_funThread2of3ForFork0InUse, 219#true, t_funThread3of3ForFork0InUse, 55#L702-10true]) [2023-08-29 18:13:55,257 INFO L383 tUnfolder$Statistics]: this new event has 39 ancestors and is cut-off event [2023-08-29 18:13:55,257 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-29 18:13:55,257 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-29 18:13:55,257 INFO L386 tUnfolder$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-29 18:13:55,693 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1116] L702-5-->L702-7: Formula: (= (+ |v_t_funThread3of3ForFork0_#t~post5_9| 1) v_~global~0_63) InVars {t_funThread3of3ForFork0_#t~post5=|v_t_funThread3of3ForFork0_#t~post5_9|} OutVars{t_funThread3of3ForFork0_#t~nondet6=|v_t_funThread3of3ForFork0_#t~nondet6_13|, t_funThread3of3ForFork0_#t~post5=|v_t_funThread3of3ForFork0_#t~post5_9|, ~global~0=v_~global~0_63} AuxVars[] AssignedVars[t_funThread3of3ForFork0_#t~nondet6, ~global~0][113], [34#L709-4true, Black: 210#(= |ULTIMATE.start_main_~i~0#1| 0), 3#L702-7true, 221#(= |t_funThread1of3ForFork0_#t~nondet6| |#race~global~0|), Black: 213#true, t_funThread1of3ForFork0InUse, 215#(= |#race~global~0| 0), t_funThread2of3ForFork0InUse, 92#L702-7true, t_funThread3of3ForFork0InUse, 55#L702-10true]) [2023-08-29 18:13:55,693 INFO L383 tUnfolder$Statistics]: this new event has 40 ancestors and is cut-off event [2023-08-29 18:13:55,693 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-29 18:13:55,693 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-29 18:13:55,693 INFO L386 tUnfolder$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-29 18:13:57,506 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1122] L702-15-->L702-17: Formula: (= |v_#race~global~0_56| 0) InVars {} OutVars{t_funThread1of3ForFork0_#t~nondet7=|v_t_funThread1of3ForFork0_#t~nondet7_7|, #race~global~0=|v_#race~global~0_56|} AuxVars[] AssignedVars[t_funThread1of3ForFork0_#t~nondet7, #race~global~0][75], [101#ULTIMATE.startEXITtrue, Black: 210#(= |ULTIMATE.start_main_~i~0#1| 0), 29#L702-17true, 157#L702-4true, Black: 213#true, t_funThread1of3ForFork0InUse, 71#L702-4true, t_funThread2of3ForFork0InUse, 215#(= |#race~global~0| 0), 219#true, t_funThread3of3ForFork0InUse]) [2023-08-29 18:13:57,507 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is cut-off event [2023-08-29 18:13:57,507 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-29 18:13:57,507 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-29 18:13:57,507 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-29 18:13:57,507 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1122] L702-15-->L702-17: Formula: (= |v_#race~global~0_56| 0) InVars {} OutVars{t_funThread1of3ForFork0_#t~nondet7=|v_t_funThread1of3ForFork0_#t~nondet7_7|, #race~global~0=|v_#race~global~0_56|} AuxVars[] AssignedVars[t_funThread1of3ForFork0_#t~nondet7, #race~global~0][75], [51#L711-9true, Black: 210#(= |ULTIMATE.start_main_~i~0#1| 0), 29#L702-17true, 157#L702-4true, Black: 213#true, t_funThread1of3ForFork0InUse, 71#L702-4true, t_funThread2of3ForFork0InUse, 215#(= |#race~global~0| 0), 219#true, t_funThread3of3ForFork0InUse]) [2023-08-29 18:13:57,507 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is cut-off event [2023-08-29 18:13:57,507 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-29 18:13:57,507 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-29 18:13:57,507 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-29 18:14:14,993 INFO L130 PetriNetUnfolder]: 278526/430411 cut-off events. [2023-08-29 18:14:14,993 INFO L131 PetriNetUnfolder]: For 194644/196531 co-relation queries the response was YES. [2023-08-29 18:14:16,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025377 conditions, 430411 events. 278526/430411 cut-off events. For 194644/196531 co-relation queries the response was YES. Maximal size of possible extension queue 8955. Compared 4080475 event pairs, 185765 based on Foata normal form. 67/381357 useless extension candidates. Maximal degree in co-relation 178319. Up to 339044 conditions per place. [2023-08-29 18:14:17,508 INFO L137 encePairwiseOnDemand]: 343/356 looper letters, 100 selfloop transitions, 22 changer transitions 0/166 dead transitions. [2023-08-29 18:14:17,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 166 transitions, 826 flow [2023-08-29 18:14:17,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:14:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:14:17,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 630 transitions. [2023-08-29 18:14:17,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5898876404494382 [2023-08-29 18:14:17,510 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 630 transitions. [2023-08-29 18:14:17,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 630 transitions. [2023-08-29 18:14:17,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:14:17,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 630 transitions. [2023-08-29 18:14:17,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:14:17,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:14:17,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:14:17,515 INFO L175 Difference]: Start difference. First operand has 103 places, 114 transitions, 400 flow. Second operand 3 states and 630 transitions. [2023-08-29 18:14:17,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 166 transitions, 826 flow [2023-08-29 18:14:17,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 166 transitions, 768 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 18:14:17,826 INFO L231 Difference]: Finished difference. Result has 105 places, 134 transitions, 566 flow [2023-08-29 18:14:17,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=566, PETRI_PLACES=105, PETRI_TRANSITIONS=134} [2023-08-29 18:14:17,827 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 7 predicate places. [2023-08-29 18:14:17,827 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 134 transitions, 566 flow [2023-08-29 18:14:17,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:14:17,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:14:17,828 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-29 18:14:17,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 18:14:17,828 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-29 18:14:17,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:14:17,828 INFO L85 PathProgramCache]: Analyzing trace with hash -79792920, now seen corresponding path program 1 times [2023-08-29 18:14:17,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:14:17,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409622888] [2023-08-29 18:14:17,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:14:17,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:14:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:14:17,837 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:14:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:14:17,845 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:14:17,845 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:14:17,845 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-08-29 18:14:17,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-08-29 18:14:17,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-08-29 18:14:17,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-08-29 18:14:17,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-08-29 18:14:17,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-08-29 18:14:17,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-08-29 18:14:17,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-08-29 18:14:17,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-08-29 18:14:17,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-08-29 18:14:17,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-08-29 18:14:17,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-08-29 18:14:17,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-08-29 18:14:17,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-08-29 18:14:17,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-08-29 18:14:17,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-08-29 18:14:17,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-08-29 18:14:17,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-08-29 18:14:17,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-08-29 18:14:17,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 18:14:17,848 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-29 18:14:17,848 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:14:17,848 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-29 18:14:17,869 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-29 18:14:17,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 270 transitions, 584 flow [2023-08-29 18:14:17,920 INFO L130 PetriNetUnfolder]: 81/698 cut-off events. [2023-08-29 18:14:17,920 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-29 18:14:17,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 698 events. 81/698 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2933 event pairs, 6 based on Foata normal form. 0/580 useless extension candidates. Maximal degree in co-relation 470. Up to 32 conditions per place. [2023-08-29 18:14:17,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 246 places, 270 transitions, 584 flow [2023-08-29 18:14:17,929 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 246 places, 270 transitions, 584 flow [2023-08-29 18:14:17,929 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:14:17,929 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 246 places, 270 transitions, 584 flow [2023-08-29 18:14:17,929 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 246 places, 270 transitions, 584 flow [2023-08-29 18:14:17,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 246 places, 270 transitions, 584 flow [2023-08-29 18:14:18,105 INFO L130 PetriNetUnfolder]: 81/698 cut-off events. [2023-08-29 18:14:18,105 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-29 18:14:18,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 698 events. 81/698 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2933 event pairs, 6 based on Foata normal form. 0/580 useless extension candidates. Maximal degree in co-relation 470. Up to 32 conditions per place. [2023-08-29 18:14:18,126 INFO L119 LiptonReduction]: Number of co-enabled transitions 42768 [2023-08-29 18:14:20,583 INFO L134 LiptonReduction]: Checked pairs total: 186610 [2023-08-29 18:14:20,583 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-29 18:14:20,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:14:20,584 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;@1c9a52bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:14:20,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-29 18:14:20,587 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-08-29 18:14:20,587 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:14:20,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:14:20,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 18:14:20,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-29 18:14:20,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:14:20,587 INFO L85 PathProgramCache]: Analyzing trace with hash 52099326, now seen corresponding path program 1 times [2023-08-29 18:14:20,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:14:20,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877052527] [2023-08-29 18:14:20,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:14:20,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:14:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:14:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:14:20,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:14:20,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877052527] [2023-08-29 18:14:20,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877052527] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:14:20,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:14:20,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:14:20,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404233341] [2023-08-29 18:14:20,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:14:20,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:14:20,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:14:20,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:14:20,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:14:20,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 419 [2023-08-29 18:14:20,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 146 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:14:20,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:14:20,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 419 [2023-08-29 18:14:20,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:15:22,176 INFO L130 PetriNetUnfolder]: 667680/1004653 cut-off events. [2023-08-29 18:15:22,177 INFO L131 PetriNetUnfolder]: For 26112/26112 co-relation queries the response was YES. [2023-08-29 18:15:25,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1884266 conditions, 1004653 events. 667680/1004653 cut-off events. For 26112/26112 co-relation queries the response was YES. Maximal size of possible extension queue 19361. Compared 10176885 event pairs, 492876 based on Foata normal form. 218495/1128947 useless extension candidates. Maximal degree in co-relation 136090. Up to 864805 conditions per place. [2023-08-29 18:15:29,404 INFO L137 encePairwiseOnDemand]: 388/419 looper letters, 70 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-08-29 18:15:29,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 130 transitions, 448 flow [2023-08-29 18:15:29,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:15:29,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:15:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 791 transitions. [2023-08-29 18:15:29,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6292760540970564 [2023-08-29 18:15:29,409 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 791 transitions. [2023-08-29 18:15:29,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 791 transitions. [2023-08-29 18:15:29,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:15:29,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 791 transitions. [2023-08-29 18:15:29,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:15:29,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:15:29,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:15:29,418 INFO L175 Difference]: Start difference. First operand has 124 places, 146 transitions, 336 flow. Second operand 3 states and 791 transitions. [2023-08-29 18:15:29,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 130 transitions, 448 flow [2023-08-29 18:15:29,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 130 transitions, 448 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:15:29,427 INFO L231 Difference]: Finished difference. Result has 126 places, 119 transitions, 292 flow [2023-08-29 18:15:29,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=126, PETRI_TRANSITIONS=119} [2023-08-29 18:15:29,428 INFO L281 CegarLoopForPetriNet]: 124 programPoint places, 2 predicate places. [2023-08-29 18:15:29,428 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 119 transitions, 292 flow [2023-08-29 18:15:29,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:15:29,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:15:29,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:15:29,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 18:15:29,429 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-29 18:15:29,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:15:29,430 INFO L85 PathProgramCache]: Analyzing trace with hash 143097262, now seen corresponding path program 1 times [2023-08-29 18:15:29,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:15:29,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691855988] [2023-08-29 18:15:29,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:15:29,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:15:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:15:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:15:29,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:15:29,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691855988] [2023-08-29 18:15:29,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691855988] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:15:29,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:15:29,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:15:29,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324794286] [2023-08-29 18:15:29,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:15:29,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:15:29,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:15:29,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:15:29,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:15:29,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 419 [2023-08-29 18:15:29,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 119 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:15:29,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:15:29,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 419 [2023-08-29 18:15:29,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand