./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.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 cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 02:47:51,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 02:47:51,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 02:47:51,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 02:47:51,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 02:47:51,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 02:47:51,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 02:47:51,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 02:47:51,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 02:47:51,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 02:47:51,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 02:47:51,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 02:47:51,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 02:47:51,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 02:47:51,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 02:47:51,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 02:47:51,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 02:47:51,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 02:47:51,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 02:47:51,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 02:47:51,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 02:47:51,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 02:47:51,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 02:47:51,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 02:47:51,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 02:47:51,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 02:47:51,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 02:47:51,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 02:47:51,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 02:47:51,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 02:47:51,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 02:47:51,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 02:47:51,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 02:47:51,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 02:47:51,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 02:47:51,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 02:47:51,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 02:47:51,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 02:47:51,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 02:47:51,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 02:47:51,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 02:47:51,670 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 02:47:51,710 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 02:47:51,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 02:47:51,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 02:47:51,712 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 02:47:51,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 02:47:51,713 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 02:47:51,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 02:47:51,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 02:47:51,714 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 02:47:51,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 02:47:51,715 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 02:47:51,715 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 02:47:51,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 02:47:51,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 02:47:51,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 02:47:51,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 02:47:51,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 02:47:51,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 02:47:51,716 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 02:47:51,716 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 02:47:51,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 02:47:51,717 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 02:47:51,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 02:47:51,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 02:47:51,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 02:47:51,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 02:47:51,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:47:51,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 02:47:51,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 02:47:51,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 02:47:51,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 02:47:51,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 02:47:51,719 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 02:47:51,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 02:47:51,720 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 02:47:51,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 02:47:51,720 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 02:47:51,720 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 02:47:52,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 02:47:52,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 02:47:52,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 02:47:52,063 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 02:47:52,063 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 02:47:52,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-08-29 02:47:53,373 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 02:47:53,691 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 02:47:53,691 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i [2023-08-29 02:47:53,712 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/344d960ec/7a87bc70e6c74852a6eee8342cb3251c/FLAG168cd0d9a [2023-08-29 02:47:53,731 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/344d960ec/7a87bc70e6c74852a6eee8342cb3251c [2023-08-29 02:47:53,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 02:47:53,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 02:47:53,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 02:47:53,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 02:47:53,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 02:47:53,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:47:53" (1/1) ... [2023-08-29 02:47:53,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30fb9b54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:53, skipping insertion in model container [2023-08-29 02:47:53,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:47:53" (1/1) ... [2023-08-29 02:47:53,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 02:47:53,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 02:47:54,140 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i[30176,30189] [2023-08-29 02:47:54,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:47:54,193 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 02:47:54,231 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i[30176,30189] [2023-08-29 02:47:54,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:47:54,334 INFO L208 MainTranslator]: Completed translation [2023-08-29 02:47:54,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:54 WrapperNode [2023-08-29 02:47:54,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 02:47:54,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 02:47:54,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 02:47:54,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 02:47:54,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:54" (1/1) ... [2023-08-29 02:47:54,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:54" (1/1) ... [2023-08-29 02:47:54,374 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2023-08-29 02:47:54,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 02:47:54,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 02:47:54,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 02:47:54,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 02:47:54,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:54" (1/1) ... [2023-08-29 02:47:54,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:54" (1/1) ... [2023-08-29 02:47:54,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:54" (1/1) ... [2023-08-29 02:47:54,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:54" (1/1) ... [2023-08-29 02:47:54,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:54" (1/1) ... [2023-08-29 02:47:54,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:54" (1/1) ... [2023-08-29 02:47:54,425 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:54" (1/1) ... [2023-08-29 02:47:54,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:54" (1/1) ... [2023-08-29 02:47:54,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 02:47:54,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 02:47:54,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 02:47:54,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 02:47:54,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:54" (1/1) ... [2023-08-29 02:47:54,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:47:54,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:47:54,474 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 02:47:54,502 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 02:47:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 02:47:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 02:47:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 02:47:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 02:47:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 02:47:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 02:47:54,521 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 02:47:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 02:47:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 02:47:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 02:47:54,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 02:47:54,523 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 02:47:54,629 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 02:47:54,631 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 02:47:54,957 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 02:47:54,965 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 02:47:54,965 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-29 02:47:54,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:47:54 BoogieIcfgContainer [2023-08-29 02:47:54,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 02:47:54,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 02:47:54,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 02:47:54,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 02:47:54,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 02:47:53" (1/3) ... [2023-08-29 02:47:54,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ac109f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:47:54, skipping insertion in model container [2023-08-29 02:47:54,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:47:54" (2/3) ... [2023-08-29 02:47:54,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ac109f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:47:54, skipping insertion in model container [2023-08-29 02:47:54,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:47:54" (3/3) ... [2023-08-29 02:47:54,983 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_21-deref_read_racing.i [2023-08-29 02:47:54,991 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 02:47:55,000 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 02:47:55,001 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-29 02:47:55,001 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 02:47:55,074 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 02:47:55,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 147 transitions, 299 flow [2023-08-29 02:47:55,170 INFO L130 PetriNetUnfolder]: 14/191 cut-off events. [2023-08-29 02:47:55,170 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:47:55,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 191 events. 14/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 528 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2023-08-29 02:47:55,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 147 transitions, 299 flow [2023-08-29 02:47:55,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 147 transitions, 299 flow [2023-08-29 02:47:55,189 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:47:55,198 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 147 transitions, 299 flow [2023-08-29 02:47:55,201 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 147 transitions, 299 flow [2023-08-29 02:47:55,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 147 transitions, 299 flow [2023-08-29 02:47:55,244 INFO L130 PetriNetUnfolder]: 14/191 cut-off events. [2023-08-29 02:47:55,245 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:47:55,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 191 events. 14/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 528 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2023-08-29 02:47:55,255 INFO L119 LiptonReduction]: Number of co-enabled transitions 6600 [2023-08-29 02:47:58,069 INFO L134 LiptonReduction]: Checked pairs total: 25247 [2023-08-29 02:47:58,070 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-29 02:47:58,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:47:58,090 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;@584a55fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:47:58,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-29 02:47:58,093 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-08-29 02:47:58,093 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:47:58,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:47:58,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 02:47:58,094 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:47:58,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:47:58,108 INFO L85 PathProgramCache]: Analyzing trace with hash 17017, now seen corresponding path program 1 times [2023-08-29 02:47:58,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:47:58,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410819174] [2023-08-29 02:47:58,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:47:58,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:47:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:47:58,249 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 02:47:58,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:47:58,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410819174] [2023-08-29 02:47:58,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410819174] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:47:58,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:47:58,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 02:47:58,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324347783] [2023-08-29 02:47:58,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:47:58,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 02:47:58,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:47:58,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 02:47:58,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 02:47:58,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 245 [2023-08-29 02:47:58,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 68 transitions, 141 flow. Second operand has 2 states, 2 states have (on average 136.0) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:47:58,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:47:58,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 245 [2023-08-29 02:47:58,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:47:58,370 INFO L130 PetriNetUnfolder]: 84/389 cut-off events. [2023-08-29 02:47:58,376 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:47:58,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 389 events. 84/389 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1779 event pairs, 84 based on Foata normal form. 8/366 useless extension candidates. Maximal degree in co-relation 557. Up to 196 conditions per place. [2023-08-29 02:47:58,381 INFO L137 encePairwiseOnDemand]: 235/245 looper letters, 21 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2023-08-29 02:47:58,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 163 flow [2023-08-29 02:47:58,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 02:47:58,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 02:47:58,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 301 transitions. [2023-08-29 02:47:58,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2023-08-29 02:47:58,403 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 301 transitions. [2023-08-29 02:47:58,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 301 transitions. [2023-08-29 02:47:58,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:47:58,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 301 transitions. [2023-08-29 02:47:58,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 150.5) internal successors, (301), 2 states have internal predecessors, (301), 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 02:47:58,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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 02:47:58,420 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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 02:47:58,422 INFO L175 Difference]: Start difference. First operand has 63 places, 68 transitions, 141 flow. Second operand 2 states and 301 transitions. [2023-08-29 02:47:58,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 163 flow [2023-08-29 02:47:58,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 163 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:47:58,428 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 121 flow [2023-08-29 02:47:58,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=121, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2023-08-29 02:47:58,436 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2023-08-29 02:47:58,436 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 121 flow [2023-08-29 02:47:58,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 136.0) internal successors, (272), 2 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:47:58,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:47:58,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 02:47:58,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 02:47:58,438 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:47:58,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:47:58,440 INFO L85 PathProgramCache]: Analyzing trace with hash 526576, now seen corresponding path program 1 times [2023-08-29 02:47:58,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:47:58,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868639278] [2023-08-29 02:47:58,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:47:58,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:47:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:47:58,547 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 02:47:58,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:47:58,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868639278] [2023-08-29 02:47:58,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868639278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:47:58,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:47:58,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:47:58,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474196054] [2023-08-29 02:47:58,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:47:58,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:47:58,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:47:58,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:47:58,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:47:58,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 245 [2023-08-29 02:47:58,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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 02:47:58,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:47:58,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 245 [2023-08-29 02:47:58,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:47:58,677 INFO L130 PetriNetUnfolder]: 84/403 cut-off events. [2023-08-29 02:47:58,678 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:47:58,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601 conditions, 403 events. 84/403 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1853 event pairs, 66 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 597. Up to 176 conditions per place. [2023-08-29 02:47:58,683 INFO L137 encePairwiseOnDemand]: 242/245 looper letters, 32 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-29 02:47:58,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 71 transitions, 215 flow [2023-08-29 02:47:58,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:47:58,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:47:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-08-29 02:47:58,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.582312925170068 [2023-08-29 02:47:58,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-08-29 02:47:58,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-08-29 02:47:58,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:47:58,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-08-29 02:47:58,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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 02:47:58,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 02:47:58,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 02:47:58,692 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 121 flow. Second operand 3 states and 428 transitions. [2023-08-29 02:47:58,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 71 transitions, 215 flow [2023-08-29 02:47:58,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 71 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:47:58,695 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 129 flow [2023-08-29 02:47:58,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2023-08-29 02:47:58,696 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 2 predicate places. [2023-08-29 02:47:58,696 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 129 flow [2023-08-29 02:47:58,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 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 02:47:58,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:47:58,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 02:47:58,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 02:47:58,698 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:47:58,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:47:58,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1471188334, now seen corresponding path program 1 times [2023-08-29 02:47:58,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:47:58,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198515204] [2023-08-29 02:47:58,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:47:58,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:47:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:47:58,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:47:58,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:47:58,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198515204] [2023-08-29 02:47:58,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198515204] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:47:58,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612051545] [2023-08-29 02:47:58,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:47:58,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:47:58,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:47:58,791 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:47:58,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 02:47:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:47:58,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:47:58,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:47:58,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:47:58,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:47:58,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612051545] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:47:58,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:47:58,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-29 02:47:58,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943878493] [2023-08-29 02:47:58,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:47:58,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:47:58,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:47:58,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:47:58,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 02:47:58,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 245 [2023-08-29 02:47:58,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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 02:47:58,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:47:58,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 245 [2023-08-29 02:47:58,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:47:59,015 INFO L130 PetriNetUnfolder]: 112/441 cut-off events. [2023-08-29 02:47:59,016 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-29 02:47:59,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 441 events. 112/441 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1963 event pairs, 60 based on Foata normal form. 0/431 useless extension candidates. Maximal degree in co-relation 746. Up to 235 conditions per place. [2023-08-29 02:47:59,018 INFO L137 encePairwiseOnDemand]: 240/245 looper letters, 29 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-29 02:47:59,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 202 flow [2023-08-29 02:47:59,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:47:59,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:47:59,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 412 transitions. [2023-08-29 02:47:59,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5605442176870749 [2023-08-29 02:47:59,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 412 transitions. [2023-08-29 02:47:59,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 412 transitions. [2023-08-29 02:47:59,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:47:59,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 412 transitions. [2023-08-29 02:47:59,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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 02:47:59,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 02:47:59,024 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 02:47:59,024 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 129 flow. Second operand 3 states and 412 transitions. [2023-08-29 02:47:59,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 202 flow [2023-08-29 02:47:59,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:47:59,026 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 135 flow [2023-08-29 02:47:59,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-29 02:47:59,027 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2023-08-29 02:47:59,028 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 135 flow [2023-08-29 02:47:59,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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 02:47:59,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:47:59,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:47:59,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 02:47:59,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:47:59,234 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:47:59,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:47:59,235 INFO L85 PathProgramCache]: Analyzing trace with hash -319275676, now seen corresponding path program 1 times [2023-08-29 02:47:59,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:47:59,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629031813] [2023-08-29 02:47:59,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:47:59,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:47:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:47:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:47:59,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:47:59,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629031813] [2023-08-29 02:47:59,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629031813] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:47:59,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926531871] [2023-08-29 02:47:59,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:47:59,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:47:59,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:47:59,341 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:47:59,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 02:47:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:47:59,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:47:59,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:47:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:47:59,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:47:59,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:47:59,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926531871] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:47:59,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:47:59,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:47:59,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570817104] [2023-08-29 02:47:59,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:47:59,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:47:59,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:47:59,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:47:59,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:47:59,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 245 [2023-08-29 02:47:59,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 135 flow. Second operand has 7 states, 7 states have (on average 132.28571428571428) internal successors, (926), 7 states have internal predecessors, (926), 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 02:47:59,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:47:59,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 245 [2023-08-29 02:47:59,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:47:59,583 INFO L130 PetriNetUnfolder]: 24/105 cut-off events. [2023-08-29 02:47:59,584 INFO L131 PetriNetUnfolder]: For 3/4 co-relation queries the response was YES. [2023-08-29 02:47:59,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 105 events. 24/105 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 188 event pairs, 0 based on Foata normal form. 15/115 useless extension candidates. Maximal degree in co-relation 200. Up to 50 conditions per place. [2023-08-29 02:47:59,584 INFO L137 encePairwiseOnDemand]: 242/245 looper letters, 21 selfloop transitions, 2 changer transitions 6/57 dead transitions. [2023-08-29 02:47:59,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 182 flow [2023-08-29 02:47:59,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:47:59,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:47:59,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 550 transitions. [2023-08-29 02:47:59,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5612244897959183 [2023-08-29 02:47:59,587 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 550 transitions. [2023-08-29 02:47:59,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 550 transitions. [2023-08-29 02:47:59,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:47:59,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 550 transitions. [2023-08-29 02:47:59,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 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 02:47:59,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 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 02:47:59,592 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 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 02:47:59,592 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 135 flow. Second operand 4 states and 550 transitions. [2023-08-29 02:47:59,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 182 flow [2023-08-29 02:47:59,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 57 transitions, 179 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:47:59,593 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 93 flow [2023-08-29 02:47:59,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-08-29 02:47:59,594 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -10 predicate places. [2023-08-29 02:47:59,595 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 93 flow [2023-08-29 02:47:59,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 132.28571428571428) internal successors, (926), 7 states have internal predecessors, (926), 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 02:47:59,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:47:59,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:47:59,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 02:47:59,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-29 02:47:59,802 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:47:59,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:47:59,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1424437757, now seen corresponding path program 1 times [2023-08-29 02:47:59,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:47:59,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642254499] [2023-08-29 02:47:59,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:47:59,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:47:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:00,075 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 02:48:00,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:00,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642254499] [2023-08-29 02:48:00,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642254499] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:00,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:00,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:48:00,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882669259] [2023-08-29 02:48:00,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:00,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:48:00,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:00,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:48:00,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:48:00,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 245 [2023-08-29 02:48:00,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 93 flow. Second operand has 6 states, 6 states have (on average 113.66666666666667) internal successors, (682), 6 states have internal predecessors, (682), 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 02:48:00,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:00,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 245 [2023-08-29 02:48:00,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:00,271 INFO L130 PetriNetUnfolder]: 50/153 cut-off events. [2023-08-29 02:48:00,272 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-29 02:48:00,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 153 events. 50/153 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 268 event pairs, 26 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 318. Up to 71 conditions per place. [2023-08-29 02:48:00,273 INFO L137 encePairwiseOnDemand]: 233/245 looper letters, 27 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2023-08-29 02:48:00,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 187 flow [2023-08-29 02:48:00,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:48:00,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:48:00,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 711 transitions. [2023-08-29 02:48:00,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48367346938775513 [2023-08-29 02:48:00,277 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 711 transitions. [2023-08-29 02:48:00,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 711 transitions. [2023-08-29 02:48:00,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:00,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 711 transitions. [2023-08-29 02:48:00,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.5) internal successors, (711), 6 states have internal predecessors, (711), 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 02:48:00,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 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 02:48:00,283 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 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 02:48:00,283 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 93 flow. Second operand 6 states and 711 transitions. [2023-08-29 02:48:00,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 187 flow [2023-08-29 02:48:00,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:48:00,285 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 106 flow [2023-08-29 02:48:00,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=106, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2023-08-29 02:48:00,286 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -12 predicate places. [2023-08-29 02:48:00,286 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 106 flow [2023-08-29 02:48:00,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.66666666666667) internal successors, (682), 6 states have internal predecessors, (682), 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 02:48:00,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:00,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:00,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 02:48:00,287 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:48:00,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:00,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1556453746, now seen corresponding path program 1 times [2023-08-29 02:48:00,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:00,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700200134] [2023-08-29 02:48:00,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:00,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:00,560 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 02:48:00,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:00,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700200134] [2023-08-29 02:48:00,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700200134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:00,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:00,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:48:00,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665986084] [2023-08-29 02:48:00,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:00,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:48:00,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:00,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:48:00,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:48:00,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 245 [2023-08-29 02:48:00,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 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 02:48:00,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:00,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 245 [2023-08-29 02:48:00,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:00,737 INFO L130 PetriNetUnfolder]: 50/150 cut-off events. [2023-08-29 02:48:00,737 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 02:48:00,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 150 events. 50/150 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 252 event pairs, 42 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 344. Up to 111 conditions per place. [2023-08-29 02:48:00,738 INFO L137 encePairwiseOnDemand]: 239/245 looper letters, 32 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2023-08-29 02:48:00,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 46 transitions, 198 flow [2023-08-29 02:48:00,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:48:00,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:48:00,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 680 transitions. [2023-08-29 02:48:00,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46258503401360546 [2023-08-29 02:48:00,741 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 680 transitions. [2023-08-29 02:48:00,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 680 transitions. [2023-08-29 02:48:00,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:00,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 680 transitions. [2023-08-29 02:48:00,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 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 02:48:00,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 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 02:48:00,746 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 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 02:48:00,746 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 106 flow. Second operand 6 states and 680 transitions. [2023-08-29 02:48:00,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 46 transitions, 198 flow [2023-08-29 02:48:00,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 178 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 02:48:00,748 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 94 flow [2023-08-29 02:48:00,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2023-08-29 02:48:00,749 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -13 predicate places. [2023-08-29 02:48:00,749 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 94 flow [2023-08-29 02:48:00,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 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 02:48:00,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:00,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:00,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 02:48:00,750 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:48:00,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:00,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1347689385, now seen corresponding path program 1 times [2023-08-29 02:48:00,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:00,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700901158] [2023-08-29 02:48:00,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:00,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:01,123 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 02:48:01,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:01,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700901158] [2023-08-29 02:48:01,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700901158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:01,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:01,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:48:01,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282785647] [2023-08-29 02:48:01,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:01,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:48:01,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:01,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:48:01,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:48:01,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 245 [2023-08-29 02:48:01,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 94 flow. Second operand has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 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 02:48:01,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:01,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 245 [2023-08-29 02:48:01,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:01,301 INFO L130 PetriNetUnfolder]: 50/147 cut-off events. [2023-08-29 02:48:01,301 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:48:01,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 147 events. 50/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 244 event pairs, 42 based on Foata normal form. 3/147 useless extension candidates. Maximal degree in co-relation 326. Up to 111 conditions per place. [2023-08-29 02:48:01,302 INFO L137 encePairwiseOnDemand]: 240/245 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2023-08-29 02:48:01,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 186 flow [2023-08-29 02:48:01,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:48:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:48:01,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 680 transitions. [2023-08-29 02:48:01,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46258503401360546 [2023-08-29 02:48:01,305 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 680 transitions. [2023-08-29 02:48:01,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 680 transitions. [2023-08-29 02:48:01,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:01,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 680 transitions. [2023-08-29 02:48:01,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 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 02:48:01,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 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 02:48:01,310 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 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 02:48:01,310 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 94 flow. Second operand 6 states and 680 transitions. [2023-08-29 02:48:01,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 186 flow [2023-08-29 02:48:01,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 176 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 02:48:01,312 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2023-08-29 02:48:01,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2023-08-29 02:48:01,313 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -14 predicate places. [2023-08-29 02:48:01,313 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2023-08-29 02:48:01,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 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 02:48:01,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 16 remaining) [2023-08-29 02:48:01,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-08-29 02:48:01,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-08-29 02:48:01,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2023-08-29 02:48:01,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-08-29 02:48:01,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-08-29 02:48:01,319 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-08-29 02:48:01,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-08-29 02:48:01,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-08-29 02:48:01,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-08-29 02:48:01,322 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-08-29 02:48:01,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-08-29 02:48:01,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-08-29 02:48:01,323 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-08-29 02:48:01,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-08-29 02:48:01,324 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-08-29 02:48:01,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 02:48:01,325 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:01,327 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 02:48:01,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 147 transitions, 299 flow [2023-08-29 02:48:01,353 INFO L130 PetriNetUnfolder]: 14/191 cut-off events. [2023-08-29 02:48:01,354 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:48:01,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 191 events. 14/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 528 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2023-08-29 02:48:01,355 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 147 transitions, 299 flow [2023-08-29 02:48:01,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 147 transitions, 299 flow [2023-08-29 02:48:01,356 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:48:01,356 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 147 transitions, 299 flow [2023-08-29 02:48:01,357 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 147 transitions, 299 flow [2023-08-29 02:48:01,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 147 transitions, 299 flow [2023-08-29 02:48:01,372 INFO L130 PetriNetUnfolder]: 14/191 cut-off events. [2023-08-29 02:48:01,373 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:48:01,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 191 events. 14/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 528 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2023-08-29 02:48:01,376 INFO L119 LiptonReduction]: Number of co-enabled transitions 6600 [2023-08-29 02:48:03,893 INFO L134 LiptonReduction]: Checked pairs total: 25400 [2023-08-29 02:48:03,894 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-29 02:48:03,895 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:48:03,896 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;@584a55fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:48:03,896 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 02:48:03,907 INFO L130 PetriNetUnfolder]: 0/23 cut-off events. [2023-08-29 02:48:03,908 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:48:03,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:03,908 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 02:48:03,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:48:03,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:03,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1425994993, now seen corresponding path program 1 times [2023-08-29 02:48:03,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:03,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306511818] [2023-08-29 02:48:03,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:03,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:48:03,920 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:48:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:48:03,939 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:48:03,940 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:48:03,940 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 02:48:03,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 02:48:03,940 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:48:03,941 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 02:48:03,942 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:48:03,942 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 02:48:03,963 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 02:48:03,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 214 transitions, 440 flow [2023-08-29 02:48:03,997 INFO L130 PetriNetUnfolder]: 24/307 cut-off events. [2023-08-29 02:48:03,997 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 02:48:04,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 307 events. 24/307 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1129 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 192. Up to 6 conditions per place. [2023-08-29 02:48:04,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 214 transitions, 440 flow [2023-08-29 02:48:04,003 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 214 transitions, 440 flow [2023-08-29 02:48:04,003 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:48:04,003 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 214 transitions, 440 flow [2023-08-29 02:48:04,003 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 214 transitions, 440 flow [2023-08-29 02:48:04,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 214 transitions, 440 flow [2023-08-29 02:48:04,034 INFO L130 PetriNetUnfolder]: 24/307 cut-off events. [2023-08-29 02:48:04,034 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 02:48:04,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 307 events. 24/307 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1129 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 192. Up to 6 conditions per place. [2023-08-29 02:48:04,049 INFO L119 LiptonReduction]: Number of co-enabled transitions 22044 [2023-08-29 02:48:06,668 INFO L134 LiptonReduction]: Checked pairs total: 105750 [2023-08-29 02:48:06,668 INFO L136 LiptonReduction]: Total number of compositions: 123 [2023-08-29 02:48:06,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:48:06,670 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;@584a55fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:48:06,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 02:48:06,672 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-08-29 02:48:06,672 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:48:06,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:06,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 02:48:06,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:06,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:06,673 INFO L85 PathProgramCache]: Analyzing trace with hash 33080, now seen corresponding path program 1 times [2023-08-29 02:48:06,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:06,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760985751] [2023-08-29 02:48:06,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:06,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:06,687 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 02:48:06,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:06,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760985751] [2023-08-29 02:48:06,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760985751] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:06,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:06,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 02:48:06,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116674968] [2023-08-29 02:48:06,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:06,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 02:48:06,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:06,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 02:48:06,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 02:48:06,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 337 [2023-08-29 02:48:06,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 117 transitions, 246 flow. Second operand has 2 states, 2 states have (on average 196.0) internal successors, (392), 2 states have internal predecessors, (392), 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 02:48:06,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:06,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 337 [2023-08-29 02:48:06,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:07,473 INFO L130 PetriNetUnfolder]: 2748/7493 cut-off events. [2023-08-29 02:48:07,474 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-08-29 02:48:07,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11940 conditions, 7493 events. 2748/7493 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 66834 event pairs, 2748 based on Foata normal form. 611/7495 useless extension candidates. Maximal degree in co-relation 8421. Up to 4395 conditions per place. [2023-08-29 02:48:07,521 INFO L137 encePairwiseOnDemand]: 321/337 looper letters, 35 selfloop transitions, 0 changer transitions 0/101 dead transitions. [2023-08-29 02:48:07,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 284 flow [2023-08-29 02:48:07,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 02:48:07,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 02:48:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 441 transitions. [2023-08-29 02:48:07,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6543026706231454 [2023-08-29 02:48:07,524 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 441 transitions. [2023-08-29 02:48:07,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 441 transitions. [2023-08-29 02:48:07,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:07,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 441 transitions. [2023-08-29 02:48:07,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 220.5) internal successors, (441), 2 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:48:07,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 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 02:48:07,527 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 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 02:48:07,527 INFO L175 Difference]: Start difference. First operand has 108 places, 117 transitions, 246 flow. Second operand 2 states and 441 transitions. [2023-08-29 02:48:07,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 284 flow [2023-08-29 02:48:07,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 101 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-29 02:48:07,531 INFO L231 Difference]: Finished difference. Result has 107 places, 101 transitions, 212 flow [2023-08-29 02:48:07,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=212, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2023-08-29 02:48:07,533 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -1 predicate places. [2023-08-29 02:48:07,533 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 212 flow [2023-08-29 02:48:07,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 196.0) internal successors, (392), 2 states have internal predecessors, (392), 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 02:48:07,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:07,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 02:48:07,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 02:48:07,535 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:07,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:07,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1024629, now seen corresponding path program 1 times [2023-08-29 02:48:07,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:07,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403127291] [2023-08-29 02:48:07,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:07,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:07,555 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 02:48:07,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:07,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403127291] [2023-08-29 02:48:07,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403127291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:07,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:07,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:48:07,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697079573] [2023-08-29 02:48:07,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:07,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:48:07,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:07,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:48:07,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:48:07,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 337 [2023-08-29 02:48:07,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 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 02:48:07,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:07,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 337 [2023-08-29 02:48:07,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:08,344 INFO L130 PetriNetUnfolder]: 2748/7616 cut-off events. [2023-08-29 02:48:08,345 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-29 02:48:08,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12063 conditions, 7616 events. 2748/7616 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 69435 event pairs, 1248 based on Foata normal form. 0/7079 useless extension candidates. Maximal degree in co-relation 12058. Up to 4374 conditions per place. [2023-08-29 02:48:08,419 INFO L137 encePairwiseOnDemand]: 334/337 looper letters, 47 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2023-08-29 02:48:08,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 115 transitions, 338 flow [2023-08-29 02:48:08,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:48:08,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:48:08,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2023-08-29 02:48:08,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6162215628090999 [2023-08-29 02:48:08,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2023-08-29 02:48:08,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2023-08-29 02:48:08,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:08,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2023-08-29 02:48:08,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 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 02:48:08,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 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 02:48:08,426 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 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 02:48:08,426 INFO L175 Difference]: Start difference. First operand has 107 places, 101 transitions, 212 flow. Second operand 3 states and 623 transitions. [2023-08-29 02:48:08,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 115 transitions, 338 flow [2023-08-29 02:48:08,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 115 transitions, 338 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:48:08,429 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 224 flow [2023-08-29 02:48:08,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2023-08-29 02:48:08,430 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 2 predicate places. [2023-08-29 02:48:08,430 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 224 flow [2023-08-29 02:48:08,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 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 02:48:08,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:08,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:08,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 02:48:08,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:08,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:08,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1702056704, now seen corresponding path program 1 times [2023-08-29 02:48:08,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:08,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868321005] [2023-08-29 02:48:08,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:08,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:08,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:08,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868321005] [2023-08-29 02:48:08,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868321005] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:48:08,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980584052] [2023-08-29 02:48:08,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:08,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:48:08,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:48:08,469 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:48:08,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 02:48:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:08,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:48:08,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:48:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:48:08,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:48:08,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980584052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:08,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:48:08,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-29 02:48:08,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660728328] [2023-08-29 02:48:08,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:08,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:48:08,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:08,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:48:08,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 02:48:08,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 337 [2023-08-29 02:48:08,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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 02:48:08,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:08,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 337 [2023-08-29 02:48:08,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:09,580 INFO L130 PetriNetUnfolder]: 3928/9668 cut-off events. [2023-08-29 02:48:09,581 INFO L131 PetriNetUnfolder]: For 550/550 co-relation queries the response was YES. [2023-08-29 02:48:09,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16475 conditions, 9668 events. 3928/9668 cut-off events. For 550/550 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 83911 event pairs, 2736 based on Foata normal form. 0/9399 useless extension candidates. Maximal degree in co-relation 16468. Up to 6180 conditions per place. [2023-08-29 02:48:09,632 INFO L137 encePairwiseOnDemand]: 329/337 looper letters, 48 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2023-08-29 02:48:09,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 107 transitions, 348 flow [2023-08-29 02:48:09,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:48:09,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:48:09,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2023-08-29 02:48:09,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5875370919881305 [2023-08-29 02:48:09,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2023-08-29 02:48:09,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2023-08-29 02:48:09,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:09,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2023-08-29 02:48:09,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 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 02:48:09,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 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 02:48:09,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 337.0) internal successors, (1348), 4 states have internal predecessors, (1348), 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 02:48:09,639 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 224 flow. Second operand 3 states and 594 transitions. [2023-08-29 02:48:09,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 107 transitions, 348 flow [2023-08-29 02:48:09,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 107 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 02:48:09,642 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 235 flow [2023-08-29 02:48:09,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2023-08-29 02:48:09,643 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -1 predicate places. [2023-08-29 02:48:09,643 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 235 flow [2023-08-29 02:48:09,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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 02:48:09,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:09,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:09,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 02:48:09,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:48:09,850 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:09,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:09,850 INFO L85 PathProgramCache]: Analyzing trace with hash -956209349, now seen corresponding path program 1 times [2023-08-29 02:48:09,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:09,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211199473] [2023-08-29 02:48:09,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:09,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:10,076 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 02:48:10,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:10,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211199473] [2023-08-29 02:48:10,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211199473] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:10,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:10,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:48:10,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228148959] [2023-08-29 02:48:10,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:10,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:48:10,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:10,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:48:10,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:48:10,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 337 [2023-08-29 02:48:10,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 151.66666666666666) internal successors, (910), 6 states have internal predecessors, (910), 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 02:48:10,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:10,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 337 [2023-08-29 02:48:10,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:13,833 INFO L130 PetriNetUnfolder]: 27074/45916 cut-off events. [2023-08-29 02:48:13,834 INFO L131 PetriNetUnfolder]: For 7084/7086 co-relation queries the response was YES. [2023-08-29 02:48:13,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93605 conditions, 45916 events. 27074/45916 cut-off events. For 7084/7086 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 366295 event pairs, 8274 based on Foata normal form. 0/44671 useless extension candidates. Maximal degree in co-relation 93598. Up to 17519 conditions per place. [2023-08-29 02:48:14,130 INFO L137 encePairwiseOnDemand]: 293/337 looper letters, 261 selfloop transitions, 84 changer transitions 0/372 dead transitions. [2023-08-29 02:48:14,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 372 transitions, 1529 flow [2023-08-29 02:48:14,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:48:14,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:48:14,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1242 transitions. [2023-08-29 02:48:14,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142433234421365 [2023-08-29 02:48:14,134 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1242 transitions. [2023-08-29 02:48:14,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1242 transitions. [2023-08-29 02:48:14,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:14,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1242 transitions. [2023-08-29 02:48:14,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.0) internal successors, (1242), 6 states have internal predecessors, (1242), 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 02:48:14,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 337.0) internal successors, (2359), 7 states have internal predecessors, (2359), 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 02:48:14,145 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 337.0) internal successors, (2359), 7 states have internal predecessors, (2359), 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 02:48:14,145 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 235 flow. Second operand 6 states and 1242 transitions. [2023-08-29 02:48:14,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 372 transitions, 1529 flow [2023-08-29 02:48:14,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 372 transitions, 1529 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:48:14,154 INFO L231 Difference]: Finished difference. Result has 117 places, 192 transitions, 867 flow [2023-08-29 02:48:14,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=867, PETRI_PLACES=117, PETRI_TRANSITIONS=192} [2023-08-29 02:48:14,157 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 9 predicate places. [2023-08-29 02:48:14,157 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 192 transitions, 867 flow [2023-08-29 02:48:14,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.66666666666666) internal successors, (910), 6 states have internal predecessors, (910), 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 02:48:14,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:14,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:14,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 02:48:14,158 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:14,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:14,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1486203743, now seen corresponding path program 1 times [2023-08-29 02:48:14,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:14,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993908566] [2023-08-29 02:48:14,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:14,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:14,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:14,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:14,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993908566] [2023-08-29 02:48:14,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993908566] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:48:14,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465336655] [2023-08-29 02:48:14,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:14,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:48:14,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:48:14,347 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:48:14,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 02:48:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:14,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:48:14,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:48:14,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:14,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:48:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:14,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465336655] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:48:14,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:48:14,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:48:14,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932779858] [2023-08-29 02:48:14,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:48:14,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:48:14,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:14,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:48:14,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:48:14,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 337 [2023-08-29 02:48:14,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 192 transitions, 867 flow. Second operand has 7 states, 7 states have (on average 192.42857142857142) internal successors, (1347), 7 states have internal predecessors, (1347), 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 02:48:14,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:14,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 337 [2023-08-29 02:48:14,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:15,224 INFO L130 PetriNetUnfolder]: 3292/8636 cut-off events. [2023-08-29 02:48:15,224 INFO L131 PetriNetUnfolder]: For 5643/5975 co-relation queries the response was YES. [2023-08-29 02:48:15,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21067 conditions, 8636 events. 3292/8636 cut-off events. For 5643/5975 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 76181 event pairs, 1084 based on Foata normal form. 604/8928 useless extension candidates. Maximal degree in co-relation 21055. Up to 3039 conditions per place. [2023-08-29 02:48:15,430 INFO L137 encePairwiseOnDemand]: 334/337 looper letters, 139 selfloop transitions, 3 changer transitions 0/255 dead transitions. [2023-08-29 02:48:15,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 255 transitions, 1440 flow [2023-08-29 02:48:15,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 02:48:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 02:48:15,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1020 transitions. [2023-08-29 02:48:15,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6053412462908012 [2023-08-29 02:48:15,434 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1020 transitions. [2023-08-29 02:48:15,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1020 transitions. [2023-08-29 02:48:15,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:15,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1020 transitions. [2023-08-29 02:48:15,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.0) internal successors, (1020), 5 states have internal predecessors, (1020), 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 02:48:15,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 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 02:48:15,441 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 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 02:48:15,441 INFO L175 Difference]: Start difference. First operand has 117 places, 192 transitions, 867 flow. Second operand 5 states and 1020 transitions. [2023-08-29 02:48:15,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 255 transitions, 1440 flow [2023-08-29 02:48:15,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 255 transitions, 1440 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:48:15,451 INFO L231 Difference]: Finished difference. Result has 110 places, 180 transitions, 840 flow [2023-08-29 02:48:15,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=840, PETRI_PLACES=110, PETRI_TRANSITIONS=180} [2023-08-29 02:48:15,452 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 2 predicate places. [2023-08-29 02:48:15,452 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 180 transitions, 840 flow [2023-08-29 02:48:15,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 192.42857142857142) internal successors, (1347), 7 states have internal predecessors, (1347), 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 02:48:15,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:15,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:15,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 02:48:15,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:48:15,659 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:15,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:15,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1833342643, now seen corresponding path program 1 times [2023-08-29 02:48:15,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:15,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146934144] [2023-08-29 02:48:15,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:15,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:15,855 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 02:48:15,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:15,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146934144] [2023-08-29 02:48:15,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146934144] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:15,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:15,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:48:15,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030261617] [2023-08-29 02:48:15,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:15,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:48:15,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:15,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:48:15,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:48:16,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 337 [2023-08-29 02:48:16,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 180 transitions, 840 flow. Second operand has 6 states, 6 states have (on average 149.66666666666666) internal successors, (898), 6 states have internal predecessors, (898), 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 02:48:16,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:16,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 337 [2023-08-29 02:48:16,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:17,621 INFO L130 PetriNetUnfolder]: 8653/15594 cut-off events. [2023-08-29 02:48:17,621 INFO L131 PetriNetUnfolder]: For 12415/12577 co-relation queries the response was YES. [2023-08-29 02:48:17,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45523 conditions, 15594 events. 8653/15594 cut-off events. For 12415/12577 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 112046 event pairs, 5089 based on Foata normal form. 144/15680 useless extension candidates. Maximal degree in co-relation 45510. Up to 12190 conditions per place. [2023-08-29 02:48:17,748 INFO L137 encePairwiseOnDemand]: 311/337 looper letters, 234 selfloop transitions, 76 changer transitions 0/335 dead transitions. [2023-08-29 02:48:17,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 335 transitions, 2120 flow [2023-08-29 02:48:17,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:48:17,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:48:17,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1080 transitions. [2023-08-29 02:48:17,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5341246290801187 [2023-08-29 02:48:17,752 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1080 transitions. [2023-08-29 02:48:17,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1080 transitions. [2023-08-29 02:48:17,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:17,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1080 transitions. [2023-08-29 02:48:17,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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 02:48:17,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 337.0) internal successors, (2359), 7 states have internal predecessors, (2359), 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 02:48:17,759 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 337.0) internal successors, (2359), 7 states have internal predecessors, (2359), 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 02:48:17,760 INFO L175 Difference]: Start difference. First operand has 110 places, 180 transitions, 840 flow. Second operand 6 states and 1080 transitions. [2023-08-29 02:48:17,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 335 transitions, 2120 flow [2023-08-29 02:48:17,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 335 transitions, 2097 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-29 02:48:17,773 INFO L231 Difference]: Finished difference. Result has 116 places, 259 transitions, 1578 flow [2023-08-29 02:48:17,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1578, PETRI_PLACES=116, PETRI_TRANSITIONS=259} [2023-08-29 02:48:17,774 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 8 predicate places. [2023-08-29 02:48:17,774 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 259 transitions, 1578 flow [2023-08-29 02:48:17,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.66666666666666) internal successors, (898), 6 states have internal predecessors, (898), 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 02:48:17,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:17,775 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:17,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 02:48:17,776 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:17,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:17,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1727036827, now seen corresponding path program 1 times [2023-08-29 02:48:17,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:17,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708711023] [2023-08-29 02:48:17,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:17,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:18,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 02:48:18,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:18,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708711023] [2023-08-29 02:48:18,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708711023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:18,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:18,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:48:18,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324667645] [2023-08-29 02:48:18,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:18,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:48:18,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:18,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:48:18,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:48:18,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 337 [2023-08-29 02:48:18,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 259 transitions, 1578 flow. Second operand has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 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 02:48:18,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:18,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 337 [2023-08-29 02:48:18,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:20,189 INFO L130 PetriNetUnfolder]: 9948/17747 cut-off events. [2023-08-29 02:48:20,190 INFO L131 PetriNetUnfolder]: For 19510/19720 co-relation queries the response was YES. [2023-08-29 02:48:20,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56049 conditions, 17747 events. 9948/17747 cut-off events. For 19510/19720 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 129513 event pairs, 5295 based on Foata normal form. 159/17842 useless extension candidates. Maximal degree in co-relation 56033. Up to 13233 conditions per place. [2023-08-29 02:48:20,371 INFO L137 encePairwiseOnDemand]: 310/337 looper letters, 300 selfloop transitions, 101 changer transitions 0/426 dead transitions. [2023-08-29 02:48:20,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 426 transitions, 3152 flow [2023-08-29 02:48:20,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:48:20,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:48:20,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1084 transitions. [2023-08-29 02:48:20,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361028684470821 [2023-08-29 02:48:20,378 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1084 transitions. [2023-08-29 02:48:20,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1084 transitions. [2023-08-29 02:48:20,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:20,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1084 transitions. [2023-08-29 02:48:20,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 180.66666666666666) internal successors, (1084), 6 states have internal predecessors, (1084), 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 02:48:20,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 337.0) internal successors, (2359), 7 states have internal predecessors, (2359), 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 02:48:20,387 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 337.0) internal successors, (2359), 7 states have internal predecessors, (2359), 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 02:48:20,387 INFO L175 Difference]: Start difference. First operand has 116 places, 259 transitions, 1578 flow. Second operand 6 states and 1084 transitions. [2023-08-29 02:48:20,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 426 transitions, 3152 flow [2023-08-29 02:48:20,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 426 transitions, 3092 flow, removed 30 selfloop flow, removed 0 redundant places. [2023-08-29 02:48:20,460 INFO L231 Difference]: Finished difference. Result has 126 places, 354 transitions, 2544 flow [2023-08-29 02:48:20,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2544, PETRI_PLACES=126, PETRI_TRANSITIONS=354} [2023-08-29 02:48:20,461 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 18 predicate places. [2023-08-29 02:48:20,461 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 354 transitions, 2544 flow [2023-08-29 02:48:20,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 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 02:48:20,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:20,463 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:20,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 02:48:20,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:20,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:20,463 INFO L85 PathProgramCache]: Analyzing trace with hash 689921633, now seen corresponding path program 1 times [2023-08-29 02:48:20,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:20,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544719425] [2023-08-29 02:48:20,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:20,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:48:20,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:20,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544719425] [2023-08-29 02:48:20,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544719425] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:48:20,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101702126] [2023-08-29 02:48:20,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:20,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:48:20,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:48:20,572 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:48:20,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 02:48:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:20,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-29 02:48:20,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:48:20,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-29 02:48:20,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:48:20,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-29 02:48:20,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:48:20,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:48:20,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101702126] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:20,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:48:20,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-08-29 02:48:20,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939627912] [2023-08-29 02:48:20,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:20,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 02:48:20,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:20,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 02:48:20,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-29 02:48:20,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 337 [2023-08-29 02:48:20,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 354 transitions, 2544 flow. Second operand has 5 states, 5 states have (on average 183.4) internal successors, (917), 5 states have internal predecessors, (917), 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 02:48:20,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:20,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 337 [2023-08-29 02:48:20,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:21,145 INFO L130 PetriNetUnfolder]: 442/1576 cut-off events. [2023-08-29 02:48:21,145 INFO L131 PetriNetUnfolder]: For 1483/1483 co-relation queries the response was YES. [2023-08-29 02:48:21,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4471 conditions, 1576 events. 442/1576 cut-off events. For 1483/1483 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 9145 event pairs, 99 based on Foata normal form. 114/1689 useless extension candidates. Maximal degree in co-relation 4450. Up to 649 conditions per place. [2023-08-29 02:48:21,156 INFO L137 encePairwiseOnDemand]: 328/337 looper letters, 33 selfloop transitions, 9 changer transitions 0/90 dead transitions. [2023-08-29 02:48:21,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 90 transitions, 516 flow [2023-08-29 02:48:21,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:48:21,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:48:21,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 767 transitions. [2023-08-29 02:48:21,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5689910979228486 [2023-08-29 02:48:21,163 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 767 transitions. [2023-08-29 02:48:21,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 767 transitions. [2023-08-29 02:48:21,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:21,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 767 transitions. [2023-08-29 02:48:21,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 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 02:48:21,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 337.0) internal successors, (1685), 5 states have internal predecessors, (1685), 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 02:48:21,180 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 337.0) internal successors, (1685), 5 states have internal predecessors, (1685), 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 02:48:21,180 INFO L175 Difference]: Start difference. First operand has 126 places, 354 transitions, 2544 flow. Second operand 4 states and 767 transitions. [2023-08-29 02:48:21,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 90 transitions, 516 flow [2023-08-29 02:48:21,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 298 flow, removed 50 selfloop flow, removed 29 redundant places. [2023-08-29 02:48:21,190 INFO L231 Difference]: Finished difference. Result has 94 places, 82 transitions, 207 flow [2023-08-29 02:48:21,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=94, PETRI_TRANSITIONS=82} [2023-08-29 02:48:21,192 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -14 predicate places. [2023-08-29 02:48:21,193 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 82 transitions, 207 flow [2023-08-29 02:48:21,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 183.4) internal successors, (917), 5 states have internal predecessors, (917), 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 02:48:21,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:21,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:21,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-29 02:48:21,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-29 02:48:21,399 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:21,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:21,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1222516607, now seen corresponding path program 1 times [2023-08-29 02:48:21,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:21,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325570560] [2023-08-29 02:48:21,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:21,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:21,651 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 02:48:21,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:21,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325570560] [2023-08-29 02:48:21,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325570560] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:21,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:21,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:48:21,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131053962] [2023-08-29 02:48:21,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:21,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:48:21,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:21,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:48:21,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:48:21,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 337 [2023-08-29 02:48:21,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 82 transitions, 207 flow. Second operand has 6 states, 6 states have (on average 151.83333333333334) internal successors, (911), 6 states have internal predecessors, (911), 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 02:48:21,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:21,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 337 [2023-08-29 02:48:21,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:22,054 INFO L130 PetriNetUnfolder]: 932/1996 cut-off events. [2023-08-29 02:48:22,054 INFO L131 PetriNetUnfolder]: For 407/407 co-relation queries the response was YES. [2023-08-29 02:48:22,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4350 conditions, 1996 events. 932/1996 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9651 event pairs, 828 based on Foata normal form. 0/1977 useless extension candidates. Maximal degree in co-relation 4343. Up to 1617 conditions per place. [2023-08-29 02:48:22,059 INFO L137 encePairwiseOnDemand]: 331/337 looper letters, 74 selfloop transitions, 5 changer transitions 7/105 dead transitions. [2023-08-29 02:48:22,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 105 transitions, 461 flow [2023-08-29 02:48:22,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:48:22,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:48:22,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 963 transitions. [2023-08-29 02:48:22,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4762611275964392 [2023-08-29 02:48:22,063 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 963 transitions. [2023-08-29 02:48:22,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 963 transitions. [2023-08-29 02:48:22,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:22,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 963 transitions. [2023-08-29 02:48:22,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.5) internal successors, (963), 6 states have internal predecessors, (963), 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 02:48:22,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 337.0) internal successors, (2359), 7 states have internal predecessors, (2359), 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 02:48:22,069 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 337.0) internal successors, (2359), 7 states have internal predecessors, (2359), 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 02:48:22,069 INFO L175 Difference]: Start difference. First operand has 94 places, 82 transitions, 207 flow. Second operand 6 states and 963 transitions. [2023-08-29 02:48:22,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 105 transitions, 461 flow [2023-08-29 02:48:22,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 105 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:48:22,072 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 199 flow [2023-08-29 02:48:22,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=199, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2023-08-29 02:48:22,072 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -12 predicate places. [2023-08-29 02:48:22,072 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 199 flow [2023-08-29 02:48:22,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.83333333333334) internal successors, (911), 6 states have internal predecessors, (911), 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 02:48:22,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:22,073 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:22,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-29 02:48:22,074 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:48:22,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:22,074 INFO L85 PathProgramCache]: Analyzing trace with hash -429765151, now seen corresponding path program 1 times [2023-08-29 02:48:22,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:22,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674727845] [2023-08-29 02:48:22,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:22,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 02:48:22,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:22,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674727845] [2023-08-29 02:48:22,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674727845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:22,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:22,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:48:22,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253257000] [2023-08-29 02:48:22,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:22,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:48:22,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:22,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:48:22,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:48:22,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 337 [2023-08-29 02:48:22,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 199 flow. Second operand has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 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 02:48:22,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:22,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 337 [2023-08-29 02:48:22,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:22,813 INFO L130 PetriNetUnfolder]: 704/1546 cut-off events. [2023-08-29 02:48:22,813 INFO L131 PetriNetUnfolder]: For 332/332 co-relation queries the response was YES. [2023-08-29 02:48:22,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 1546 events. 704/1546 cut-off events. For 332/332 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7226 event pairs, 637 based on Foata normal form. 15/1551 useless extension candidates. Maximal degree in co-relation 3389. Up to 1261 conditions per place. [2023-08-29 02:48:22,818 INFO L137 encePairwiseOnDemand]: 332/337 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2023-08-29 02:48:22,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 93 transitions, 387 flow [2023-08-29 02:48:22,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:48:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:48:22,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 956 transitions. [2023-08-29 02:48:22,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47279920870425324 [2023-08-29 02:48:22,822 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 956 transitions. [2023-08-29 02:48:22,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 956 transitions. [2023-08-29 02:48:22,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:22,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 956 transitions. [2023-08-29 02:48:22,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 159.33333333333334) internal successors, (956), 6 states have internal predecessors, (956), 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 02:48:22,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 337.0) internal successors, (2359), 7 states have internal predecessors, (2359), 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 02:48:22,829 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 337.0) internal successors, (2359), 7 states have internal predecessors, (2359), 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 02:48:22,829 INFO L175 Difference]: Start difference. First operand has 96 places, 78 transitions, 199 flow. Second operand 6 states and 956 transitions. [2023-08-29 02:48:22,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 93 transitions, 387 flow [2023-08-29 02:48:22,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 93 transitions, 377 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 02:48:22,831 INFO L231 Difference]: Finished difference. Result has 92 places, 0 transitions, 0 flow [2023-08-29 02:48:22,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=92, PETRI_TRANSITIONS=0} [2023-08-29 02:48:22,832 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -16 predicate places. [2023-08-29 02:48:22,833 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 0 transitions, 0 flow [2023-08-29 02:48:22,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 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 02:48:22,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (21 of 22 remaining) [2023-08-29 02:48:22,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 02:48:22,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 02:48:22,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 02:48:22,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 02:48:22,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 02:48:22,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 02:48:22,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 02:48:22,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 02:48:22,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 02:48:22,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 02:48:22,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 02:48:22,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 02:48:22,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 02:48:22,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 02:48:22,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 02:48:22,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 02:48:22,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 02:48:22,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 02:48:22,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 02:48:22,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 02:48:22,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 02:48:22,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 02:48:22,838 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:22,838 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 02:48:22,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 214 transitions, 440 flow [2023-08-29 02:48:22,879 INFO L130 PetriNetUnfolder]: 24/307 cut-off events. [2023-08-29 02:48:22,879 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 02:48:22,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 307 events. 24/307 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1129 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 192. Up to 6 conditions per place. [2023-08-29 02:48:22,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 214 transitions, 440 flow [2023-08-29 02:48:22,883 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 214 transitions, 440 flow [2023-08-29 02:48:22,883 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:48:22,883 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 214 transitions, 440 flow [2023-08-29 02:48:22,884 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 214 transitions, 440 flow [2023-08-29 02:48:22,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 214 transitions, 440 flow [2023-08-29 02:48:22,915 INFO L130 PetriNetUnfolder]: 24/307 cut-off events. [2023-08-29 02:48:22,916 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 02:48:22,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 307 events. 24/307 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1129 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 192. Up to 6 conditions per place. [2023-08-29 02:48:22,929 INFO L119 LiptonReduction]: Number of co-enabled transitions 22044 [2023-08-29 02:48:25,563 INFO L134 LiptonReduction]: Checked pairs total: 105750 [2023-08-29 02:48:25,564 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-08-29 02:48:25,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:48:25,565 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;@584a55fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:48:25,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 02:48:25,571 INFO L130 PetriNetUnfolder]: 4/63 cut-off events. [2023-08-29 02:48:25,571 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 02:48:25,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:25,572 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 02:48:25,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:48:25,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:25,572 INFO L85 PathProgramCache]: Analyzing trace with hash 465768870, now seen corresponding path program 1 times [2023-08-29 02:48:25,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:25,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144993554] [2023-08-29 02:48:25,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:25,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:48:25,589 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:48:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:48:25,605 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:48:25,606 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:48:25,606 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 02:48:25,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-29 02:48:25,607 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:48:25,607 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 02:48:25,607 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:48:25,607 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 02:48:25,640 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 02:48:25,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 281 transitions, 583 flow [2023-08-29 02:48:25,699 INFO L130 PetriNetUnfolder]: 34/423 cut-off events. [2023-08-29 02:48:25,699 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 02:48:25,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 423 events. 34/423 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1770 event pairs, 0 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 311. Up to 8 conditions per place. [2023-08-29 02:48:25,704 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 281 transitions, 583 flow [2023-08-29 02:48:25,707 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 266 places, 281 transitions, 583 flow [2023-08-29 02:48:25,708 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:48:25,708 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 281 transitions, 583 flow [2023-08-29 02:48:25,708 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 281 transitions, 583 flow [2023-08-29 02:48:25,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 281 transitions, 583 flow [2023-08-29 02:48:25,758 INFO L130 PetriNetUnfolder]: 34/423 cut-off events. [2023-08-29 02:48:25,759 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 02:48:25,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 423 events. 34/423 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1770 event pairs, 0 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 311. Up to 8 conditions per place. [2023-08-29 02:48:25,777 INFO L119 LiptonReduction]: Number of co-enabled transitions 46332 [2023-08-29 02:48:28,369 INFO L134 LiptonReduction]: Checked pairs total: 241739 [2023-08-29 02:48:28,370 INFO L136 LiptonReduction]: Total number of compositions: 146 [2023-08-29 02:48:28,371 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:48:28,371 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;@584a55fe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:48:28,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-29 02:48:28,372 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-08-29 02:48:28,372 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:48:28,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:28,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 02:48:28,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 02:48:28,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:28,372 INFO L85 PathProgramCache]: Analyzing trace with hash 52856, now seen corresponding path program 1 times [2023-08-29 02:48:28,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:28,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784230231] [2023-08-29 02:48:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:28,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:28,379 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 02:48:28,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:28,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784230231] [2023-08-29 02:48:28,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784230231] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:28,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:28,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 02:48:28,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305616417] [2023-08-29 02:48:28,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:28,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 02:48:28,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:28,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 02:48:28,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 02:48:28,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 427 [2023-08-29 02:48:28,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 165 transitions, 351 flow. Second operand has 2 states, 2 states have (on average 256.0) internal successors, (512), 2 states have internal predecessors, (512), 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 02:48:28,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:28,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 427 [2023-08-29 02:48:28,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:36,442 INFO L130 PetriNetUnfolder]: 49068/100799 cut-off events. [2023-08-29 02:48:36,442 INFO L131 PetriNetUnfolder]: For 1087/1087 co-relation queries the response was YES. [2023-08-29 02:48:36,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169676 conditions, 100799 events. 49068/100799 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 2174. Compared 1124976 event pairs, 49068 based on Foata normal form. 7088/99870 useless extension candidates. Maximal degree in co-relation 90896. Up to 68108 conditions per place. [2023-08-29 02:48:37,042 INFO L137 encePairwiseOnDemand]: 405/427 looper letters, 47 selfloop transitions, 0 changer transitions 0/143 dead transitions. [2023-08-29 02:48:37,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 143 transitions, 401 flow [2023-08-29 02:48:37,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 02:48:37,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 02:48:37,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 579 transitions. [2023-08-29 02:48:37,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6779859484777517 [2023-08-29 02:48:37,044 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 579 transitions. [2023-08-29 02:48:37,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 579 transitions. [2023-08-29 02:48:37,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:37,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 579 transitions. [2023-08-29 02:48:37,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 289.5) internal successors, (579), 2 states have internal predecessors, (579), 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 02:48:37,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 427.0) internal successors, (1281), 3 states have internal predecessors, (1281), 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 02:48:37,047 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 427.0) internal successors, (1281), 3 states have internal predecessors, (1281), 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 02:48:37,047 INFO L175 Difference]: Start difference. First operand has 152 places, 165 transitions, 351 flow. Second operand 2 states and 579 transitions. [2023-08-29 02:48:37,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 143 transitions, 401 flow [2023-08-29 02:48:37,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 143 transitions, 395 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-29 02:48:37,051 INFO L231 Difference]: Finished difference. Result has 151 places, 143 transitions, 301 flow [2023-08-29 02:48:37,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=301, PETRI_PLACES=151, PETRI_TRANSITIONS=143} [2023-08-29 02:48:37,051 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -1 predicate places. [2023-08-29 02:48:37,051 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 143 transitions, 301 flow [2023-08-29 02:48:37,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 256.0) internal successors, (512), 2 states have internal predecessors, (512), 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 02:48:37,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:37,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 02:48:37,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-29 02:48:37,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 02:48:37,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:37,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1637903, now seen corresponding path program 1 times [2023-08-29 02:48:37,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:37,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124051860] [2023-08-29 02:48:37,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:37,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:37,074 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 02:48:37,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:37,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124051860] [2023-08-29 02:48:37,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124051860] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:37,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:48:37,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:48:37,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134780939] [2023-08-29 02:48:37,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:37,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:48:37,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:37,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:48:37,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:48:37,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 427 [2023-08-29 02:48:37,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 143 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 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 02:48:37,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:37,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 427 [2023-08-29 02:48:37,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:48:45,379 INFO L130 PetriNetUnfolder]: 49068/105273 cut-off events. [2023-08-29 02:48:45,379 INFO L131 PetriNetUnfolder]: For 494/494 co-relation queries the response was YES. [2023-08-29 02:48:45,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173981 conditions, 105273 events. 49068/105273 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 2236. Compared 1222785 event pairs, 31512 based on Foata normal form. 0/97495 useless extension candidates. Maximal degree in co-relation 173975. Up to 68088 conditions per place. [2023-08-29 02:48:46,045 INFO L137 encePairwiseOnDemand]: 424/427 looper letters, 59 selfloop transitions, 2 changer transitions 0/157 dead transitions. [2023-08-29 02:48:46,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 157 transitions, 451 flow [2023-08-29 02:48:46,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:48:46,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:48:46,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 815 transitions. [2023-08-29 02:48:46,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6362217017954723 [2023-08-29 02:48:46,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 815 transitions. [2023-08-29 02:48:46,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 815 transitions. [2023-08-29 02:48:46,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:48:46,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 815 transitions. [2023-08-29 02:48:46,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 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 02:48:46,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 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 02:48:46,051 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 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 02:48:46,051 INFO L175 Difference]: Start difference. First operand has 151 places, 143 transitions, 301 flow. Second operand 3 states and 815 transitions. [2023-08-29 02:48:46,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 157 transitions, 451 flow [2023-08-29 02:48:46,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 157 transitions, 451 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:48:46,053 INFO L231 Difference]: Finished difference. Result has 154 places, 144 transitions, 313 flow [2023-08-29 02:48:46,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=154, PETRI_TRANSITIONS=144} [2023-08-29 02:48:46,054 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, 2 predicate places. [2023-08-29 02:48:46,054 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 144 transitions, 313 flow [2023-08-29 02:48:46,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 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 02:48:46,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:48:46,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:48:46,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-29 02:48:46,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 02:48:46,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:48:46,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1991421095, now seen corresponding path program 1 times [2023-08-29 02:48:46,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:48:46,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652698290] [2023-08-29 02:48:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:46,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:48:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:48:46,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:48:46,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652698290] [2023-08-29 02:48:46,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652698290] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:48:46,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992311594] [2023-08-29 02:48:46,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:48:46,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:48:46,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:48:46,089 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:48:46,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 02:48:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:48:46,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:48:46,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:48:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:48:46,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:48:46,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992311594] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:48:46,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:48:46,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-29 02:48:46,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544504559] [2023-08-29 02:48:46,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:48:46,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:48:46,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:48:46,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:48:46,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 02:48:46,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 427 [2023-08-29 02:48:46,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 144 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 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 02:48:46,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:48:46,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 427 [2023-08-29 02:48:46,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:49:00,029 INFO L130 PetriNetUnfolder]: 97905/178927 cut-off events. [2023-08-29 02:49:00,029 INFO L131 PetriNetUnfolder]: For 10129/10129 co-relation queries the response was YES. [2023-08-29 02:49:00,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324131 conditions, 178927 events. 97905/178927 cut-off events. For 10129/10129 co-relation queries the response was YES. Maximal size of possible extension queue 3414. Compared 1891434 event pairs, 74077 based on Foata normal form. 0/172893 useless extension candidates. Maximal degree in co-relation 324123. Up to 134892 conditions per place. [2023-08-29 02:49:01,284 INFO L137 encePairwiseOnDemand]: 416/427 looper letters, 67 selfloop transitions, 4 changer transitions 0/150 dead transitions. [2023-08-29 02:49:01,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 150 transitions, 484 flow [2023-08-29 02:49:01,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:49:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:49:01,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 778 transitions. [2023-08-29 02:49:01,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6073380171740828 [2023-08-29 02:49:01,287 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 778 transitions. [2023-08-29 02:49:01,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 778 transitions. [2023-08-29 02:49:01,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:49:01,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 778 transitions. [2023-08-29 02:49:01,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 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 02:49:01,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 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 02:49:01,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 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 02:49:01,291 INFO L175 Difference]: Start difference. First operand has 154 places, 144 transitions, 313 flow. Second operand 3 states and 778 transitions. [2023-08-29 02:49:01,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 150 transitions, 484 flow [2023-08-29 02:49:01,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 150 transitions, 481 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 02:49:01,296 INFO L231 Difference]: Finished difference. Result has 149 places, 141 transitions, 327 flow [2023-08-29 02:49:01,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=327, PETRI_PLACES=149, PETRI_TRANSITIONS=141} [2023-08-29 02:49:01,297 INFO L281 CegarLoopForPetriNet]: 152 programPoint places, -3 predicate places. [2023-08-29 02:49:01,297 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 141 transitions, 327 flow [2023-08-29 02:49:01,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 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 02:49:01,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:49:01,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:49:01,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-29 02:49:01,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:49:01,503 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 02:49:01,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:49:01,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1927508853, now seen corresponding path program 1 times [2023-08-29 02:49:01,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:49:01,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773714918] [2023-08-29 02:49:01,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:49:01,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:49:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:49:01,870 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 02:49:01,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:49:01,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773714918] [2023-08-29 02:49:01,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773714918] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:49:01,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:49:01,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:49:01,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649010982] [2023-08-29 02:49:01,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:49:01,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:49:01,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:49:01,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:49:01,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:49:02,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 427 [2023-08-29 02:49:02,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 141 transitions, 327 flow. Second operand has 6 states, 6 states have (on average 189.66666666666666) internal successors, (1138), 6 states have internal predecessors, (1138), 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 02:49:02,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:49:02,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 427 [2023-08-29 02:49:02,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand