./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/pthread-ext/39_rand_lock_p0_vs.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 13ffae79fd42fd88852ffaba2bbbf2601df90fdda2b5dc6bd9b6228e2cf540c7 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-28 18:04:28,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-28 18:04:28,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-28 18:04:28,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-28 18:04:28,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-28 18:04:28,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-28 18:04:28,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-28 18:04:28,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-28 18:04:28,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-28 18:04:28,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-28 18:04:28,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-28 18:04:28,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-28 18:04:28,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-28 18:04:28,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-28 18:04:28,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-28 18:04:28,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-28 18:04:28,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-28 18:04:28,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-28 18:04:28,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-28 18:04:28,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-28 18:04:28,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-28 18:04:28,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-28 18:04:28,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-28 18:04:28,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-28 18:04:28,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-28 18:04:28,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-28 18:04:28,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-28 18:04:28,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-28 18:04:28,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-28 18:04:28,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-28 18:04:28,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-28 18:04:28,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-28 18:04:28,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-28 18:04:28,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-28 18:04:28,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-28 18:04:28,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-28 18:04:28,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-28 18:04:28,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-28 18:04:28,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-28 18:04:28,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-28 18:04:28,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-28 18:04:28,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-28 18:04:28,679 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-28 18:04:28,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-28 18:04:28,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-28 18:04:28,681 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-28 18:04:28,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-28 18:04:28,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-28 18:04:28,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-28 18:04:28,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-28 18:04:28,684 INFO L138 SettingsManager]: * Use SBE=true [2023-08-28 18:04:28,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-28 18:04:28,685 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-28 18:04:28,685 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-28 18:04:28,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-28 18:04:28,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-28 18:04:28,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-28 18:04:28,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-28 18:04:28,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-28 18:04:28,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-28 18:04:28,686 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-28 18:04:28,686 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-28 18:04:28,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-28 18:04:28,687 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-28 18:04:28,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-28 18:04:28,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-28 18:04:28,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-28 18:04:28,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-28 18:04:28,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 18:04:28,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-28 18:04:28,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-28 18:04:28,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-28 18:04:28,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-28 18:04:28,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-28 18:04:28,689 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-28 18:04:28,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-28 18:04:28,690 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-28 18:04:28,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-28 18:04:28,690 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-28 18:04:28,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ffae79fd42fd88852ffaba2bbbf2601df90fdda2b5dc6bd9b6228e2cf540c7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-28 18:04:29,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-28 18:04:29,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-28 18:04:29,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-28 18:04:29,038 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-28 18:04:29,038 INFO L275 PluginConnector]: CDTParser initialized [2023-08-28 18:04:29,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs.i [2023-08-28 18:04:30,264 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-28 18:04:30,520 INFO L351 CDTParser]: Found 1 translation units. [2023-08-28 18:04:30,523 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs.i [2023-08-28 18:04:30,536 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/292b267c7/21cb7e5cb16f46ce8e5131a7d7c5e63a/FLAG605b8ac21 [2023-08-28 18:04:30,548 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/292b267c7/21cb7e5cb16f46ce8e5131a7d7c5e63a [2023-08-28 18:04:30,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-28 18:04:30,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-28 18:04:30,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-28 18:04:30,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-28 18:04:30,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-28 18:04:30,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 06:04:30" (1/1) ... [2023-08-28 18:04:30,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ec02d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:30, skipping insertion in model container [2023-08-28 18:04:30,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 06:04:30" (1/1) ... [2023-08-28 18:04:30,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-28 18:04:30,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-28 18:04:30,764 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-28 18:04:30,870 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs.i[30959,30972] [2023-08-28 18:04:30,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 18:04:30,892 INFO L203 MainTranslator]: Completed pre-run [2023-08-28 18:04:30,920 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-28 18:04:30,952 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs.i[30959,30972] [2023-08-28 18:04:30,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 18:04:31,001 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-28 18:04:31,002 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-28 18:04:31,002 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-28 18:04:31,008 INFO L208 MainTranslator]: Completed translation [2023-08-28 18:04:31,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:31 WrapperNode [2023-08-28 18:04:31,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-28 18:04:31,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-28 18:04:31,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-28 18:04:31,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-28 18:04:31,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:31" (1/1) ... [2023-08-28 18:04:31,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:31" (1/1) ... [2023-08-28 18:04:31,083 INFO L138 Inliner]: procedures = 176, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 96 [2023-08-28 18:04:31,083 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-28 18:04:31,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-28 18:04:31,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-28 18:04:31,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-28 18:04:31,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:31" (1/1) ... [2023-08-28 18:04:31,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:31" (1/1) ... [2023-08-28 18:04:31,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:31" (1/1) ... [2023-08-28 18:04:31,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:31" (1/1) ... [2023-08-28 18:04:31,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:31" (1/1) ... [2023-08-28 18:04:31,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:31" (1/1) ... [2023-08-28 18:04:31,123 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:31" (1/1) ... [2023-08-28 18:04:31,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:31" (1/1) ... [2023-08-28 18:04:31,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-28 18:04:31,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-28 18:04:31,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-28 18:04:31,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-28 18:04:31,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:31" (1/1) ... [2023-08-28 18:04:31,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 18:04:31,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 18:04:31,171 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) [2023-08-28 18:04:31,175 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 [2023-08-28 18:04:31,197 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-28 18:04:31,197 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-28 18:04:31,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-28 18:04:31,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-28 18:04:31,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-28 18:04:31,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-28 18:04:31,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-28 18:04:31,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-28 18:04:31,198 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-28 18:04:31,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-28 18:04:31,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-28 18:04:31,200 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-28 18:04:31,319 INFO L236 CfgBuilder]: Building ICFG [2023-08-28 18:04:31,321 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-28 18:04:31,566 INFO L277 CfgBuilder]: Performing block encoding [2023-08-28 18:04:31,644 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-28 18:04:31,650 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-28 18:04:31,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:04:31 BoogieIcfgContainer [2023-08-28 18:04:31,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-28 18:04:31,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-28 18:04:31,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-28 18:04:31,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-28 18:04:31,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 06:04:30" (1/3) ... [2023-08-28 18:04:31,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ac454b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 06:04:31, skipping insertion in model container [2023-08-28 18:04:31,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:04:31" (2/3) ... [2023-08-28 18:04:31,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ac454b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 06:04:31, skipping insertion in model container [2023-08-28 18:04:31,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:04:31" (3/3) ... [2023-08-28 18:04:31,663 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs.i [2023-08-28 18:04:31,673 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-28 18:04:31,680 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-28 18:04:31,681 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-28 18:04:31,681 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-28 18:04:31,736 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:04:31,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 145 flow [2023-08-28 18:04:31,796 INFO L130 PetriNetUnfolder]: 4/80 cut-off events. [2023-08-28 18:04:31,797 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:31,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 80 events. 4/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 4 conditions per place. [2023-08-28 18:04:31,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 70 transitions, 145 flow [2023-08-28 18:04:31,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 70 transitions, 145 flow [2023-08-28 18:04:31,809 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:04:31,818 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 70 transitions, 145 flow [2023-08-28 18:04:31,821 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 70 transitions, 145 flow [2023-08-28 18:04:31,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 145 flow [2023-08-28 18:04:31,838 INFO L130 PetriNetUnfolder]: 4/80 cut-off events. [2023-08-28 18:04:31,839 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:31,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 80 events. 4/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 4 conditions per place. [2023-08-28 18:04:31,841 INFO L119 LiptonReduction]: Number of co-enabled transitions 1144 [2023-08-28 18:04:33,743 INFO L134 LiptonReduction]: Checked pairs total: 1059 [2023-08-28 18:04:33,743 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-08-28 18:04:33,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:04:33,779 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;@5d7a061e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:04:33,779 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-28 18:04:33,782 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:04:33,783 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:33,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:33,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:04:33,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2023-08-28 18:04:33,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:33,789 INFO L85 PathProgramCache]: Analyzing trace with hash 12440232, now seen corresponding path program 1 times [2023-08-28 18:04:33,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:33,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937322441] [2023-08-28 18:04:33,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:33,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:04:34,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:34,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937322441] [2023-08-28 18:04:34,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937322441] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:34,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:34,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:04:34,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172967336] [2023-08-28 18:04:34,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:34,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:04:34,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:34,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:04:34,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:04:34,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 149 [2023-08-28 18:04:34,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 16 transitions, 37 flow. Second operand has 2 states, 2 states have (on average 58.0) internal successors, (116), 2 states have internal predecessors, (116), 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) [2023-08-28 18:04:34,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:34,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 149 [2023-08-28 18:04:34,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:34,092 INFO L130 PetriNetUnfolder]: 7/19 cut-off events. [2023-08-28 18:04:34,093 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:34,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 19 events. 7/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 4 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 30. Up to 19 conditions per place. [2023-08-28 18:04:34,094 INFO L137 encePairwiseOnDemand]: 141/149 looper letters, 0 selfloop transitions, 0 changer transitions 8/8 dead transitions. [2023-08-28 18:04:34,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 8 transitions, 35 flow [2023-08-28 18:04:34,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:04:34,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:04:34,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 127 transitions. [2023-08-28 18:04:34,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261744966442953 [2023-08-28 18:04:34,107 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 127 transitions. [2023-08-28 18:04:34,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 127 transitions. [2023-08-28 18:04:34,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:34,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 127 transitions. [2023-08-28 18:04:34,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 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) [2023-08-28 18:04:34,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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) [2023-08-28 18:04:34,117 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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) [2023-08-28 18:04:34,119 INFO L175 Difference]: Start difference. First operand has 18 places, 16 transitions, 37 flow. Second operand 2 states and 127 transitions. [2023-08-28 18:04:34,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 8 transitions, 35 flow [2023-08-28 18:04:34,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 8 transitions, 35 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 18:04:34,122 INFO L231 Difference]: Finished difference. Result has 11 places, 0 transitions, 0 flow [2023-08-28 18:04:34,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=21, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=11, PETRI_TRANSITIONS=0} [2023-08-28 18:04:34,127 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -7 predicate places. [2023-08-28 18:04:34,127 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 0 transitions, 0 flow [2023-08-28 18:04:34,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 58.0) internal successors, (116), 2 states have internal predecessors, (116), 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) [2023-08-28 18:04:34,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 14 remaining) [2023-08-28 18:04:34,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2023-08-28 18:04:34,130 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2023-08-28 18:04:34,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2023-08-28 18:04:34,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2023-08-28 18:04:34,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2023-08-28 18:04:34,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2023-08-28 18:04:34,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2023-08-28 18:04:34,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2023-08-28 18:04:34,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2023-08-28 18:04:34,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2023-08-28 18:04:34,132 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2023-08-28 18:04:34,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2023-08-28 18:04:34,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2023-08-28 18:04:34,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-28 18:04:34,134 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:04:34,136 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:04:34,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 145 flow [2023-08-28 18:04:34,153 INFO L130 PetriNetUnfolder]: 4/80 cut-off events. [2023-08-28 18:04:34,153 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:34,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 80 events. 4/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 4 conditions per place. [2023-08-28 18:04:34,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 70 transitions, 145 flow [2023-08-28 18:04:34,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 70 transitions, 145 flow [2023-08-28 18:04:34,155 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:04:34,155 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 70 transitions, 145 flow [2023-08-28 18:04:34,155 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 70 transitions, 145 flow [2023-08-28 18:04:34,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 145 flow [2023-08-28 18:04:34,164 INFO L130 PetriNetUnfolder]: 4/80 cut-off events. [2023-08-28 18:04:34,165 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:34,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 80 events. 4/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 70 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 4 conditions per place. [2023-08-28 18:04:34,166 INFO L119 LiptonReduction]: Number of co-enabled transitions 1144 [2023-08-28 18:04:35,826 INFO L134 LiptonReduction]: Checked pairs total: 1113 [2023-08-28 18:04:35,826 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-08-28 18:04:35,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:04:35,830 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;@5d7a061e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:04:35,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:04:35,833 INFO L130 PetriNetUnfolder]: 1/17 cut-off events. [2023-08-28 18:04:35,833 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:35,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:35,833 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-28 18:04:35,834 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:04:35,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:35,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1340213027, now seen corresponding path program 1 times [2023-08-28 18:04:35,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:35,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731950388] [2023-08-28 18:04:35,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:35,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:04:35,858 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:04:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:04:35,887 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:04:35,888 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:04:35,888 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:04:35,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-28 18:04:35,889 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:04:35,890 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:04:35,890 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:04:35,890 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-28 18:04:35,912 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:04:35,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 115 transitions, 242 flow [2023-08-28 18:04:35,935 INFO L130 PetriNetUnfolder]: 7/137 cut-off events. [2023-08-28 18:04:35,936 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:04:35,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 137 events. 7/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 251 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 100. Up to 6 conditions per place. [2023-08-28 18:04:35,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 115 transitions, 242 flow [2023-08-28 18:04:35,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 115 transitions, 242 flow [2023-08-28 18:04:35,940 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:04:35,940 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 115 transitions, 242 flow [2023-08-28 18:04:35,940 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 115 transitions, 242 flow [2023-08-28 18:04:35,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 115 transitions, 242 flow [2023-08-28 18:04:35,974 INFO L130 PetriNetUnfolder]: 7/137 cut-off events. [2023-08-28 18:04:35,975 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:04:35,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 137 events. 7/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 251 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 100. Up to 6 conditions per place. [2023-08-28 18:04:35,982 INFO L119 LiptonReduction]: Number of co-enabled transitions 6248 [2023-08-28 18:04:37,742 INFO L134 LiptonReduction]: Checked pairs total: 11447 [2023-08-28 18:04:37,742 INFO L136 LiptonReduction]: Total number of compositions: 105 [2023-08-28 18:04:37,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:04:37,745 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;@5d7a061e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:04:37,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-28 18:04:37,747 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:04:37,747 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:37,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:37,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:04:37,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-28 18:04:37,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:37,748 INFO L85 PathProgramCache]: Analyzing trace with hash 22952216, now seen corresponding path program 1 times [2023-08-28 18:04:37,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:37,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615338765] [2023-08-28 18:04:37,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:37,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:04:37,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:37,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615338765] [2023-08-28 18:04:37,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615338765] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:37,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:37,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:04:37,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437421869] [2023-08-28 18:04:37,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:37,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:04:37,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:37,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:04:37,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:04:37,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 220 [2023-08-28 18:04:37,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 91.0) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:04:37,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:37,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 220 [2023-08-28 18:04:37,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:37,844 INFO L130 PetriNetUnfolder]: 121/251 cut-off events. [2023-08-28 18:04:37,848 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-28 18:04:37,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 251 events. 121/251 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1057 event pairs, 95 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 188. Up to 208 conditions per place. [2023-08-28 18:04:37,852 INFO L137 encePairwiseOnDemand]: 207/220 looper letters, 16 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-08-28 18:04:37,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 94 flow [2023-08-28 18:04:37,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:04:37,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:04:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 207 transitions. [2023-08-28 18:04:37,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47045454545454546 [2023-08-28 18:04:37,860 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 207 transitions. [2023-08-28 18:04:37,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 207 transitions. [2023-08-28 18:04:37,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:37,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 207 transitions. [2023-08-28 18:04:37,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 103.5) internal successors, (207), 2 states have internal predecessors, (207), 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) [2023-08-28 18:04:37,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:04:37,865 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:04:37,866 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 88 flow. Second operand 2 states and 207 transitions. [2023-08-28 18:04:37,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 94 flow [2023-08-28 18:04:37,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 92 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-28 18:04:37,868 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 60 flow [2023-08-28 18:04:37,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-08-28 18:04:37,869 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -12 predicate places. [2023-08-28 18:04:37,872 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 60 flow [2023-08-28 18:04:37,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 91.0) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:04:37,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:37,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:37,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-28 18:04:37,874 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-28 18:04:37,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:37,875 INFO L85 PathProgramCache]: Analyzing trace with hash 870186162, now seen corresponding path program 1 times [2023-08-28 18:04:37,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:37,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061866807] [2023-08-28 18:04:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:37,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:37,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:04:37,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:37,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061866807] [2023-08-28 18:04:37,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061866807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:37,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:37,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:04:37,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403141290] [2023-08-28 18:04:37,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:37,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:04:37,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:37,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:04:37,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:04:37,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 220 [2023-08-28 18:04:37,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2023-08-28 18:04:37,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:37,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 220 [2023-08-28 18:04:37,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:38,094 INFO L130 PetriNetUnfolder]: 265/467 cut-off events. [2023-08-28 18:04:38,095 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-28 18:04:38,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 467 events. 265/467 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2176 event pairs, 88 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 954. Up to 305 conditions per place. [2023-08-28 18:04:38,099 INFO L137 encePairwiseOnDemand]: 210/220 looper letters, 22 selfloop transitions, 4 changer transitions 14/43 dead transitions. [2023-08-28 18:04:38,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 43 transitions, 181 flow [2023-08-28 18:04:38,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:04:38,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:04:38,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2023-08-28 18:04:38,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2023-08-28 18:04:38,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2023-08-28 18:04:38,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2023-08-28 18:04:38,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:38,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2023-08-28 18:04:38,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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) [2023-08-28 18:04:38,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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) [2023-08-28 18:04:38,108 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 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) [2023-08-28 18:04:38,108 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 60 flow. Second operand 3 states and 291 transitions. [2023-08-28 18:04:38,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 43 transitions, 181 flow [2023-08-28 18:04:38,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 43 transitions, 181 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 18:04:38,110 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 96 flow [2023-08-28 18:04:38,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-08-28 18:04:38,113 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -8 predicate places. [2023-08-28 18:04:38,113 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 96 flow [2023-08-28 18:04:38,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2023-08-28 18:04:38,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:38,116 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:38,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-28 18:04:38,116 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-28 18:04:38,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:38,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1839525149, now seen corresponding path program 1 times [2023-08-28 18:04:38,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:38,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180567493] [2023-08-28 18:04:38,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:38,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:38,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:04:38,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:38,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180567493] [2023-08-28 18:04:38,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180567493] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:38,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:38,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-28 18:04:38,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693960414] [2023-08-28 18:04:38,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:38,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-28 18:04:38,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:38,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-28 18:04:38,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-28 18:04:38,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 220 [2023-08-28 18:04:38,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-08-28 18:04:38,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:38,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 220 [2023-08-28 18:04:38,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:38,350 INFO L130 PetriNetUnfolder]: 80/196 cut-off events. [2023-08-28 18:04:38,350 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2023-08-28 18:04:38,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 196 events. 80/196 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 837 event pairs, 5 based on Foata normal form. 16/209 useless extension candidates. Maximal degree in co-relation 482. Up to 62 conditions per place. [2023-08-28 18:04:38,351 INFO L137 encePairwiseOnDemand]: 213/220 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2023-08-28 18:04:38,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 247 flow [2023-08-28 18:04:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-28 18:04:38,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-28 18:04:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 475 transitions. [2023-08-28 18:04:38,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2023-08-28 18:04:38,354 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 475 transitions. [2023-08-28 18:04:38,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 475 transitions. [2023-08-28 18:04:38,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:38,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 475 transitions. [2023-08-28 18:04:38,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 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) [2023-08-28 18:04:38,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 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) [2023-08-28 18:04:38,358 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 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) [2023-08-28 18:04:38,358 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 96 flow. Second operand 5 states and 475 transitions. [2023-08-28 18:04:38,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 247 flow [2023-08-28 18:04:38,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 227 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 18:04:38,361 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2023-08-28 18:04:38,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=220, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2023-08-28 18:04:38,362 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -8 predicate places. [2023-08-28 18:04:38,362 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2023-08-28 18:04:38,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 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) [2023-08-28 18:04:38,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 21 remaining) [2023-08-28 18:04:38,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2023-08-28 18:04:38,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2023-08-28 18:04:38,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2023-08-28 18:04:38,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2023-08-28 18:04:38,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2023-08-28 18:04:38,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2023-08-28 18:04:38,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2023-08-28 18:04:38,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2023-08-28 18:04:38,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2023-08-28 18:04:38,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2023-08-28 18:04:38,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2023-08-28 18:04:38,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2023-08-28 18:04:38,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2023-08-28 18:04:38,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2023-08-28 18:04:38,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2023-08-28 18:04:38,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2023-08-28 18:04:38,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2023-08-28 18:04:38,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2023-08-28 18:04:38,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2023-08-28 18:04:38,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2023-08-28 18:04:38,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-28 18:04:38,366 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-28 18:04:38,367 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:04:38,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 115 transitions, 242 flow [2023-08-28 18:04:38,381 INFO L130 PetriNetUnfolder]: 7/137 cut-off events. [2023-08-28 18:04:38,381 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:04:38,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 137 events. 7/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 251 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 100. Up to 6 conditions per place. [2023-08-28 18:04:38,382 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 115 transitions, 242 flow [2023-08-28 18:04:38,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 115 transitions, 242 flow [2023-08-28 18:04:38,384 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:04:38,384 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 115 transitions, 242 flow [2023-08-28 18:04:38,384 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 115 transitions, 242 flow [2023-08-28 18:04:38,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 115 transitions, 242 flow [2023-08-28 18:04:38,396 INFO L130 PetriNetUnfolder]: 7/137 cut-off events. [2023-08-28 18:04:38,396 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:04:38,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 137 events. 7/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 251 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 100. Up to 6 conditions per place. [2023-08-28 18:04:38,400 INFO L119 LiptonReduction]: Number of co-enabled transitions 6248 [2023-08-28 18:04:40,128 INFO L134 LiptonReduction]: Checked pairs total: 11412 [2023-08-28 18:04:40,128 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-08-28 18:04:40,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:04:40,130 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;@5d7a061e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:04:40,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:04:40,134 INFO L130 PetriNetUnfolder]: 1/34 cut-off events. [2023-08-28 18:04:40,134 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:04:40,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:40,134 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-28 18:04:40,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:04:40,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:40,134 INFO L85 PathProgramCache]: Analyzing trace with hash -2060140008, now seen corresponding path program 1 times [2023-08-28 18:04:40,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:40,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743385867] [2023-08-28 18:04:40,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:40,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:04:40,154 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:04:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:04:40,174 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:04:40,178 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:04:40,178 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:04:40,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-28 18:04:40,179 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:04:40,181 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:04:40,181 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:04:40,181 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-28 18:04:40,217 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:04:40,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 160 transitions, 341 flow [2023-08-28 18:04:40,239 INFO L130 PetriNetUnfolder]: 10/194 cut-off events. [2023-08-28 18:04:40,239 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 18:04:40,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 194 events. 10/194 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 499 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 144. Up to 8 conditions per place. [2023-08-28 18:04:40,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 160 transitions, 341 flow [2023-08-28 18:04:40,243 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 160 transitions, 341 flow [2023-08-28 18:04:40,243 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:04:40,243 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 160 transitions, 341 flow [2023-08-28 18:04:40,244 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 160 transitions, 341 flow [2023-08-28 18:04:40,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 160 transitions, 341 flow [2023-08-28 18:04:40,281 INFO L130 PetriNetUnfolder]: 10/194 cut-off events. [2023-08-28 18:04:40,281 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 18:04:40,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 194 events. 10/194 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 499 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 144. Up to 8 conditions per place. [2023-08-28 18:04:40,290 INFO L119 LiptonReduction]: Number of co-enabled transitions 15312 [2023-08-28 18:04:42,464 INFO L134 LiptonReduction]: Checked pairs total: 29655 [2023-08-28 18:04:42,465 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-08-28 18:04:42,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:04:42,467 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;@5d7a061e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:04:42,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-28 18:04:42,468 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:04:42,468 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:42,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:42,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:04:42,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-28 18:04:42,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:42,469 INFO L85 PathProgramCache]: Analyzing trace with hash 36921239, now seen corresponding path program 1 times [2023-08-28 18:04:42,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:42,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677703070] [2023-08-28 18:04:42,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:42,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:04:42,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:42,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677703070] [2023-08-28 18:04:42,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677703070] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:42,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:42,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:04:42,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752547838] [2023-08-28 18:04:42,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:42,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:04:42,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:42,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:04:42,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:04:42,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 307 [2023-08-28 18:04:42,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 129 flow. Second operand has 2 states, 2 states have (on average 124.0) internal successors, (248), 2 states have internal predecessors, (248), 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) [2023-08-28 18:04:42,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:42,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 307 [2023-08-28 18:04:42,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:42,731 INFO L130 PetriNetUnfolder]: 1237/2011 cut-off events. [2023-08-28 18:04:42,731 INFO L131 PetriNetUnfolder]: For 292/292 co-relation queries the response was YES. [2023-08-28 18:04:42,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4007 conditions, 2011 events. 1237/2011 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10802 event pairs, 995 based on Foata normal form. 0/1640 useless extension candidates. Maximal degree in co-relation 497. Up to 1756 conditions per place. [2023-08-28 18:04:42,742 INFO L137 encePairwiseOnDemand]: 288/307 looper letters, 23 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2023-08-28 18:04:42,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 137 flow [2023-08-28 18:04:42,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:04:42,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:04:42,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 286 transitions. [2023-08-28 18:04:42,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46579804560260585 [2023-08-28 18:04:42,745 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 286 transitions. [2023-08-28 18:04:42,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 286 transitions. [2023-08-28 18:04:42,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:42,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 286 transitions. [2023-08-28 18:04:42,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 143.0) internal successors, (286), 2 states have internal predecessors, (286), 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) [2023-08-28 18:04:42,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 307.0) internal successors, (921), 3 states have internal predecessors, (921), 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) [2023-08-28 18:04:42,748 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 307.0) internal successors, (921), 3 states have internal predecessors, (921), 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) [2023-08-28 18:04:42,748 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 129 flow. Second operand 2 states and 286 transitions. [2023-08-28 18:04:42,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 137 flow [2023-08-28 18:04:42,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 131 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-28 18:04:42,752 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 85 flow [2023-08-28 18:04:42,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=85, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-08-28 18:04:42,753 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -18 predicate places. [2023-08-28 18:04:42,753 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 85 flow [2023-08-28 18:04:42,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 124.0) internal successors, (248), 2 states have internal predecessors, (248), 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) [2023-08-28 18:04:42,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:42,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:42,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-28 18:04:42,755 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-28 18:04:42,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:42,755 INFO L85 PathProgramCache]: Analyzing trace with hash 409922823, now seen corresponding path program 1 times [2023-08-28 18:04:42,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:42,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460010133] [2023-08-28 18:04:42,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:42,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:42,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:04:42,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:42,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460010133] [2023-08-28 18:04:42,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460010133] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:42,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:42,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:04:42,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748924289] [2023-08-28 18:04:42,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:42,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:04:42,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:42,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:04:42,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:04:42,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 307 [2023-08-28 18:04:42,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 85 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) [2023-08-28 18:04:42,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:42,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 307 [2023-08-28 18:04:42,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:43,399 INFO L130 PetriNetUnfolder]: 4617/6744 cut-off events. [2023-08-28 18:04:43,400 INFO L131 PetriNetUnfolder]: For 282/282 co-relation queries the response was YES. [2023-08-28 18:04:43,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13736 conditions, 6744 events. 4617/6744 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 39301 event pairs, 1682 based on Foata normal form. 0/5875 useless extension candidates. Maximal degree in co-relation 13730. Up to 4247 conditions per place. [2023-08-28 18:04:43,474 INFO L137 encePairwiseOnDemand]: 292/307 looper letters, 47 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2023-08-28 18:04:43,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 62 transitions, 267 flow [2023-08-28 18:04:43,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:04:43,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:04:43,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2023-08-28 18:04:43,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43539630836047777 [2023-08-28 18:04:43,476 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 401 transitions. [2023-08-28 18:04:43,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 401 transitions. [2023-08-28 18:04:43,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:43,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 401 transitions. [2023-08-28 18:04:43,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 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) [2023-08-28 18:04:43,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 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) [2023-08-28 18:04:43,480 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 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) [2023-08-28 18:04:43,481 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 85 flow. Second operand 3 states and 401 transitions. [2023-08-28 18:04:43,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 62 transitions, 267 flow [2023-08-28 18:04:43,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 267 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 18:04:43,484 INFO L231 Difference]: Finished difference. Result has 44 places, 47 transitions, 187 flow [2023-08-28 18:04:43,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=44, PETRI_TRANSITIONS=47} [2023-08-28 18:04:43,486 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -14 predicate places. [2023-08-28 18:04:43,486 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 47 transitions, 187 flow [2023-08-28 18:04:43,487 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) [2023-08-28 18:04:43,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:43,487 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:43,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-28 18:04:43,487 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-28 18:04:43,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:43,488 INFO L85 PathProgramCache]: Analyzing trace with hash 130876085, now seen corresponding path program 1 times [2023-08-28 18:04:43,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:43,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043036494] [2023-08-28 18:04:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:43,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:04:43,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:43,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043036494] [2023-08-28 18:04:43,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043036494] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:43,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:43,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-28 18:04:43,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141154393] [2023-08-28 18:04:43,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:43,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-28 18:04:43,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:43,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-28 18:04:43,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-28 18:04:43,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 307 [2023-08-28 18:04:43,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 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) [2023-08-28 18:04:43,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:43,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 307 [2023-08-28 18:04:43,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:43,753 INFO L130 PetriNetUnfolder]: 597/1131 cut-off events. [2023-08-28 18:04:43,753 INFO L131 PetriNetUnfolder]: For 561/561 co-relation queries the response was YES. [2023-08-28 18:04:43,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2947 conditions, 1131 events. 597/1131 cut-off events. For 561/561 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6272 event pairs, 23 based on Foata normal form. 172/1295 useless extension candidates. Maximal degree in co-relation 2939. Up to 474 conditions per place. [2023-08-28 18:04:43,757 INFO L137 encePairwiseOnDemand]: 297/307 looper letters, 0 selfloop transitions, 0 changer transitions 74/74 dead transitions. [2023-08-28 18:04:43,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 74 transitions, 425 flow [2023-08-28 18:04:43,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-28 18:04:43,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-28 18:04:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 659 transitions. [2023-08-28 18:04:43,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4293159609120521 [2023-08-28 18:04:43,760 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 659 transitions. [2023-08-28 18:04:43,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 659 transitions. [2023-08-28 18:04:43,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:43,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 659 transitions. [2023-08-28 18:04:43,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.8) internal successors, (659), 5 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) [2023-08-28 18:04:43,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 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) [2023-08-28 18:04:43,765 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 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) [2023-08-28 18:04:43,765 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 187 flow. Second operand 5 states and 659 transitions. [2023-08-28 18:04:43,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 74 transitions, 425 flow [2023-08-28 18:04:43,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 74 transitions, 389 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 18:04:43,770 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-28 18:04:43,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-28 18:04:43,771 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -15 predicate places. [2023-08-28 18:04:43,771 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-28 18:04:43,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 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) [2023-08-28 18:04:43,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 28 remaining) [2023-08-28 18:04:43,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 28 remaining) [2023-08-28 18:04:43,772 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 28 remaining) [2023-08-28 18:04:43,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 28 remaining) [2023-08-28 18:04:43,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (23 of 28 remaining) [2023-08-28 18:04:43,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 28 remaining) [2023-08-28 18:04:43,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 28 remaining) [2023-08-28 18:04:43,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 28 remaining) [2023-08-28 18:04:43,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 28 remaining) [2023-08-28 18:04:43,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (18 of 28 remaining) [2023-08-28 18:04:43,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (17 of 28 remaining) [2023-08-28 18:04:43,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 28 remaining) [2023-08-28 18:04:43,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 28 remaining) [2023-08-28 18:04:43,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 28 remaining) [2023-08-28 18:04:43,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 28 remaining) [2023-08-28 18:04:43,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 28 remaining) [2023-08-28 18:04:43,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 28 remaining) [2023-08-28 18:04:43,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 28 remaining) [2023-08-28 18:04:43,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 28 remaining) [2023-08-28 18:04:43,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 28 remaining) [2023-08-28 18:04:43,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 28 remaining) [2023-08-28 18:04:43,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 28 remaining) [2023-08-28 18:04:43,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 28 remaining) [2023-08-28 18:04:43,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 28 remaining) [2023-08-28 18:04:43,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 28 remaining) [2023-08-28 18:04:43,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (2 of 28 remaining) [2023-08-28 18:04:43,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 28 remaining) [2023-08-28 18:04:43,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 28 remaining) [2023-08-28 18:04:43,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-28 18:04:43,777 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-28 18:04:43,778 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:04:43,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 160 transitions, 341 flow [2023-08-28 18:04:43,799 INFO L130 PetriNetUnfolder]: 10/194 cut-off events. [2023-08-28 18:04:43,800 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 18:04:43,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 194 events. 10/194 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 499 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 144. Up to 8 conditions per place. [2023-08-28 18:04:43,801 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 160 transitions, 341 flow [2023-08-28 18:04:43,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 160 transitions, 341 flow [2023-08-28 18:04:43,802 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:04:43,802 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 160 transitions, 341 flow [2023-08-28 18:04:43,803 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 160 transitions, 341 flow [2023-08-28 18:04:43,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 160 transitions, 341 flow [2023-08-28 18:04:43,848 INFO L130 PetriNetUnfolder]: 10/194 cut-off events. [2023-08-28 18:04:43,852 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 18:04:43,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 194 events. 10/194 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 499 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 144. Up to 8 conditions per place. [2023-08-28 18:04:43,861 INFO L119 LiptonReduction]: Number of co-enabled transitions 15312 [2023-08-28 18:04:45,920 INFO L134 LiptonReduction]: Checked pairs total: 29434 [2023-08-28 18:04:45,921 INFO L136 LiptonReduction]: Total number of compositions: 151 [2023-08-28 18:04:45,922 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:04:45,923 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;@5d7a061e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:04:45,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:04:45,928 INFO L130 PetriNetUnfolder]: 2/54 cut-off events. [2023-08-28 18:04:45,928 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 18:04:45,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:45,928 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-28 18:04:45,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:04:45,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:45,929 INFO L85 PathProgramCache]: Analyzing trace with hash -699646477, now seen corresponding path program 1 times [2023-08-28 18:04:45,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:45,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738565377] [2023-08-28 18:04:45,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:45,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:04:45,950 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:04:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:04:45,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:04:45,974 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:04:45,974 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:04:45,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-28 18:04:45,974 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:04:45,976 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:04:45,976 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:04:45,977 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-28 18:04:46,005 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:04:46,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 205 transitions, 442 flow [2023-08-28 18:04:46,033 INFO L130 PetriNetUnfolder]: 13/251 cut-off events. [2023-08-28 18:04:46,033 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 18:04:46,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 251 events. 13/251 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 762 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 202. Up to 10 conditions per place. [2023-08-28 18:04:46,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 205 transitions, 442 flow [2023-08-28 18:04:46,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 205 transitions, 442 flow [2023-08-28 18:04:46,038 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:04:46,039 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 205 transitions, 442 flow [2023-08-28 18:04:46,039 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 205 transitions, 442 flow [2023-08-28 18:04:46,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 205 transitions, 442 flow [2023-08-28 18:04:46,069 INFO L130 PetriNetUnfolder]: 13/251 cut-off events. [2023-08-28 18:04:46,070 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 18:04:46,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 251 events. 13/251 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 762 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 202. Up to 10 conditions per place. [2023-08-28 18:04:46,080 INFO L119 LiptonReduction]: Number of co-enabled transitions 28336 [2023-08-28 18:04:48,848 INFO L134 LiptonReduction]: Checked pairs total: 52556 [2023-08-28 18:04:48,849 INFO L136 LiptonReduction]: Total number of compositions: 196 [2023-08-28 18:04:48,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:04:48,851 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;@5d7a061e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:04:48,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-08-28 18:04:48,852 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:04:48,852 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:04:48,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:48,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:04:48,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-28 18:04:48,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:48,853 INFO L85 PathProgramCache]: Analyzing trace with hash 55351524, now seen corresponding path program 1 times [2023-08-28 18:04:48,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:48,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144376162] [2023-08-28 18:04:48,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:48,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:04:48,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:48,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144376162] [2023-08-28 18:04:48,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144376162] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:48,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:48,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:04:48,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071283647] [2023-08-28 18:04:48,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:48,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:04:48,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:48,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:04:48,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:04:48,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 401 [2023-08-28 18:04:48,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 172 flow. Second operand has 2 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 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) [2023-08-28 18:04:48,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:48,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 401 [2023-08-28 18:04:48,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:50,216 INFO L130 PetriNetUnfolder]: 10525/15163 cut-off events. [2023-08-28 18:04:50,216 INFO L131 PetriNetUnfolder]: For 3148/3148 co-relation queries the response was YES. [2023-08-28 18:04:50,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30624 conditions, 15163 events. 10525/15163 cut-off events. For 3148/3148 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 92248 event pairs, 8555 based on Foata normal form. 0/12423 useless extension candidates. Maximal degree in co-relation 4069. Up to 13636 conditions per place. [2023-08-28 18:04:50,329 INFO L137 encePairwiseOnDemand]: 376/401 looper letters, 30 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2023-08-28 18:04:50,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 182 flow [2023-08-28 18:04:50,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:04:50,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:04:50,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 365 transitions. [2023-08-28 18:04:50,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551122194513716 [2023-08-28 18:04:50,331 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 365 transitions. [2023-08-28 18:04:50,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 365 transitions. [2023-08-28 18:04:50,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:50,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 365 transitions. [2023-08-28 18:04:50,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 182.5) internal successors, (365), 2 states have internal predecessors, (365), 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) [2023-08-28 18:04:50,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 401.0) internal successors, (1203), 3 states have internal predecessors, (1203), 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) [2023-08-28 18:04:50,335 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 401.0) internal successors, (1203), 3 states have internal predecessors, (1203), 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) [2023-08-28 18:04:50,335 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 172 flow. Second operand 2 states and 365 transitions. [2023-08-28 18:04:50,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 182 flow [2023-08-28 18:04:50,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 170 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-28 18:04:50,340 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 110 flow [2023-08-28 18:04:50,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-08-28 18:04:50,342 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -24 predicate places. [2023-08-28 18:04:50,342 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 110 flow [2023-08-28 18:04:50,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 157.0) internal successors, (314), 2 states have internal predecessors, (314), 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) [2023-08-28 18:04:50,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:50,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:50,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-28 18:04:50,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-28 18:04:50,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:50,344 INFO L85 PathProgramCache]: Analyzing trace with hash -288369967, now seen corresponding path program 1 times [2023-08-28 18:04:50,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:50,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035393171] [2023-08-28 18:04:50,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:50,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:50,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:04:50,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:50,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035393171] [2023-08-28 18:04:50,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035393171] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:50,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:50,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:04:50,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132326718] [2023-08-28 18:04:50,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:50,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:04:50,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:50,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:04:50,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:04:50,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 401 [2023-08-28 18:04:50,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2023-08-28 18:04:50,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:50,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 401 [2023-08-28 18:04:50,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:56,099 INFO L130 PetriNetUnfolder]: 65293/86850 cut-off events. [2023-08-28 18:04:56,099 INFO L131 PetriNetUnfolder]: For 3036/3036 co-relation queries the response was YES. [2023-08-28 18:04:56,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176279 conditions, 86850 events. 65293/86850 cut-off events. For 3036/3036 co-relation queries the response was YES. Maximal size of possible extension queue 3576. Compared 558641 event pairs, 24624 based on Foata normal form. 0/74845 useless extension candidates. Maximal degree in co-relation 176272. Up to 53039 conditions per place. [2023-08-28 18:04:56,761 INFO L137 encePairwiseOnDemand]: 381/401 looper letters, 62 selfloop transitions, 16 changer transitions 0/81 dead transitions. [2023-08-28 18:04:56,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 353 flow [2023-08-28 18:04:56,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:04:56,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:04:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-08-28 18:04:56,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4247714048212801 [2023-08-28 18:04:56,764 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-08-28 18:04:56,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-08-28 18:04:56,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:56,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-08-28 18:04:56,765 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) [2023-08-28 18:04:56,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 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) [2023-08-28 18:04:56,767 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 401.0) internal successors, (1604), 4 states have internal predecessors, (1604), 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) [2023-08-28 18:04:56,768 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 110 flow. Second operand 3 states and 511 transitions. [2023-08-28 18:04:56,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 353 flow [2023-08-28 18:04:56,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 353 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 18:04:56,773 INFO L231 Difference]: Finished difference. Result has 55 places, 61 transitions, 246 flow [2023-08-28 18:04:56,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=55, PETRI_TRANSITIONS=61} [2023-08-28 18:04:56,774 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -20 predicate places. [2023-08-28 18:04:56,774 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 61 transitions, 246 flow [2023-08-28 18:04:56,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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) [2023-08-28 18:04:56,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:04:56,775 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:04:56,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-28 18:04:56,775 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-28 18:04:56,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:04:56,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1595930432, now seen corresponding path program 1 times [2023-08-28 18:04:56,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:04:56,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220165387] [2023-08-28 18:04:56,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:04:56,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:04:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:04:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:04:56,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:04:56,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220165387] [2023-08-28 18:04:56,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220165387] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:04:56,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:04:56,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-28 18:04:56,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331437202] [2023-08-28 18:04:56,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:04:56,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-28 18:04:56,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:04:56,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-28 18:04:56,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-28 18:04:56,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 401 [2023-08-28 18:04:56,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 61 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 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) [2023-08-28 18:04:56,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:04:56,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 401 [2023-08-28 18:04:56,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:04:57,331 INFO L130 PetriNetUnfolder]: 3308/5508 cut-off events. [2023-08-28 18:04:57,332 INFO L131 PetriNetUnfolder]: For 3178/3178 co-relation queries the response was YES. [2023-08-28 18:04:57,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14848 conditions, 5508 events. 3308/5508 cut-off events. For 3178/3178 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 35007 event pairs, 123 based on Foata normal form. 1156/6643 useless extension candidates. Maximal degree in co-relation 14839. Up to 2692 conditions per place. [2023-08-28 18:04:57,359 INFO L137 encePairwiseOnDemand]: 388/401 looper letters, 0 selfloop transitions, 0 changer transitions 97/97 dead transitions. [2023-08-28 18:04:57,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 97 transitions, 567 flow [2023-08-28 18:04:57,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-28 18:04:57,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-28 18:04:57,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 843 transitions. [2023-08-28 18:04:57,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4204488778054863 [2023-08-28 18:04:57,363 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 843 transitions. [2023-08-28 18:04:57,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 843 transitions. [2023-08-28 18:04:57,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:04:57,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 843 transitions. [2023-08-28 18:04:57,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.6) internal successors, (843), 5 states have internal predecessors, (843), 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) [2023-08-28 18:04:57,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 401.0) internal successors, (2406), 6 states have internal predecessors, (2406), 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) [2023-08-28 18:04:57,371 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 401.0) internal successors, (2406), 6 states have internal predecessors, (2406), 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) [2023-08-28 18:04:57,371 INFO L175 Difference]: Start difference. First operand has 55 places, 61 transitions, 246 flow. Second operand 5 states and 843 transitions. [2023-08-28 18:04:57,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 97 transitions, 567 flow [2023-08-28 18:04:57,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 97 transitions, 519 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 18:04:57,385 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-08-28 18:04:57,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=401, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-08-28 18:04:57,387 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -22 predicate places. [2023-08-28 18:04:57,387 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-08-28 18:04:57,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 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) [2023-08-28 18:04:57,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 35 remaining) [2023-08-28 18:04:57,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (33 of 35 remaining) [2023-08-28 18:04:57,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (32 of 35 remaining) [2023-08-28 18:04:57,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (31 of 35 remaining) [2023-08-28 18:04:57,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (30 of 35 remaining) [2023-08-28 18:04:57,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 35 remaining) [2023-08-28 18:04:57,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 35 remaining) [2023-08-28 18:04:57,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 35 remaining) [2023-08-28 18:04:57,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (26 of 35 remaining) [2023-08-28 18:04:57,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 35 remaining) [2023-08-28 18:04:57,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 35 remaining) [2023-08-28 18:04:57,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 35 remaining) [2023-08-28 18:04:57,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (22 of 35 remaining) [2023-08-28 18:04:57,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 35 remaining) [2023-08-28 18:04:57,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 35 remaining) [2023-08-28 18:04:57,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 35 remaining) [2023-08-28 18:04:57,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 35 remaining) [2023-08-28 18:04:57,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 35 remaining) [2023-08-28 18:04:57,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 35 remaining) [2023-08-28 18:04:57,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 35 remaining) [2023-08-28 18:04:57,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 35 remaining) [2023-08-28 18:04:57,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 35 remaining) [2023-08-28 18:04:57,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 35 remaining) [2023-08-28 18:04:57,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 35 remaining) [2023-08-28 18:04:57,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 35 remaining) [2023-08-28 18:04:57,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (9 of 35 remaining) [2023-08-28 18:04:57,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 35 remaining) [2023-08-28 18:04:57,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 35 remaining) [2023-08-28 18:04:57,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 35 remaining) [2023-08-28 18:04:57,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 35 remaining) [2023-08-28 18:04:57,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 35 remaining) [2023-08-28 18:04:57,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 35 remaining) [2023-08-28 18:04:57,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 35 remaining) [2023-08-28 18:04:57,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 35 remaining) [2023-08-28 18:04:57,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 35 remaining) [2023-08-28 18:04:57,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-28 18:04:57,393 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-28 18:04:57,394 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:04:57,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 205 transitions, 442 flow [2023-08-28 18:04:57,421 INFO L130 PetriNetUnfolder]: 13/251 cut-off events. [2023-08-28 18:04:57,421 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 18:04:57,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 251 events. 13/251 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 762 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 202. Up to 10 conditions per place. [2023-08-28 18:04:57,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 205 transitions, 442 flow [2023-08-28 18:04:57,425 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 205 transitions, 442 flow [2023-08-28 18:04:57,425 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:04:57,425 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 205 transitions, 442 flow [2023-08-28 18:04:57,426 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 205 transitions, 442 flow [2023-08-28 18:04:57,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 205 transitions, 442 flow [2023-08-28 18:04:57,447 INFO L130 PetriNetUnfolder]: 13/251 cut-off events. [2023-08-28 18:04:57,447 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 18:04:57,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 251 events. 13/251 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 762 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 202. Up to 10 conditions per place. [2023-08-28 18:04:57,455 INFO L119 LiptonReduction]: Number of co-enabled transitions 28336 [2023-08-28 18:05:00,287 INFO L134 LiptonReduction]: Checked pairs total: 51562 [2023-08-28 18:05:00,288 INFO L136 LiptonReduction]: Total number of compositions: 194 [2023-08-28 18:05:00,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:05:00,289 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;@5d7a061e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:05:00,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:05:00,295 INFO L130 PetriNetUnfolder]: 3/74 cut-off events. [2023-08-28 18:05:00,296 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 18:05:00,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:05:00,296 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-28 18:05:00,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:05:00,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:05:00,297 INFO L85 PathProgramCache]: Analyzing trace with hash -52326427, now seen corresponding path program 1 times [2023-08-28 18:05:00,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:05:00,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013268221] [2023-08-28 18:05:00,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:05:00,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:05:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:05:00,316 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:05:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:05:00,336 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:05:00,336 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:05:00,336 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:05:00,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-28 18:05:00,338 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:05:00,340 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:05:00,340 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:05:00,340 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-28 18:05:00,368 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:05:00,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 250 transitions, 545 flow [2023-08-28 18:05:00,404 INFO L130 PetriNetUnfolder]: 16/308 cut-off events. [2023-08-28 18:05:00,404 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 18:05:00,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 308 events. 16/308 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1039 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 264. Up to 12 conditions per place. [2023-08-28 18:05:00,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 250 transitions, 545 flow [2023-08-28 18:05:00,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 250 transitions, 545 flow [2023-08-28 18:05:00,411 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:05:00,411 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 250 transitions, 545 flow [2023-08-28 18:05:00,412 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 250 transitions, 545 flow [2023-08-28 18:05:00,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 250 transitions, 545 flow [2023-08-28 18:05:00,446 INFO L130 PetriNetUnfolder]: 16/308 cut-off events. [2023-08-28 18:05:00,446 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 18:05:00,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 308 events. 16/308 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1039 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 264. Up to 12 conditions per place. [2023-08-28 18:05:00,460 INFO L119 LiptonReduction]: Number of co-enabled transitions 45320 [2023-08-28 18:05:03,543 INFO L134 LiptonReduction]: Checked pairs total: 89220 [2023-08-28 18:05:03,543 INFO L136 LiptonReduction]: Total number of compositions: 238 [2023-08-28 18:05:03,544 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:05:03,544 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;@5d7a061e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:05:03,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-08-28 18:05:03,546 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2023-08-28 18:05:03,546 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:05:03,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:05:03,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:05:03,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2023-08-28 18:05:03,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:05:03,547 INFO L85 PathProgramCache]: Analyzing trace with hash 77717685, now seen corresponding path program 1 times [2023-08-28 18:05:03,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:05:03,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844361202] [2023-08-28 18:05:03,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:05:03,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:05:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:05:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:05:03,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:05:03,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844361202] [2023-08-28 18:05:03,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844361202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:05:03,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:05:03,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:05:03,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256349434] [2023-08-28 18:05:03,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:05:03,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:05:03,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:05:03,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:05:03,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:05:03,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 488 [2023-08-28 18:05:03,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 217 flow. Second operand has 2 states, 2 states have (on average 190.0) internal successors, (380), 2 states have internal predecessors, (380), 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) [2023-08-28 18:05:03,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:05:03,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 488 [2023-08-28 18:05:03,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:05:11,919 INFO L130 PetriNetUnfolder]: 81805/109627 cut-off events. [2023-08-28 18:05:11,920 INFO L131 PetriNetUnfolder]: For 29644/29644 co-relation queries the response was YES. [2023-08-28 18:05:12,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223441 conditions, 109627 events. 81805/109627 cut-off events. For 29644/29644 co-relation queries the response was YES. Maximal size of possible extension queue 3392. Compared 717730 event pairs, 66875 based on Foata normal form. 0/90075 useless extension candidates. Maximal degree in co-relation 31021. Up to 100468 conditions per place. [2023-08-28 18:05:12,687 INFO L137 encePairwiseOnDemand]: 457/488 looper letters, 37 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2023-08-28 18:05:12,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 229 flow [2023-08-28 18:05:12,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:05:12,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:05:12,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 444 transitions. [2023-08-28 18:05:12,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45491803278688525 [2023-08-28 18:05:12,689 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 444 transitions. [2023-08-28 18:05:12,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 444 transitions. [2023-08-28 18:05:12,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:05:12,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 444 transitions. [2023-08-28 18:05:12,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 222.0) internal successors, (444), 2 states have internal predecessors, (444), 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) [2023-08-28 18:05:12,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 488.0) internal successors, (1464), 3 states have internal predecessors, (1464), 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) [2023-08-28 18:05:12,694 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 488.0) internal successors, (1464), 3 states have internal predecessors, (1464), 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) [2023-08-28 18:05:12,694 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 217 flow. Second operand 2 states and 444 transitions. [2023-08-28 18:05:12,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 229 flow [2023-08-28 18:05:12,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 209 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-28 18:05:12,714 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 135 flow [2023-08-28 18:05:12,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=135, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2023-08-28 18:05:12,715 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -30 predicate places. [2023-08-28 18:05:12,715 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 135 flow [2023-08-28 18:05:12,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 190.0) internal successors, (380), 2 states have internal predecessors, (380), 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) [2023-08-28 18:05:12,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:05:12,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:05:12,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-28 18:05:12,716 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2023-08-28 18:05:12,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:05:12,716 INFO L85 PathProgramCache]: Analyzing trace with hash 302295422, now seen corresponding path program 1 times [2023-08-28 18:05:12,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:05:12,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948555481] [2023-08-28 18:05:12,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:05:12,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:05:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:05:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:05:12,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:05:12,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948555481] [2023-08-28 18:05:12,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948555481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:05:12,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:05:12,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:05:12,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111477787] [2023-08-28 18:05:12,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:05:12,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:05:12,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:05:12,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:05:12,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:05:12,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 488 [2023-08-28 18:05:12,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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) [2023-08-28 18:05:12,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:05:12,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 488 [2023-08-28 18:05:12,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:06:19,482 INFO L130 PetriNetUnfolder]: 824381/1036560 cut-off events. [2023-08-28 18:06:19,482 INFO L131 PetriNetUnfolder]: For 30698/30698 co-relation queries the response was YES. [2023-08-28 18:06:21,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2098282 conditions, 1036560 events. 824381/1036560 cut-off events. For 30698/30698 co-relation queries the response was YES. Maximal size of possible extension queue 31872. Compared 7067695 event pairs, 317834 based on Foata normal form. 0/885395 useless extension candidates. Maximal degree in co-relation 2098274. Up to 620089 conditions per place. [2023-08-28 18:06:27,352 INFO L137 encePairwiseOnDemand]: 463/488 looper letters, 77 selfloop transitions, 20 changer transitions 0/100 dead transitions. [2023-08-28 18:06:27,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 100 transitions, 439 flow [2023-08-28 18:06:27,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 18:06:27,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 18:06:27,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 621 transitions. [2023-08-28 18:06:27,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42418032786885246 [2023-08-28 18:06:27,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 621 transitions. [2023-08-28 18:06:27,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 621 transitions. [2023-08-28 18:06:27,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:06:27,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 621 transitions. [2023-08-28 18:06:27,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.0) internal successors, (621), 3 states have internal predecessors, (621), 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) [2023-08-28 18:06:27,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 488.0) internal successors, (1952), 4 states have internal predecessors, (1952), 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) [2023-08-28 18:06:27,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 488.0) internal successors, (1952), 4 states have internal predecessors, (1952), 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) [2023-08-28 18:06:27,375 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 135 flow. Second operand 3 states and 621 transitions. [2023-08-28 18:06:27,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 100 transitions, 439 flow [2023-08-28 18:06:27,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 100 transitions, 439 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 18:06:27,448 INFO L231 Difference]: Finished difference. Result has 66 places, 75 transitions, 305 flow [2023-08-28 18:06:27,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=66, PETRI_TRANSITIONS=75} [2023-08-28 18:06:27,451 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -26 predicate places. [2023-08-28 18:06:27,451 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 75 transitions, 305 flow [2023-08-28 18:06:27,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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) [2023-08-28 18:06:27,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:06:27,452 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:06:27,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-28 18:06:27,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2023-08-28 18:06:27,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:06:27,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1362427491, now seen corresponding path program 1 times [2023-08-28 18:06:27,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:06:27,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10258041] [2023-08-28 18:06:27,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:06:27,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:06:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:06:27,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-28 18:06:27,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:06:27,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10258041] [2023-08-28 18:06:27,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10258041] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:06:27,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:06:27,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-28 18:06:27,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651824813] [2023-08-28 18:06:27,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:06:27,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-28 18:06:27,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:06:27,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-28 18:06:27,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-28 18:06:27,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 488 [2023-08-28 18:06:27,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 75 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 188.5) internal successors, (754), 4 states have internal predecessors, (754), 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) [2023-08-28 18:06:27,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:06:27,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 488 [2023-08-28 18:06:27,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:06:30,077 INFO L130 PetriNetUnfolder]: 15857/24293 cut-off events. [2023-08-28 18:06:30,077 INFO L131 PetriNetUnfolder]: For 15422/15422 co-relation queries the response was YES. [2023-08-28 18:06:30,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67208 conditions, 24293 events. 15857/24293 cut-off events. For 15422/15422 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 168845 event pairs, 665 based on Foata normal form. 6236/30475 useless extension candidates. Maximal degree in co-relation 67198. Up to 13859 conditions per place. [2023-08-28 18:06:30,185 INFO L137 encePairwiseOnDemand]: 472/488 looper letters, 0 selfloop transitions, 0 changer transitions 120/120 dead transitions. [2023-08-28 18:06:30,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 120 transitions, 709 flow [2023-08-28 18:06:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-28 18:06:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-28 18:06:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1027 transitions. [2023-08-28 18:06:30,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4209016393442623 [2023-08-28 18:06:30,194 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1027 transitions. [2023-08-28 18:06:30,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1027 transitions. [2023-08-28 18:06:30,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:06:30,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1027 transitions. [2023-08-28 18:06:30,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.4) internal successors, (1027), 5 states have internal predecessors, (1027), 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) [2023-08-28 18:06:30,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 488.0) internal successors, (2928), 6 states have internal predecessors, (2928), 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) [2023-08-28 18:06:30,237 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 488.0) internal successors, (2928), 6 states have internal predecessors, (2928), 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) [2023-08-28 18:06:30,238 INFO L175 Difference]: Start difference. First operand has 66 places, 75 transitions, 305 flow. Second operand 5 states and 1027 transitions. [2023-08-28 18:06:30,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 120 transitions, 709 flow [2023-08-28 18:06:30,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 120 transitions, 649 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 18:06:30,319 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2023-08-28 18:06:30,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=488, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2023-08-28 18:06:30,320 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -29 predicate places. [2023-08-28 18:06:30,320 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2023-08-28 18:06:30,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.5) internal successors, (754), 4 states have internal predecessors, (754), 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) [2023-08-28 18:06:30,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (41 of 42 remaining) [2023-08-28 18:06:30,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (40 of 42 remaining) [2023-08-28 18:06:30,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (39 of 42 remaining) [2023-08-28 18:06:30,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (38 of 42 remaining) [2023-08-28 18:06:30,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (37 of 42 remaining) [2023-08-28 18:06:30,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (36 of 42 remaining) [2023-08-28 18:06:30,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 42 remaining) [2023-08-28 18:06:30,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (34 of 42 remaining) [2023-08-28 18:06:30,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (33 of 42 remaining) [2023-08-28 18:06:30,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (32 of 42 remaining) [2023-08-28 18:06:30,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (31 of 42 remaining) [2023-08-28 18:06:30,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (30 of 42 remaining) [2023-08-28 18:06:30,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 42 remaining) [2023-08-28 18:06:30,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 42 remaining) [2023-08-28 18:06:30,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (27 of 42 remaining) [2023-08-28 18:06:30,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (26 of 42 remaining) [2023-08-28 18:06:30,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 42 remaining) [2023-08-28 18:06:30,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 42 remaining) [2023-08-28 18:06:30,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (23 of 42 remaining) [2023-08-28 18:06:30,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 42 remaining) [2023-08-28 18:06:30,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 42 remaining) [2023-08-28 18:06:30,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 42 remaining) [2023-08-28 18:06:30,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 42 remaining) [2023-08-28 18:06:30,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 42 remaining) [2023-08-28 18:06:30,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 42 remaining) [2023-08-28 18:06:30,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 42 remaining) [2023-08-28 18:06:30,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 42 remaining) [2023-08-28 18:06:30,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 42 remaining) [2023-08-28 18:06:30,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 42 remaining) [2023-08-28 18:06:30,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 42 remaining) [2023-08-28 18:06:30,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 42 remaining) [2023-08-28 18:06:30,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 42 remaining) [2023-08-28 18:06:30,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 42 remaining) [2023-08-28 18:06:30,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 42 remaining) [2023-08-28 18:06:30,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 42 remaining) [2023-08-28 18:06:30,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 42 remaining) [2023-08-28 18:06:30,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 42 remaining) [2023-08-28 18:06:30,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 42 remaining) [2023-08-28 18:06:30,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 42 remaining) [2023-08-28 18:06:30,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 42 remaining) [2023-08-28 18:06:30,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 42 remaining) [2023-08-28 18:06:30,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 42 remaining) [2023-08-28 18:06:30,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-28 18:06:30,337 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-28 18:06:30,338 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:06:30,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 250 transitions, 545 flow [2023-08-28 18:06:30,389 INFO L130 PetriNetUnfolder]: 16/308 cut-off events. [2023-08-28 18:06:30,389 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 18:06:30,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 308 events. 16/308 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1039 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 264. Up to 12 conditions per place. [2023-08-28 18:06:30,393 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 250 transitions, 545 flow [2023-08-28 18:06:30,395 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 250 transitions, 545 flow [2023-08-28 18:06:30,395 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:06:30,395 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 250 transitions, 545 flow [2023-08-28 18:06:30,395 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 250 transitions, 545 flow [2023-08-28 18:06:30,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 250 transitions, 545 flow [2023-08-28 18:06:30,428 INFO L130 PetriNetUnfolder]: 16/308 cut-off events. [2023-08-28 18:06:30,429 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 18:06:30,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 308 events. 16/308 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1039 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 264. Up to 12 conditions per place. [2023-08-28 18:06:30,454 INFO L119 LiptonReduction]: Number of co-enabled transitions 45320 [2023-08-28 18:06:34,067 INFO L134 LiptonReduction]: Checked pairs total: 88556 [2023-08-28 18:06:34,068 INFO L136 LiptonReduction]: Total number of compositions: 235 [2023-08-28 18:06:34,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:06:34,069 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;@5d7a061e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:06:34,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:06:34,077 INFO L130 PetriNetUnfolder]: 4/94 cut-off events. [2023-08-28 18:06:34,078 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 18:06:34,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:06:34,078 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:06:34,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:06:34,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:06:34,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1582787486, now seen corresponding path program 1 times [2023-08-28 18:06:34,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:06:34,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123946237] [2023-08-28 18:06:34,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:06:34,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:06:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:06:34,100 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:06:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:06:34,117 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:06:34,117 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:06:34,117 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:06:34,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-28 18:06:34,118 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:06:34,119 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:06:34,119 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:06:34,119 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-28 18:06:34,155 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:06:34,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 295 transitions, 650 flow [2023-08-28 18:06:34,206 INFO L130 PetriNetUnfolder]: 19/365 cut-off events. [2023-08-28 18:06:34,206 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-28 18:06:34,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 365 events. 19/365 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1283 event pairs, 0 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 329. Up to 14 conditions per place. [2023-08-28 18:06:34,211 INFO L82 GeneralOperation]: Start removeDead. Operand has 295 places, 295 transitions, 650 flow [2023-08-28 18:06:34,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 295 places, 295 transitions, 650 flow [2023-08-28 18:06:34,215 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:06:34,215 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 295 places, 295 transitions, 650 flow [2023-08-28 18:06:34,215 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 295 places, 295 transitions, 650 flow [2023-08-28 18:06:34,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 295 places, 295 transitions, 650 flow [2023-08-28 18:06:34,285 INFO L130 PetriNetUnfolder]: 19/365 cut-off events. [2023-08-28 18:06:34,300 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-28 18:06:34,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 365 events. 19/365 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1283 event pairs, 0 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 329. Up to 14 conditions per place. [2023-08-28 18:06:34,319 INFO L119 LiptonReduction]: Number of co-enabled transitions 66264 [2023-08-28 18:06:39,076 INFO L134 LiptonReduction]: Checked pairs total: 136043 [2023-08-28 18:06:39,076 INFO L136 LiptonReduction]: Total number of compositions: 278 [2023-08-28 18:06:39,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:06:39,078 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;@5d7a061e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:06:39,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-08-28 18:06:39,079 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:06:39,079 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:06:39,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:06:39,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:06:39,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-08-28 18:06:39,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:06:39,079 INFO L85 PathProgramCache]: Analyzing trace with hash 103891522, now seen corresponding path program 1 times [2023-08-28 18:06:39,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:06:39,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938086448] [2023-08-28 18:06:39,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:06:39,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:06:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:06:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:06:39,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:06:39,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938086448] [2023-08-28 18:06:39,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938086448] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:06:39,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:06:39,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:06:39,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795790784] [2023-08-28 18:06:39,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:06:39,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:06:39,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:06:39,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:06:39,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:06:39,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 573 [2023-08-28 18:06:39,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 102 transitions, 264 flow. Second operand has 2 states, 2 states have (on average 223.0) internal successors, (446), 2 states have internal predecessors, (446), 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) [2023-08-28 18:06:39,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:06:39,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 573 [2023-08-28 18:06:39,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:07:45,365 INFO L130 PetriNetUnfolder]: 602797/769723 cut-off events. [2023-08-28 18:07:45,366 INFO L131 PetriNetUnfolder]: For 256876/256876 co-relation queries the response was YES. [2023-08-28 18:07:47,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1579058 conditions, 769723 events. 602797/769723 cut-off events. For 256876/256876 co-relation queries the response was YES. Maximal size of possible extension queue 18736. Compared 5294046 event pairs, 494555 based on Foata normal form. 0/633746 useless extension candidates. Maximal degree in co-relation 225853. Up to 714772 conditions per place. [2023-08-28 18:07:49,914 INFO L137 encePairwiseOnDemand]: 536/573 looper letters, 44 selfloop transitions, 0 changer transitions 0/65 dead transitions. [2023-08-28 18:07:49,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 65 transitions, 278 flow [2023-08-28 18:07:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:07:49,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:07:49,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 523 transitions. [2023-08-28 18:07:49,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.456369982547993 [2023-08-28 18:07:49,916 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 523 transitions. [2023-08-28 18:07:49,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 523 transitions. [2023-08-28 18:07:49,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:07:49,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 523 transitions. [2023-08-28 18:07:49,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 261.5) internal successors, (523), 2 states have internal predecessors, (523), 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) [2023-08-28 18:07:49,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 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) [2023-08-28 18:07:49,919 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 573.0) internal successors, (1719), 3 states have internal predecessors, (1719), 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) [2023-08-28 18:07:49,919 INFO L175 Difference]: Start difference. First operand has 109 places, 102 transitions, 264 flow. Second operand 2 states and 523 transitions. [2023-08-28 18:07:49,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 65 transitions, 278 flow [2023-08-28 18:07:50,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 65 transitions, 248 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-08-28 18:07:50,241 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 160 flow [2023-08-28 18:07:50,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=573, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=160, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-08-28 18:07:50,242 INFO L281 CegarLoopForPetriNet]: 109 programPoint places, -36 predicate places. [2023-08-28 18:07:50,242 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 160 flow [2023-08-28 18:07:50,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 223.0) internal successors, (446), 2 states have internal predecessors, (446), 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) [2023-08-28 18:07:50,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:07:50,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:07:50,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-28 18:07:50,243 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2023-08-28 18:07:50,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:07:50,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1635735103, now seen corresponding path program 1 times [2023-08-28 18:07:50,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:07:50,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523764030] [2023-08-28 18:07:50,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:07:50,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:07:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:07:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:07:50,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:07:50,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523764030] [2023-08-28 18:07:50,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523764030] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:07:50,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:07:50,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 18:07:50,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607219489] [2023-08-28 18:07:50,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:07:50,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 18:07:50,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:07:50,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 18:07:50,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 18:07:50,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 573 [2023-08-28 18:07:50,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 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) [2023-08-28 18:07:50,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:07:50,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 573 [2023-08-28 18:07:50,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand