./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/01b_inc.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/01b_inc.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 a50cd99e32ae608752174b749acce795b64973c8c13edb78d7146b3ab3630fc9 --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 17:53:19,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-28 17:53:19,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-28 17:53:19,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-28 17:53:19,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-28 17:53:19,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-28 17:53:19,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-28 17:53:19,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-28 17:53:19,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-28 17:53:19,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-28 17:53:19,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-28 17:53:19,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-28 17:53:19,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-28 17:53:19,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-28 17:53:19,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-28 17:53:19,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-28 17:53:19,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-28 17:53:19,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-28 17:53:19,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-28 17:53:19,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-28 17:53:19,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-28 17:53:19,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-28 17:53:19,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-28 17:53:19,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-28 17:53:19,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-28 17:53:19,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-28 17:53:19,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-28 17:53:19,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-28 17:53:19,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-28 17:53:19,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-28 17:53:19,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-28 17:53:19,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-28 17:53:19,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-28 17:53:19,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-28 17:53:19,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-28 17:53:19,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-28 17:53:19,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-28 17:53:19,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-28 17:53:19,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-28 17:53:19,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-28 17:53:19,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-28 17:53:19,292 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-28 17:53:19,325 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-28 17:53:19,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-28 17:53:19,326 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-28 17:53:19,327 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-28 17:53:19,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-28 17:53:19,328 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-28 17:53:19,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-28 17:53:19,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-28 17:53:19,329 INFO L138 SettingsManager]: * Use SBE=true [2023-08-28 17:53:19,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-28 17:53:19,330 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-28 17:53:19,330 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-28 17:53:19,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-28 17:53:19,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-28 17:53:19,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-28 17:53:19,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-28 17:53:19,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-28 17:53:19,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-28 17:53:19,331 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-28 17:53:19,331 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-28 17:53:19,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-28 17:53:19,332 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-28 17:53:19,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-28 17:53:19,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-28 17:53:19,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-28 17:53:19,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-28 17:53:19,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 17:53:19,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-28 17:53:19,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-28 17:53:19,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-28 17:53:19,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-28 17:53:19,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-28 17:53:19,334 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-28 17:53:19,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-28 17:53:19,334 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-28 17:53:19,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-28 17:53:19,335 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-28 17:53:19,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50cd99e32ae608752174b749acce795b64973c8c13edb78d7146b3ab3630fc9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-28 17:53:19,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-28 17:53:19,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-28 17:53:19,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-28 17:53:19,675 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-28 17:53:19,675 INFO L275 PluginConnector]: CDTParser initialized [2023-08-28 17:53:19,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/01b_inc.i [2023-08-28 17:53:20,754 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-28 17:53:21,023 INFO L351 CDTParser]: Found 1 translation units. [2023-08-28 17:53:21,023 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc.i [2023-08-28 17:53:21,040 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4358c53e4/5c3b4d22a82d47ac832c6a31364ada14/FLAG344f18f04 [2023-08-28 17:53:21,055 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4358c53e4/5c3b4d22a82d47ac832c6a31364ada14 [2023-08-28 17:53:21,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-28 17:53:21,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-28 17:53:21,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-28 17:53:21,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-28 17:53:21,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-28 17:53:21,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 05:53:21" (1/1) ... [2023-08-28 17:53:21,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6130e273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:21, skipping insertion in model container [2023-08-28 17:53:21,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 05:53:21" (1/1) ... [2023-08-28 17:53:21,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-28 17:53:21,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-28 17:53:21,302 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-28 17:53:21,443 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/01b_inc.i[31005,31018] [2023-08-28 17:53:21,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 17:53:21,459 INFO L203 MainTranslator]: Completed pre-run [2023-08-28 17:53:21,473 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-28 17:53:21,489 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/01b_inc.i[31005,31018] [2023-08-28 17:53:21,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 17:53:21,525 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-28 17:53:21,525 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-28 17:53:21,526 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-28 17:53:21,532 INFO L208 MainTranslator]: Completed translation [2023-08-28 17:53:21,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:21 WrapperNode [2023-08-28 17:53:21,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-28 17:53:21,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-28 17:53:21,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-28 17:53:21,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-28 17:53:21,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:21" (1/1) ... [2023-08-28 17:53:21,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:21" (1/1) ... [2023-08-28 17:53:21,566 INFO L138 Inliner]: procedures = 173, calls = 20, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 90 [2023-08-28 17:53:21,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-28 17:53:21,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-28 17:53:21,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-28 17:53:21,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-28 17:53:21,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:21" (1/1) ... [2023-08-28 17:53:21,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:21" (1/1) ... [2023-08-28 17:53:21,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:21" (1/1) ... [2023-08-28 17:53:21,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:21" (1/1) ... [2023-08-28 17:53:21,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:21" (1/1) ... [2023-08-28 17:53:21,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:21" (1/1) ... [2023-08-28 17:53:21,584 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:21" (1/1) ... [2023-08-28 17:53:21,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:21" (1/1) ... [2023-08-28 17:53:21,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-28 17:53:21,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-28 17:53:21,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-28 17:53:21,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-28 17:53:21,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:21" (1/1) ... [2023-08-28 17:53:21,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 17:53:21,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 17:53:21,622 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 17:53:21,650 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 17:53:21,656 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-28 17:53:21,657 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-28 17:53:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-28 17:53:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-28 17:53:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-28 17:53:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-28 17:53:21,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-28 17:53:21,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-28 17:53:21,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-28 17:53:21,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-28 17:53:21,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-28 17:53:21,659 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 17:53:21,757 INFO L236 CfgBuilder]: Building ICFG [2023-08-28 17:53:21,759 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-28 17:53:21,909 INFO L277 CfgBuilder]: Performing block encoding [2023-08-28 17:53:22,079 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-28 17:53:22,079 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-28 17:53:22,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 05:53:22 BoogieIcfgContainer [2023-08-28 17:53:22,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-28 17:53:22,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-28 17:53:22,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-28 17:53:22,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-28 17:53:22,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 05:53:21" (1/3) ... [2023-08-28 17:53:22,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f83415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 05:53:22, skipping insertion in model container [2023-08-28 17:53:22,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 05:53:21" (2/3) ... [2023-08-28 17:53:22,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f83415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 05:53:22, skipping insertion in model container [2023-08-28 17:53:22,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 05:53:22" (3/3) ... [2023-08-28 17:53:22,101 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc.i [2023-08-28 17:53:22,108 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-28 17:53:22,116 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-28 17:53:22,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-28 17:53:22,116 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-28 17:53:22,178 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 17:53:22,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 53 transitions, 111 flow [2023-08-28 17:53:22,273 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2023-08-28 17:53:22,277 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:22,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 94 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 39. Up to 4 conditions per place. [2023-08-28 17:53:22,283 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 53 transitions, 111 flow [2023-08-28 17:53:22,287 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 53 transitions, 111 flow [2023-08-28 17:53:22,290 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:53:22,302 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 53 transitions, 111 flow [2023-08-28 17:53:22,306 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 53 transitions, 111 flow [2023-08-28 17:53:22,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 53 transitions, 111 flow [2023-08-28 17:53:22,336 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2023-08-28 17:53:22,336 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:22,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 94 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 39. Up to 4 conditions per place. [2023-08-28 17:53:22,339 INFO L119 LiptonReduction]: Number of co-enabled transitions 702 [2023-08-28 17:53:24,297 INFO L134 LiptonReduction]: Checked pairs total: 767 [2023-08-28 17:53:24,297 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-08-28 17:53:24,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 17:53:24,327 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;@f9f3ede, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:53:24,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-28 17:53:24,331 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 17:53:24,331 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:24,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:24,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 17:53:24,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-08-28 17:53:24,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:24,337 INFO L85 PathProgramCache]: Analyzing trace with hash 11341974, now seen corresponding path program 1 times [2023-08-28 17:53:24,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:24,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928659996] [2023-08-28 17:53:24,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:24,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:24,483 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 17:53:24,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:24,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928659996] [2023-08-28 17:53:24,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928659996] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:24,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:24,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 17:53:24,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521846369] [2023-08-28 17:53:24,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:24,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 17:53:24,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:24,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 17:53:24,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 17:53:24,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 118 [2023-08-28 17:53:24,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 17 transitions, 39 flow. Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 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 17:53:24,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:24,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 118 [2023-08-28 17:53:24,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:24,597 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2023-08-28 17:53:24,598 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:24,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 12 events. 2/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 2 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 14. Up to 11 conditions per place. [2023-08-28 17:53:24,599 INFO L137 encePairwiseOnDemand]: 107/118 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2023-08-28 17:53:24,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 27 flow [2023-08-28 17:53:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 17:53:24,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 17:53:24,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 90 transitions. [2023-08-28 17:53:24,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813559322033898 [2023-08-28 17:53:24,613 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 90 transitions. [2023-08-28 17:53:24,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 90 transitions. [2023-08-28 17:53:24,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:24,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 90 transitions. [2023-08-28 17:53:24,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 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 17:53:24,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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 17:53:24,625 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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 17:53:24,627 INFO L175 Difference]: Start difference. First operand has 20 places, 17 transitions, 39 flow. Second operand 2 states and 90 transitions. [2023-08-28 17:53:24,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 27 flow [2023-08-28 17:53:24,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 17:53:24,630 INFO L231 Difference]: Finished difference. Result has 10 places, 0 transitions, 0 flow [2023-08-28 17:53:24,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=10, PETRI_TRANSITIONS=0} [2023-08-28 17:53:24,635 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -10 predicate places. [2023-08-28 17:53:24,635 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 0 transitions, 0 flow [2023-08-28 17:53:24,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 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 17:53:24,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 20 remaining) [2023-08-28 17:53:24,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-08-28 17:53:24,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-08-28 17:53:24,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2023-08-28 17:53:24,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-08-28 17:53:24,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2023-08-28 17:53:24,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-08-28 17:53:24,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-08-28 17:53:24,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2023-08-28 17:53:24,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2023-08-28 17:53:24,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2023-08-28 17:53:24,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2023-08-28 17:53:24,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2023-08-28 17:53:24,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-08-28 17:53:24,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-08-28 17:53:24,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2023-08-28 17:53:24,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2023-08-28 17:53:24,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2023-08-28 17:53:24,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-08-28 17:53:24,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2023-08-28 17:53:24,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-28 17:53:24,646 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 17:53:24,649 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 (1/2) [2023-08-28 17:53:24,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 53 transitions, 111 flow [2023-08-28 17:53:24,662 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2023-08-28 17:53:24,662 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:24,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 94 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 39. Up to 4 conditions per place. [2023-08-28 17:53:24,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 53 transitions, 111 flow [2023-08-28 17:53:24,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 53 transitions, 111 flow [2023-08-28 17:53:24,664 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:53:24,664 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 53 transitions, 111 flow [2023-08-28 17:53:24,664 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 53 transitions, 111 flow [2023-08-28 17:53:24,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 53 transitions, 111 flow [2023-08-28 17:53:24,672 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2023-08-28 17:53:24,673 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:24,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 94 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 39. Up to 4 conditions per place. [2023-08-28 17:53:24,674 INFO L119 LiptonReduction]: Number of co-enabled transitions 702 [2023-08-28 17:53:26,284 INFO L134 LiptonReduction]: Checked pairs total: 767 [2023-08-28 17:53:26,285 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-08-28 17:53:26,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 17:53:26,287 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;@f9f3ede, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:53:26,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 17:53:26,290 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2023-08-28 17:53:26,290 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:26,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:26,291 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-28 17:53:26,291 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 17:53:26,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:26,292 INFO L85 PathProgramCache]: Analyzing trace with hash -31050266, now seen corresponding path program 1 times [2023-08-28 17:53:26,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:26,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170030951] [2023-08-28 17:53:26,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:26,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:53:26,311 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 17:53:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:53:26,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 17:53:26,341 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 17:53:26,341 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 17:53:26,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-28 17:53:26,342 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 17:53:26,346 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 17:53:26,347 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 17:53:26,347 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-28 17:53:26,365 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 17:53:26,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 81 transitions, 174 flow [2023-08-28 17:53:26,391 INFO L130 PetriNetUnfolder]: 5/103 cut-off events. [2023-08-28 17:53:26,392 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 17:53:26,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 103 events. 5/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 237 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 66. Up to 6 conditions per place. [2023-08-28 17:53:26,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 81 transitions, 174 flow [2023-08-28 17:53:26,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 81 transitions, 174 flow [2023-08-28 17:53:26,397 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:53:26,397 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 81 transitions, 174 flow [2023-08-28 17:53:26,398 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 81 transitions, 174 flow [2023-08-28 17:53:26,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 81 transitions, 174 flow [2023-08-28 17:53:26,416 INFO L130 PetriNetUnfolder]: 5/103 cut-off events. [2023-08-28 17:53:26,416 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 17:53:26,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 103 events. 5/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 237 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 66. Up to 6 conditions per place. [2023-08-28 17:53:26,418 INFO L119 LiptonReduction]: Number of co-enabled transitions 2916 [2023-08-28 17:53:27,349 INFO L134 LiptonReduction]: Checked pairs total: 15905 [2023-08-28 17:53:27,349 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-08-28 17:53:27,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 17:53:27,353 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;@f9f3ede, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:53:27,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-28 17:53:27,354 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 17:53:27,354 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:27,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:27,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 17:53:27,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-28 17:53:27,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:27,355 INFO L85 PathProgramCache]: Analyzing trace with hash 18220730, now seen corresponding path program 1 times [2023-08-28 17:53:27,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:27,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901471344] [2023-08-28 17:53:27,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:27,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:27,407 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 17:53:27,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:27,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901471344] [2023-08-28 17:53:27,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901471344] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:27,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:27,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 17:53:27,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429280932] [2023-08-28 17:53:27,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:27,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 17:53:27,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:27,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 17:53:27,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 17:53:27,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 127 [2023-08-28 17:53:27,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 116 flow. Second operand has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 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 17:53:27,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:27,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 127 [2023-08-28 17:53:27,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:27,452 INFO L130 PetriNetUnfolder]: 86/252 cut-off events. [2023-08-28 17:53:27,452 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-28 17:53:27,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 252 events. 86/252 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1250 event pairs, 64 based on Foata normal form. 22/228 useless extension candidates. Maximal degree in co-relation 120. Up to 149 conditions per place. [2023-08-28 17:53:27,454 INFO L137 encePairwiseOnDemand]: 110/127 looper letters, 14 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2023-08-28 17:53:27,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 110 flow [2023-08-28 17:53:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 17:53:27,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 17:53:27,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 133 transitions. [2023-08-28 17:53:27,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236220472440944 [2023-08-28 17:53:27,457 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 133 transitions. [2023-08-28 17:53:27,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 133 transitions. [2023-08-28 17:53:27,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:27,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 133 transitions. [2023-08-28 17:53:27,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 66.5) internal successors, (133), 2 states have internal predecessors, (133), 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 17:53:27,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 17:53:27,459 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 17:53:27,459 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 116 flow. Second operand 2 states and 133 transitions. [2023-08-28 17:53:27,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 110 flow [2023-08-28 17:53:27,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 108 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-28 17:53:27,461 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 80 flow [2023-08-28 17:53:27,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, 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=80, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2023-08-28 17:53:27,462 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -16 predicate places. [2023-08-28 17:53:27,463 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 80 flow [2023-08-28 17:53:27,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 53.0) internal successors, (106), 2 states have internal predecessors, (106), 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 17:53:27,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:27,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-28 17:53:27,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-28 17:53:27,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-28 17:53:27,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:27,464 INFO L85 PathProgramCache]: Analyzing trace with hash 330267130, now seen corresponding path program 1 times [2023-08-28 17:53:27,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:27,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535422295] [2023-08-28 17:53:27,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:27,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:27,529 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 17:53:27,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:27,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535422295] [2023-08-28 17:53:27,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535422295] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:27,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:27,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:53:27,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635530219] [2023-08-28 17:53:27,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:27,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:53:27,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:27,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:53:27,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:53:27,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 127 [2023-08-28 17:53:27,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 17:53:27,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:27,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 127 [2023-08-28 17:53:27,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:27,652 INFO L130 PetriNetUnfolder]: 342/683 cut-off events. [2023-08-28 17:53:27,652 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-28 17:53:27,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 683 events. 342/683 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3737 event pairs, 115 based on Foata normal form. 0/634 useless extension candidates. Maximal degree in co-relation 1303. Up to 399 conditions per place. [2023-08-28 17:53:27,655 INFO L137 encePairwiseOnDemand]: 111/127 looper letters, 24 selfloop transitions, 6 changer transitions 16/55 dead transitions. [2023-08-28 17:53:27,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 55 transitions, 217 flow [2023-08-28 17:53:27,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:53:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:53:27,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 167 transitions. [2023-08-28 17:53:27,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43832020997375326 [2023-08-28 17:53:27,658 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 167 transitions. [2023-08-28 17:53:27,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 167 transitions. [2023-08-28 17:53:27,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:27,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 167 transitions. [2023-08-28 17:53:27,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 17:53:27,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:27,661 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:27,661 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 80 flow. Second operand 3 states and 167 transitions. [2023-08-28 17:53:27,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 55 transitions, 217 flow [2023-08-28 17:53:27,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 217 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 17:53:27,663 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 128 flow [2023-08-28 17:53:27,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2023-08-28 17:53:27,664 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -12 predicate places. [2023-08-28 17:53:27,664 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 128 flow [2023-08-28 17:53:27,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 17:53:27,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:27,665 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:53:27,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-28 17:53:27,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-28 17:53:27,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:27,666 INFO L85 PathProgramCache]: Analyzing trace with hash 510153861, now seen corresponding path program 1 times [2023-08-28 17:53:27,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:27,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969020423] [2023-08-28 17:53:27,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:27,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:53:27,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:27,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969020423] [2023-08-28 17:53:27,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969020423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:27,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:27,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-28 17:53:27,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643680245] [2023-08-28 17:53:27,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:27,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:53:27,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:27,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:53:27,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:53:27,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 127 [2023-08-28 17:53:27,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 17:53:27,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:27,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 127 [2023-08-28 17:53:27,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:27,866 INFO L130 PetriNetUnfolder]: 44/212 cut-off events. [2023-08-28 17:53:27,866 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2023-08-28 17:53:27,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 212 events. 44/212 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 966 event pairs, 16 based on Foata normal form. 8/204 useless extension candidates. Maximal degree in co-relation 475. Up to 78 conditions per place. [2023-08-28 17:53:27,867 INFO L137 encePairwiseOnDemand]: 123/127 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-08-28 17:53:27,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 165 flow [2023-08-28 17:53:27,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:53:27,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:53:27,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2023-08-28 17:53:27,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409448818897638 [2023-08-28 17:53:27,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 168 transitions. [2023-08-28 17:53:27,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 168 transitions. [2023-08-28 17:53:27,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:27,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 168 transitions. [2023-08-28 17:53:27,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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 17:53:27,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:27,872 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 17:53:27,872 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 128 flow. Second operand 3 states and 168 transitions. [2023-08-28 17:53:27,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 165 flow [2023-08-28 17:53:27,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 137 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-28 17:53:27,874 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-08-28 17:53:27,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-08-28 17:53:27,875 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -16 predicate places. [2023-08-28 17:53:27,875 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-08-28 17:53:27,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 17:53:27,875 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (29 of 30 remaining) [2023-08-28 17:53:27,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 30 remaining) [2023-08-28 17:53:27,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 30 remaining) [2023-08-28 17:53:27,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 30 remaining) [2023-08-28 17:53:27,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 30 remaining) [2023-08-28 17:53:27,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (24 of 30 remaining) [2023-08-28 17:53:27,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 30 remaining) [2023-08-28 17:53:27,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (22 of 30 remaining) [2023-08-28 17:53:27,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 30 remaining) [2023-08-28 17:53:27,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (20 of 30 remaining) [2023-08-28 17:53:27,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 30 remaining) [2023-08-28 17:53:27,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 30 remaining) [2023-08-28 17:53:27,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (17 of 30 remaining) [2023-08-28 17:53:27,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 30 remaining) [2023-08-28 17:53:27,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 30 remaining) [2023-08-28 17:53:27,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 30 remaining) [2023-08-28 17:53:27,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 30 remaining) [2023-08-28 17:53:27,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (12 of 30 remaining) [2023-08-28 17:53:27,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 30 remaining) [2023-08-28 17:53:27,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (10 of 30 remaining) [2023-08-28 17:53:27,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (9 of 30 remaining) [2023-08-28 17:53:27,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (8 of 30 remaining) [2023-08-28 17:53:27,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (7 of 30 remaining) [2023-08-28 17:53:27,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (6 of 30 remaining) [2023-08-28 17:53:27,879 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 30 remaining) [2023-08-28 17:53:27,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 30 remaining) [2023-08-28 17:53:27,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 30 remaining) [2023-08-28 17:53:27,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 30 remaining) [2023-08-28 17:53:27,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 30 remaining) [2023-08-28 17:53:27,880 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 30 remaining) [2023-08-28 17:53:27,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-28 17:53:27,881 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-28 17:53:27,881 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 (1/2) [2023-08-28 17:53:27,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 81 transitions, 174 flow [2023-08-28 17:53:27,890 INFO L130 PetriNetUnfolder]: 5/103 cut-off events. [2023-08-28 17:53:27,891 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 17:53:27,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 103 events. 5/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 237 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 66. Up to 6 conditions per place. [2023-08-28 17:53:27,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 81 transitions, 174 flow [2023-08-28 17:53:27,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 81 transitions, 174 flow [2023-08-28 17:53:27,892 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:53:27,892 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 81 transitions, 174 flow [2023-08-28 17:53:27,892 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 81 transitions, 174 flow [2023-08-28 17:53:27,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 81 transitions, 174 flow [2023-08-28 17:53:27,899 INFO L130 PetriNetUnfolder]: 5/103 cut-off events. [2023-08-28 17:53:27,900 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 17:53:27,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 103 events. 5/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 237 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 66. Up to 6 conditions per place. [2023-08-28 17:53:27,902 INFO L119 LiptonReduction]: Number of co-enabled transitions 2916 [2023-08-28 17:53:28,807 INFO L134 LiptonReduction]: Checked pairs total: 13661 [2023-08-28 17:53:28,808 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-08-28 17:53:28,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 17:53:28,810 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;@f9f3ede, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:53:28,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 17:53:28,813 INFO L130 PetriNetUnfolder]: 0/35 cut-off events. [2023-08-28 17:53:28,813 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 17:53:28,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:28,813 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-28 17:53:28,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 17:53:28,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:28,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1359996375, now seen corresponding path program 1 times [2023-08-28 17:53:28,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:28,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504472894] [2023-08-28 17:53:28,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:28,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:53:28,829 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 17:53:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:53:28,843 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 17:53:28,847 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 17:53:28,847 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 17:53:28,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-28 17:53:28,847 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 17:53:28,848 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 17:53:28,848 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 17:53:28,849 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-28 17:53:28,871 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 17:53:28,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 109 transitions, 239 flow [2023-08-28 17:53:28,904 INFO L130 PetriNetUnfolder]: 7/143 cut-off events. [2023-08-28 17:53:28,904 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 17:53:28,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 143 events. 7/143 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 394 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 107. Up to 8 conditions per place. [2023-08-28 17:53:28,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 109 transitions, 239 flow [2023-08-28 17:53:28,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 109 transitions, 239 flow [2023-08-28 17:53:28,906 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:53:28,907 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 109 transitions, 239 flow [2023-08-28 17:53:28,907 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 109 transitions, 239 flow [2023-08-28 17:53:28,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 109 transitions, 239 flow [2023-08-28 17:53:28,920 INFO L130 PetriNetUnfolder]: 7/143 cut-off events. [2023-08-28 17:53:28,921 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 17:53:28,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 143 events. 7/143 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 394 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 107. Up to 8 conditions per place. [2023-08-28 17:53:28,925 INFO L119 LiptonReduction]: Number of co-enabled transitions 6642 [2023-08-28 17:53:30,080 INFO L134 LiptonReduction]: Checked pairs total: 34981 [2023-08-28 17:53:30,081 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-28 17:53:30,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 17:53:30,082 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;@f9f3ede, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:53:30,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-08-28 17:53:30,083 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2023-08-28 17:53:30,083 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:30,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:30,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 17:53:30,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-08-28 17:53:30,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:30,084 INFO L85 PathProgramCache]: Analyzing trace with hash 25701749, now seen corresponding path program 1 times [2023-08-28 17:53:30,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:30,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123491978] [2023-08-28 17:53:30,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:30,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:30,101 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 17:53:30,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:30,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123491978] [2023-08-28 17:53:30,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123491978] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:30,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:30,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 17:53:30,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223769262] [2023-08-28 17:53:30,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:30,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 17:53:30,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:30,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 17:53:30,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 17:53:30,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 169 [2023-08-28 17:53:30,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 171 flow. Second operand has 2 states, 2 states have (on average 67.0) internal successors, (134), 2 states have internal predecessors, (134), 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 17:53:30,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:30,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 169 [2023-08-28 17:53:30,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:30,236 INFO L130 PetriNetUnfolder]: 736/1484 cut-off events. [2023-08-28 17:53:30,236 INFO L131 PetriNetUnfolder]: For 199/199 co-relation queries the response was YES. [2023-08-28 17:53:30,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2702 conditions, 1484 events. 736/1484 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9918 event pairs, 564 based on Foata normal form. 172/1422 useless extension candidates. Maximal degree in co-relation 435. Up to 1049 conditions per place. [2023-08-28 17:53:30,246 INFO L137 encePairwiseOnDemand]: 144/169 looper letters, 20 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2023-08-28 17:53:30,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 50 transitions, 161 flow [2023-08-28 17:53:30,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 17:53:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 17:53:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 175 transitions. [2023-08-28 17:53:30,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177514792899408 [2023-08-28 17:53:30,248 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 175 transitions. [2023-08-28 17:53:30,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 175 transitions. [2023-08-28 17:53:30,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:30,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 175 transitions. [2023-08-28 17:53:30,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 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 17:53:30,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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 17:53:30,251 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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 17:53:30,251 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 171 flow. Second operand 2 states and 175 transitions. [2023-08-28 17:53:30,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 50 transitions, 161 flow [2023-08-28 17:53:30,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 155 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-28 17:53:30,253 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 115 flow [2023-08-28 17:53:30,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=115, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-08-28 17:53:30,254 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -24 predicate places. [2023-08-28 17:53:30,254 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 115 flow [2023-08-28 17:53:30,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 67.0) internal successors, (134), 2 states have internal predecessors, (134), 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 17:53:30,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:30,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-28 17:53:30,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-28 17:53:30,255 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-08-28 17:53:30,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:30,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1070399849, now seen corresponding path program 1 times [2023-08-28 17:53:30,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:30,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374595143] [2023-08-28 17:53:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:30,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:30,283 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 17:53:30,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:30,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374595143] [2023-08-28 17:53:30,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374595143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:30,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:30,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:53:30,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229463875] [2023-08-28 17:53:30,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:30,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:53:30,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:30,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:53:30,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:53:30,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 169 [2023-08-28 17:53:30,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 17:53:30,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:30,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 169 [2023-08-28 17:53:30,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:31,200 INFO L130 PetriNetUnfolder]: 7268/11575 cut-off events. [2023-08-28 17:53:31,201 INFO L131 PetriNetUnfolder]: For 358/358 co-relation queries the response was YES. [2023-08-28 17:53:31,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22452 conditions, 11575 events. 7268/11575 cut-off events. For 358/358 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 83387 event pairs, 2611 based on Foata normal form. 0/10692 useless extension candidates. Maximal degree in co-relation 22446. Up to 7133 conditions per place. [2023-08-28 17:53:31,262 INFO L137 encePairwiseOnDemand]: 145/169 looper letters, 50 selfloop transitions, 18 changer transitions 0/80 dead transitions. [2023-08-28 17:53:31,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 80 transitions, 321 flow [2023-08-28 17:53:31,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:53:31,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:53:31,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2023-08-28 17:53:31,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4240631163708087 [2023-08-28 17:53:31,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2023-08-28 17:53:31,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2023-08-28 17:53:31,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:31,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2023-08-28 17:53:31,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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 17:53:31,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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 17:53:31,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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 17:53:31,267 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 115 flow. Second operand 3 states and 215 transitions. [2023-08-28 17:53:31,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 80 transitions, 321 flow [2023-08-28 17:53:31,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 80 transitions, 321 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 17:53:31,270 INFO L231 Difference]: Finished difference. Result has 59 places, 68 transitions, 271 flow [2023-08-28 17:53:31,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=59, PETRI_TRANSITIONS=68} [2023-08-28 17:53:31,271 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -20 predicate places. [2023-08-28 17:53:31,271 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 68 transitions, 271 flow [2023-08-28 17:53:31,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 17:53:31,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:31,271 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:53:31,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-28 17:53:31,272 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-08-28 17:53:31,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:31,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1252130859, now seen corresponding path program 1 times [2023-08-28 17:53:31,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:31,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689168787] [2023-08-28 17:53:31,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:31,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:53:31,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:31,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689168787] [2023-08-28 17:53:31,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689168787] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:31,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:31,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-28 17:53:31,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184274087] [2023-08-28 17:53:31,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:31,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:53:31,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:31,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:53:31,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:53:31,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 169 [2023-08-28 17:53:31,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 68 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 17:53:31,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:31,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 169 [2023-08-28 17:53:31,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:31,518 INFO L130 PetriNetUnfolder]: 583/1390 cut-off events. [2023-08-28 17:53:31,518 INFO L131 PetriNetUnfolder]: For 786/786 co-relation queries the response was YES. [2023-08-28 17:53:31,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3342 conditions, 1390 events. 583/1390 cut-off events. For 786/786 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 8399 event pairs, 84 based on Foata normal form. 92/1407 useless extension candidates. Maximal degree in co-relation 3334. Up to 650 conditions per place. [2023-08-28 17:53:31,522 INFO L137 encePairwiseOnDemand]: 160/169 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2023-08-28 17:53:31,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 291 flow [2023-08-28 17:53:31,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:53:31,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:53:31,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 221 transitions. [2023-08-28 17:53:31,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2023-08-28 17:53:31,524 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 221 transitions. [2023-08-28 17:53:31,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 221 transitions. [2023-08-28 17:53:31,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:31,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 221 transitions. [2023-08-28 17:53:31,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 17:53:31,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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 17:53:31,527 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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 17:53:31,527 INFO L175 Difference]: Start difference. First operand has 59 places, 68 transitions, 271 flow. Second operand 3 states and 221 transitions. [2023-08-28 17:53:31,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 291 flow [2023-08-28 17:53:31,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 17:53:31,530 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-08-28 17:53:31,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-08-28 17:53:31,531 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -26 predicate places. [2023-08-28 17:53:31,531 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-08-28 17:53:31,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 17:53:31,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (39 of 40 remaining) [2023-08-28 17:53:31,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (38 of 40 remaining) [2023-08-28 17:53:31,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (37 of 40 remaining) [2023-08-28 17:53:31,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (36 of 40 remaining) [2023-08-28 17:53:31,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (35 of 40 remaining) [2023-08-28 17:53:31,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (34 of 40 remaining) [2023-08-28 17:53:31,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (33 of 40 remaining) [2023-08-28 17:53:31,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (32 of 40 remaining) [2023-08-28 17:53:31,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (31 of 40 remaining) [2023-08-28 17:53:31,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (30 of 40 remaining) [2023-08-28 17:53:31,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (29 of 40 remaining) [2023-08-28 17:53:31,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (28 of 40 remaining) [2023-08-28 17:53:31,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (27 of 40 remaining) [2023-08-28 17:53:31,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 40 remaining) [2023-08-28 17:53:31,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (25 of 40 remaining) [2023-08-28 17:53:31,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 40 remaining) [2023-08-28 17:53:31,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 40 remaining) [2023-08-28 17:53:31,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 40 remaining) [2023-08-28 17:53:31,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (21 of 40 remaining) [2023-08-28 17:53:31,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (20 of 40 remaining) [2023-08-28 17:53:31,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 40 remaining) [2023-08-28 17:53:31,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 40 remaining) [2023-08-28 17:53:31,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (17 of 40 remaining) [2023-08-28 17:53:31,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 40 remaining) [2023-08-28 17:53:31,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 40 remaining) [2023-08-28 17:53:31,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (14 of 40 remaining) [2023-08-28 17:53:31,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 40 remaining) [2023-08-28 17:53:31,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (12 of 40 remaining) [2023-08-28 17:53:31,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (11 of 40 remaining) [2023-08-28 17:53:31,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (10 of 40 remaining) [2023-08-28 17:53:31,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (9 of 40 remaining) [2023-08-28 17:53:31,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 40 remaining) [2023-08-28 17:53:31,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 40 remaining) [2023-08-28 17:53:31,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (6 of 40 remaining) [2023-08-28 17:53:31,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 40 remaining) [2023-08-28 17:53:31,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 40 remaining) [2023-08-28 17:53:31,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 40 remaining) [2023-08-28 17:53:31,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (2 of 40 remaining) [2023-08-28 17:53:31,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 40 remaining) [2023-08-28 17:53:31,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 40 remaining) [2023-08-28 17:53:31,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-28 17:53:31,538 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-28 17:53:31,539 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 (1/2) [2023-08-28 17:53:31,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 109 transitions, 239 flow [2023-08-28 17:53:31,555 INFO L130 PetriNetUnfolder]: 7/143 cut-off events. [2023-08-28 17:53:31,556 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 17:53:31,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 143 events. 7/143 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 394 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 107. Up to 8 conditions per place. [2023-08-28 17:53:31,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 109 transitions, 239 flow [2023-08-28 17:53:31,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 109 transitions, 239 flow [2023-08-28 17:53:31,558 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:53:31,558 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 109 transitions, 239 flow [2023-08-28 17:53:31,558 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 109 transitions, 239 flow [2023-08-28 17:53:31,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 109 transitions, 239 flow [2023-08-28 17:53:31,569 INFO L130 PetriNetUnfolder]: 7/143 cut-off events. [2023-08-28 17:53:31,569 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 17:53:31,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 143 events. 7/143 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 394 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 107. Up to 8 conditions per place. [2023-08-28 17:53:31,573 INFO L119 LiptonReduction]: Number of co-enabled transitions 6642 [2023-08-28 17:53:32,722 INFO L134 LiptonReduction]: Checked pairs total: 41011 [2023-08-28 17:53:32,722 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-28 17:53:32,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 17:53:32,724 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;@f9f3ede, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:53:32,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 17:53:32,730 INFO L130 PetriNetUnfolder]: 1/62 cut-off events. [2023-08-28 17:53:32,730 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 17:53:32,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:32,730 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-28 17:53:32,730 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 17:53:32,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:32,731 INFO L85 PathProgramCache]: Analyzing trace with hash 2078146836, now seen corresponding path program 1 times [2023-08-28 17:53:32,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:32,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297831986] [2023-08-28 17:53:32,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:32,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:53:32,749 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 17:53:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:53:32,763 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 17:53:32,764 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 17:53:32,764 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 17:53:32,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-28 17:53:32,764 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 17:53:32,766 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 17:53:32,766 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 17:53:32,766 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-28 17:53:32,792 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 17:53:32,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 137 transitions, 306 flow [2023-08-28 17:53:32,806 INFO L130 PetriNetUnfolder]: 9/183 cut-off events. [2023-08-28 17:53:32,807 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 17:53:32,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 183 events. 9/183 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 542 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2023-08-28 17:53:32,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 137 transitions, 306 flow [2023-08-28 17:53:32,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 137 transitions, 306 flow [2023-08-28 17:53:32,814 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:53:32,814 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 137 transitions, 306 flow [2023-08-28 17:53:32,815 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 137 transitions, 306 flow [2023-08-28 17:53:32,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 137 transitions, 306 flow [2023-08-28 17:53:32,832 INFO L130 PetriNetUnfolder]: 9/183 cut-off events. [2023-08-28 17:53:32,832 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 17:53:32,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 183 events. 9/183 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 542 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2023-08-28 17:53:32,839 INFO L119 LiptonReduction]: Number of co-enabled transitions 11880 [2023-08-28 17:53:34,189 INFO L134 LiptonReduction]: Checked pairs total: 66295 [2023-08-28 17:53:34,189 INFO L136 LiptonReduction]: Total number of compositions: 74 [2023-08-28 17:53:34,191 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 17:53:34,191 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;@f9f3ede, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:53:34,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-08-28 17:53:34,192 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 17:53:34,192 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:34,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:34,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 17:53:34,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-28 17:53:34,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:34,193 INFO L85 PathProgramCache]: Analyzing trace with hash 34905688, now seen corresponding path program 1 times [2023-08-28 17:53:34,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:34,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017652433] [2023-08-28 17:53:34,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:34,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:34,214 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 17:53:34,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:34,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017652433] [2023-08-28 17:53:34,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017652433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:34,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:34,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 17:53:34,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828145238] [2023-08-28 17:53:34,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:34,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 17:53:34,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:34,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 17:53:34,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 17:53:34,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 211 [2023-08-28 17:53:34,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 228 flow. Second operand has 2 states, 2 states have (on average 81.0) internal successors, (162), 2 states have internal predecessors, (162), 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 17:53:34,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:34,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 211 [2023-08-28 17:53:34,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:34,957 INFO L130 PetriNetUnfolder]: 5236/8898 cut-off events. [2023-08-28 17:53:34,957 INFO L131 PetriNetUnfolder]: For 1817/1817 co-relation queries the response was YES. [2023-08-28 17:53:34,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16764 conditions, 8898 events. 5236/8898 cut-off events. For 1817/1817 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 68911 event pairs, 4064 based on Foata normal form. 1172/8899 useless extension candidates. Maximal degree in co-relation 2744. Up to 6799 conditions per place. [2023-08-28 17:53:35,018 INFO L137 encePairwiseOnDemand]: 178/211 looper letters, 26 selfloop transitions, 0 changer transitions 0/65 dead transitions. [2023-08-28 17:53:35,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 65 transitions, 214 flow [2023-08-28 17:53:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 17:53:35,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 17:53:35,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 217 transitions. [2023-08-28 17:53:35,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.514218009478673 [2023-08-28 17:53:35,020 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 217 transitions. [2023-08-28 17:53:35,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 217 transitions. [2023-08-28 17:53:35,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:35,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 217 transitions. [2023-08-28 17:53:35,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 108.5) internal successors, (217), 2 states have internal predecessors, (217), 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 17:53:35,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 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 17:53:35,022 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 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 17:53:35,023 INFO L175 Difference]: Start difference. First operand has 103 places, 98 transitions, 228 flow. Second operand 2 states and 217 transitions. [2023-08-28 17:53:35,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 65 transitions, 214 flow [2023-08-28 17:53:35,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 65 transitions, 202 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-28 17:53:35,026 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 150 flow [2023-08-28 17:53:35,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, 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=150, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2023-08-28 17:53:35,029 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -32 predicate places. [2023-08-28 17:53:35,030 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 150 flow [2023-08-28 17:53:35,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 81.0) internal successors, (162), 2 states have internal predecessors, (162), 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 17:53:35,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:35,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-28 17:53:35,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-28 17:53:35,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-28 17:53:35,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:35,031 INFO L85 PathProgramCache]: Analyzing trace with hash -815339013, now seen corresponding path program 1 times [2023-08-28 17:53:35,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:35,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008517798] [2023-08-28 17:53:35,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:35,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:35,050 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 17:53:35,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:35,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008517798] [2023-08-28 17:53:35,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008517798] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:35,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:35,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:53:35,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883276362] [2023-08-28 17:53:35,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:35,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:53:35,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:35,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:53:35,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:53:35,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 211 [2023-08-28 17:53:35,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 17:53:35,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:35,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 211 [2023-08-28 17:53:35,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:45,832 INFO L130 PetriNetUnfolder]: 127880/182127 cut-off events. [2023-08-28 17:53:45,833 INFO L131 PetriNetUnfolder]: For 4775/4775 co-relation queries the response was YES. [2023-08-28 17:53:46,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 356056 conditions, 182127 events. 127880/182127 cut-off events. For 4775/4775 co-relation queries the response was YES. Maximal size of possible extension queue 7744. Compared 1489516 event pairs, 48209 based on Foata normal form. 0/167302 useless extension candidates. Maximal degree in co-relation 356049. Up to 113729 conditions per place. [2023-08-28 17:53:47,219 INFO L137 encePairwiseOnDemand]: 179/211 looper letters, 66 selfloop transitions, 24 changer transitions 0/105 dead transitions. [2023-08-28 17:53:47,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 105 transitions, 425 flow [2023-08-28 17:53:47,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:53:47,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:53:47,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2023-08-28 17:53:47,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154818325434439 [2023-08-28 17:53:47,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2023-08-28 17:53:47,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2023-08-28 17:53:47,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:47,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2023-08-28 17:53:47,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 17:53:47,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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 17:53:47,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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 17:53:47,224 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 150 flow. Second operand 3 states and 263 transitions. [2023-08-28 17:53:47,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 105 transitions, 425 flow [2023-08-28 17:53:47,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 105 transitions, 425 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-28 17:53:47,231 INFO L231 Difference]: Finished difference. Result has 75 places, 89 transitions, 358 flow [2023-08-28 17:53:47,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=75, PETRI_TRANSITIONS=89} [2023-08-28 17:53:47,231 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -28 predicate places. [2023-08-28 17:53:47,232 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 89 transitions, 358 flow [2023-08-28 17:53:47,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 17:53:47,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:47,232 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 17:53:47,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-28 17:53:47,232 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-28 17:53:47,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:47,233 INFO L85 PathProgramCache]: Analyzing trace with hash -117181894, now seen corresponding path program 1 times [2023-08-28 17:53:47,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:47,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085216850] [2023-08-28 17:53:47,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:47,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-28 17:53:47,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:47,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085216850] [2023-08-28 17:53:47,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085216850] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:47,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:47,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-28 17:53:47,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265885358] [2023-08-28 17:53:47,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:47,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:53:47,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:47,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:53:47,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:53:47,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 211 [2023-08-28 17:53:47,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 89 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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 17:53:47,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:47,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 211 [2023-08-28 17:53:47,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:47,793 INFO L130 PetriNetUnfolder]: 3338/6705 cut-off events. [2023-08-28 17:53:47,793 INFO L131 PetriNetUnfolder]: For 4162/4162 co-relation queries the response was YES. [2023-08-28 17:53:47,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16733 conditions, 6705 events. 3338/6705 cut-off events. For 4162/4162 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 48700 event pairs, 376 based on Foata normal form. 692/7073 useless extension candidates. Maximal degree in co-relation 16724. Up to 3514 conditions per place. [2023-08-28 17:53:47,812 INFO L137 encePairwiseOnDemand]: 199/211 looper letters, 0 selfloop transitions, 0 changer transitions 77/77 dead transitions. [2023-08-28 17:53:47,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 77 transitions, 385 flow [2023-08-28 17:53:47,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-28 17:53:47,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-28 17:53:47,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-08-28 17:53:47,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4296998420221169 [2023-08-28 17:53:47,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-08-28 17:53:47,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-08-28 17:53:47,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:47,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-08-28 17:53:47,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 17:53:47,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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 17:53:47,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 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 17:53:47,819 INFO L175 Difference]: Start difference. First operand has 75 places, 89 transitions, 358 flow. Second operand 3 states and 272 transitions. [2023-08-28 17:53:47,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 77 transitions, 385 flow [2023-08-28 17:53:47,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 77 transitions, 353 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-28 17:53:47,830 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2023-08-28 17:53:47,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=65, 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=3, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2023-08-28 17:53:47,831 INFO L281 CegarLoopForPetriNet]: 103 programPoint places, -36 predicate places. [2023-08-28 17:53:47,832 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2023-08-28 17:53:47,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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 17:53:47,832 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (49 of 50 remaining) [2023-08-28 17:53:47,832 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (48 of 50 remaining) [2023-08-28 17:53:47,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (47 of 50 remaining) [2023-08-28 17:53:47,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (46 of 50 remaining) [2023-08-28 17:53:47,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (45 of 50 remaining) [2023-08-28 17:53:47,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (44 of 50 remaining) [2023-08-28 17:53:47,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (43 of 50 remaining) [2023-08-28 17:53:47,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (42 of 50 remaining) [2023-08-28 17:53:47,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (41 of 50 remaining) [2023-08-28 17:53:47,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (40 of 50 remaining) [2023-08-28 17:53:47,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (39 of 50 remaining) [2023-08-28 17:53:47,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (38 of 50 remaining) [2023-08-28 17:53:47,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (37 of 50 remaining) [2023-08-28 17:53:47,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (36 of 50 remaining) [2023-08-28 17:53:47,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (35 of 50 remaining) [2023-08-28 17:53:47,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (34 of 50 remaining) [2023-08-28 17:53:47,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (33 of 50 remaining) [2023-08-28 17:53:47,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 50 remaining) [2023-08-28 17:53:47,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (31 of 50 remaining) [2023-08-28 17:53:47,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (30 of 50 remaining) [2023-08-28 17:53:47,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (29 of 50 remaining) [2023-08-28 17:53:47,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (28 of 50 remaining) [2023-08-28 17:53:47,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 50 remaining) [2023-08-28 17:53:47,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (26 of 50 remaining) [2023-08-28 17:53:47,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (25 of 50 remaining) [2023-08-28 17:53:47,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 50 remaining) [2023-08-28 17:53:47,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 50 remaining) [2023-08-28 17:53:47,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 50 remaining) [2023-08-28 17:53:47,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (21 of 50 remaining) [2023-08-28 17:53:47,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 50 remaining) [2023-08-28 17:53:47,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 50 remaining) [2023-08-28 17:53:47,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (18 of 50 remaining) [2023-08-28 17:53:47,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (17 of 50 remaining) [2023-08-28 17:53:47,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 50 remaining) [2023-08-28 17:53:47,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 50 remaining) [2023-08-28 17:53:47,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (14 of 50 remaining) [2023-08-28 17:53:47,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (13 of 50 remaining) [2023-08-28 17:53:47,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 50 remaining) [2023-08-28 17:53:47,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 50 remaining) [2023-08-28 17:53:47,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err9ASSERT_VIOLATIONDATA_RACE (10 of 50 remaining) [2023-08-28 17:53:47,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 50 remaining) [2023-08-28 17:53:47,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 50 remaining) [2023-08-28 17:53:47,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 50 remaining) [2023-08-28 17:53:47,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err8ASSERT_VIOLATIONDATA_RACE (6 of 50 remaining) [2023-08-28 17:53:47,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 50 remaining) [2023-08-28 17:53:47,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 50 remaining) [2023-08-28 17:53:47,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 50 remaining) [2023-08-28 17:53:47,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 50 remaining) [2023-08-28 17:53:47,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 50 remaining) [2023-08-28 17:53:47,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err7ASSERT_VIOLATIONDATA_RACE (0 of 50 remaining) [2023-08-28 17:53:47,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-28 17:53:47,840 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-28 17:53:47,841 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,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 17:53:47,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 137 transitions, 306 flow [2023-08-28 17:53:47,860 INFO L130 PetriNetUnfolder]: 9/183 cut-off events. [2023-08-28 17:53:47,860 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 17:53:47,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 183 events. 9/183 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 542 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2023-08-28 17:53:47,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 137 transitions, 306 flow [2023-08-28 17:53:47,862 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 137 transitions, 306 flow [2023-08-28 17:53:47,862 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:53:47,863 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 137 transitions, 306 flow [2023-08-28 17:53:47,863 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 137 transitions, 306 flow [2023-08-28 17:53:47,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 137 transitions, 306 flow [2023-08-28 17:53:47,881 INFO L130 PetriNetUnfolder]: 9/183 cut-off events. [2023-08-28 17:53:47,881 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 17:53:47,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 183 events. 9/183 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 542 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2023-08-28 17:53:47,968 INFO L119 LiptonReduction]: Number of co-enabled transitions 11880 [2023-08-28 17:53:49,310 INFO L134 LiptonReduction]: Checked pairs total: 77887 [2023-08-28 17:53:49,311 INFO L136 LiptonReduction]: Total number of compositions: 74 [2023-08-28 17:53:49,312 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 17:53:49,312 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;@f9f3ede, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:53:49,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 17:53:49,318 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2023-08-28 17:53:49,318 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 17:53:49,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:49,324 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-28 17:53:49,324 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 17:53:49,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:49,324 INFO L85 PathProgramCache]: Analyzing trace with hash 114509229, now seen corresponding path program 1 times [2023-08-28 17:53:49,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:49,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551606548] [2023-08-28 17:53:49,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:49,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:53:49,338 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 17:53:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 17:53:49,357 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 17:53:49,357 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 17:53:49,357 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 17:53:49,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-28 17:53:49,358 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 17:53:49,360 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 17:53:49,360 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 17:53:49,360 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-28 17:53:49,385 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 17:53:49,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 165 transitions, 375 flow [2023-08-28 17:53:49,405 INFO L130 PetriNetUnfolder]: 11/223 cut-off events. [2023-08-28 17:53:49,405 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 17:53:49,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 223 events. 11/223 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 697 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 196. Up to 12 conditions per place. [2023-08-28 17:53:49,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 165 transitions, 375 flow [2023-08-28 17:53:49,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 165 transitions, 375 flow [2023-08-28 17:53:49,410 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 17:53:49,410 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 165 transitions, 375 flow [2023-08-28 17:53:49,410 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 165 transitions, 375 flow [2023-08-28 17:53:49,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 165 transitions, 375 flow [2023-08-28 17:53:49,422 INFO L130 PetriNetUnfolder]: 11/223 cut-off events. [2023-08-28 17:53:49,422 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 17:53:49,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 223 events. 11/223 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 697 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 196. Up to 12 conditions per place. [2023-08-28 17:53:49,427 INFO L119 LiptonReduction]: Number of co-enabled transitions 18630 [2023-08-28 17:53:50,854 INFO L134 LiptonReduction]: Checked pairs total: 105991 [2023-08-28 17:53:50,854 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-08-28 17:53:50,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 17:53:50,856 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;@f9f3ede, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 17:53:50,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-08-28 17:53:50,857 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2023-08-28 17:53:50,857 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 17:53:50,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:50,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 17:53:50,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err9ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-28 17:53:50,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:50,858 INFO L85 PathProgramCache]: Analyzing trace with hash 45710538, now seen corresponding path program 1 times [2023-08-28 17:53:50,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:50,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83002951] [2023-08-28 17:53:50,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:50,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:50,866 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 17:53:50,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:50,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83002951] [2023-08-28 17:53:50,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83002951] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:50,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:50,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 17:53:50,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541764550] [2023-08-28 17:53:50,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:50,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 17:53:50,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:50,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 17:53:50,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 17:53:50,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 249 [2023-08-28 17:53:50,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 121 transitions, 287 flow. Second operand has 2 states, 2 states have (on average 95.0) internal successors, (190), 2 states have internal predecessors, (190), 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 17:53:50,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:50,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 249 [2023-08-28 17:53:50,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 17:53:54,433 INFO L130 PetriNetUnfolder]: 33986/52218 cut-off events. [2023-08-28 17:53:54,433 INFO L131 PetriNetUnfolder]: For 14312/14312 co-relation queries the response was YES. [2023-08-28 17:53:54,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100515 conditions, 52218 events. 33986/52218 cut-off events. For 14312/14312 co-relation queries the response was YES. Maximal size of possible extension queue 2480. Compared 441418 event pairs, 26564 based on Foata normal form. 7422/53793 useless extension candidates. Maximal degree in co-relation 16994. Up to 41799 conditions per place. [2023-08-28 17:53:54,708 INFO L137 encePairwiseOnDemand]: 208/249 looper letters, 32 selfloop transitions, 0 changer transitions 0/80 dead transitions. [2023-08-28 17:53:54,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 80 transitions, 269 flow [2023-08-28 17:53:54,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 17:53:54,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 17:53:54,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 259 transitions. [2023-08-28 17:53:54,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200803212851406 [2023-08-28 17:53:54,709 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 259 transitions. [2023-08-28 17:53:54,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 259 transitions. [2023-08-28 17:53:54,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 17:53:54,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 259 transitions. [2023-08-28 17:53:54,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 129.5) internal successors, (259), 2 states have internal predecessors, (259), 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 17:53:54,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 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 17:53:54,712 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 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 17:53:54,712 INFO L175 Difference]: Start difference. First operand has 127 places, 121 transitions, 287 flow. Second operand 2 states and 259 transitions. [2023-08-28 17:53:54,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 80 transitions, 269 flow [2023-08-28 17:53:54,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 80 transitions, 249 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-28 17:53:54,721 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 185 flow [2023-08-28 17:53:54,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=185, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2023-08-28 17:53:54,721 INFO L281 CegarLoopForPetriNet]: 127 programPoint places, -40 predicate places. [2023-08-28 17:53:54,722 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 185 flow [2023-08-28 17:53:54,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 95.0) internal successors, (190), 2 states have internal predecessors, (190), 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 17:53:54,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 17:53:54,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-28 17:53:54,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-28 17:53:54,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err9ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 56 more)] === [2023-08-28 17:53:54,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 17:53:54,723 INFO L85 PathProgramCache]: Analyzing trace with hash 978195436, now seen corresponding path program 1 times [2023-08-28 17:53:54,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 17:53:54,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152966579] [2023-08-28 17:53:54,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 17:53:54,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 17:53:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 17:53:54,745 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 17:53:54,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 17:53:54,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152966579] [2023-08-28 17:53:54,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152966579] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 17:53:54,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 17:53:54,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-28 17:53:54,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440022125] [2023-08-28 17:53:54,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 17:53:54,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-28 17:53:54,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 17:53:54,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-28 17:53:54,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-28 17:53:54,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 249 [2023-08-28 17:53:54,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 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 17:53:54,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 17:53:54,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 249 [2023-08-28 17:53:54,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand