./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_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 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 09:37:48,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 09:37:48,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 09:37:49,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 09:37:49,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 09:37:49,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 09:37:49,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 09:37:49,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 09:37:49,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 09:37:49,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 09:37:49,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 09:37:49,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 09:37:49,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 09:37:49,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 09:37:49,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 09:37:49,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 09:37:49,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 09:37:49,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 09:37:49,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 09:37:49,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 09:37:49,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 09:37:49,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 09:37:49,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 09:37:49,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 09:37:49,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 09:37:49,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 09:37:49,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 09:37:49,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 09:37:49,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 09:37:49,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 09:37:49,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 09:37:49,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 09:37:49,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 09:37:49,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 09:37:49,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 09:37:49,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 09:37:49,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 09:37:49,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 09:37:49,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 09:37:49,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 09:37:49,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 09:37:49,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 09:37:49,132 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 09:37:49,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 09:37:49,134 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 09:37:49,134 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 09:37:49,135 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 09:37:49,135 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 09:37:49,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 09:37:49,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 09:37:49,136 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 09:37:49,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 09:37:49,137 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 09:37:49,137 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 09:37:49,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 09:37:49,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 09:37:49,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 09:37:49,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 09:37:49,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 09:37:49,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 09:37:49,138 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 09:37:49,139 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 09:37:49,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 09:37:49,139 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 09:37:49,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 09:37:49,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 09:37:49,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 09:37:49,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 09:37:49,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 09:37:49,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 09:37:49,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 09:37:49,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 09:37:49,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 09:37:49,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 09:37:49,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 09:37:49,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 09:37:49,142 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 09:37:49,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 09:37:49,142 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 09:37:49,142 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 09:37:49,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 09:37:49,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 09:37:49,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 09:37:49,473 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 09:37:49,473 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 09:37:49,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2023-08-29 09:37:50,595 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 09:37:50,913 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 09:37:50,920 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2023-08-29 09:37:50,939 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/197af385a/c1534ae4c96c4f9fa0ed8fe5e908d5fa/FLAGae82a51ea [2023-08-29 09:37:50,957 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/197af385a/c1534ae4c96c4f9fa0ed8fe5e908d5fa [2023-08-29 09:37:50,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 09:37:50,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 09:37:50,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 09:37:50,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 09:37:50,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 09:37:50,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:37:50" (1/1) ... [2023-08-29 09:37:50,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ce879af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:37:50, skipping insertion in model container [2023-08-29 09:37:50,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:37:50" (1/1) ... [2023-08-29 09:37:50,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 09:37:51,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 09:37:51,204 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 09:37:51,335 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/45_monabsex1_vs.i[30633,30646] [2023-08-29 09:37:51,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 09:37:51,349 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 09:37:51,374 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 09:37:51,390 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/45_monabsex1_vs.i[30633,30646] [2023-08-29 09:37:51,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 09:37:51,433 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 09:37:51,433 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 09:37:51,434 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 09:37:51,439 INFO L208 MainTranslator]: Completed translation [2023-08-29 09:37:51,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:37:51 WrapperNode [2023-08-29 09:37:51,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 09:37:51,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 09:37:51,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 09:37:51,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 09:37:51,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:37:51" (1/1) ... [2023-08-29 09:37:51,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:37:51" (1/1) ... [2023-08-29 09:37:51,504 INFO L138 Inliner]: procedures = 171, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2023-08-29 09:37:51,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 09:37:51,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 09:37:51,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 09:37:51,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 09:37:51,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:37:51" (1/1) ... [2023-08-29 09:37:51,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:37:51" (1/1) ... [2023-08-29 09:37:51,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:37:51" (1/1) ... [2023-08-29 09:37:51,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:37:51" (1/1) ... [2023-08-29 09:37:51,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:37:51" (1/1) ... [2023-08-29 09:37:51,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:37:51" (1/1) ... [2023-08-29 09:37:51,544 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:37:51" (1/1) ... [2023-08-29 09:37:51,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:37:51" (1/1) ... [2023-08-29 09:37:51,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 09:37:51,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 09:37:51,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 09:37:51,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 09:37:51,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:37:51" (1/1) ... [2023-08-29 09:37:51,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 09:37:51,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 09:37:51,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 09:37:51,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 09:37:51,622 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-29 09:37:51,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-29 09:37:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 09:37:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 09:37:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 09:37:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 09:37:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 09:37:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 09:37:51,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 09:37:51,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 09:37:51,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 09:37:51,625 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 09:37:51,799 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 09:37:51,801 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 09:37:51,892 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 09:37:51,915 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 09:37:51,915 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-29 09:37:51,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:37:51 BoogieIcfgContainer [2023-08-29 09:37:51,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 09:37:51,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 09:37:51,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 09:37:51,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 09:37:51,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:37:50" (1/3) ... [2023-08-29 09:37:51,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a180969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:37:51, skipping insertion in model container [2023-08-29 09:37:51,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:37:51" (2/3) ... [2023-08-29 09:37:51,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a180969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:37:51, skipping insertion in model container [2023-08-29 09:37:51,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:37:51" (3/3) ... [2023-08-29 09:37:51,924 INFO L112 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2023-08-29 09:37:51,931 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 09:37:51,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 09:37:51,940 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-29 09:37:51,940 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 09:37:51,972 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:37:52,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 97 flow [2023-08-29 09:37:52,026 INFO L130 PetriNetUnfolder]: 2/56 cut-off events. [2023-08-29 09:37:52,026 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:37:52,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 56 events. 2/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 30. Up to 4 conditions per place. [2023-08-29 09:37:52,030 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 46 transitions, 97 flow [2023-08-29 09:37:52,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 46 transitions, 97 flow [2023-08-29 09:37:52,035 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:37:52,054 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 46 transitions, 97 flow [2023-08-29 09:37:52,057 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 46 transitions, 97 flow [2023-08-29 09:37:52,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 97 flow [2023-08-29 09:37:52,068 INFO L130 PetriNetUnfolder]: 2/56 cut-off events. [2023-08-29 09:37:52,068 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:37:52,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 56 events. 2/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 30. Up to 4 conditions per place. [2023-08-29 09:37:52,070 INFO L119 LiptonReduction]: Number of co-enabled transitions 312 [2023-08-29 09:37:53,232 INFO L134 LiptonReduction]: Checked pairs total: 309 [2023-08-29 09:37:53,232 INFO L136 LiptonReduction]: Total number of compositions: 49 [2023-08-29 09:37:53,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:37:53,249 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;@53134988, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:37:53,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-29 09:37:53,251 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 09:37:53,251 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:37:53,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:37:53,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 09:37:53,252 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-29 09:37:53,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:37:53,256 INFO L85 PathProgramCache]: Analyzing trace with hash 216, now seen corresponding path program 1 times [2023-08-29 09:37:53,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:37:53,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606935601] [2023-08-29 09:37:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:37:53,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:37:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:37:53,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:37:53,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:37:53,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606935601] [2023-08-29 09:37:53,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606935601] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:37:53,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:37:53,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 09:37:53,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548920518] [2023-08-29 09:37:53,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:37:53,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:37:53,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:37:53,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:37:53,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:37:53,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 95 [2023-08-29 09:37:53,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 10 transitions, 25 flow. Second operand has 2 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) [2023-08-29 09:37:53,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:37:53,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 95 [2023-08-29 09:37:53,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:37:53,405 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2023-08-29 09:37:53,406 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:37:53,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 12 events. 2/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 2 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 14. Up to 11 conditions per place. [2023-08-29 09:37:53,407 INFO L137 encePairwiseOnDemand]: 91/95 looper letters, 5 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2023-08-29 09:37:53,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 27 flow [2023-08-29 09:37:53,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:37:53,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:37:53,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 87 transitions. [2023-08-29 09:37:53,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2023-08-29 09:37:53,418 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 87 transitions. [2023-08-29 09:37:53,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 87 transitions. [2023-08-29 09:37:53,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:37:53,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 87 transitions. [2023-08-29 09:37:53,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:53,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:53,427 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:53,429 INFO L175 Difference]: Start difference. First operand has 13 places, 10 transitions, 25 flow. Second operand 2 states and 87 transitions. [2023-08-29 09:37:53,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 27 flow [2023-08-29 09:37:53,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:37:53,432 INFO L231 Difference]: Finished difference. Result has 10 places, 6 transitions, 17 flow [2023-08-29 09:37:53,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, 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=17, PETRI_PLACES=10, PETRI_TRANSITIONS=6} [2023-08-29 09:37:53,437 INFO L281 CegarLoopForPetriNet]: 13 programPoint places, -3 predicate places. [2023-08-29 09:37:53,437 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 17 flow [2023-08-29 09:37:53,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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) [2023-08-29 09:37:53,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:37:53,438 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 09:37:53,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 09:37:53,438 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-29 09:37:53,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:37:53,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2137962564, now seen corresponding path program 1 times [2023-08-29 09:37:53,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:37:53,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480064145] [2023-08-29 09:37:53,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:37:53,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:37:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:37:53,466 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:37:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:37:53,494 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:37:53,494 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:37:53,496 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-29 09:37:53,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2023-08-29 09:37:53,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2023-08-29 09:37:53,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2023-08-29 09:37:53,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2023-08-29 09:37:53,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2023-08-29 09:37:53,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 09:37:53,499 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:37:53,501 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:37:53,502 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 09:37:53,513 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:37:53,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 130 flow [2023-08-29 09:37:53,527 INFO L130 PetriNetUnfolder]: 3/81 cut-off events. [2023-08-29 09:37:53,527 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 09:37:53,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 3/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 57. Up to 6 conditions per place. [2023-08-29 09:37:53,533 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 59 transitions, 130 flow [2023-08-29 09:37:53,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 59 transitions, 130 flow [2023-08-29 09:37:53,535 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:37:53,535 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 59 transitions, 130 flow [2023-08-29 09:37:53,535 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 59 transitions, 130 flow [2023-08-29 09:37:53,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 130 flow [2023-08-29 09:37:53,553 INFO L130 PetriNetUnfolder]: 3/81 cut-off events. [2023-08-29 09:37:53,554 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 09:37:53,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 3/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 57. Up to 6 conditions per place. [2023-08-29 09:37:53,557 INFO L119 LiptonReduction]: Number of co-enabled transitions 936 [2023-08-29 09:37:54,670 INFO L134 LiptonReduction]: Checked pairs total: 1254 [2023-08-29 09:37:54,670 INFO L136 LiptonReduction]: Total number of compositions: 52 [2023-08-29 09:37:54,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:37:54,673 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;@53134988, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:37:54,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-29 09:37:54,673 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 09:37:54,674 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:37:54,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:37:54,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 09:37:54,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 09:37:54,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:37:54,674 INFO L85 PathProgramCache]: Analyzing trace with hash 342, now seen corresponding path program 1 times [2023-08-29 09:37:54,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:37:54,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189874054] [2023-08-29 09:37:54,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:37:54,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:37:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:37:54,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:37:54,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:37:54,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189874054] [2023-08-29 09:37:54,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189874054] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:37:54,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:37:54,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 09:37:54,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689355630] [2023-08-29 09:37:54,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:37:54,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:37:54,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:37:54,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:37:54,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:37:54,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2023-08-29 09:37:54,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:54,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:37:54,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2023-08-29 09:37:54,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:37:54,719 INFO L130 PetriNetUnfolder]: 20/57 cut-off events. [2023-08-29 09:37:54,720 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-29 09:37:54,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 57 events. 20/57 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 164 event pairs, 20 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 28. Up to 47 conditions per place. [2023-08-29 09:37:54,721 INFO L137 encePairwiseOnDemand]: 105/111 looper letters, 8 selfloop transitions, 0 changer transitions 0/11 dead transitions. [2023-08-29 09:37:54,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 11 transitions, 50 flow [2023-08-29 09:37:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:37:54,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:37:54,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 108 transitions. [2023-08-29 09:37:54,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-08-29 09:37:54,726 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 108 transitions. [2023-08-29 09:37:54,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 108 transitions. [2023-08-29 09:37:54,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:37:54,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 108 transitions. [2023-08-29 09:37:54,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:54,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:54,730 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:54,731 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 2 states and 108 transitions. [2023-08-29 09:37:54,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 11 transitions, 50 flow [2023-08-29 09:37:54,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 11 transitions, 48 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-29 09:37:54,732 INFO L231 Difference]: Finished difference. Result has 17 places, 11 transitions, 32 flow [2023-08-29 09:37:54,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2023-08-29 09:37:54,733 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -5 predicate places. [2023-08-29 09:37:54,733 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 11 transitions, 32 flow [2023-08-29 09:37:54,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.5) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:54,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:37:54,734 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 09:37:54,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 09:37:54,734 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 09:37:54,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:37:54,735 INFO L85 PathProgramCache]: Analyzing trace with hash -492019913, now seen corresponding path program 1 times [2023-08-29 09:37:54,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:37:54,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210734087] [2023-08-29 09:37:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:37:54,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:37:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:37:54,772 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:37:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:37:54,806 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:37:54,810 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:37:54,811 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-08-29 09:37:54,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 8 remaining) [2023-08-29 09:37:54,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 8 remaining) [2023-08-29 09:37:54,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 8 remaining) [2023-08-29 09:37:54,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 8 remaining) [2023-08-29 09:37:54,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 8 remaining) [2023-08-29 09:37:54,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 8 remaining) [2023-08-29 09:37:54,816 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 8 remaining) [2023-08-29 09:37:54,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 09:37:54,817 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:37:54,817 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:37:54,817 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 09:37:54,831 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:37:54,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 72 transitions, 165 flow [2023-08-29 09:37:54,853 INFO L130 PetriNetUnfolder]: 4/106 cut-off events. [2023-08-29 09:37:54,853 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 09:37:54,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 106 events. 4/106 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 170 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 85. Up to 8 conditions per place. [2023-08-29 09:37:54,854 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 72 transitions, 165 flow [2023-08-29 09:37:54,854 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 72 transitions, 165 flow [2023-08-29 09:37:54,854 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:37:54,855 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 72 transitions, 165 flow [2023-08-29 09:37:54,855 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 72 transitions, 165 flow [2023-08-29 09:37:54,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 72 transitions, 165 flow [2023-08-29 09:37:54,870 INFO L130 PetriNetUnfolder]: 4/106 cut-off events. [2023-08-29 09:37:54,870 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 09:37:54,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 106 events. 4/106 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 170 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 85. Up to 8 conditions per place. [2023-08-29 09:37:54,873 INFO L119 LiptonReduction]: Number of co-enabled transitions 1872 [2023-08-29 09:37:55,992 INFO L134 LiptonReduction]: Checked pairs total: 2880 [2023-08-29 09:37:55,993 INFO L136 LiptonReduction]: Total number of compositions: 63 [2023-08-29 09:37:55,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:37:55,995 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;@53134988, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:37:55,995 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-29 09:37:55,996 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 09:37:55,996 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:37:55,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:37:55,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 09:37:55,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-29 09:37:55,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:37:55,997 INFO L85 PathProgramCache]: Analyzing trace with hash 490, now seen corresponding path program 1 times [2023-08-29 09:37:55,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:37:55,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195994628] [2023-08-29 09:37:55,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:37:55,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:37:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:37:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:37:56,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:37:56,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195994628] [2023-08-29 09:37:56,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195994628] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:37:56,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:37:56,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 09:37:56,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957492133] [2023-08-29 09:37:56,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:37:56,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:37:56,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:37:56,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:37:56,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:37:56,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 135 [2023-08-29 09:37:56,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 65 flow. Second operand has 2 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:56,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:37:56,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 135 [2023-08-29 09:37:56,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:37:56,060 INFO L130 PetriNetUnfolder]: 110/225 cut-off events. [2023-08-29 09:37:56,060 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-08-29 09:37:56,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 225 events. 110/225 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 899 event pairs, 110 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 127. Up to 191 conditions per place. [2023-08-29 09:37:56,063 INFO L137 encePairwiseOnDemand]: 127/135 looper letters, 11 selfloop transitions, 0 changer transitions 0/14 dead transitions. [2023-08-29 09:37:56,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 71 flow [2023-08-29 09:37:56,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:37:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:37:56,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 129 transitions. [2023-08-29 09:37:56,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2023-08-29 09:37:56,065 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 129 transitions. [2023-08-29 09:37:56,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 129 transitions. [2023-08-29 09:37:56,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:37:56,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 129 transitions. [2023-08-29 09:37:56,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 64.5) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:56,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:56,067 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:56,067 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 65 flow. Second operand 2 states and 129 transitions. [2023-08-29 09:37:56,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 71 flow [2023-08-29 09:37:56,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 14 transitions, 65 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-29 09:37:56,069 INFO L231 Difference]: Finished difference. Result has 22 places, 14 transitions, 43 flow [2023-08-29 09:37:56,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=43, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2023-08-29 09:37:56,069 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-08-29 09:37:56,070 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 43 flow [2023-08-29 09:37:56,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.5) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:56,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:37:56,070 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-29 09:37:56,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 09:37:56,071 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-29 09:37:56,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:37:56,071 INFO L85 PathProgramCache]: Analyzing trace with hash 55962006, now seen corresponding path program 1 times [2023-08-29 09:37:56,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:37:56,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433635213] [2023-08-29 09:37:56,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:37:56,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:37:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:37:56,089 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:37:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:37:56,104 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:37:56,105 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:37:56,105 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-08-29 09:37:56,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-08-29 09:37:56,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2023-08-29 09:37:56,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2023-08-29 09:37:56,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2023-08-29 09:37:56,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-08-29 09:37:56,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-08-29 09:37:56,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-08-29 09:37:56,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-08-29 09:37:56,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-08-29 09:37:56,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 09:37:56,108 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:37:56,108 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:37:56,108 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-29 09:37:56,122 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:37:56,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 202 flow [2023-08-29 09:37:56,136 INFO L130 PetriNetUnfolder]: 5/131 cut-off events. [2023-08-29 09:37:56,136 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-29 09:37:56,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 131 events. 5/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 224 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 114. Up to 10 conditions per place. [2023-08-29 09:37:56,137 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 202 flow [2023-08-29 09:37:56,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 85 transitions, 202 flow [2023-08-29 09:37:56,138 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:37:56,139 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 85 transitions, 202 flow [2023-08-29 09:37:56,139 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 85 transitions, 202 flow [2023-08-29 09:37:56,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 202 flow [2023-08-29 09:37:56,149 INFO L130 PetriNetUnfolder]: 5/131 cut-off events. [2023-08-29 09:37:56,149 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-29 09:37:56,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 131 events. 5/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 224 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 114. Up to 10 conditions per place. [2023-08-29 09:37:56,152 INFO L119 LiptonReduction]: Number of co-enabled transitions 3120 [2023-08-29 09:37:57,443 INFO L134 LiptonReduction]: Checked pairs total: 5004 [2023-08-29 09:37:57,443 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-08-29 09:37:57,451 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:37:57,452 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;@53134988, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:37:57,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-29 09:37:57,453 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 09:37:57,453 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:37:57,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:37:57,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 09:37:57,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-29 09:37:57,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:37:57,454 INFO L85 PathProgramCache]: Analyzing trace with hash 658, now seen corresponding path program 1 times [2023-08-29 09:37:57,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:37:57,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926707049] [2023-08-29 09:37:57,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:37:57,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:37:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:37:57,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:37:57,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:37:57,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926707049] [2023-08-29 09:37:57,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926707049] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:37:57,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:37:57,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 09:37:57,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821723326] [2023-08-29 09:37:57,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:37:57,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:37:57,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:37:57,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:37:57,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:37:57,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 154 [2023-08-29 09:37:57,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 86 flow. Second operand has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:57,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:37:57,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 154 [2023-08-29 09:37:57,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:37:57,565 INFO L130 PetriNetUnfolder]: 488/837 cut-off events. [2023-08-29 09:37:57,565 INFO L131 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2023-08-29 09:37:57,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1863 conditions, 837 events. 488/837 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3921 event pairs, 488 based on Foata normal form. 0/796 useless extension candidates. Maximal degree in co-relation 511. Up to 731 conditions per place. [2023-08-29 09:37:57,571 INFO L137 encePairwiseOnDemand]: 144/154 looper letters, 14 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-08-29 09:37:57,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 17 transitions, 94 flow [2023-08-29 09:37:57,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:37:57,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:37:57,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 150 transitions. [2023-08-29 09:37:57,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.487012987012987 [2023-08-29 09:37:57,593 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 150 transitions. [2023-08-29 09:37:57,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 150 transitions. [2023-08-29 09:37:57,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:37:57,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 150 transitions. [2023-08-29 09:37:57,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:57,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:57,596 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:57,596 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 86 flow. Second operand 2 states and 150 transitions. [2023-08-29 09:37:57,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 17 transitions, 94 flow [2023-08-29 09:37:57,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 17 transitions, 82 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-29 09:37:57,598 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 54 flow [2023-08-29 09:37:57,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, 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=54, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-08-29 09:37:57,599 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -9 predicate places. [2023-08-29 09:37:57,599 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 54 flow [2023-08-29 09:37:57,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:57,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:37:57,600 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-29 09:37:57,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 09:37:57,600 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-29 09:37:57,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:37:57,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1735017315, now seen corresponding path program 1 times [2023-08-29 09:37:57,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:37:57,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219053078] [2023-08-29 09:37:57,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:37:57,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:37:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:37:57,618 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:37:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:37:57,631 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:37:57,631 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:37:57,631 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2023-08-29 09:37:57,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2023-08-29 09:37:57,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2023-08-29 09:37:57,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2023-08-29 09:37:57,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2023-08-29 09:37:57,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2023-08-29 09:37:57,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2023-08-29 09:37:57,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2023-08-29 09:37:57,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2023-08-29 09:37:57,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2023-08-29 09:37:57,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2023-08-29 09:37:57,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2023-08-29 09:37:57,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 09:37:57,634 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:37:57,634 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:37:57,635 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-29 09:37:57,651 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:37:57,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 98 transitions, 241 flow [2023-08-29 09:37:57,665 INFO L130 PetriNetUnfolder]: 6/156 cut-off events. [2023-08-29 09:37:57,665 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-29 09:37:57,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 156 events. 6/156 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 295 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 144. Up to 12 conditions per place. [2023-08-29 09:37:57,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 98 transitions, 241 flow [2023-08-29 09:37:57,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 98 transitions, 241 flow [2023-08-29 09:37:57,667 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:37:57,667 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 98 transitions, 241 flow [2023-08-29 09:37:57,668 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 98 transitions, 241 flow [2023-08-29 09:37:57,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 98 transitions, 241 flow [2023-08-29 09:37:57,679 INFO L130 PetriNetUnfolder]: 6/156 cut-off events. [2023-08-29 09:37:57,680 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-29 09:37:57,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 156 events. 6/156 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 295 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 144. Up to 12 conditions per place. [2023-08-29 09:37:57,684 INFO L119 LiptonReduction]: Number of co-enabled transitions 4680 [2023-08-29 09:37:59,075 INFO L134 LiptonReduction]: Checked pairs total: 7835 [2023-08-29 09:37:59,075 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-29 09:37:59,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:37:59,077 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;@53134988, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:37:59,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-29 09:37:59,077 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 09:37:59,077 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:37:59,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:37:59,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 09:37:59,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-29 09:37:59,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:37:59,078 INFO L85 PathProgramCache]: Analyzing trace with hash 855, now seen corresponding path program 1 times [2023-08-29 09:37:59,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:37:59,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385808864] [2023-08-29 09:37:59,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:37:59,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:37:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:37:59,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:37:59,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:37:59,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385808864] [2023-08-29 09:37:59,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385808864] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:37:59,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:37:59,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 09:37:59,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547259114] [2023-08-29 09:37:59,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:37:59,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:37:59,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:37:59,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:37:59,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:37:59,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 185 [2023-08-29 09:37:59,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 109 flow. Second operand has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:59,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:37:59,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 185 [2023-08-29 09:37:59,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:37:59,337 INFO L130 PetriNetUnfolder]: 1946/2997 cut-off events. [2023-08-29 09:37:59,337 INFO L131 PetriNetUnfolder]: For 2176/2176 co-relation queries the response was YES. [2023-08-29 09:37:59,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6751 conditions, 2997 events. 1946/2997 cut-off events. For 2176/2176 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 15447 event pairs, 1946 based on Foata normal form. 0/2876 useless extension candidates. Maximal degree in co-relation 1924. Up to 2675 conditions per place. [2023-08-29 09:37:59,353 INFO L137 encePairwiseOnDemand]: 173/185 looper letters, 17 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2023-08-29 09:37:59,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 20 transitions, 119 flow [2023-08-29 09:37:59,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:37:59,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:37:59,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 171 transitions. [2023-08-29 09:37:59,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2023-08-29 09:37:59,356 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 171 transitions. [2023-08-29 09:37:59,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 171 transitions. [2023-08-29 09:37:59,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:37:59,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 171 transitions. [2023-08-29 09:37:59,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:59,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:59,359 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:59,359 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 109 flow. Second operand 2 states and 171 transitions. [2023-08-29 09:37:59,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 20 transitions, 119 flow [2023-08-29 09:37:59,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 99 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-29 09:37:59,363 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 65 flow [2023-08-29 09:37:59,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=65, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2023-08-29 09:37:59,364 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-08-29 09:37:59,364 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 65 flow [2023-08-29 09:37:59,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 71.5) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:37:59,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:37:59,364 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:37:59,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 09:37:59,365 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-29 09:37:59,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:37:59,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1471643062, now seen corresponding path program 1 times [2023-08-29 09:37:59,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:37:59,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957428272] [2023-08-29 09:37:59,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:37:59,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:37:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:37:59,380 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:37:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:37:59,393 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:37:59,394 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:37:59,394 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2023-08-29 09:37:59,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2023-08-29 09:37:59,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2023-08-29 09:37:59,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2023-08-29 09:37:59,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2023-08-29 09:37:59,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2023-08-29 09:37:59,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2023-08-29 09:37:59,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2023-08-29 09:37:59,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2023-08-29 09:37:59,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2023-08-29 09:37:59,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2023-08-29 09:37:59,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2023-08-29 09:37:59,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2023-08-29 09:37:59,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2023-08-29 09:37:59,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 09:37:59,397 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:37:59,397 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:37:59,397 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-29 09:37:59,414 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:37:59,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 111 transitions, 282 flow [2023-08-29 09:37:59,429 INFO L130 PetriNetUnfolder]: 7/181 cut-off events. [2023-08-29 09:37:59,430 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-29 09:37:59,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 181 events. 7/181 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. 0/154 useless extension candidates. Maximal degree in co-relation 175. Up to 14 conditions per place. [2023-08-29 09:37:59,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 111 transitions, 282 flow [2023-08-29 09:37:59,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 111 transitions, 282 flow [2023-08-29 09:37:59,432 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:37:59,432 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 111 transitions, 282 flow [2023-08-29 09:37:59,432 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 111 transitions, 282 flow [2023-08-29 09:37:59,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 111 transitions, 282 flow [2023-08-29 09:37:59,447 INFO L130 PetriNetUnfolder]: 7/181 cut-off events. [2023-08-29 09:37:59,447 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-29 09:37:59,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 181 events. 7/181 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. 0/154 useless extension candidates. Maximal degree in co-relation 175. Up to 14 conditions per place. [2023-08-29 09:37:59,452 INFO L119 LiptonReduction]: Number of co-enabled transitions 6552 [2023-08-29 09:38:01,008 INFO L134 LiptonReduction]: Checked pairs total: 10067 [2023-08-29 09:38:01,008 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-29 09:38:01,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:38:01,010 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;@53134988, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:38:01,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-29 09:38:01,011 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 09:38:01,011 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:38:01,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:38:01,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 09:38:01,011 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-29 09:38:01,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:38:01,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1073, now seen corresponding path program 1 times [2023-08-29 09:38:01,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:38:01,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725985305] [2023-08-29 09:38:01,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:38:01,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:38:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:38:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:38:01,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:38:01,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725985305] [2023-08-29 09:38:01,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725985305] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:38:01,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:38:01,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 09:38:01,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033462040] [2023-08-29 09:38:01,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:38:01,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:38:01,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:38:01,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:38:01,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:38:01,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 205 [2023-08-29 09:38:01,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 134 flow. Second operand has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:01,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:38:01,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 205 [2023-08-29 09:38:01,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:38:01,983 INFO L130 PetriNetUnfolder]: 7292/10449 cut-off events. [2023-08-29 09:38:01,983 INFO L131 PetriNetUnfolder]: For 9628/9628 co-relation queries the response was YES. [2023-08-29 09:38:02,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23762 conditions, 10449 events. 7292/10449 cut-off events. For 9628/9628 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 57300 event pairs, 7292 based on Foata normal form. 0/10085 useless extension candidates. Maximal degree in co-relation 6946. Up to 9479 conditions per place. [2023-08-29 09:38:02,053 INFO L137 encePairwiseOnDemand]: 191/205 looper letters, 20 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2023-08-29 09:38:02,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 23 transitions, 146 flow [2023-08-29 09:38:02,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:38:02,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:38:02,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 192 transitions. [2023-08-29 09:38:02,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4682926829268293 [2023-08-29 09:38:02,054 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 192 transitions. [2023-08-29 09:38:02,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 192 transitions. [2023-08-29 09:38:02,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:38:02,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 192 transitions. [2023-08-29 09:38:02,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:02,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:02,057 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:02,057 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 134 flow. Second operand 2 states and 192 transitions. [2023-08-29 09:38:02,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 23 transitions, 146 flow [2023-08-29 09:38:02,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 23 transitions, 116 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-08-29 09:38:02,063 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 76 flow [2023-08-29 09:38:02,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2023-08-29 09:38:02,064 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -13 predicate places. [2023-08-29 09:38:02,064 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 76 flow [2023-08-29 09:38:02,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:02,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:38:02,065 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:38:02,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 09:38:02,065 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-29 09:38:02,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:38:02,065 INFO L85 PathProgramCache]: Analyzing trace with hash 449706557, now seen corresponding path program 1 times [2023-08-29 09:38:02,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:38:02,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579973104] [2023-08-29 09:38:02,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:38:02,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:38:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:38:02,082 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:38:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:38:02,141 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:38:02,146 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:38:02,146 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2023-08-29 09:38:02,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-08-29 09:38:02,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-08-29 09:38:02,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2023-08-29 09:38:02,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-08-29 09:38:02,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-08-29 09:38:02,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-08-29 09:38:02,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-08-29 09:38:02,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-08-29 09:38:02,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-08-29 09:38:02,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-08-29 09:38:02,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-08-29 09:38:02,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-08-29 09:38:02,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-08-29 09:38:02,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-08-29 09:38:02,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-08-29 09:38:02,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 09:38:02,149 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:38:02,151 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:38:02,151 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-29 09:38:02,185 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:38:02,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 124 transitions, 325 flow [2023-08-29 09:38:02,206 INFO L130 PetriNetUnfolder]: 8/206 cut-off events. [2023-08-29 09:38:02,207 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-29 09:38:02,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 206 events. 8/206 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 431 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 207. Up to 16 conditions per place. [2023-08-29 09:38:02,208 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 124 transitions, 325 flow [2023-08-29 09:38:02,209 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 124 transitions, 325 flow [2023-08-29 09:38:02,210 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:38:02,210 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 124 transitions, 325 flow [2023-08-29 09:38:02,210 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 124 transitions, 325 flow [2023-08-29 09:38:02,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 124 transitions, 325 flow [2023-08-29 09:38:02,228 INFO L130 PetriNetUnfolder]: 8/206 cut-off events. [2023-08-29 09:38:02,228 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-29 09:38:02,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 206 events. 8/206 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 431 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 207. Up to 16 conditions per place. [2023-08-29 09:38:02,235 INFO L119 LiptonReduction]: Number of co-enabled transitions 8736 [2023-08-29 09:38:03,874 INFO L134 LiptonReduction]: Checked pairs total: 15729 [2023-08-29 09:38:03,874 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-08-29 09:38:03,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:38:03,877 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;@53134988, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:38:03,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-29 09:38:03,877 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 09:38:03,877 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:38:03,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:38:03,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 09:38:03,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-29 09:38:03,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:38:03,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1312, now seen corresponding path program 1 times [2023-08-29 09:38:03,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:38:03,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823921025] [2023-08-29 09:38:03,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:38:03,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:38:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:38:03,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:38:03,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:38:03,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823921025] [2023-08-29 09:38:03,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823921025] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:38:03,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:38:03,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 09:38:03,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334154832] [2023-08-29 09:38:03,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:38:03,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:38:03,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:38:03,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:38:03,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:38:03,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 226 [2023-08-29 09:38:03,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 161 flow. Second operand has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:03,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:38:03,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 226 [2023-08-29 09:38:03,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:38:06,549 INFO L130 PetriNetUnfolder]: 26246/35721 cut-off events. [2023-08-29 09:38:06,549 INFO L131 PetriNetUnfolder]: For 40003/40003 co-relation queries the response was YES. [2023-08-29 09:38:06,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81840 conditions, 35721 events. 26246/35721 cut-off events. For 40003/40003 co-relation queries the response was YES. Maximal size of possible extension queue 1425. Compared 205982 event pairs, 26246 based on Foata normal form. 0/34627 useless extension candidates. Maximal degree in co-relation 24361. Up to 32807 conditions per place. [2023-08-29 09:38:06,802 INFO L137 encePairwiseOnDemand]: 210/226 looper letters, 23 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-08-29 09:38:06,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 175 flow [2023-08-29 09:38:06,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:38:06,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:38:06,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 213 transitions. [2023-08-29 09:38:06,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47123893805309736 [2023-08-29 09:38:06,804 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 213 transitions. [2023-08-29 09:38:06,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 213 transitions. [2023-08-29 09:38:06,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:38:06,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 213 transitions. [2023-08-29 09:38:06,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 106.5) internal successors, (213), 2 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:06,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:06,807 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:06,807 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 161 flow. Second operand 2 states and 213 transitions. [2023-08-29 09:38:06,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 175 flow [2023-08-29 09:38:06,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 26 transitions, 133 flow, removed 21 selfloop flow, removed 0 redundant places. [2023-08-29 09:38:06,857 INFO L231 Difference]: Finished difference. Result has 42 places, 26 transitions, 87 flow [2023-08-29 09:38:06,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=87, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2023-08-29 09:38:06,859 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -15 predicate places. [2023-08-29 09:38:06,859 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 87 flow [2023-08-29 09:38:06,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:06,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:38:06,859 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:38:06,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 09:38:06,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2023-08-29 09:38:06,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:38:06,860 INFO L85 PathProgramCache]: Analyzing trace with hash -189330686, now seen corresponding path program 1 times [2023-08-29 09:38:06,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:38:06,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909480111] [2023-08-29 09:38:06,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:38:06,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:38:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:38:06,882 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:38:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:38:06,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:38:06,919 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:38:06,920 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-08-29 09:38:06,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2023-08-29 09:38:06,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2023-08-29 09:38:06,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2023-08-29 09:38:06,920 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2023-08-29 09:38:06,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2023-08-29 09:38:06,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2023-08-29 09:38:06,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2023-08-29 09:38:06,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2023-08-29 09:38:06,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2023-08-29 09:38:06,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2023-08-29 09:38:06,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2023-08-29 09:38:06,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2023-08-29 09:38:06,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2023-08-29 09:38:06,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2023-08-29 09:38:06,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2023-08-29 09:38:06,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2023-08-29 09:38:06,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2023-08-29 09:38:06,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 09:38:06,924 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:38:06,925 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:38:06,925 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-29 09:38:06,948 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:38:06,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 137 transitions, 370 flow [2023-08-29 09:38:06,966 INFO L130 PetriNetUnfolder]: 9/231 cut-off events. [2023-08-29 09:38:06,966 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-29 09:38:06,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 231 events. 9/231 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 480 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 240. Up to 18 conditions per place. [2023-08-29 09:38:06,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 137 transitions, 370 flow [2023-08-29 09:38:06,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 137 transitions, 370 flow [2023-08-29 09:38:06,970 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:38:06,970 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 153 places, 137 transitions, 370 flow [2023-08-29 09:38:06,970 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 153 places, 137 transitions, 370 flow [2023-08-29 09:38:06,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 137 transitions, 370 flow [2023-08-29 09:38:06,987 INFO L130 PetriNetUnfolder]: 9/231 cut-off events. [2023-08-29 09:38:06,987 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-29 09:38:06,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 231 events. 9/231 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 480 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 240. Up to 18 conditions per place. [2023-08-29 09:38:06,997 INFO L119 LiptonReduction]: Number of co-enabled transitions 11232 [2023-08-29 09:38:08,771 INFO L134 LiptonReduction]: Checked pairs total: 19979 [2023-08-29 09:38:08,771 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-08-29 09:38:08,772 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:38:08,773 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;@53134988, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:38:08,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-29 09:38:08,773 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 09:38:08,774 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:38:08,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:38:08,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 09:38:08,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-29 09:38:08,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:38:08,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1576, now seen corresponding path program 1 times [2023-08-29 09:38:08,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:38:08,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171314811] [2023-08-29 09:38:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:38:08,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:38:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:38:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:38:08,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:38:08,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171314811] [2023-08-29 09:38:08,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171314811] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:38:08,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:38:08,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 09:38:08,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035304600] [2023-08-29 09:38:08,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:38:08,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:38:08,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:38:08,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:38:08,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:38:08,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 252 [2023-08-29 09:38:08,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 190 flow. Second operand has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:08,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:38:08,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 252 [2023-08-29 09:38:08,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:38:17,058 INFO L130 PetriNetUnfolder]: 91856/120285 cut-off events. [2023-08-29 09:38:17,058 INFO L131 PetriNetUnfolder]: For 158830/158830 co-relation queries the response was YES. [2023-08-29 09:38:17,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277213 conditions, 120285 events. 91856/120285 cut-off events. For 158830/158830 co-relation queries the response was YES. Maximal size of possible extension queue 4108. Compared 717124 event pairs, 91856 based on Foata normal form. 0/117004 useless extension candidates. Maximal degree in co-relation 83653. Up to 111539 conditions per place. [2023-08-29 09:38:17,885 INFO L137 encePairwiseOnDemand]: 234/252 looper letters, 26 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-08-29 09:38:17,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 29 transitions, 206 flow [2023-08-29 09:38:17,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:38:17,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:38:17,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 234 transitions. [2023-08-29 09:38:17,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2023-08-29 09:38:17,886 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 234 transitions. [2023-08-29 09:38:17,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 234 transitions. [2023-08-29 09:38:17,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:38:17,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 234 transitions. [2023-08-29 09:38:17,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 117.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:17,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:17,888 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:17,888 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 190 flow. Second operand 2 states and 234 transitions. [2023-08-29 09:38:17,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 29 transitions, 206 flow [2023-08-29 09:38:18,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 29 transitions, 150 flow, removed 28 selfloop flow, removed 0 redundant places. [2023-08-29 09:38:18,122 INFO L231 Difference]: Finished difference. Result has 47 places, 29 transitions, 98 flow [2023-08-29 09:38:18,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, 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=98, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2023-08-29 09:38:18,125 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -17 predicate places. [2023-08-29 09:38:18,125 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 98 flow [2023-08-29 09:38:18,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:18,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:38:18,126 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:38:18,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 09:38:18,126 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-29 09:38:18,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:38:18,126 INFO L85 PathProgramCache]: Analyzing trace with hash 73954710, now seen corresponding path program 1 times [2023-08-29 09:38:18,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:38:18,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831749046] [2023-08-29 09:38:18,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:38:18,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:38:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:38:18,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:38:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:38:18,167 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:38:18,167 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:38:18,168 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2023-08-29 09:38:18,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-08-29 09:38:18,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-08-29 09:38:18,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2023-08-29 09:38:18,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-08-29 09:38:18,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2023-08-29 09:38:18,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-08-29 09:38:18,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-08-29 09:38:18,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2023-08-29 09:38:18,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2023-08-29 09:38:18,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2023-08-29 09:38:18,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2023-08-29 09:38:18,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2023-08-29 09:38:18,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-08-29 09:38:18,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-08-29 09:38:18,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2023-08-29 09:38:18,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2023-08-29 09:38:18,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2023-08-29 09:38:18,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-08-29 09:38:18,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2023-08-29 09:38:18,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 09:38:18,171 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:38:18,172 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:38:18,172 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-29 09:38:18,193 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:38:18,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 150 transitions, 417 flow [2023-08-29 09:38:18,215 INFO L130 PetriNetUnfolder]: 10/256 cut-off events. [2023-08-29 09:38:18,215 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-29 09:38:18,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 256 events. 10/256 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 527 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 274. Up to 20 conditions per place. [2023-08-29 09:38:18,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 150 transitions, 417 flow [2023-08-29 09:38:18,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 150 transitions, 417 flow [2023-08-29 09:38:18,218 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:38:18,219 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 168 places, 150 transitions, 417 flow [2023-08-29 09:38:18,219 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 168 places, 150 transitions, 417 flow [2023-08-29 09:38:18,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 150 transitions, 417 flow [2023-08-29 09:38:18,238 INFO L130 PetriNetUnfolder]: 10/256 cut-off events. [2023-08-29 09:38:18,239 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-29 09:38:18,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 256 events. 10/256 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 527 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 274. Up to 20 conditions per place. [2023-08-29 09:38:18,245 INFO L119 LiptonReduction]: Number of co-enabled transitions 14040 [2023-08-29 09:38:20,120 INFO L134 LiptonReduction]: Checked pairs total: 24642 [2023-08-29 09:38:20,120 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-08-29 09:38:20,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:38:20,122 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;@53134988, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:38:20,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 09:38:20,122 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 09:38:20,123 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:38:20,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:38:20,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 09:38:20,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2023-08-29 09:38:20,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:38:20,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1867, now seen corresponding path program 1 times [2023-08-29 09:38:20,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:38:20,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794959252] [2023-08-29 09:38:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:38:20,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:38:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:38:20,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:38:20,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:38:20,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794959252] [2023-08-29 09:38:20,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794959252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:38:20,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:38:20,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 09:38:20,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175455423] [2023-08-29 09:38:20,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:38:20,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:38:20,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:38:20,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:38:20,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:38:20,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 277 [2023-08-29 09:38:20,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 52 transitions, 221 flow. Second operand has 2 states, 2 states have (on average 103.5) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:20,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:38:20,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 277 [2023-08-29 09:38:20,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:38:49,104 INFO L130 PetriNetUnfolder]: 314930/400221 cut-off events. [2023-08-29 09:38:49,104 INFO L131 PetriNetUnfolder]: For 609352/609352 co-relation queries the response was YES. [2023-08-29 09:38:50,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926753 conditions, 400221 events. 314930/400221 cut-off events. For 609352/609352 co-relation queries the response was YES. Maximal size of possible extension queue 11911. Compared 2454234 event pairs, 314930 based on Foata normal form. 0/390380 useless extension candidates. Maximal degree in co-relation 282670. Up to 373979 conditions per place. [2023-08-29 09:38:51,890 INFO L137 encePairwiseOnDemand]: 257/277 looper letters, 29 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-08-29 09:38:51,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 32 transitions, 239 flow [2023-08-29 09:38:51,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:38:51,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:38:51,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 255 transitions. [2023-08-29 09:38:51,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602888086642599 [2023-08-29 09:38:51,892 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 255 transitions. [2023-08-29 09:38:51,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 255 transitions. [2023-08-29 09:38:51,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:38:51,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 255 transitions. [2023-08-29 09:38:51,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 127.5) internal successors, (255), 2 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:51,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:51,895 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:51,895 INFO L175 Difference]: Start difference. First operand has 71 places, 52 transitions, 221 flow. Second operand 2 states and 255 transitions. [2023-08-29 09:38:51,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 32 transitions, 239 flow [2023-08-29 09:38:52,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 32 transitions, 167 flow, removed 36 selfloop flow, removed 0 redundant places. [2023-08-29 09:38:52,949 INFO L231 Difference]: Finished difference. Result has 52 places, 32 transitions, 109 flow [2023-08-29 09:38:52,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=109, PETRI_PLACES=52, PETRI_TRANSITIONS=32} [2023-08-29 09:38:52,950 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -19 predicate places. [2023-08-29 09:38:52,950 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 32 transitions, 109 flow [2023-08-29 09:38:52,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 103.5) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:52,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:38:52,950 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:38:52,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-29 09:38:52,951 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2023-08-29 09:38:52,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:38:52,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1600517784, now seen corresponding path program 1 times [2023-08-29 09:38:52,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:38:52,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986679058] [2023-08-29 09:38:52,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:38:52,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:38:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:38:52,973 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:38:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:38:52,990 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:38:52,990 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:38:52,990 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-29 09:38:52,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 09:38:52,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 09:38:52,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 09:38:52,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 09:38:52,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 09:38:52,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 09:38:52,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 09:38:52,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 09:38:52,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 09:38:52,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 09:38:52,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 09:38:52,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 09:38:52,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 09:38:52,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 09:38:52,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 09:38:52,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 09:38:52,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 09:38:52,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 09:38:52,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 09:38:52,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 09:38:52,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 09:38:52,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 09:38:52,994 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:38:52,994 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:38:52,994 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-29 09:38:53,016 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:38:53,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 163 transitions, 466 flow [2023-08-29 09:38:53,042 INFO L130 PetriNetUnfolder]: 11/281 cut-off events. [2023-08-29 09:38:53,042 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-29 09:38:53,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 281 events. 11/281 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 573 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 311. Up to 22 conditions per place. [2023-08-29 09:38:53,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 163 transitions, 466 flow [2023-08-29 09:38:53,046 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 163 transitions, 466 flow [2023-08-29 09:38:53,046 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:38:53,046 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 163 transitions, 466 flow [2023-08-29 09:38:53,046 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 163 transitions, 466 flow [2023-08-29 09:38:53,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 163 transitions, 466 flow [2023-08-29 09:38:53,069 INFO L130 PetriNetUnfolder]: 11/281 cut-off events. [2023-08-29 09:38:53,070 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-29 09:38:53,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 281 events. 11/281 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 573 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 311. Up to 22 conditions per place. [2023-08-29 09:38:53,077 INFO L119 LiptonReduction]: Number of co-enabled transitions 17160 [2023-08-29 09:38:54,917 INFO L134 LiptonReduction]: Checked pairs total: 29777 [2023-08-29 09:38:54,918 INFO L136 LiptonReduction]: Total number of compositions: 138 [2023-08-29 09:38:54,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:38:54,920 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;@53134988, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:38:54,920 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-29 09:38:54,920 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 09:38:54,921 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:38:54,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:38:54,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 09:38:54,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-29 09:38:54,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:38:54,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2180, now seen corresponding path program 1 times [2023-08-29 09:38:54,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:38:54,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935240621] [2023-08-29 09:38:54,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:38:54,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:38:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:38:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:38:54,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:38:54,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935240621] [2023-08-29 09:38:54,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935240621] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:38:54,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:38:54,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 09:38:54,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588417460] [2023-08-29 09:38:54,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:38:54,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:38:54,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:38:54,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:38:54,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:38:54,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 301 [2023-08-29 09:38:54,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 57 transitions, 254 flow. Second operand has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:38:54,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:38:54,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 301 [2023-08-29 09:38:54,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand