./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 134e9604c8f91a200c8250c9fbb45867ed525dc78e65c16e0a5fa44f5d71ac67 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-28 18:07:14,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-28 18:07:14,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-28 18:07:14,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-28 18:07:14,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-28 18:07:14,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-28 18:07:14,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-28 18:07:14,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-28 18:07:14,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-28 18:07:14,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-28 18:07:14,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-28 18:07:14,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-28 18:07:14,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-28 18:07:14,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-28 18:07:14,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-28 18:07:14,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-28 18:07:14,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-28 18:07:14,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-28 18:07:14,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-28 18:07:14,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-28 18:07:14,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-28 18:07:14,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-28 18:07:14,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-28 18:07:14,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-28 18:07:14,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-28 18:07:14,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-28 18:07:14,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-28 18:07:14,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-28 18:07:14,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-28 18:07:14,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-28 18:07:14,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-28 18:07:14,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-28 18:07:14,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-28 18:07:14,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-28 18:07:14,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-28 18:07:14,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-28 18:07:14,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-28 18:07:14,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-28 18:07:14,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-28 18:07:14,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-28 18:07:14,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-28 18:07:14,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-28 18:07:14,711 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-28 18:07:14,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-28 18:07:14,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-28 18:07:14,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-28 18:07:14,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-28 18:07:14,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-28 18:07:14,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-28 18:07:14,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-28 18:07:14,715 INFO L138 SettingsManager]: * Use SBE=true [2023-08-28 18:07:14,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-28 18:07:14,716 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-28 18:07:14,716 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-28 18:07:14,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-28 18:07:14,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-28 18:07:14,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-28 18:07:14,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-28 18:07:14,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-28 18:07:14,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-28 18:07:14,718 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-28 18:07:14,718 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-28 18:07:14,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-28 18:07:14,718 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-28 18:07:14,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-28 18:07:14,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-28 18:07:14,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-28 18:07:14,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-28 18:07:14,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 18:07:14,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-28 18:07:14,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-28 18:07:14,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-28 18:07:14,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-28 18:07:14,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-28 18:07:14,721 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-28 18:07:14,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-28 18:07:14,721 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-28 18:07:14,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-28 18:07:14,722 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-28 18:07:14,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 134e9604c8f91a200c8250c9fbb45867ed525dc78e65c16e0a5fa44f5d71ac67 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-28 18:07:15,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-28 18:07:15,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-28 18:07:15,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-28 18:07:15,091 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-28 18:07:15,092 INFO L275 PluginConnector]: CDTParser initialized [2023-08-28 18:07:15,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2023-08-28 18:07:16,272 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-28 18:07:16,560 INFO L351 CDTParser]: Found 1 translation units. [2023-08-28 18:07:16,561 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2023-08-28 18:07:16,575 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d3c7e3a8/6ff8dec84e774640bc0e27c616acd248/FLAG9329066dc [2023-08-28 18:07:16,587 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d3c7e3a8/6ff8dec84e774640bc0e27c616acd248 [2023-08-28 18:07:16,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-28 18:07:16,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-28 18:07:16,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-28 18:07:16,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-28 18:07:16,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-28 18:07:16,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 06:07:16" (1/1) ... [2023-08-28 18:07:16,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf0248e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:07:16, skipping insertion in model container [2023-08-28 18:07:16,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 06:07:16" (1/1) ... [2023-08-28 18:07:16,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-28 18:07:16,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-28 18:07:16,785 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-28 18:07:16,935 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/46_monabsex2_vs.i[30494,30507] [2023-08-28 18:07:16,943 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 18:07:16,953 INFO L203 MainTranslator]: Completed pre-run [2023-08-28 18:07:16,977 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-28 18:07:16,995 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/46_monabsex2_vs.i[30494,30507] [2023-08-28 18:07:17,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-28 18:07:17,034 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-28 18:07:17,034 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-28 18:07:17,034 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-28 18:07:17,040 INFO L208 MainTranslator]: Completed translation [2023-08-28 18:07:17,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:07:17 WrapperNode [2023-08-28 18:07:17,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-28 18:07:17,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-28 18:07:17,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-28 18:07:17,043 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-28 18:07:17,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:07:17" (1/1) ... [2023-08-28 18:07:17,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:07:17" (1/1) ... [2023-08-28 18:07:17,132 INFO L138 Inliner]: procedures = 170, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2023-08-28 18:07:17,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-28 18:07:17,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-28 18:07:17,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-28 18:07:17,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-28 18:07:17,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:07:17" (1/1) ... [2023-08-28 18:07:17,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:07:17" (1/1) ... [2023-08-28 18:07:17,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:07:17" (1/1) ... [2023-08-28 18:07:17,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:07:17" (1/1) ... [2023-08-28 18:07:17,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:07:17" (1/1) ... [2023-08-28 18:07:17,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:07:17" (1/1) ... [2023-08-28 18:07:17,198 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:07:17" (1/1) ... [2023-08-28 18:07:17,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:07:17" (1/1) ... [2023-08-28 18:07:17,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-28 18:07:17,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-28 18:07:17,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-28 18:07:17,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-28 18:07:17,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:07:17" (1/1) ... [2023-08-28 18:07:17,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-28 18:07:17,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-28 18:07:17,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-28 18:07:17,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-28 18:07:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-28 18:07:17,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-28 18:07:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-28 18:07:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-28 18:07:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-28 18:07:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-28 18:07:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-28 18:07:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-28 18:07:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-28 18:07:17,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-28 18:07:17,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-28 18:07:17,276 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-28 18:07:17,463 INFO L236 CfgBuilder]: Building ICFG [2023-08-28 18:07:17,469 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-28 18:07:17,568 INFO L277 CfgBuilder]: Performing block encoding [2023-08-28 18:07:17,612 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-28 18:07:17,612 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-28 18:07:17,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:07:17 BoogieIcfgContainer [2023-08-28 18:07:17,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-28 18:07:17,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-28 18:07:17,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-28 18:07:17,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-28 18:07:17,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 06:07:16" (1/3) ... [2023-08-28 18:07:17,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39011d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 06:07:17, skipping insertion in model container [2023-08-28 18:07:17,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:07:17" (2/3) ... [2023-08-28 18:07:17,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39011d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 06:07:17, skipping insertion in model container [2023-08-28 18:07:17,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:07:17" (3/3) ... [2023-08-28 18:07:17,622 INFO L112 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2023-08-28 18:07:17,630 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-28 18:07:17,639 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-28 18:07:17,640 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-28 18:07:17,640 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-28 18:07:17,670 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:07:17,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 79 flow [2023-08-28 18:07:17,723 INFO L130 PetriNetUnfolder]: 2/47 cut-off events. [2023-08-28 18:07:17,724 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:07:17,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 47 events. 2/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 23. Up to 4 conditions per place. [2023-08-28 18:07:17,728 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 37 transitions, 79 flow [2023-08-28 18:07:17,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 37 transitions, 79 flow [2023-08-28 18:07:17,734 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:07:17,743 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 37 transitions, 79 flow [2023-08-28 18:07:17,745 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 37 transitions, 79 flow [2023-08-28 18:07:17,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 79 flow [2023-08-28 18:07:17,757 INFO L130 PetriNetUnfolder]: 2/47 cut-off events. [2023-08-28 18:07:17,757 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:07:17,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 47 events. 2/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 23. Up to 4 conditions per place. [2023-08-28 18:07:17,759 INFO L119 LiptonReduction]: Number of co-enabled transitions 286 [2023-08-28 18:07:19,054 INFO L134 LiptonReduction]: Checked pairs total: 285 [2023-08-28 18:07:19,054 INFO L136 LiptonReduction]: Total number of compositions: 33 [2023-08-28 18:07:19,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:07:19,085 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;@53d02658, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:07:19,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-28 18:07:19,088 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:07:19,089 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:07:19,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:07:19,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:07:19,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-28 18:07:19,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:07:19,095 INFO L85 PathProgramCache]: Analyzing trace with hash 6764707, now seen corresponding path program 1 times [2023-08-28 18:07:19,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:07:19,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306529170] [2023-08-28 18:07:19,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:07:19,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:07:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:07:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:07:19,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:07:19,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306529170] [2023-08-28 18:07:19,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306529170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:07:19,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:07:19,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:07:19,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168722741] [2023-08-28 18:07:19,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:07:19,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:07:19,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:07:19,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:07:19,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:07:19,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 70 [2023-08-28 18:07:19,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 12 transitions, 29 flow. Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:19,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:07:19,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 70 [2023-08-28 18:07:19,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:07:19,361 INFO L130 PetriNetUnfolder]: 2/11 cut-off events. [2023-08-28 18:07:19,361 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:07:19,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 11 events. 2/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 2 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 14. Up to 11 conditions per place. [2023-08-28 18:07:19,362 INFO L137 encePairwiseOnDemand]: 64/70 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2023-08-28 18:07:19,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 27 flow [2023-08-28 18:07:19,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:07:19,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:07:19,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 63 transitions. [2023-08-28 18:07:19,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-08-28 18:07:19,376 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 63 transitions. [2023-08-28 18:07:19,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 63 transitions. [2023-08-28 18:07:19,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:07:19,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 63 transitions. [2023-08-28 18:07:19,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:19,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:19,388 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:19,390 INFO L175 Difference]: Start difference. First operand has 15 places, 12 transitions, 29 flow. Second operand 2 states and 63 transitions. [2023-08-28 18:07:19,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 27 flow [2023-08-28 18:07:19,398 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 18:07:19,398 INFO L231 Difference]: Finished difference. Result has 10 places, 0 transitions, 0 flow [2023-08-28 18:07:19,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, 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 18:07:19,404 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, -5 predicate places. [2023-08-28 18:07:19,404 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 0 transitions, 0 flow [2023-08-28 18:07:19,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:19,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 10 remaining) [2023-08-28 18:07:19,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-08-28 18:07:19,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2023-08-28 18:07:19,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2023-08-28 18:07:19,424 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2023-08-28 18:07:19,425 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-08-28 18:07:19,425 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-08-28 18:07:19,425 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-08-28 18:07:19,425 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-08-28 18:07:19,426 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-08-28 18:07:19,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-28 18:07:19,426 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:07:19,429 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:07:19,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 79 flow [2023-08-28 18:07:19,454 INFO L130 PetriNetUnfolder]: 2/47 cut-off events. [2023-08-28 18:07:19,455 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:07:19,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 47 events. 2/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 23. Up to 4 conditions per place. [2023-08-28 18:07:19,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 37 transitions, 79 flow [2023-08-28 18:07:19,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 31 transitions, 67 flow [2023-08-28 18:07:19,459 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:07:19,460 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 31 transitions, 67 flow [2023-08-28 18:07:19,460 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 31 transitions, 67 flow [2023-08-28 18:07:19,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 31 transitions, 67 flow [2023-08-28 18:07:19,469 INFO L130 PetriNetUnfolder]: 0/35 cut-off events. [2023-08-28 18:07:19,469 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:07:19,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 35 events. 0/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-28 18:07:19,470 INFO L119 LiptonReduction]: Number of co-enabled transitions 154 [2023-08-28 18:07:20,704 INFO L134 LiptonReduction]: Checked pairs total: 154 [2023-08-28 18:07:20,704 INFO L136 LiptonReduction]: Total number of compositions: 31 [2023-08-28 18:07:20,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:07:20,706 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;@53d02658, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:07:20,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:07:20,708 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2023-08-28 18:07:20,709 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:07:20,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:07:20,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:07:20,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:07:20,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:07:20,710 INFO L85 PathProgramCache]: Analyzing trace with hash 7665185, now seen corresponding path program 1 times [2023-08-28 18:07:20,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:07:20,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599544498] [2023-08-28 18:07:20,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:07:20,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:07:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:07:20,740 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:07:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:07:20,769 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:07:20,770 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:07:20,770 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:07:20,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-28 18:07:20,770 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:07:20,771 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:07:20,772 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:07:20,772 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-28 18:07:20,783 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:07:20,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 49 transitions, 110 flow [2023-08-28 18:07:20,794 INFO L130 PetriNetUnfolder]: 3/71 cut-off events. [2023-08-28 18:07:20,794 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:07:20,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 3/71 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 119 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 48. Up to 6 conditions per place. [2023-08-28 18:07:20,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 49 transitions, 110 flow [2023-08-28 18:07:20,796 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 49 transitions, 110 flow [2023-08-28 18:07:20,796 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:07:20,796 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 49 transitions, 110 flow [2023-08-28 18:07:20,797 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 49 transitions, 110 flow [2023-08-28 18:07:20,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 49 transitions, 110 flow [2023-08-28 18:07:20,805 INFO L130 PetriNetUnfolder]: 3/71 cut-off events. [2023-08-28 18:07:20,805 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:07:20,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 3/71 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 119 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 48. Up to 6 conditions per place. [2023-08-28 18:07:20,806 INFO L119 LiptonReduction]: Number of co-enabled transitions 836 [2023-08-28 18:07:21,718 INFO L134 LiptonReduction]: Checked pairs total: 2534 [2023-08-28 18:07:21,718 INFO L136 LiptonReduction]: Total number of compositions: 30 [2023-08-28 18:07:21,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:07:21,721 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;@53d02658, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:07:21,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-28 18:07:21,733 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:07:21,734 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:07:21,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:07:21,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:07:21,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-08-28 18:07:21,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:07:21,735 INFO L85 PathProgramCache]: Analyzing trace with hash 10522344, now seen corresponding path program 1 times [2023-08-28 18:07:21,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:07:21,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162518301] [2023-08-28 18:07:21,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:07:21,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:07:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:07:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:07:21,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:07:21,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162518301] [2023-08-28 18:07:21,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162518301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:07:21,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:07:21,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:07:21,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316953405] [2023-08-28 18:07:21,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:07:21,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:07:21,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:07:21,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:07:21,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:07:21,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 79 [2023-08-28 18:07:21,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:21,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:07:21,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 79 [2023-08-28 18:07:21,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:07:21,816 INFO L130 PetriNetUnfolder]: 39/95 cut-off events. [2023-08-28 18:07:21,816 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-28 18:07:21,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 95 events. 39/95 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 325 event pairs, 39 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 38. Up to 82 conditions per place. [2023-08-28 18:07:21,817 INFO L137 encePairwiseOnDemand]: 68/79 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2023-08-28 18:07:21,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 13 transitions, 58 flow [2023-08-28 18:07:21,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:07:21,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:07:21,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 79 transitions. [2023-08-28 18:07:21,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-28 18:07:21,820 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 79 transitions. [2023-08-28 18:07:21,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 79 transitions. [2023-08-28 18:07:21,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:07:21,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 79 transitions. [2023-08-28 18:07:21,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:21,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:21,822 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:21,823 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 2 states and 79 transitions. [2023-08-28 18:07:21,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 13 transitions, 58 flow [2023-08-28 18:07:21,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 13 transitions, 56 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-28 18:07:21,824 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-28 18:07:21,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-28 18:07:21,825 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -10 predicate places. [2023-08-28 18:07:21,825 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-28 18:07:21,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:21,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 15 remaining) [2023-08-28 18:07:21,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-08-28 18:07:21,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-08-28 18:07:21,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-08-28 18:07:21,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-08-28 18:07:21,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2023-08-28 18:07:21,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-08-28 18:07:21,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-08-28 18:07:21,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-08-28 18:07:21,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2023-08-28 18:07:21,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2023-08-28 18:07:21,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-08-28 18:07:21,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-08-28 18:07:21,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-08-28 18:07:21,828 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-08-28 18:07:21,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-28 18:07:21,829 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:07:21,830 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:07:21,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 49 transitions, 110 flow [2023-08-28 18:07:21,837 INFO L130 PetriNetUnfolder]: 3/71 cut-off events. [2023-08-28 18:07:21,838 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:07:21,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 3/71 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 119 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 48. Up to 6 conditions per place. [2023-08-28 18:07:21,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 49 transitions, 110 flow [2023-08-28 18:07:21,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 43 transitions, 98 flow [2023-08-28 18:07:21,839 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:07:21,839 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 43 transitions, 98 flow [2023-08-28 18:07:21,840 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 43 transitions, 98 flow [2023-08-28 18:07:21,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 43 transitions, 98 flow [2023-08-28 18:07:21,844 INFO L130 PetriNetUnfolder]: 0/53 cut-off events. [2023-08-28 18:07:21,845 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:07:21,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 53 events. 0/53 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-08-28 18:07:21,845 INFO L119 LiptonReduction]: Number of co-enabled transitions 572 [2023-08-28 18:07:22,886 INFO L134 LiptonReduction]: Checked pairs total: 1948 [2023-08-28 18:07:22,886 INFO L136 LiptonReduction]: Total number of compositions: 28 [2023-08-28 18:07:22,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:07:22,889 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;@53d02658, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:07:22,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:07:22,892 INFO L130 PetriNetUnfolder]: 0/21 cut-off events. [2023-08-28 18:07:22,892 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-28 18:07:22,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:07:22,893 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-08-28 18:07:22,893 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:07:22,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:07:22,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1648353412, now seen corresponding path program 1 times [2023-08-28 18:07:22,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:07:22,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488275774] [2023-08-28 18:07:22,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:07:22,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:07:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:07:22,917 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:07:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:07:22,933 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:07:22,933 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:07:22,933 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:07:22,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-28 18:07:22,934 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:07:22,935 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:07:22,935 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:07:22,935 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-28 18:07:22,954 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:07:22,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 61 transitions, 143 flow [2023-08-28 18:07:22,964 INFO L130 PetriNetUnfolder]: 4/95 cut-off events. [2023-08-28 18:07:22,964 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 18:07:22,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 95 events. 4/95 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 165 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 75. Up to 8 conditions per place. [2023-08-28 18:07:22,965 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 61 transitions, 143 flow [2023-08-28 18:07:22,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 61 transitions, 143 flow [2023-08-28 18:07:22,966 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:07:22,966 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 61 transitions, 143 flow [2023-08-28 18:07:22,966 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 61 transitions, 143 flow [2023-08-28 18:07:22,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 61 transitions, 143 flow [2023-08-28 18:07:22,975 INFO L130 PetriNetUnfolder]: 4/95 cut-off events. [2023-08-28 18:07:22,975 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 18:07:22,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 95 events. 4/95 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 165 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 75. Up to 8 conditions per place. [2023-08-28 18:07:22,978 INFO L119 LiptonReduction]: Number of co-enabled transitions 1650 [2023-08-28 18:07:24,073 INFO L134 LiptonReduction]: Checked pairs total: 5822 [2023-08-28 18:07:24,074 INFO L136 LiptonReduction]: Total number of compositions: 35 [2023-08-28 18:07:24,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:07:24,076 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;@53d02658, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:07:24,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-28 18:07:24,078 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:07:24,078 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:07:24,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:07:24,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:07:24,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2023-08-28 18:07:24,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:07:24,079 INFO L85 PathProgramCache]: Analyzing trace with hash 14707826, now seen corresponding path program 1 times [2023-08-28 18:07:24,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:07:24,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766335148] [2023-08-28 18:07:24,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:07:24,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:07:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:07:24,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:07:24,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:07:24,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766335148] [2023-08-28 18:07:24,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766335148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:07:24,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:07:24,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:07:24,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887798330] [2023-08-28 18:07:24,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:07:24,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:07:24,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:07:24,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:07:24,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:07:24,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 96 [2023-08-28 18:07:24,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 87 flow. Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:24,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:07:24,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 96 [2023-08-28 18:07:24,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:07:24,193 INFO L130 PetriNetUnfolder]: 279/507 cut-off events. [2023-08-28 18:07:24,193 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2023-08-28 18:07:24,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1087 conditions, 507 events. 279/507 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2324 event pairs, 279 based on Foata normal form. 0/485 useless extension candidates. Maximal degree in co-relation 207. Up to 450 conditions per place. [2023-08-28 18:07:24,196 INFO L137 encePairwiseOnDemand]: 80/96 looper letters, 0 selfloop transitions, 0 changer transitions 17/17 dead transitions. [2023-08-28 18:07:24,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 17 transitions, 83 flow [2023-08-28 18:07:24,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:07:24,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:07:24,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 94 transitions. [2023-08-28 18:07:24,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2023-08-28 18:07:24,198 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 94 transitions. [2023-08-28 18:07:24,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 94 transitions. [2023-08-28 18:07:24,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:07:24,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 94 transitions. [2023-08-28 18:07:24,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:24,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:24,200 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:24,201 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 87 flow. Second operand 2 states and 94 transitions. [2023-08-28 18:07:24,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 17 transitions, 83 flow [2023-08-28 18:07:24,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 77 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-28 18:07:24,202 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2023-08-28 18:07:24,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2023-08-28 18:07:24,203 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -15 predicate places. [2023-08-28 18:07:24,203 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2023-08-28 18:07:24,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:24,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (19 of 20 remaining) [2023-08-28 18:07:24,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-08-28 18:07:24,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-08-28 18:07:24,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2023-08-28 18:07:24,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-08-28 18:07:24,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2023-08-28 18:07:24,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-08-28 18:07:24,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-08-28 18:07:24,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2023-08-28 18:07:24,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2023-08-28 18:07:24,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2023-08-28 18:07:24,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2023-08-28 18:07:24,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2023-08-28 18:07:24,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-08-28 18:07:24,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-08-28 18:07:24,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2023-08-28 18:07:24,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2023-08-28 18:07:24,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2023-08-28 18:07:24,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-08-28 18:07:24,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2023-08-28 18:07:24,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-28 18:07:24,207 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:07:24,208 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 18:07:24,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 61 transitions, 143 flow [2023-08-28 18:07:24,218 INFO L130 PetriNetUnfolder]: 4/95 cut-off events. [2023-08-28 18:07:24,218 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 18:07:24,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 95 events. 4/95 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 165 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 75. Up to 8 conditions per place. [2023-08-28 18:07:24,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 61 transitions, 143 flow [2023-08-28 18:07:24,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 55 transitions, 131 flow [2023-08-28 18:07:24,220 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:07:24,220 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 55 transitions, 131 flow [2023-08-28 18:07:24,220 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 55 transitions, 131 flow [2023-08-28 18:07:24,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 55 transitions, 131 flow [2023-08-28 18:07:24,226 INFO L130 PetriNetUnfolder]: 0/71 cut-off events. [2023-08-28 18:07:24,226 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 18:07:24,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 71 events. 0/71 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2023-08-28 18:07:24,228 INFO L119 LiptonReduction]: Number of co-enabled transitions 1254 [2023-08-28 18:07:25,429 INFO L134 LiptonReduction]: Checked pairs total: 4862 [2023-08-28 18:07:25,430 INFO L136 LiptonReduction]: Total number of compositions: 33 [2023-08-28 18:07:25,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:07:25,433 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;@53d02658, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:07:25,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:07:25,436 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2023-08-28 18:07:25,437 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-28 18:07:25,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:07:25,437 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-08-28 18:07:25,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:07:25,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:07:25,438 INFO L85 PathProgramCache]: Analyzing trace with hash -510133609, now seen corresponding path program 1 times [2023-08-28 18:07:25,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:07:25,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940491258] [2023-08-28 18:07:25,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:07:25,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:07:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:07:25,476 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:07:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:07:25,506 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:07:25,509 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:07:25,509 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:07:25,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-28 18:07:25,510 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:07:25,510 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:07:25,513 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:07:25,513 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-28 18:07:25,535 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:07:25,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 178 flow [2023-08-28 18:07:25,558 INFO L130 PetriNetUnfolder]: 5/119 cut-off events. [2023-08-28 18:07:25,559 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 18:07:25,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 119 events. 5/119 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 218 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 103. Up to 10 conditions per place. [2023-08-28 18:07:25,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 178 flow [2023-08-28 18:07:25,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 73 transitions, 178 flow [2023-08-28 18:07:25,562 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:07:25,562 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 73 transitions, 178 flow [2023-08-28 18:07:25,563 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 73 transitions, 178 flow [2023-08-28 18:07:25,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 178 flow [2023-08-28 18:07:25,573 INFO L130 PetriNetUnfolder]: 5/119 cut-off events. [2023-08-28 18:07:25,573 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 18:07:25,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 119 events. 5/119 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 218 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 103. Up to 10 conditions per place. [2023-08-28 18:07:25,576 INFO L119 LiptonReduction]: Number of co-enabled transitions 2728 [2023-08-28 18:07:26,907 INFO L134 LiptonReduction]: Checked pairs total: 10105 [2023-08-28 18:07:26,907 INFO L136 LiptonReduction]: Total number of compositions: 40 [2023-08-28 18:07:26,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:07:26,909 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;@53d02658, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:07:26,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-28 18:07:26,910 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:07:26,910 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:07:26,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:07:26,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:07:26,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-28 18:07:26,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:07:26,911 INFO L85 PathProgramCache]: Analyzing trace with hash 19572470, now seen corresponding path program 1 times [2023-08-28 18:07:26,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:07:26,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883095802] [2023-08-28 18:07:26,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:07:26,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:07:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:07:26,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:07:26,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:07:26,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883095802] [2023-08-28 18:07:26,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883095802] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:07:26,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:07:26,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:07:26,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232903296] [2023-08-28 18:07:26,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:07:26,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:07:26,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:07:26,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:07:26,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:07:26,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 113 [2023-08-28 18:07:26,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 116 flow. Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:26,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:07:26,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 113 [2023-08-28 18:07:26,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:07:27,215 INFO L130 PetriNetUnfolder]: 1623/2539 cut-off events. [2023-08-28 18:07:27,216 INFO L131 PetriNetUnfolder]: For 1054/1054 co-relation queries the response was YES. [2023-08-28 18:07:27,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5504 conditions, 2539 events. 1623/2539 cut-off events. For 1054/1054 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 13349 event pairs, 1623 based on Foata normal form. 0/2453 useless extension candidates. Maximal degree in co-relation 1119. Up to 2306 conditions per place. [2023-08-28 18:07:27,226 INFO L137 encePairwiseOnDemand]: 92/113 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2023-08-28 18:07:27,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 21 transitions, 110 flow [2023-08-28 18:07:27,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:07:27,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:07:27,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 109 transitions. [2023-08-28 18:07:27,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823008849557522 [2023-08-28 18:07:27,228 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 109 transitions. [2023-08-28 18:07:27,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 109 transitions. [2023-08-28 18:07:27,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:07:27,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 109 transitions. [2023-08-28 18:07:27,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 54.5) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:27,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:27,231 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:27,231 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 116 flow. Second operand 2 states and 109 transitions. [2023-08-28 18:07:27,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 21 transitions, 110 flow [2023-08-28 18:07:27,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 21 transitions, 98 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-28 18:07:27,235 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-08-28 18:07:27,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-08-28 18:07:27,235 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -20 predicate places. [2023-08-28 18:07:27,236 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-08-28 18:07:27,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:27,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 25 remaining) [2023-08-28 18:07:27,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-08-28 18:07:27,236 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-08-28 18:07:27,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-08-28 18:07:27,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-08-28 18:07:27,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-08-28 18:07:27,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-08-28 18:07:27,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-08-28 18:07:27,237 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-08-28 18:07:27,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-08-28 18:07:27,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-08-28 18:07:27,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-08-28 18:07:27,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-08-28 18:07:27,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-08-28 18:07:27,238 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-08-28 18:07:27,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-08-28 18:07:27,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2023-08-28 18:07:27,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-08-28 18:07:27,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-08-28 18:07:27,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-08-28 18:07:27,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-08-28 18:07:27,239 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-08-28 18:07:27,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-08-28 18:07:27,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-08-28 18:07:27,240 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-08-28 18:07:27,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-28 18:07:27,240 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:07:27,241 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 (1/2) [2023-08-28 18:07:27,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 178 flow [2023-08-28 18:07:27,251 INFO L130 PetriNetUnfolder]: 5/119 cut-off events. [2023-08-28 18:07:27,252 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 18:07:27,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 119 events. 5/119 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 218 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 103. Up to 10 conditions per place. [2023-08-28 18:07:27,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 178 flow [2023-08-28 18:07:27,253 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 166 flow [2023-08-28 18:07:27,254 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:07:27,254 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 67 transitions, 166 flow [2023-08-28 18:07:27,254 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 67 transitions, 166 flow [2023-08-28 18:07:27,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 67 transitions, 166 flow [2023-08-28 18:07:27,260 INFO L130 PetriNetUnfolder]: 0/89 cut-off events. [2023-08-28 18:07:27,261 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 18:07:27,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 89 events. 0/89 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-08-28 18:07:27,263 INFO L119 LiptonReduction]: Number of co-enabled transitions 2200 [2023-08-28 18:07:28,850 INFO L134 LiptonReduction]: Checked pairs total: 9919 [2023-08-28 18:07:28,850 INFO L136 LiptonReduction]: Total number of compositions: 38 [2023-08-28 18:07:28,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:07:28,852 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;@53d02658, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:07:28,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:07:28,856 INFO L130 PetriNetUnfolder]: 0/43 cut-off events. [2023-08-28 18:07:28,856 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-28 18:07:28,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:07:28,857 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2023-08-28 18:07:28,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:07:28,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:07:28,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1182900333, now seen corresponding path program 1 times [2023-08-28 18:07:28,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:07:28,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615546952] [2023-08-28 18:07:28,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:07:28,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:07:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:07:28,899 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:07:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:07:28,942 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:07:28,946 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:07:28,947 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:07:28,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-28 18:07:28,947 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:07:28,948 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:07:28,948 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:07:28,948 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-28 18:07:28,976 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:07:28,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 85 transitions, 215 flow [2023-08-28 18:07:28,988 INFO L130 PetriNetUnfolder]: 6/143 cut-off events. [2023-08-28 18:07:28,988 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 18:07:28,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 143 events. 6/143 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 270 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 132. Up to 12 conditions per place. [2023-08-28 18:07:28,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 85 transitions, 215 flow [2023-08-28 18:07:28,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 85 transitions, 215 flow [2023-08-28 18:07:28,991 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:07:28,991 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 85 transitions, 215 flow [2023-08-28 18:07:28,991 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 85 transitions, 215 flow [2023-08-28 18:07:28,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 85 transitions, 215 flow [2023-08-28 18:07:29,002 INFO L130 PetriNetUnfolder]: 6/143 cut-off events. [2023-08-28 18:07:29,003 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 18:07:29,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 143 events. 6/143 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 270 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 132. Up to 12 conditions per place. [2023-08-28 18:07:29,006 INFO L119 LiptonReduction]: Number of co-enabled transitions 4070 [2023-08-28 18:07:30,492 INFO L134 LiptonReduction]: Checked pairs total: 16147 [2023-08-28 18:07:30,492 INFO L136 LiptonReduction]: Total number of compositions: 45 [2023-08-28 18:07:30,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:07:30,494 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;@53d02658, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:07:30,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-28 18:07:30,495 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:07:30,495 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:07:30,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:07:30,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:07:30,496 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-28 18:07:30,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:07:30,496 INFO L85 PathProgramCache]: Analyzing trace with hash 25113392, now seen corresponding path program 1 times [2023-08-28 18:07:30,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:07:30,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392537293] [2023-08-28 18:07:30,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:07:30,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:07:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:07:30,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:07:30,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:07:30,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392537293] [2023-08-28 18:07:30,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392537293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:07:30,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:07:30,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:07:30,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204060342] [2023-08-28 18:07:30,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:07:30,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:07:30,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:07:30,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:07:30,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:07:30,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 130 [2023-08-28 18:07:30,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 147 flow. Second operand has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:30,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:07:30,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 130 [2023-08-28 18:07:30,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:07:31,683 INFO L130 PetriNetUnfolder]: 8535/12203 cut-off events. [2023-08-28 18:07:31,683 INFO L131 PetriNetUnfolder]: For 6750/6750 co-relation queries the response was YES. [2023-08-28 18:07:31,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26689 conditions, 12203 events. 8535/12203 cut-off events. For 6750/6750 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 69427 event pairs, 8535 based on Foata normal form. 0/11861 useless extension candidates. Maximal degree in co-relation 5647. Up to 11266 conditions per place. [2023-08-28 18:07:31,735 INFO L137 encePairwiseOnDemand]: 104/130 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2023-08-28 18:07:31,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 25 transitions, 139 flow [2023-08-28 18:07:31,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:07:31,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:07:31,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 124 transitions. [2023-08-28 18:07:31,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2023-08-28 18:07:31,739 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 124 transitions. [2023-08-28 18:07:31,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 124 transitions. [2023-08-28 18:07:31,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:07:31,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 124 transitions. [2023-08-28 18:07:31,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 62.0) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:31,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:31,743 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:31,743 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 147 flow. Second operand 2 states and 124 transitions. [2023-08-28 18:07:31,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 25 transitions, 139 flow [2023-08-28 18:07:31,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 25 transitions, 119 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-28 18:07:31,752 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-28 18:07:31,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-08-28 18:07:31,754 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -25 predicate places. [2023-08-28 18:07:31,754 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-28 18:07:31,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:31,755 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (29 of 30 remaining) [2023-08-28 18:07:31,755 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (28 of 30 remaining) [2023-08-28 18:07:31,755 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 30 remaining) [2023-08-28 18:07:31,755 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (26 of 30 remaining) [2023-08-28 18:07:31,755 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 30 remaining) [2023-08-28 18:07:31,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 30 remaining) [2023-08-28 18:07:31,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 30 remaining) [2023-08-28 18:07:31,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 30 remaining) [2023-08-28 18:07:31,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 30 remaining) [2023-08-28 18:07:31,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 30 remaining) [2023-08-28 18:07:31,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 30 remaining) [2023-08-28 18:07:31,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 30 remaining) [2023-08-28 18:07:31,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 30 remaining) [2023-08-28 18:07:31,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 30 remaining) [2023-08-28 18:07:31,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (15 of 30 remaining) [2023-08-28 18:07:31,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 30 remaining) [2023-08-28 18:07:31,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 30 remaining) [2023-08-28 18:07:31,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 30 remaining) [2023-08-28 18:07:31,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 30 remaining) [2023-08-28 18:07:31,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 30 remaining) [2023-08-28 18:07:31,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 30 remaining) [2023-08-28 18:07:31,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 30 remaining) [2023-08-28 18:07:31,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 30 remaining) [2023-08-28 18:07:31,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 30 remaining) [2023-08-28 18:07:31,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 30 remaining) [2023-08-28 18:07:31,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 30 remaining) [2023-08-28 18:07:31,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 30 remaining) [2023-08-28 18:07:31,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 30 remaining) [2023-08-28 18:07:31,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 30 remaining) [2023-08-28 18:07:31,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 30 remaining) [2023-08-28 18:07:31,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-28 18:07:31,760 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:07:31,762 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 18:07:31,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 85 transitions, 215 flow [2023-08-28 18:07:31,778 INFO L130 PetriNetUnfolder]: 6/143 cut-off events. [2023-08-28 18:07:31,778 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 18:07:31,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 143 events. 6/143 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 270 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 132. Up to 12 conditions per place. [2023-08-28 18:07:31,779 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 85 transitions, 215 flow [2023-08-28 18:07:31,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 79 transitions, 203 flow [2023-08-28 18:07:31,780 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:07:31,780 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 79 transitions, 203 flow [2023-08-28 18:07:31,780 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 79 transitions, 203 flow [2023-08-28 18:07:31,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 79 transitions, 203 flow [2023-08-28 18:07:31,794 INFO L130 PetriNetUnfolder]: 0/107 cut-off events. [2023-08-28 18:07:31,794 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 18:07:31,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 107 events. 0/107 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 143 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2023-08-28 18:07:31,797 INFO L119 LiptonReduction]: Number of co-enabled transitions 3410 [2023-08-28 18:07:33,381 INFO L134 LiptonReduction]: Checked pairs total: 14079 [2023-08-28 18:07:33,381 INFO L136 LiptonReduction]: Total number of compositions: 43 [2023-08-28 18:07:33,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:07:33,383 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;@53d02658, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:07:33,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:07:33,388 INFO L130 PetriNetUnfolder]: 0/54 cut-off events. [2023-08-28 18:07:33,388 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-28 18:07:33,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:07:33,388 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:07:33,388 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:07:33,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:07:33,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1221561286, now seen corresponding path program 1 times [2023-08-28 18:07:33,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:07:33,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107209978] [2023-08-28 18:07:33,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:07:33,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:07:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:07:33,414 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:07:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:07:33,443 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:07:33,444 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:07:33,444 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:07:33,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-28 18:07:33,444 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:07:33,445 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:07:33,445 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:07:33,445 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-28 18:07:33,471 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:07:33,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 97 transitions, 254 flow [2023-08-28 18:07:33,488 INFO L130 PetriNetUnfolder]: 7/167 cut-off events. [2023-08-28 18:07:33,488 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-28 18:07:33,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 167 events. 7/167 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 333 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 164. Up to 14 conditions per place. [2023-08-28 18:07:33,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 97 transitions, 254 flow [2023-08-28 18:07:33,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 97 transitions, 254 flow [2023-08-28 18:07:33,491 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:07:33,491 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 97 transitions, 254 flow [2023-08-28 18:07:33,492 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 97 transitions, 254 flow [2023-08-28 18:07:33,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 97 transitions, 254 flow [2023-08-28 18:07:33,507 INFO L130 PetriNetUnfolder]: 7/167 cut-off events. [2023-08-28 18:07:33,508 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-28 18:07:33,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 167 events. 7/167 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 333 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 164. Up to 14 conditions per place. [2023-08-28 18:07:33,515 INFO L119 LiptonReduction]: Number of co-enabled transitions 5676 [2023-08-28 18:07:35,207 INFO L134 LiptonReduction]: Checked pairs total: 23197 [2023-08-28 18:07:35,207 INFO L136 LiptonReduction]: Total number of compositions: 50 [2023-08-28 18:07:35,208 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:07:35,209 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;@53d02658, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:07:35,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-08-28 18:07:35,210 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:07:35,210 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:07:35,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:07:35,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:07:35,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-28 18:07:35,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:07:35,210 INFO L85 PathProgramCache]: Analyzing trace with hash 31330598, now seen corresponding path program 1 times [2023-08-28 18:07:35,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:07:35,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632665642] [2023-08-28 18:07:35,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:07:35,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:07:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:07:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:07:35,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:07:35,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632665642] [2023-08-28 18:07:35,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632665642] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:07:35,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:07:35,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:07:35,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368230875] [2023-08-28 18:07:35,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:07:35,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:07:35,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:07:35,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:07:35,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:07:35,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 147 [2023-08-28 18:07:35,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:35,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:07:35,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 147 [2023-08-28 18:07:35,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:07:40,011 INFO L130 PetriNetUnfolder]: 42327/57003 cut-off events. [2023-08-28 18:07:40,011 INFO L131 PetriNetUnfolder]: For 39518/39518 co-relation queries the response was YES. [2023-08-28 18:07:40,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125506 conditions, 57003 events. 42327/57003 cut-off events. For 39518/39518 co-relation queries the response was YES. Maximal size of possible extension queue 2240. Compared 341190 event pairs, 42327 based on Foata normal form. 0/55637 useless extension candidates. Maximal degree in co-relation 27279. Up to 53250 conditions per place. [2023-08-28 18:07:40,185 INFO L137 encePairwiseOnDemand]: 116/147 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-08-28 18:07:40,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 29 transitions, 170 flow [2023-08-28 18:07:40,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:07:40,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:07:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 139 transitions. [2023-08-28 18:07:40,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47278911564625853 [2023-08-28 18:07:40,186 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 139 transitions. [2023-08-28 18:07:40,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 139 transitions. [2023-08-28 18:07:40,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:07:40,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 139 transitions. [2023-08-28 18:07:40,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:40,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:40,188 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:40,188 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 180 flow. Second operand 2 states and 139 transitions. [2023-08-28 18:07:40,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 29 transitions, 170 flow [2023-08-28 18:07:40,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 29 transitions, 140 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-08-28 18:07:40,222 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-28 18:07:40,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-28 18:07:40,222 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -30 predicate places. [2023-08-28 18:07:40,222 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-28 18:07:40,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:40,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (34 of 35 remaining) [2023-08-28 18:07:40,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 35 remaining) [2023-08-28 18:07:40,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 35 remaining) [2023-08-28 18:07:40,223 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 35 remaining) [2023-08-28 18:07:40,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (30 of 35 remaining) [2023-08-28 18:07:40,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 35 remaining) [2023-08-28 18:07:40,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (28 of 35 remaining) [2023-08-28 18:07:40,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 35 remaining) [2023-08-28 18:07:40,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (26 of 35 remaining) [2023-08-28 18:07:40,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 35 remaining) [2023-08-28 18:07:40,224 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 35 remaining) [2023-08-28 18:07:40,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 35 remaining) [2023-08-28 18:07:40,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (22 of 35 remaining) [2023-08-28 18:07:40,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (21 of 35 remaining) [2023-08-28 18:07:40,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 35 remaining) [2023-08-28 18:07:40,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 35 remaining) [2023-08-28 18:07:40,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 35 remaining) [2023-08-28 18:07:40,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 35 remaining) [2023-08-28 18:07:40,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 35 remaining) [2023-08-28 18:07:40,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 35 remaining) [2023-08-28 18:07:40,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 35 remaining) [2023-08-28 18:07:40,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 35 remaining) [2023-08-28 18:07:40,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 35 remaining) [2023-08-28 18:07:40,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 35 remaining) [2023-08-28 18:07:40,227 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 35 remaining) [2023-08-28 18:07:40,227 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 35 remaining) [2023-08-28 18:07:40,227 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 35 remaining) [2023-08-28 18:07:40,227 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 35 remaining) [2023-08-28 18:07:40,227 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 35 remaining) [2023-08-28 18:07:40,227 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 35 remaining) [2023-08-28 18:07:40,227 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 35 remaining) [2023-08-28 18:07:40,228 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 35 remaining) [2023-08-28 18:07:40,228 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 35 remaining) [2023-08-28 18:07:40,228 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 35 remaining) [2023-08-28 18:07:40,228 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 35 remaining) [2023-08-28 18:07:40,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-28 18:07:40,228 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:07:40,229 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-28 18:07:40,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 97 transitions, 254 flow [2023-08-28 18:07:40,242 INFO L130 PetriNetUnfolder]: 7/167 cut-off events. [2023-08-28 18:07:40,242 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-28 18:07:40,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 167 events. 7/167 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 333 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 164. Up to 14 conditions per place. [2023-08-28 18:07:40,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 97 transitions, 254 flow [2023-08-28 18:07:40,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 91 transitions, 242 flow [2023-08-28 18:07:40,244 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:07:40,245 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 91 transitions, 242 flow [2023-08-28 18:07:40,245 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 91 transitions, 242 flow [2023-08-28 18:07:40,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 91 transitions, 242 flow [2023-08-28 18:07:40,254 INFO L130 PetriNetUnfolder]: 0/125 cut-off events. [2023-08-28 18:07:40,254 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-28 18:07:40,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 125 events. 0/125 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 171 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2023-08-28 18:07:40,257 INFO L119 LiptonReduction]: Number of co-enabled transitions 4884 [2023-08-28 18:07:42,049 INFO L134 LiptonReduction]: Checked pairs total: 20539 [2023-08-28 18:07:42,050 INFO L136 LiptonReduction]: Total number of compositions: 48 [2023-08-28 18:07:42,051 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:07:42,051 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;@53d02658, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:07:42,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:07:42,056 INFO L130 PetriNetUnfolder]: 0/65 cut-off events. [2023-08-28 18:07:42,056 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-28 18:07:42,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:07:42,056 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:07:42,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:07:42,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:07:42,057 INFO L85 PathProgramCache]: Analyzing trace with hash 327419350, now seen corresponding path program 1 times [2023-08-28 18:07:42,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:07:42,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092448350] [2023-08-28 18:07:42,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:07:42,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:07:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:07:42,070 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:07:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:07:42,083 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:07:42,083 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:07:42,083 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:07:42,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-28 18:07:42,083 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:07:42,084 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:07:42,084 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:07:42,084 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-28 18:07:42,111 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:07:42,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 109 transitions, 295 flow [2023-08-28 18:07:42,123 INFO L130 PetriNetUnfolder]: 8/191 cut-off events. [2023-08-28 18:07:42,123 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-28 18:07:42,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 191 events. 8/191 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 397 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 197. Up to 16 conditions per place. [2023-08-28 18:07:42,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 109 transitions, 295 flow [2023-08-28 18:07:42,125 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 109 transitions, 295 flow [2023-08-28 18:07:42,125 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:07:42,125 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 109 transitions, 295 flow [2023-08-28 18:07:42,125 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 109 transitions, 295 flow [2023-08-28 18:07:42,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 109 transitions, 295 flow [2023-08-28 18:07:42,135 INFO L130 PetriNetUnfolder]: 8/191 cut-off events. [2023-08-28 18:07:42,135 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-28 18:07:42,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 191 events. 8/191 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 397 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 197. Up to 16 conditions per place. [2023-08-28 18:07:42,139 INFO L119 LiptonReduction]: Number of co-enabled transitions 7546 [2023-08-28 18:07:43,917 INFO L134 LiptonReduction]: Checked pairs total: 26335 [2023-08-28 18:07:43,918 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-08-28 18:07:43,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:07:43,919 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;@53d02658, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:07:43,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-08-28 18:07:43,920 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:07:43,920 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:07:43,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:07:43,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:07:43,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-08-28 18:07:43,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:07:43,921 INFO L85 PathProgramCache]: Analyzing trace with hash 38223138, now seen corresponding path program 1 times [2023-08-28 18:07:43,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:07:43,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851601180] [2023-08-28 18:07:43,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:07:43,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:07:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:07:43,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:07:43,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:07:43,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851601180] [2023-08-28 18:07:43,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851601180] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:07:43,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:07:43,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:07:43,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645524317] [2023-08-28 18:07:43,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:07:43,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:07:43,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:07:43,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:07:43,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:07:43,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 164 [2023-08-28 18:07:43,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 69 transitions, 215 flow. Second operand has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:07:43,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:07:43,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 164 [2023-08-28 18:07:43,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:08:03,324 INFO L130 PetriNetUnfolder]: 202071/260779 cut-off events. [2023-08-28 18:08:03,324 INFO L131 PetriNetUnfolder]: For 217694/217694 co-relation queries the response was YES. [2023-08-28 18:08:04,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577091 conditions, 260779 events. 202071/260779 cut-off events. For 217694/217694 co-relation queries the response was YES. Maximal size of possible extension queue 8519. Compared 1624846 event pairs, 202071 based on Foata normal form. 0/255318 useless extension candidates. Maximal degree in co-relation 127887. Up to 245762 conditions per place. [2023-08-28 18:08:04,308 INFO L137 encePairwiseOnDemand]: 128/164 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2023-08-28 18:08:04,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 33 transitions, 203 flow [2023-08-28 18:08:04,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:08:04,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:08:04,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 154 transitions. [2023-08-28 18:08:04,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4695121951219512 [2023-08-28 18:08:04,310 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 154 transitions. [2023-08-28 18:08:04,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 154 transitions. [2023-08-28 18:08:04,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:08:04,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 154 transitions. [2023-08-28 18:08:04,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:08:04,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:08:04,312 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:08:04,312 INFO L175 Difference]: Start difference. First operand has 84 places, 69 transitions, 215 flow. Second operand 2 states and 154 transitions. [2023-08-28 18:08:04,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 33 transitions, 203 flow [2023-08-28 18:08:04,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 33 transitions, 161 flow, removed 21 selfloop flow, removed 0 redundant places. [2023-08-28 18:08:04,491 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2023-08-28 18:08:04,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2023-08-28 18:08:04,492 INFO L281 CegarLoopForPetriNet]: 84 programPoint places, -35 predicate places. [2023-08-28 18:08:04,492 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2023-08-28 18:08:04,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 46.0) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:08:04,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (39 of 40 remaining) [2023-08-28 18:08:04,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (38 of 40 remaining) [2023-08-28 18:08:04,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (37 of 40 remaining) [2023-08-28 18:08:04,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (36 of 40 remaining) [2023-08-28 18:08:04,493 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (35 of 40 remaining) [2023-08-28 18:08:04,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (34 of 40 remaining) [2023-08-28 18:08:04,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (33 of 40 remaining) [2023-08-28 18:08:04,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 40 remaining) [2023-08-28 18:08:04,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (31 of 40 remaining) [2023-08-28 18:08:04,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (30 of 40 remaining) [2023-08-28 18:08:04,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (29 of 40 remaining) [2023-08-28 18:08:04,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (28 of 40 remaining) [2023-08-28 18:08:04,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (27 of 40 remaining) [2023-08-28 18:08:04,494 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 40 remaining) [2023-08-28 18:08:04,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 40 remaining) [2023-08-28 18:08:04,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 40 remaining) [2023-08-28 18:08:04,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 40 remaining) [2023-08-28 18:08:04,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (22 of 40 remaining) [2023-08-28 18:08:04,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 40 remaining) [2023-08-28 18:08:04,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 40 remaining) [2023-08-28 18:08:04,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (19 of 40 remaining) [2023-08-28 18:08:04,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 40 remaining) [2023-08-28 18:08:04,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 40 remaining) [2023-08-28 18:08:04,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 40 remaining) [2023-08-28 18:08:04,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 40 remaining) [2023-08-28 18:08:04,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (14 of 40 remaining) [2023-08-28 18:08:04,495 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 40 remaining) [2023-08-28 18:08:04,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 40 remaining) [2023-08-28 18:08:04,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 40 remaining) [2023-08-28 18:08:04,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 40 remaining) [2023-08-28 18:08:04,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 40 remaining) [2023-08-28 18:08:04,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 40 remaining) [2023-08-28 18:08:04,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 40 remaining) [2023-08-28 18:08:04,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 40 remaining) [2023-08-28 18:08:04,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 40 remaining) [2023-08-28 18:08:04,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 40 remaining) [2023-08-28 18:08:04,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 40 remaining) [2023-08-28 18:08:04,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 40 remaining) [2023-08-28 18:08:04,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 40 remaining) [2023-08-28 18:08:04,496 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 40 remaining) [2023-08-28 18:08:04,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-28 18:08:04,497 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:08:04,497 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 18:08:04,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 109 transitions, 295 flow [2023-08-28 18:08:04,513 INFO L130 PetriNetUnfolder]: 8/191 cut-off events. [2023-08-28 18:08:04,513 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-28 18:08:04,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 191 events. 8/191 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 397 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 197. Up to 16 conditions per place. [2023-08-28 18:08:04,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 109 transitions, 295 flow [2023-08-28 18:08:04,515 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 103 transitions, 283 flow [2023-08-28 18:08:04,515 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:08:04,516 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 103 transitions, 283 flow [2023-08-28 18:08:04,516 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 103 transitions, 283 flow [2023-08-28 18:08:04,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 103 transitions, 283 flow [2023-08-28 18:08:04,524 INFO L130 PetriNetUnfolder]: 0/143 cut-off events. [2023-08-28 18:08:04,524 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-28 18:08:04,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 143 events. 0/143 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 202 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2023-08-28 18:08:04,527 INFO L119 LiptonReduction]: Number of co-enabled transitions 6622 [2023-08-28 18:08:06,361 INFO L134 LiptonReduction]: Checked pairs total: 28063 [2023-08-28 18:08:06,361 INFO L136 LiptonReduction]: Total number of compositions: 53 [2023-08-28 18:08:06,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:08:06,365 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;@53d02658, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:08:06,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:08:06,372 INFO L130 PetriNetUnfolder]: 0/76 cut-off events. [2023-08-28 18:08:06,372 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-28 18:08:06,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:08:06,373 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:08:06,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:08:06,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:08:06,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1020389644, now seen corresponding path program 1 times [2023-08-28 18:08:06,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:08:06,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749722989] [2023-08-28 18:08:06,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:08:06,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:08:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:08:06,387 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:08:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:08:06,401 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:08:06,401 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:08:06,401 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:08:06,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-28 18:08:06,401 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:08:06,402 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:08:06,402 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:08:06,402 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-28 18:08:06,425 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:08:06,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 121 transitions, 338 flow [2023-08-28 18:08:06,443 INFO L130 PetriNetUnfolder]: 9/215 cut-off events. [2023-08-28 18:08:06,444 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-28 18:08:06,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 215 events. 9/215 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 442 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 231. Up to 18 conditions per place. [2023-08-28 18:08:06,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 121 transitions, 338 flow [2023-08-28 18:08:06,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 121 transitions, 338 flow [2023-08-28 18:08:06,447 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:08:06,447 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 121 transitions, 338 flow [2023-08-28 18:08:06,447 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 121 transitions, 338 flow [2023-08-28 18:08:06,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 121 transitions, 338 flow [2023-08-28 18:08:06,464 INFO L130 PetriNetUnfolder]: 9/215 cut-off events. [2023-08-28 18:08:06,464 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-28 18:08:06,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 215 events. 9/215 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 442 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 231. Up to 18 conditions per place. [2023-08-28 18:08:06,469 INFO L119 LiptonReduction]: Number of co-enabled transitions 9680 [2023-08-28 18:08:08,551 INFO L134 LiptonReduction]: Checked pairs total: 35304 [2023-08-28 18:08:08,551 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-28 18:08:08,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:08:08,553 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;@53d02658, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:08:08,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2023-08-28 18:08:08,554 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2023-08-28 18:08:08,554 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:08:08,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:08:08,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:08:08,555 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-08-28 18:08:08,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:08:08,555 INFO L85 PathProgramCache]: Analyzing trace with hash 45795846, now seen corresponding path program 1 times [2023-08-28 18:08:08,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:08:08,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579102914] [2023-08-28 18:08:08,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:08:08,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:08:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:08:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:08:08,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:08:08,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579102914] [2023-08-28 18:08:08,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579102914] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:08:08,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:08:08,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:08:08,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392114635] [2023-08-28 18:08:08,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:08:08,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:08:08,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:08:08,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:08:08,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:08:08,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 181 [2023-08-28 18:08:08,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 252 flow. Second operand has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:08:08,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:08:08,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 181 [2023-08-28 18:08:08,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-28 18:10:07,719 INFO L130 PetriNetUnfolder]: 939351/1174187 cut-off events. [2023-08-28 18:10:07,719 INFO L131 PetriNetUnfolder]: For 1147486/1147486 co-relation queries the response was YES. [2023-08-28 18:10:12,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2608708 conditions, 1174187 events. 939351/1174187 cut-off events. For 1147486/1147486 co-relation queries the response was YES. Maximal size of possible extension queue 32524. Compared 7552752 event pairs, 939351 based on Foata normal form. 0/1152342 useless extension candidates. Maximal degree in co-relation 586639. Up to 1114114 conditions per place. [2023-08-28 18:10:13,521 INFO L137 encePairwiseOnDemand]: 140/181 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-08-28 18:10:13,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 37 transitions, 238 flow [2023-08-28 18:10:13,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-28 18:10:13,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-28 18:10:13,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 169 transitions. [2023-08-28 18:10:13,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46685082872928174 [2023-08-28 18:10:13,537 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 169 transitions. [2023-08-28 18:10:13,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 169 transitions. [2023-08-28 18:10:13,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-28 18:10:13,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 169 transitions. [2023-08-28 18:10:13,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 84.5) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:10:13,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:10:13,553 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:10:13,554 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 252 flow. Second operand 2 states and 169 transitions. [2023-08-28 18:10:13,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 37 transitions, 238 flow [2023-08-28 18:10:15,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 37 transitions, 182 flow, removed 28 selfloop flow, removed 0 redundant places. [2023-08-28 18:10:15,971 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-08-28 18:10:15,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-08-28 18:10:15,972 INFO L281 CegarLoopForPetriNet]: 95 programPoint places, -40 predicate places. [2023-08-28 18:10:15,972 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-08-28 18:10:15,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.0) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:10:15,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (44 of 45 remaining) [2023-08-28 18:10:15,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (43 of 45 remaining) [2023-08-28 18:10:15,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (42 of 45 remaining) [2023-08-28 18:10:15,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (41 of 45 remaining) [2023-08-28 18:10:15,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (40 of 45 remaining) [2023-08-28 18:10:15,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (39 of 45 remaining) [2023-08-28 18:10:15,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (38 of 45 remaining) [2023-08-28 18:10:15,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (37 of 45 remaining) [2023-08-28 18:10:15,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (36 of 45 remaining) [2023-08-28 18:10:15,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (35 of 45 remaining) [2023-08-28 18:10:15,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 45 remaining) [2023-08-28 18:10:15,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (33 of 45 remaining) [2023-08-28 18:10:15,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 45 remaining) [2023-08-28 18:10:15,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (31 of 45 remaining) [2023-08-28 18:10:15,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (30 of 45 remaining) [2023-08-28 18:10:15,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (29 of 45 remaining) [2023-08-28 18:10:15,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 45 remaining) [2023-08-28 18:10:15,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 45 remaining) [2023-08-28 18:10:15,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 45 remaining) [2023-08-28 18:10:15,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 45 remaining) [2023-08-28 18:10:15,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (24 of 45 remaining) [2023-08-28 18:10:15,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 45 remaining) [2023-08-28 18:10:15,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 45 remaining) [2023-08-28 18:10:15,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 45 remaining) [2023-08-28 18:10:15,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 45 remaining) [2023-08-28 18:10:15,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 45 remaining) [2023-08-28 18:10:15,979 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 45 remaining) [2023-08-28 18:10:15,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 45 remaining) [2023-08-28 18:10:15,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 45 remaining) [2023-08-28 18:10:15,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 45 remaining) [2023-08-28 18:10:15,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (14 of 45 remaining) [2023-08-28 18:10:15,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 45 remaining) [2023-08-28 18:10:15,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 45 remaining) [2023-08-28 18:10:15,980 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 45 remaining) [2023-08-28 18:10:15,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 45 remaining) [2023-08-28 18:10:15,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 45 remaining) [2023-08-28 18:10:15,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (8 of 45 remaining) [2023-08-28 18:10:15,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 45 remaining) [2023-08-28 18:10:15,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 45 remaining) [2023-08-28 18:10:15,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 45 remaining) [2023-08-28 18:10:15,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 45 remaining) [2023-08-28 18:10:15,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 45 remaining) [2023-08-28 18:10:15,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 45 remaining) [2023-08-28 18:10:15,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 45 remaining) [2023-08-28 18:10:15,982 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 45 remaining) [2023-08-28 18:10:15,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-28 18:10:15,982 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:10:15,983 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 (1/2) [2023-08-28 18:10:15,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 121 transitions, 338 flow [2023-08-28 18:10:16,009 INFO L130 PetriNetUnfolder]: 9/215 cut-off events. [2023-08-28 18:10:16,009 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-28 18:10:16,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 215 events. 9/215 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 442 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 231. Up to 18 conditions per place. [2023-08-28 18:10:16,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 121 transitions, 338 flow [2023-08-28 18:10:16,011 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 115 transitions, 326 flow [2023-08-28 18:10:16,011 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:10:16,012 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 115 transitions, 326 flow [2023-08-28 18:10:16,012 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 115 transitions, 326 flow [2023-08-28 18:10:16,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 115 transitions, 326 flow [2023-08-28 18:10:16,029 INFO L130 PetriNetUnfolder]: 0/161 cut-off events. [2023-08-28 18:10:16,029 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-28 18:10:16,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 161 events. 0/161 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 232 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2023-08-28 18:10:16,032 INFO L119 LiptonReduction]: Number of co-enabled transitions 8624 [2023-08-28 18:10:18,424 INFO L134 LiptonReduction]: Checked pairs total: 43280 [2023-08-28 18:10:18,424 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-08-28 18:10:18,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-28 18:10:18,425 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;@53d02658, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:10:18,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-28 18:10:18,436 INFO L130 PetriNetUnfolder]: 0/87 cut-off events. [2023-08-28 18:10:18,438 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-28 18:10:18,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:10:18,438 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-28 18:10:18,438 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-28 18:10:18,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:10:18,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1204372415, now seen corresponding path program 1 times [2023-08-28 18:10:18,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:10:18,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384295120] [2023-08-28 18:10:18,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:10:18,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:10:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:10:18,481 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-28 18:10:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-28 18:10:18,506 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-28 18:10:18,506 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-28 18:10:18,506 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-28 18:10:18,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-28 18:10:18,507 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-28 18:10:18,507 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-28 18:10:18,507 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-28 18:10:18,507 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-28 18:10:18,573 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-28 18:10:18,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 133 transitions, 383 flow [2023-08-28 18:10:18,602 INFO L130 PetriNetUnfolder]: 10/239 cut-off events. [2023-08-28 18:10:18,602 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-28 18:10:18,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 239 events. 10/239 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 498 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 266. Up to 20 conditions per place. [2023-08-28 18:10:18,604 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 133 transitions, 383 flow [2023-08-28 18:10:18,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 133 transitions, 383 flow [2023-08-28 18:10:18,606 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-28 18:10:18,606 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 133 transitions, 383 flow [2023-08-28 18:10:18,606 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 133 transitions, 383 flow [2023-08-28 18:10:18,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 133 transitions, 383 flow [2023-08-28 18:10:18,628 INFO L130 PetriNetUnfolder]: 10/239 cut-off events. [2023-08-28 18:10:18,629 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-28 18:10:18,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 239 events. 10/239 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 498 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 266. Up to 20 conditions per place. [2023-08-28 18:10:18,648 INFO L119 LiptonReduction]: Number of co-enabled transitions 12078 [2023-08-28 18:10:21,317 INFO L134 LiptonReduction]: Checked pairs total: 52987 [2023-08-28 18:10:21,317 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-08-28 18:10:21,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-28 18:10:21,318 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;@53d02658, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-28 18:10:21,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-08-28 18:10:21,319 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-28 18:10:21,319 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-28 18:10:21,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-28 18:10:21,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-28 18:10:21,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-28 18:10:21,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-28 18:10:21,320 INFO L85 PathProgramCache]: Analyzing trace with hash 54047675, now seen corresponding path program 1 times [2023-08-28 18:10:21,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-28 18:10:21,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215703969] [2023-08-28 18:10:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-28 18:10:21,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-28 18:10:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-28 18:10:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-28 18:10:21,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-28 18:10:21,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215703969] [2023-08-28 18:10:21,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215703969] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-28 18:10:21,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-28 18:10:21,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-28 18:10:21,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379394651] [2023-08-28 18:10:21,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-28 18:10:21,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-28 18:10:21,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-28 18:10:21,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-28 18:10:21,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-28 18:10:21,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 198 [2023-08-28 18:10:21,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 87 transitions, 291 flow. Second operand has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-28 18:10:21,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-28 18:10:21,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 198 [2023-08-28 18:10:21,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand