./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.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_42-trylock2_racefree.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 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --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 02:54:28,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 02:54:28,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 02:54:28,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 02:54:28,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 02:54:28,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 02:54:28,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 02:54:28,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 02:54:28,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 02:54:28,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 02:54:28,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 02:54:28,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 02:54:28,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 02:54:28,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 02:54:28,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 02:54:28,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 02:54:28,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 02:54:28,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 02:54:28,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 02:54:28,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 02:54:28,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 02:54:28,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 02:54:28,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 02:54:28,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 02:54:28,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 02:54:28,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 02:54:28,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 02:54:28,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 02:54:28,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 02:54:28,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 02:54:28,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 02:54:28,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 02:54:28,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 02:54:28,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 02:54:28,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 02:54:28,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 02:54:28,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 02:54:28,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 02:54:28,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 02:54:28,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 02:54:28,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 02:54:28,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 02:54:28,663 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 02:54:28,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 02:54:28,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 02:54:28,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 02:54:28,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 02:54:28,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 02:54:28,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 02:54:28,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 02:54:28,666 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 02:54:28,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 02:54:28,667 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 02:54:28,667 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 02:54:28,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 02:54:28,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 02:54:28,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 02:54:28,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 02:54:28,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 02:54:28,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 02:54:28,668 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 02:54:28,668 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 02:54:28,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 02:54:28,668 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 02:54:28,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 02:54:28,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 02:54:28,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 02:54:28,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 02:54:28,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:54:28,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 02:54:28,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 02:54:28,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 02:54:28,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 02:54:28,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 02:54:28,670 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 02:54:28,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 02:54:28,670 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 02:54:28,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 02:54:28,670 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 02:54:28,670 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 02:54:28,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 02:54:28,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 02:54:28,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 02:54:28,914 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 02:54:28,915 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 02:54:28,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-08-29 02:54:29,900 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 02:54:30,082 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 02:54:30,082 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-08-29 02:54:30,093 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e93d14ddb/0253799b9d374c248c234b197e620cde/FLAGdb489af17 [2023-08-29 02:54:30,110 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e93d14ddb/0253799b9d374c248c234b197e620cde [2023-08-29 02:54:30,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 02:54:30,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 02:54:30,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 02:54:30,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 02:54:30,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 02:54:30,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:54:30" (1/1) ... [2023-08-29 02:54:30,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4541b71b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:30, skipping insertion in model container [2023-08-29 02:54:30,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:54:30" (1/1) ... [2023-08-29 02:54:30,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 02:54:30,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 02:54:30,399 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_42-trylock2_racefree.i[30176,30189] [2023-08-29 02:54:30,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:54:30,462 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 02:54:30,486 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_42-trylock2_racefree.i[30176,30189] [2023-08-29 02:54:30,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:54:30,536 INFO L208 MainTranslator]: Completed translation [2023-08-29 02:54:30,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:30 WrapperNode [2023-08-29 02:54:30,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 02:54:30,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 02:54:30,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 02:54:30,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 02:54:30,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:30" (1/1) ... [2023-08-29 02:54:30,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:30" (1/1) ... [2023-08-29 02:54:30,583 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 143 [2023-08-29 02:54:30,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 02:54:30,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 02:54:30,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 02:54:30,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 02:54:30,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:30" (1/1) ... [2023-08-29 02:54:30,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:30" (1/1) ... [2023-08-29 02:54:30,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:30" (1/1) ... [2023-08-29 02:54:30,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:30" (1/1) ... [2023-08-29 02:54:30,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:30" (1/1) ... [2023-08-29 02:54:30,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:30" (1/1) ... [2023-08-29 02:54:30,634 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:30" (1/1) ... [2023-08-29 02:54:30,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:30" (1/1) ... [2023-08-29 02:54:30,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 02:54:30,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 02:54:30,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 02:54:30,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 02:54:30,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:30" (1/1) ... [2023-08-29 02:54:30,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:54:30,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:54:30,694 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 02:54:30,699 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 02:54:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 02:54:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 02:54:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 02:54:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 02:54:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 02:54:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 02:54:30,728 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 02:54:30,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 02:54:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-29 02:54:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 02:54:30,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 02:54:30,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 02:54:30,730 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 02:54:30,820 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 02:54:30,821 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 02:54:31,102 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 02:54:31,108 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 02:54:31,108 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-29 02:54:31,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:54:31 BoogieIcfgContainer [2023-08-29 02:54:31,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 02:54:31,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 02:54:31,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 02:54:31,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 02:54:31,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 02:54:30" (1/3) ... [2023-08-29 02:54:31,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2592eb2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:54:31, skipping insertion in model container [2023-08-29 02:54:31,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:54:30" (2/3) ... [2023-08-29 02:54:31,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2592eb2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:54:31, skipping insertion in model container [2023-08-29 02:54:31,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:54:31" (3/3) ... [2023-08-29 02:54:31,121 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2023-08-29 02:54:31,126 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 02:54:31,132 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 02:54:31,132 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-29 02:54:31,132 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 02:54:31,215 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 02:54:31,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 230 transitions, 468 flow [2023-08-29 02:54:31,350 INFO L130 PetriNetUnfolder]: 45/329 cut-off events. [2023-08-29 02:54:31,350 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:54:31,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 329 events. 45/329 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1459 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 189. Up to 6 conditions per place. [2023-08-29 02:54:31,357 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 230 transitions, 468 flow [2023-08-29 02:54:31,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 230 transitions, 468 flow [2023-08-29 02:54:31,368 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:54:31,375 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 230 transitions, 468 flow [2023-08-29 02:54:31,378 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 230 transitions, 468 flow [2023-08-29 02:54:31,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 230 transitions, 468 flow [2023-08-29 02:54:31,419 INFO L130 PetriNetUnfolder]: 45/329 cut-off events. [2023-08-29 02:54:31,419 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:54:31,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 329 events. 45/329 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1459 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 189. Up to 6 conditions per place. [2023-08-29 02:54:31,428 INFO L119 LiptonReduction]: Number of co-enabled transitions 17850 [2023-08-29 02:54:34,443 INFO L134 LiptonReduction]: Checked pairs total: 58191 [2023-08-29 02:54:34,443 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-08-29 02:54:34,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:54:34,462 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;@71258320, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:54:34,463 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-29 02:54:34,466 INFO L130 PetriNetUnfolder]: 1/15 cut-off events. [2023-08-29 02:54:34,466 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:54:34,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:34,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 02:54:34,467 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 02:54:34,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:34,470 INFO L85 PathProgramCache]: Analyzing trace with hash 805564314, now seen corresponding path program 1 times [2023-08-29 02:54:34,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:34,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514177778] [2023-08-29 02:54:34,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:34,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:34,646 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 02:54:34,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:54:34,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514177778] [2023-08-29 02:54:34,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514177778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:54:34,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:54:34,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:54:34,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203649080] [2023-08-29 02:54:34,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:54:34,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:54:34,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:54:34,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:54:34,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:54:34,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 380 [2023-08-29 02:54:34,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 113 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 02:54:34,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:54:34,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 380 [2023-08-29 02:54:34,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:54:34,862 INFO L130 PetriNetUnfolder]: 642/1683 cut-off events. [2023-08-29 02:54:34,862 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:54:34,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2985 conditions, 1683 events. 642/1683 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 9994 event pairs, 549 based on Foata normal form. 278/1749 useless extension candidates. Maximal degree in co-relation 2961. Up to 1268 conditions per place. [2023-08-29 02:54:34,869 INFO L137 encePairwiseOnDemand]: 352/380 looper letters, 74 selfloop transitions, 2 changer transitions 2/111 dead transitions. [2023-08-29 02:54:34,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 111 transitions, 386 flow [2023-08-29 02:54:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:54:34,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:54:34,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 695 transitions. [2023-08-29 02:54:34,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6096491228070176 [2023-08-29 02:54:34,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 695 transitions. [2023-08-29 02:54:34,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 695 transitions. [2023-08-29 02:54:34,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:54:34,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 695 transitions. [2023-08-29 02:54:34,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states 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 02:54:34,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 02:54:34,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 02:54:34,892 INFO L175 Difference]: Start difference. First operand has 90 places, 113 transitions, 234 flow. Second operand 3 states and 695 transitions. [2023-08-29 02:54:34,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 111 transitions, 386 flow [2023-08-29 02:54:34,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:54:34,897 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 181 flow [2023-08-29 02:54:34,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2023-08-29 02:54:34,917 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 0 predicate places. [2023-08-29 02:54:34,917 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 181 flow [2023-08-29 02:54:34,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 02:54:34,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:34,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:54:34,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 02:54:34,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 02:54:34,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:34,919 INFO L85 PathProgramCache]: Analyzing trace with hash -480416501, now seen corresponding path program 1 times [2023-08-29 02:54:34,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:34,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437465499] [2023-08-29 02:54:34,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:34,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:34,965 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 02:54:34,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:54:34,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437465499] [2023-08-29 02:54:34,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437465499] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:54:34,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:54:34,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:54:34,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9252520] [2023-08-29 02:54:34,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:54:34,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:54:34,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:54:34,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:54:34,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:54:34,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 380 [2023-08-29 02:54:34,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 181 flow. Second operand has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states 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 02:54:34,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:54:34,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 380 [2023-08-29 02:54:34,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:54:35,277 INFO L130 PetriNetUnfolder]: 1313/3237 cut-off events. [2023-08-29 02:54:35,277 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-08-29 02:54:35,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6003 conditions, 3237 events. 1313/3237 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 21684 event pairs, 256 based on Foata normal form. 0/2903 useless extension candidates. Maximal degree in co-relation 5983. Up to 1491 conditions per place. [2023-08-29 02:54:35,288 INFO L137 encePairwiseOnDemand]: 365/380 looper letters, 101 selfloop transitions, 10 changer transitions 0/132 dead transitions. [2023-08-29 02:54:35,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 132 transitions, 504 flow [2023-08-29 02:54:35,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:54:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:54:35,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 656 transitions. [2023-08-29 02:54:35,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5754385964912281 [2023-08-29 02:54:35,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 656 transitions. [2023-08-29 02:54:35,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 656 transitions. [2023-08-29 02:54:35,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:54:35,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 656 transitions. [2023-08-29 02:54:35,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states 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 02:54:35,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 02:54:35,295 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 02:54:35,295 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 181 flow. Second operand 3 states and 656 transitions. [2023-08-29 02:54:35,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 132 transitions, 504 flow [2023-08-29 02:54:35,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 132 transitions, 498 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:54:35,299 INFO L231 Difference]: Finished difference. Result has 89 places, 90 transitions, 251 flow [2023-08-29 02:54:35,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=251, PETRI_PLACES=89, PETRI_TRANSITIONS=90} [2023-08-29 02:54:35,301 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -1 predicate places. [2023-08-29 02:54:35,301 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 90 transitions, 251 flow [2023-08-29 02:54:35,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states 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 02:54:35,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:35,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:54:35,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 02:54:35,303 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 02:54:35,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:35,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1256209677, now seen corresponding path program 1 times [2023-08-29 02:54:35,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:35,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676921291] [2023-08-29 02:54:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:35,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:35,350 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 02:54:35,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:54:35,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676921291] [2023-08-29 02:54:35,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676921291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:54:35,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:54:35,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:54:35,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731888428] [2023-08-29 02:54:35,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:54:35,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:54:35,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:54:35,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:54:35,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:54:35,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 380 [2023-08-29 02:54:35,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 90 transitions, 251 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states 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 02:54:35,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:54:35,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 380 [2023-08-29 02:54:35,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:54:35,678 INFO L130 PetriNetUnfolder]: 1198/3036 cut-off events. [2023-08-29 02:54:35,678 INFO L131 PetriNetUnfolder]: For 534/538 co-relation queries the response was YES. [2023-08-29 02:54:35,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6031 conditions, 3036 events. 1198/3036 cut-off events. For 534/538 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 20287 event pairs, 937 based on Foata normal form. 4/2704 useless extension candidates. Maximal degree in co-relation 6011. Up to 2369 conditions per place. [2023-08-29 02:54:35,692 INFO L137 encePairwiseOnDemand]: 374/380 looper letters, 82 selfloop transitions, 7 changer transitions 0/119 dead transitions. [2023-08-29 02:54:35,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 119 transitions, 506 flow [2023-08-29 02:54:35,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:54:35,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:54:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2023-08-29 02:54:35,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5622807017543859 [2023-08-29 02:54:35,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2023-08-29 02:54:35,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2023-08-29 02:54:35,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:54:35,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2023-08-29 02:54:35,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 0 states 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 02:54:35,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 02:54:35,699 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 02:54:35,699 INFO L175 Difference]: Start difference. First operand has 89 places, 90 transitions, 251 flow. Second operand 3 states and 641 transitions. [2023-08-29 02:54:35,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 119 transitions, 506 flow [2023-08-29 02:54:35,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 119 transitions, 480 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:54:35,712 INFO L231 Difference]: Finished difference. Result has 90 places, 96 transitions, 288 flow [2023-08-29 02:54:35,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=90, PETRI_TRANSITIONS=96} [2023-08-29 02:54:35,713 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 0 predicate places. [2023-08-29 02:54:35,713 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 96 transitions, 288 flow [2023-08-29 02:54:35,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states 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 02:54:35,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:35,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:54:35,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 02:54:35,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 02:54:35,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:35,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1598753186, now seen corresponding path program 1 times [2023-08-29 02:54:35,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:35,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234011653] [2023-08-29 02:54:35,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:35,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:35,766 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 02:54:35,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:54:35,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234011653] [2023-08-29 02:54:35,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234011653] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:54:35,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703319132] [2023-08-29 02:54:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:35,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:54:35,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:54:35,769 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 02:54:35,795 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 02:54:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:35,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:54:35,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:54:35,895 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 02:54:35,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:54:35,911 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 02:54:35,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703319132] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:54:35,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:54:35,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:54:35,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213512808] [2023-08-29 02:54:35,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:54:35,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:54:35,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:54:35,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:54:35,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:54:35,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 380 [2023-08-29 02:54:35,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 96 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 195.28571428571428) internal successors, (1367), 7 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states 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 02:54:35,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:54:35,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 380 [2023-08-29 02:54:35,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:54:35,985 INFO L130 PetriNetUnfolder]: 48/165 cut-off events. [2023-08-29 02:54:35,985 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-29 02:54:35,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 165 events. 48/165 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 411 event pairs, 0 based on Foata normal form. 25/187 useless extension candidates. Maximal degree in co-relation 301. Up to 98 conditions per place. [2023-08-29 02:54:35,986 INFO L137 encePairwiseOnDemand]: 377/380 looper letters, 45 selfloop transitions, 2 changer transitions 6/69 dead transitions. [2023-08-29 02:54:35,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 275 flow [2023-08-29 02:54:35,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:54:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:54:35,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 822 transitions. [2023-08-29 02:54:35,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407894736842105 [2023-08-29 02:54:35,988 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 822 transitions. [2023-08-29 02:54:35,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 822 transitions. [2023-08-29 02:54:35,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:54:35,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 822 transitions. [2023-08-29 02:54:35,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 205.5) internal successors, (822), 4 states have internal predecessors, (822), 0 states have call successors, (0), 0 states 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 02:54:35,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 380.0) internal successors, (1900), 5 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states 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 02:54:35,993 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 380.0) internal successors, (1900), 5 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states 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 02:54:35,993 INFO L175 Difference]: Start difference. First operand has 90 places, 96 transitions, 288 flow. Second operand 4 states and 822 transitions. [2023-08-29 02:54:35,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 275 flow [2023-08-29 02:54:35,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 69 transitions, 249 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-29 02:54:35,994 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 91 flow [2023-08-29 02:54:35,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=47, 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=91, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-08-29 02:54:35,996 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -40 predicate places. [2023-08-29 02:54:35,996 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 91 flow [2023-08-29 02:54:35,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 195.28571428571428) internal successors, (1367), 7 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states 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 02:54:35,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:35,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:54:36,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-29 02:54:36,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:54:36,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 02:54:36,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:36,204 INFO L85 PathProgramCache]: Analyzing trace with hash -906512915, now seen corresponding path program 1 times [2023-08-29 02:54:36,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:36,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806679423] [2023-08-29 02:54:36,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:36,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:36,248 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 02:54:36,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:54:36,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806679423] [2023-08-29 02:54:36,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806679423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:54:36,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:54:36,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:54:36,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871631067] [2023-08-29 02:54:36,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:54:36,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:54:36,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:54:36,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:54:36,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:54:36,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 380 [2023-08-29 02:54:36,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states 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 02:54:36,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:54:36,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 380 [2023-08-29 02:54:36,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:54:36,318 INFO L130 PetriNetUnfolder]: 46/157 cut-off events. [2023-08-29 02:54:36,318 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-29 02:54:36,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 157 events. 46/157 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 301 event pairs, 42 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 292. Up to 111 conditions per place. [2023-08-29 02:54:36,319 INFO L137 encePairwiseOnDemand]: 377/380 looper letters, 27 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-29 02:54:36,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 153 flow [2023-08-29 02:54:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:54:36,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:54:36,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 588 transitions. [2023-08-29 02:54:36,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2023-08-29 02:54:36,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 588 transitions. [2023-08-29 02:54:36,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 588 transitions. [2023-08-29 02:54:36,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:54:36,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 588 transitions. [2023-08-29 02:54:36,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 states 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 02:54:36,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 02:54:36,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 02:54:36,326 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 91 flow. Second operand 3 states and 588 transitions. [2023-08-29 02:54:36,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 153 flow [2023-08-29 02:54:36,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 149 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:54:36,328 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 90 flow [2023-08-29 02:54:36,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-08-29 02:54:36,328 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -44 predicate places. [2023-08-29 02:54:36,329 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 90 flow [2023-08-29 02:54:36,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states 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 02:54:36,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:36,330 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] [2023-08-29 02:54:36,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 02:54:36,330 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 02:54:36,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:36,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1791153373, now seen corresponding path program 1 times [2023-08-29 02:54:36,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:36,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933110079] [2023-08-29 02:54:36,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:36,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:36,369 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 02:54:36,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:54:36,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933110079] [2023-08-29 02:54:36,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933110079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:54:36,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:54:36,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:54:36,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416189662] [2023-08-29 02:54:36,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:54:36,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:54:36,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:54:36,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:54:36,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:54:36,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 380 [2023-08-29 02:54:36,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states 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 02:54:36,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:54:36,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 380 [2023-08-29 02:54:36,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:54:36,414 INFO L130 PetriNetUnfolder]: 48/150 cut-off events. [2023-08-29 02:54:36,415 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:54:36,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 150 events. 48/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 266 event pairs, 36 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 296. Up to 96 conditions per place. [2023-08-29 02:54:36,415 INFO L137 encePairwiseOnDemand]: 374/380 looper letters, 26 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-08-29 02:54:36,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 151 flow [2023-08-29 02:54:36,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:54:36,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:54:36,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2023-08-29 02:54:36,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2023-08-29 02:54:36,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2023-08-29 02:54:36,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2023-08-29 02:54:36,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:54:36,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2023-08-29 02:54:36,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states 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 02:54:36,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 02:54:36,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 02:54:36,422 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 90 flow. Second operand 3 states and 590 transitions. [2023-08-29 02:54:36,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 151 flow [2023-08-29 02:54:36,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 147 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:54:36,424 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 90 flow [2023-08-29 02:54:36,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-08-29 02:54:36,427 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -46 predicate places. [2023-08-29 02:54:36,427 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 90 flow [2023-08-29 02:54:36,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states 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 02:54:36,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:36,428 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] [2023-08-29 02:54:36,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 02:54:36,428 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 17 more)] === [2023-08-29 02:54:36,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:36,429 INFO L85 PathProgramCache]: Analyzing trace with hash -422845218, now seen corresponding path program 1 times [2023-08-29 02:54:36,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:36,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781042347] [2023-08-29 02:54:36,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:36,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:36,467 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 02:54:36,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:54:36,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781042347] [2023-08-29 02:54:36,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781042347] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:54:36,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:54:36,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:54:36,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125162098] [2023-08-29 02:54:36,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:54:36,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:54:36,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:54:36,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:54:36,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:54:36,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 380 [2023-08-29 02:54:36,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:54:36,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:54:36,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 380 [2023-08-29 02:54:36,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:54:36,516 INFO L130 PetriNetUnfolder]: 46/145 cut-off events. [2023-08-29 02:54:36,517 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 02:54:36,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 145 events. 46/145 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 248 event pairs, 42 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 291. Up to 111 conditions per place. [2023-08-29 02:54:36,517 INFO L137 encePairwiseOnDemand]: 377/380 looper letters, 27 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-08-29 02:54:36,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 151 flow [2023-08-29 02:54:36,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:54:36,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:54:36,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2023-08-29 02:54:36,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210526315789473 [2023-08-29 02:54:36,519 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2023-08-29 02:54:36,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2023-08-29 02:54:36,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:54:36,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2023-08-29 02:54:36,520 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 02:54:36,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 02:54:36,521 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 02:54:36,521 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 90 flow. Second operand 3 states and 594 transitions. [2023-08-29 02:54:36,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 151 flow [2023-08-29 02:54:36,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 143 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:54:36,522 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 84 flow [2023-08-29 02:54:36,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-08-29 02:54:36,522 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -47 predicate places. [2023-08-29 02:54:36,522 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 84 flow [2023-08-29 02:54:36,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:54:36,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:36,523 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] [2023-08-29 02:54:36,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 02:54:36,523 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr7ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 02:54:36,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:36,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1395848554, now seen corresponding path program 1 times [2023-08-29 02:54:36,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:36,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203383675] [2023-08-29 02:54:36,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:36,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:36,551 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 02:54:36,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:54:36,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203383675] [2023-08-29 02:54:36,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203383675] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:54:36,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:54:36,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:54:36,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699909416] [2023-08-29 02:54:36,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:54:36,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:54:36,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:54:36,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:54:36,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:54:36,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 380 [2023-08-29 02:54:36,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states 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 02:54:36,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:54:36,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 380 [2023-08-29 02:54:36,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:54:36,595 INFO L130 PetriNetUnfolder]: 46/142 cut-off events. [2023-08-29 02:54:36,595 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:54:36,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 142 events. 46/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 242 event pairs, 44 based on Foata normal form. 3/142 useless extension candidates. Maximal degree in co-relation 282. Up to 116 conditions per place. [2023-08-29 02:54:36,596 INFO L137 encePairwiseOnDemand]: 378/380 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2023-08-29 02:54:36,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 145 flow [2023-08-29 02:54:36,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:54:36,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:54:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2023-08-29 02:54:36,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210526315789473 [2023-08-29 02:54:36,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2023-08-29 02:54:36,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2023-08-29 02:54:36,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:54:36,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2023-08-29 02:54:36,598 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 02:54:36,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 02:54:36,600 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 02:54:36,600 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 84 flow. Second operand 3 states and 594 transitions. [2023-08-29 02:54:36,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 145 flow [2023-08-29 02:54:36,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 141 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:54:36,600 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-08-29 02:54:36,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-08-29 02:54:36,601 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -48 predicate places. [2023-08-29 02:54:36,601 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-08-29 02:54:36,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states 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 02:54:36,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (20 of 21 remaining) [2023-08-29 02:54:36,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2023-08-29 02:54:36,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2023-08-29 02:54:36,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2023-08-29 02:54:36,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2023-08-29 02:54:36,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2023-08-29 02:54:36,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2023-08-29 02:54:36,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2023-08-29 02:54:36,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2023-08-29 02:54:36,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2023-08-29 02:54:36,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2023-08-29 02:54:36,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2023-08-29 02:54:36,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2023-08-29 02:54:36,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2023-08-29 02:54:36,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2023-08-29 02:54:36,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2023-08-29 02:54:36,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2023-08-29 02:54:36,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2023-08-29 02:54:36,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2023-08-29 02:54:36,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2023-08-29 02:54:36,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2023-08-29 02:54:36,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 02:54:36,604 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:54:36,606 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 02:54:36,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 230 transitions, 468 flow [2023-08-29 02:54:36,631 INFO L130 PetriNetUnfolder]: 45/329 cut-off events. [2023-08-29 02:54:36,631 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:54:36,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 329 events. 45/329 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1459 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 189. Up to 6 conditions per place. [2023-08-29 02:54:36,633 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 230 transitions, 468 flow [2023-08-29 02:54:36,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 225 transitions, 455 flow [2023-08-29 02:54:36,634 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:54:36,634 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 225 transitions, 455 flow [2023-08-29 02:54:36,634 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 225 transitions, 455 flow [2023-08-29 02:54:36,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 225 transitions, 455 flow [2023-08-29 02:54:36,648 INFO L130 PetriNetUnfolder]: 44/324 cut-off events. [2023-08-29 02:54:36,649 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:54:36,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 324 events. 44/324 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1456 event pairs, 0 based on Foata normal form. 0/258 useless extension candidates. Maximal degree in co-relation 189. Up to 6 conditions per place. [2023-08-29 02:54:36,654 INFO L119 LiptonReduction]: Number of co-enabled transitions 17850 [2023-08-29 02:54:39,324 INFO L134 LiptonReduction]: Checked pairs total: 58010 [2023-08-29 02:54:39,324 INFO L136 LiptonReduction]: Total number of compositions: 146 [2023-08-29 02:54:39,326 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:54:39,326 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;@71258320, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:54:39,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 02:54:39,329 INFO L130 PetriNetUnfolder]: 2/33 cut-off events. [2023-08-29 02:54:39,329 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:54:39,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:39,329 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 02:54:39,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:54:39,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:39,330 INFO L85 PathProgramCache]: Analyzing trace with hash -783210862, now seen corresponding path program 1 times [2023-08-29 02:54:39,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:39,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675956734] [2023-08-29 02:54:39,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:39,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:54:39,342 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:54:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:54:39,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:54:39,361 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:54:39,362 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 02:54:39,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 02:54:39,362 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:54:39,362 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 02:54:39,363 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:54:39,363 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 02:54:39,384 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 02:54:39,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 317 transitions, 652 flow [2023-08-29 02:54:39,448 INFO L130 PetriNetUnfolder]: 76/545 cut-off events. [2023-08-29 02:54:39,448 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:54:39,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 545 events. 76/545 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2713 event pairs, 0 based on Foata normal form. 0/433 useless extension candidates. Maximal degree in co-relation 331. Up to 9 conditions per place. [2023-08-29 02:54:39,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 280 places, 317 transitions, 652 flow [2023-08-29 02:54:39,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 317 transitions, 652 flow [2023-08-29 02:54:39,455 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:54:39,455 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 280 places, 317 transitions, 652 flow [2023-08-29 02:54:39,455 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 280 places, 317 transitions, 652 flow [2023-08-29 02:54:39,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 317 transitions, 652 flow [2023-08-29 02:54:39,498 INFO L130 PetriNetUnfolder]: 76/545 cut-off events. [2023-08-29 02:54:39,499 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:54:39,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 545 events. 76/545 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2713 event pairs, 0 based on Foata normal form. 0/433 useless extension candidates. Maximal degree in co-relation 331. Up to 9 conditions per place. [2023-08-29 02:54:39,518 INFO L119 LiptonReduction]: Number of co-enabled transitions 52020 [2023-08-29 02:54:42,479 INFO L134 LiptonReduction]: Checked pairs total: 207896 [2023-08-29 02:54:42,480 INFO L136 LiptonReduction]: Total number of compositions: 179 [2023-08-29 02:54:42,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:54:42,481 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;@71258320, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:54:42,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-29 02:54:42,483 INFO L130 PetriNetUnfolder]: 1/18 cut-off events. [2023-08-29 02:54:42,483 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:54:42,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:42,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 02:54:42,483 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:54:42,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:42,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1501252791, now seen corresponding path program 1 times [2023-08-29 02:54:42,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:42,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220188503] [2023-08-29 02:54:42,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:42,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:42,499 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 02:54:42,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:54:42,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220188503] [2023-08-29 02:54:42,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220188503] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:54:42,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:54:42,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:54:42,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391437972] [2023-08-29 02:54:42,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:54:42,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:54:42,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:54:42,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:54:42,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:54:42,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 496 [2023-08-29 02:54:42,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 179 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 states 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 02:54:42,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:54:42,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 496 [2023-08-29 02:54:42,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:54:45,878 INFO L130 PetriNetUnfolder]: 22910/46095 cut-off events. [2023-08-29 02:54:45,879 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2023-08-29 02:54:45,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81229 conditions, 46095 events. 22910/46095 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 441581 event pairs, 21398 based on Foata normal form. 7689/48626 useless extension candidates. Maximal degree in co-relation 66998. Up to 34991 conditions per place. [2023-08-29 02:54:46,078 INFO L137 encePairwiseOnDemand]: 456/496 looper letters, 91 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2023-08-29 02:54:46,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 162 transitions, 528 flow [2023-08-29 02:54:46,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:54:46,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:54:46,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 941 transitions. [2023-08-29 02:54:46,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6323924731182796 [2023-08-29 02:54:46,082 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 941 transitions. [2023-08-29 02:54:46,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 941 transitions. [2023-08-29 02:54:46,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:54:46,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 941 transitions. [2023-08-29 02:54:46,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 states 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 02:54:46,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:54:46,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:54:46,087 INFO L175 Difference]: Start difference. First operand has 145 places, 179 transitions, 376 flow. Second operand 3 states and 941 transitions. [2023-08-29 02:54:46,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 162 transitions, 528 flow [2023-08-29 02:54:46,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 162 transitions, 528 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:54:46,090 INFO L231 Difference]: Finished difference. Result has 145 places, 141 transitions, 310 flow [2023-08-29 02:54:46,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=145, PETRI_TRANSITIONS=141} [2023-08-29 02:54:46,091 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, 0 predicate places. [2023-08-29 02:54:46,091 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 141 transitions, 310 flow [2023-08-29 02:54:46,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 states 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 02:54:46,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:46,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:54:46,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 02:54:46,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:54:46,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:46,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1234794175, now seen corresponding path program 1 times [2023-08-29 02:54:46,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:46,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769252273] [2023-08-29 02:54:46,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:46,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:46,108 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 02:54:46,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:54:46,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769252273] [2023-08-29 02:54:46,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769252273] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:54:46,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:54:46,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:54:46,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076680046] [2023-08-29 02:54:46,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:54:46,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:54:46,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:54:46,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:54:46,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:54:46,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 496 [2023-08-29 02:54:46,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 141 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 0 states have call successors, (0), 0 states 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 02:54:46,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:54:46,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 496 [2023-08-29 02:54:46,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:54:53,719 INFO L130 PetriNetUnfolder]: 76741/142612 cut-off events. [2023-08-29 02:54:53,720 INFO L131 PetriNetUnfolder]: For 2004/2004 co-relation queries the response was YES. [2023-08-29 02:54:53,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263084 conditions, 142612 events. 76741/142612 cut-off events. For 2004/2004 co-relation queries the response was YES. Maximal size of possible extension queue 2136. Compared 1447514 event pairs, 24983 based on Foata normal form. 0/127585 useless extension candidates. Maximal degree in co-relation 262900. Up to 60497 conditions per place. [2023-08-29 02:54:54,675 INFO L137 encePairwiseOnDemand]: 471/496 looper letters, 155 selfloop transitions, 18 changer transitions 0/223 dead transitions. [2023-08-29 02:54:54,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 223 transitions, 838 flow [2023-08-29 02:54:54,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:54:54,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:54:54,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 913 transitions. [2023-08-29 02:54:54,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6135752688172043 [2023-08-29 02:54:54,680 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 913 transitions. [2023-08-29 02:54:54,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 913 transitions. [2023-08-29 02:54:54,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:54:54,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 913 transitions. [2023-08-29 02:54:54,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states 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 02:54:54,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:54:54,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:54:54,687 INFO L175 Difference]: Start difference. First operand has 145 places, 141 transitions, 310 flow. Second operand 3 states and 913 transitions. [2023-08-29 02:54:54,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 223 transitions, 838 flow [2023-08-29 02:54:54,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 223 transitions, 835 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 02:54:54,692 INFO L231 Difference]: Finished difference. Result has 148 places, 159 transitions, 466 flow [2023-08-29 02:54:54,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=466, PETRI_PLACES=148, PETRI_TRANSITIONS=159} [2023-08-29 02:54:54,693 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, 3 predicate places. [2023-08-29 02:54:54,693 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 159 transitions, 466 flow [2023-08-29 02:54:54,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 0 states have call successors, (0), 0 states 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 02:54:54,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:54,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:54:54,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 02:54:54,694 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:54:54,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:54,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1546098390, now seen corresponding path program 1 times [2023-08-29 02:54:54,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:54,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723155854] [2023-08-29 02:54:54,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:54,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:54,713 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 02:54:54,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:54:54,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723155854] [2023-08-29 02:54:54,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723155854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:54:54,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:54:54,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:54:54,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454655887] [2023-08-29 02:54:54,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:54:54,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:54:54,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:54:54,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:54:54,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:54:54,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 496 [2023-08-29 02:54:54,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 159 transitions, 466 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states 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 02:54:54,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:54:54,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 496 [2023-08-29 02:54:54,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:54:55,089 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1210] L702-16-->L702-17: Formula: (= |v_#race~g1~0_10| 0) InVars {} OutVars{#race~g1~0=|v_#race~g1~0_10|} AuxVars[] AssignedVars[#race~g1~0][80], [34#L712-4true, Black: 288#true, t_funThread1of2ForFork0InUse, 294#true, 76#L702-17true, t_funThread2of2ForFork0InUse, 22#L702-4true, 290#(= |#race~g1~0| 0), Black: 285#(= |ULTIMATE.start_main_~i~0#1| 0)]) [2023-08-29 02:54:55,089 INFO L383 tUnfolder$Statistics]: this new event has 30 ancestors and is cut-off event [2023-08-29 02:54:55,089 INFO L386 tUnfolder$Statistics]: existing Event has 30 ancestors and is cut-off event [2023-08-29 02:54:55,089 INFO L386 tUnfolder$Statistics]: existing Event has 30 ancestors and is cut-off event [2023-08-29 02:54:55,089 INFO L386 tUnfolder$Statistics]: existing Event has 30 ancestors and is cut-off event [2023-08-29 02:54:55,185 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1426] L702-6-->L702-8: Formula: (= |v_t_funThread2of2ForFork0_#t~nondet6_15| |v_#race~g1~0_65|) InVars {} OutVars{t_funThread2of2ForFork0_#t~nondet6=|v_t_funThread2of2ForFork0_#t~nondet6_15|, #race~g1~0=|v_#race~g1~0_65|} AuxVars[] AssignedVars[t_funThread2of2ForFork0_#t~nondet6, #race~g1~0][45], [34#L712-4true, 288#true, 247#L702-16true, Black: 290#(= |#race~g1~0| 0), t_funThread1of2ForFork0InUse, 294#true, t_funThread2of2ForFork0InUse, 127#L702-8true, Black: 285#(= |ULTIMATE.start_main_~i~0#1| 0)]) [2023-08-29 02:54:55,185 INFO L383 tUnfolder$Statistics]: this new event has 32 ancestors and is cut-off event [2023-08-29 02:54:55,185 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-29 02:54:55,185 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-29 02:54:55,185 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2023-08-29 02:55:03,023 INFO L130 PetriNetUnfolder]: 67915/137041 cut-off events. [2023-08-29 02:55:03,024 INFO L131 PetriNetUnfolder]: For 33252/33639 co-relation queries the response was YES. [2023-08-29 02:55:03,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273087 conditions, 137041 events. 67915/137041 cut-off events. For 33252/33639 co-relation queries the response was YES. Maximal size of possible extension queue 2172. Compared 1488404 event pairs, 53950 based on Foata normal form. 1/121580 useless extension candidates. Maximal degree in co-relation 182848. Up to 102247 conditions per place. [2023-08-29 02:55:03,925 INFO L137 encePairwiseOnDemand]: 486/496 looper letters, 132 selfloop transitions, 17 changer transitions 0/219 dead transitions. [2023-08-29 02:55:03,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 219 transitions, 940 flow [2023-08-29 02:55:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:03,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 895 transitions. [2023-08-29 02:55:03,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6014784946236559 [2023-08-29 02:55:03,929 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 895 transitions. [2023-08-29 02:55:03,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 895 transitions. [2023-08-29 02:55:03,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:03,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 895 transitions. [2023-08-29 02:55:03,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 02:55:03,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:55:03,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:55:03,933 INFO L175 Difference]: Start difference. First operand has 148 places, 159 transitions, 466 flow. Second operand 3 states and 895 transitions. [2023-08-29 02:55:03,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 219 transitions, 940 flow [2023-08-29 02:55:03,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 219 transitions, 890 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:55:03,997 INFO L231 Difference]: Finished difference. Result has 149 places, 174 transitions, 571 flow [2023-08-29 02:55:03,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=571, PETRI_PLACES=149, PETRI_TRANSITIONS=174} [2023-08-29 02:55:03,999 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, 4 predicate places. [2023-08-29 02:55:03,999 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 174 transitions, 571 flow [2023-08-29 02:55:03,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states 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 02:55:03,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:03,999 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:03,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 02:55:03,999 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:55:04,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:04,000 INFO L85 PathProgramCache]: Analyzing trace with hash -694766702, now seen corresponding path program 1 times [2023-08-29 02:55:04,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:04,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295216677] [2023-08-29 02:55:04,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:04,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:04,031 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 02:55:04,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:04,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295216677] [2023-08-29 02:55:04,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295216677] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:04,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:04,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:04,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955430609] [2023-08-29 02:55:04,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:04,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:04,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:04,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:04,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:04,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 496 [2023-08-29 02:55:04,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 174 transitions, 571 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states 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 02:55:04,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:04,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 496 [2023-08-29 02:55:04,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:04,380 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1210] L702-16-->L702-17: Formula: (= |v_#race~g1~0_10| 0) InVars {} OutVars{#race~g1~0=|v_#race~g1~0_10|} AuxVars[] AssignedVars[#race~g1~0][77], [34#L712-4true, Black: 288#true, 299#true, t_funThread1of2ForFork0InUse, 294#true, t_funThread2of2ForFork0InUse, 76#L702-17true, Black: 296#(= |t_funThread1of2ForFork0_#t~nondet6| |#race~g1~0|), 22#L702-4true, Black: 285#(= |ULTIMATE.start_main_~i~0#1| 0)]) [2023-08-29 02:55:04,380 INFO L383 tUnfolder$Statistics]: this new event has 30 ancestors and is cut-off event [2023-08-29 02:55:04,380 INFO L386 tUnfolder$Statistics]: existing Event has 30 ancestors and is cut-off event [2023-08-29 02:55:04,380 INFO L386 tUnfolder$Statistics]: existing Event has 30 ancestors and is cut-off event [2023-08-29 02:55:04,380 INFO L386 tUnfolder$Statistics]: existing Event has 30 ancestors and is cut-off event [2023-08-29 02:55:04,547 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1426] L702-6-->L702-8: Formula: (= |v_t_funThread2of2ForFork0_#t~nondet6_15| |v_#race~g1~0_65|) InVars {} OutVars{t_funThread2of2ForFork0_#t~nondet6=|v_t_funThread2of2ForFork0_#t~nondet6_15|, #race~g1~0=|v_#race~g1~0_65|} AuxVars[] AssignedVars[t_funThread2of2ForFork0_#t~nondet6, #race~g1~0][41], [34#L712-4true, 247#L702-16true, Black: 290#(= |#race~g1~0| 0), t_funThread1of2ForFork0InUse, 301#(= |#race~g1~0| |t_funThread2of2ForFork0_#t~nondet6|), 294#true, t_funThread2of2ForFork0InUse, Black: 296#(= |t_funThread1of2ForFork0_#t~nondet6| |#race~g1~0|), 127#L702-8true, Black: 285#(= |ULTIMATE.start_main_~i~0#1| 0)]) [2023-08-29 02:55:04,547 INFO L383 tUnfolder$Statistics]: this new event has 32 ancestors and is not cut-off event [2023-08-29 02:55:04,547 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is not cut-off event [2023-08-29 02:55:04,548 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is not cut-off event [2023-08-29 02:55:04,548 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is not cut-off event [2023-08-29 02:55:14,408 INFO L130 PetriNetUnfolder]: 73224/146186 cut-off events. [2023-08-29 02:55:14,409 INFO L131 PetriNetUnfolder]: For 46677/48132 co-relation queries the response was YES. [2023-08-29 02:55:14,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299030 conditions, 146186 events. 73224/146186 cut-off events. For 46677/48132 co-relation queries the response was YES. Maximal size of possible extension queue 2326. Compared 1587199 event pairs, 53410 based on Foata normal form. 1/128998 useless extension candidates. Maximal degree in co-relation 189606. Up to 105162 conditions per place. [2023-08-29 02:55:15,121 INFO L137 encePairwiseOnDemand]: 485/496 looper letters, 144 selfloop transitions, 25 changer transitions 0/239 dead transitions. [2023-08-29 02:55:15,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 239 transitions, 1122 flow [2023-08-29 02:55:15,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:15,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:15,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 895 transitions. [2023-08-29 02:55:15,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6014784946236559 [2023-08-29 02:55:15,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 895 transitions. [2023-08-29 02:55:15,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 895 transitions. [2023-08-29 02:55:15,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:15,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 895 transitions. [2023-08-29 02:55:15,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.3333333333333) internal successors, (895), 3 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 02:55:15,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:55:15,127 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:55:15,127 INFO L175 Difference]: Start difference. First operand has 149 places, 174 transitions, 571 flow. Second operand 3 states and 895 transitions. [2023-08-29 02:55:15,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 239 transitions, 1122 flow [2023-08-29 02:55:15,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 239 transitions, 1097 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 02:55:15,269 INFO L231 Difference]: Finished difference. Result has 152 places, 195 transitions, 804 flow [2023-08-29 02:55:15,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=804, PETRI_PLACES=152, PETRI_TRANSITIONS=195} [2023-08-29 02:55:15,270 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, 7 predicate places. [2023-08-29 02:55:15,270 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 195 transitions, 804 flow [2023-08-29 02:55:15,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states 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 02:55:15,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:15,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:15,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 02:55:15,271 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:55:15,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:15,271 INFO L85 PathProgramCache]: Analyzing trace with hash 903947457, now seen corresponding path program 1 times [2023-08-29 02:55:15,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:15,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805572326] [2023-08-29 02:55:15,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:15,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:15,304 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 02:55:15,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:15,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805572326] [2023-08-29 02:55:15,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805572326] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:55:15,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374304458] [2023-08-29 02:55:15,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:15,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:55:15,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:55:15,306 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 02:55:15,308 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 02:55:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:15,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:55:15,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:55:15,399 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 02:55:15,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:55:15,426 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 02:55:15,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374304458] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:55:15,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:55:15,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:55:15,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622953838] [2023-08-29 02:55:15,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:55:15,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:55:15,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:15,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:55:15,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:55:15,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 496 [2023-08-29 02:55:15,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 195 transitions, 804 flow. Second operand has 7 states, 7 states have (on average 267.85714285714283) internal successors, (1875), 7 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states 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 02:55:15,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:15,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 496 [2023-08-29 02:55:15,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:15,963 INFO L130 PetriNetUnfolder]: 3215/7067 cut-off events. [2023-08-29 02:55:15,963 INFO L131 PetriNetUnfolder]: For 5415/5778 co-relation queries the response was YES. [2023-08-29 02:55:15,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17020 conditions, 7067 events. 3215/7067 cut-off events. For 5415/5778 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 54761 event pairs, 506 based on Foata normal form. 806/7582 useless extension candidates. Maximal degree in co-relation 10067. Up to 4037 conditions per place. [2023-08-29 02:55:15,986 INFO L137 encePairwiseOnDemand]: 493/496 looper letters, 131 selfloop transitions, 3 changer transitions 0/202 dead transitions. [2023-08-29 02:55:15,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 202 transitions, 996 flow [2023-08-29 02:55:15,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 02:55:15,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 02:55:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1435 transitions. [2023-08-29 02:55:15,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5786290322580645 [2023-08-29 02:55:15,990 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1435 transitions. [2023-08-29 02:55:15,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1435 transitions. [2023-08-29 02:55:15,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:15,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1435 transitions. [2023-08-29 02:55:15,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states 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 02:55:15,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 496.0) internal successors, (2976), 6 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states 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 02:55:15,996 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 496.0) internal successors, (2976), 6 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states 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 02:55:15,996 INFO L175 Difference]: Start difference. First operand has 152 places, 195 transitions, 804 flow. Second operand 5 states and 1435 transitions. [2023-08-29 02:55:15,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 202 transitions, 996 flow [2023-08-29 02:55:16,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 202 transitions, 952 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 02:55:16,002 INFO L231 Difference]: Finished difference. Result has 116 places, 127 transitions, 444 flow [2023-08-29 02:55:16,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=444, PETRI_PLACES=116, PETRI_TRANSITIONS=127} [2023-08-29 02:55:16,003 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, -29 predicate places. [2023-08-29 02:55:16,003 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 127 transitions, 444 flow [2023-08-29 02:55:16,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 267.85714285714283) internal successors, (1875), 7 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states 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 02:55:16,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:16,004 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:16,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-29 02:55:16,208 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,SelfDestructingSolverStorable13 [2023-08-29 02:55:16,209 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:55:16,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:16,209 INFO L85 PathProgramCache]: Analyzing trace with hash -15437265, now seen corresponding path program 1 times [2023-08-29 02:55:16,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:16,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690112241] [2023-08-29 02:55:16,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:16,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:55:16,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:16,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690112241] [2023-08-29 02:55:16,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690112241] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:16,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:16,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 02:55:16,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198291392] [2023-08-29 02:55:16,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:16,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 02:55:16,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:16,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 02:55:16,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 02:55:16,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 496 [2023-08-29 02:55:16,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 127 transitions, 444 flow. Second operand has 4 states, 4 states have (on average 259.75) internal successors, (1039), 4 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states 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 02:55:16,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:16,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 496 [2023-08-29 02:55:16,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:16,675 INFO L130 PetriNetUnfolder]: 1717/4127 cut-off events. [2023-08-29 02:55:16,676 INFO L131 PetriNetUnfolder]: For 2146/2146 co-relation queries the response was YES. [2023-08-29 02:55:16,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8894 conditions, 4127 events. 1717/4127 cut-off events. For 2146/2146 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 29691 event pairs, 718 based on Foata normal form. 54/4079 useless extension candidates. Maximal degree in co-relation 5235. Up to 1620 conditions per place. [2023-08-29 02:55:16,690 INFO L137 encePairwiseOnDemand]: 489/496 looper letters, 81 selfloop transitions, 7 changer transitions 0/136 dead transitions. [2023-08-29 02:55:16,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 136 transitions, 559 flow [2023-08-29 02:55:16,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:55:16,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:55:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1116 transitions. [2023-08-29 02:55:16,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2023-08-29 02:55:16,693 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1116 transitions. [2023-08-29 02:55:16,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1116 transitions. [2023-08-29 02:55:16,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:16,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1116 transitions. [2023-08-29 02:55:16,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states 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 02:55:16,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 496.0) internal successors, (2480), 5 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 02:55:16,697 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 496.0) internal successors, (2480), 5 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 02:55:16,697 INFO L175 Difference]: Start difference. First operand has 116 places, 127 transitions, 444 flow. Second operand 4 states and 1116 transitions. [2023-08-29 02:55:16,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 136 transitions, 559 flow [2023-08-29 02:55:16,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 136 transitions, 472 flow, removed 20 selfloop flow, removed 9 redundant places. [2023-08-29 02:55:16,702 INFO L231 Difference]: Finished difference. Result has 105 places, 98 transitions, 239 flow [2023-08-29 02:55:16,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=105, PETRI_TRANSITIONS=98} [2023-08-29 02:55:16,703 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, -40 predicate places. [2023-08-29 02:55:16,703 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 98 transitions, 239 flow [2023-08-29 02:55:16,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 259.75) internal successors, (1039), 4 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states 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 02:55:16,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:16,704 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 02:55:16,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 02:55:16,704 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:55:16,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:16,704 INFO L85 PathProgramCache]: Analyzing trace with hash 635667508, now seen corresponding path program 1 times [2023-08-29 02:55:16,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:16,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302758428] [2023-08-29 02:55:16,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:16,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:16,721 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 02:55:16,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:16,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302758428] [2023-08-29 02:55:16,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302758428] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:16,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:16,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:16,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105664325] [2023-08-29 02:55:16,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:16,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:16,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:16,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:16,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:16,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 496 [2023-08-29 02:55:16,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 98 transitions, 239 flow. Second operand has 3 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 02:55:16,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:16,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 496 [2023-08-29 02:55:16,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:17,062 INFO L130 PetriNetUnfolder]: 1947/4631 cut-off events. [2023-08-29 02:55:17,063 INFO L131 PetriNetUnfolder]: For 768/768 co-relation queries the response was YES. [2023-08-29 02:55:17,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8913 conditions, 4631 events. 1947/4631 cut-off events. For 768/768 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 33508 event pairs, 1823 based on Foata normal form. 0/4385 useless extension candidates. Maximal degree in co-relation 5361. Up to 3107 conditions per place. [2023-08-29 02:55:17,074 INFO L137 encePairwiseOnDemand]: 493/496 looper letters, 66 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-08-29 02:55:17,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 111 transitions, 413 flow [2023-08-29 02:55:17,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 828 transitions. [2023-08-29 02:55:17,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2023-08-29 02:55:17,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 828 transitions. [2023-08-29 02:55:17,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 828 transitions. [2023-08-29 02:55:17,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:17,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 828 transitions. [2023-08-29 02:55:17,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.0) internal successors, (828), 3 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 02:55:17,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:55:17,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:55:17,080 INFO L175 Difference]: Start difference. First operand has 105 places, 98 transitions, 239 flow. Second operand 3 states and 828 transitions. [2023-08-29 02:55:17,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 111 transitions, 413 flow [2023-08-29 02:55:17,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 111 transitions, 412 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 02:55:17,082 INFO L231 Difference]: Finished difference. Result has 105 places, 97 transitions, 240 flow [2023-08-29 02:55:17,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=105, PETRI_TRANSITIONS=97} [2023-08-29 02:55:17,082 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, -40 predicate places. [2023-08-29 02:55:17,082 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 97 transitions, 240 flow [2023-08-29 02:55:17,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 02:55:17,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:17,083 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 02:55:17,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 02:55:17,083 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:55:17,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:17,083 INFO L85 PathProgramCache]: Analyzing trace with hash 203865336, now seen corresponding path program 1 times [2023-08-29 02:55:17,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:17,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534312679] [2023-08-29 02:55:17,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:17,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:17,127 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 02:55:17,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:17,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534312679] [2023-08-29 02:55:17,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534312679] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:17,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:17,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:17,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724140589] [2023-08-29 02:55:17,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:17,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:17,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:17,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:17,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:17,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 496 [2023-08-29 02:55:17,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 97 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states 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 02:55:17,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:17,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 496 [2023-08-29 02:55:17,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:17,417 INFO L130 PetriNetUnfolder]: 1947/4664 cut-off events. [2023-08-29 02:55:17,417 INFO L131 PetriNetUnfolder]: For 837/837 co-relation queries the response was YES. [2023-08-29 02:55:17,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9030 conditions, 4664 events. 1947/4664 cut-off events. For 837/837 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 33827 event pairs, 1829 based on Foata normal form. 0/4424 useless extension candidates. Maximal degree in co-relation 5325. Up to 3119 conditions per place. [2023-08-29 02:55:17,431 INFO L137 encePairwiseOnDemand]: 493/496 looper letters, 64 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2023-08-29 02:55:17,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 108 transitions, 399 flow [2023-08-29 02:55:17,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:17,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 827 transitions. [2023-08-29 02:55:17,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5557795698924731 [2023-08-29 02:55:17,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 827 transitions. [2023-08-29 02:55:17,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 827 transitions. [2023-08-29 02:55:17,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:17,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 827 transitions. [2023-08-29 02:55:17,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 0 states 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 02:55:17,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:55:17,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:55:17,436 INFO L175 Difference]: Start difference. First operand has 105 places, 97 transitions, 240 flow. Second operand 3 states and 827 transitions. [2023-08-29 02:55:17,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 108 transitions, 399 flow [2023-08-29 02:55:17,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 108 transitions, 395 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:55:17,438 INFO L231 Difference]: Finished difference. Result has 104 places, 96 transitions, 238 flow [2023-08-29 02:55:17,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=104, PETRI_TRANSITIONS=96} [2023-08-29 02:55:17,438 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, -41 predicate places. [2023-08-29 02:55:17,438 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 96 transitions, 238 flow [2023-08-29 02:55:17,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states 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 02:55:17,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:17,439 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] [2023-08-29 02:55:17,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-29 02:55:17,439 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:55:17,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:17,439 INFO L85 PathProgramCache]: Analyzing trace with hash 742831376, now seen corresponding path program 1 times [2023-08-29 02:55:17,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:17,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961197914] [2023-08-29 02:55:17,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:17,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:17,470 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 02:55:17,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:17,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961197914] [2023-08-29 02:55:17,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961197914] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:17,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:17,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:17,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657177780] [2023-08-29 02:55:17,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:17,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:17,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:17,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:17,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:17,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 496 [2023-08-29 02:55:17,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 96 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states 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 02:55:17,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:17,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 496 [2023-08-29 02:55:17,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:17,801 INFO L130 PetriNetUnfolder]: 2970/6074 cut-off events. [2023-08-29 02:55:17,801 INFO L131 PetriNetUnfolder]: For 1151/1151 co-relation queries the response was YES. [2023-08-29 02:55:17,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12404 conditions, 6074 events. 2970/6074 cut-off events. For 1151/1151 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 41214 event pairs, 1811 based on Foata normal form. 0/5951 useless extension candidates. Maximal degree in co-relation 8842. Up to 3269 conditions per place. [2023-08-29 02:55:17,818 INFO L137 encePairwiseOnDemand]: 480/496 looper letters, 100 selfloop transitions, 12 changer transitions 0/147 dead transitions. [2023-08-29 02:55:17,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 147 transitions, 591 flow [2023-08-29 02:55:17,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:17,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:17,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 863 transitions. [2023-08-29 02:55:17,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5799731182795699 [2023-08-29 02:55:17,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 863 transitions. [2023-08-29 02:55:17,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 863 transitions. [2023-08-29 02:55:17,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:17,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 863 transitions. [2023-08-29 02:55:17,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states 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 02:55:17,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:55:17,824 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:55:17,824 INFO L175 Difference]: Start difference. First operand has 104 places, 96 transitions, 238 flow. Second operand 3 states and 863 transitions. [2023-08-29 02:55:17,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 147 transitions, 591 flow [2023-08-29 02:55:17,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 147 transitions, 585 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:55:17,826 INFO L231 Difference]: Finished difference. Result has 106 places, 108 transitions, 338 flow [2023-08-29 02:55:17,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=106, PETRI_TRANSITIONS=108} [2023-08-29 02:55:17,826 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, -39 predicate places. [2023-08-29 02:55:17,827 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 108 transitions, 338 flow [2023-08-29 02:55:17,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states 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 02:55:17,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:17,827 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] [2023-08-29 02:55:17,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 02:55:17,827 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:55:17,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:17,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1827017283, now seen corresponding path program 1 times [2023-08-29 02:55:17,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:17,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82186967] [2023-08-29 02:55:17,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:17,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:17,847 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 02:55:17,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:17,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82186967] [2023-08-29 02:55:17,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82186967] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:17,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:17,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:17,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443450120] [2023-08-29 02:55:17,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:17,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:17,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:17,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:17,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:17,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 496 [2023-08-29 02:55:17,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 108 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states 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 02:55:17,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:17,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 496 [2023-08-29 02:55:17,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:18,195 INFO L130 PetriNetUnfolder]: 2476/5412 cut-off events. [2023-08-29 02:55:18,195 INFO L131 PetriNetUnfolder]: For 2516/2534 co-relation queries the response was YES. [2023-08-29 02:55:18,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12377 conditions, 5412 events. 2476/5412 cut-off events. For 2516/2534 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 37875 event pairs, 2132 based on Foata normal form. 0/5268 useless extension candidates. Maximal degree in co-relation 8817. Up to 3917 conditions per place. [2023-08-29 02:55:18,218 INFO L137 encePairwiseOnDemand]: 489/496 looper letters, 81 selfloop transitions, 9 changer transitions 0/136 dead transitions. [2023-08-29 02:55:18,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 136 transitions, 611 flow [2023-08-29 02:55:18,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:18,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 846 transitions. [2023-08-29 02:55:18,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5685483870967742 [2023-08-29 02:55:18,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 846 transitions. [2023-08-29 02:55:18,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 846 transitions. [2023-08-29 02:55:18,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:18,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 846 transitions. [2023-08-29 02:55:18,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 0 states 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 02:55:18,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:55:18,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:55:18,226 INFO L175 Difference]: Start difference. First operand has 106 places, 108 transitions, 338 flow. Second operand 3 states and 846 transitions. [2023-08-29 02:55:18,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 136 transitions, 611 flow [2023-08-29 02:55:18,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 136 transitions, 579 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:55:18,231 INFO L231 Difference]: Finished difference. Result has 107 places, 115 transitions, 383 flow [2023-08-29 02:55:18,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=107, PETRI_TRANSITIONS=115} [2023-08-29 02:55:18,232 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, -38 predicate places. [2023-08-29 02:55:18,232 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 115 transitions, 383 flow [2023-08-29 02:55:18,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states 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 02:55:18,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:18,233 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] [2023-08-29 02:55:18,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-29 02:55:18,233 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:55:18,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:18,234 INFO L85 PathProgramCache]: Analyzing trace with hash -431999577, now seen corresponding path program 1 times [2023-08-29 02:55:18,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:18,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001710770] [2023-08-29 02:55:18,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:18,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:18,262 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 02:55:18,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:18,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001710770] [2023-08-29 02:55:18,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001710770] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:18,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:18,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:18,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835847950] [2023-08-29 02:55:18,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:18,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:18,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:18,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:18,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:18,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 496 [2023-08-29 02:55:18,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 115 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states 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 02:55:18,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:18,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 496 [2023-08-29 02:55:18,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:18,613 INFO L130 PetriNetUnfolder]: 2535/5483 cut-off events. [2023-08-29 02:55:18,613 INFO L131 PetriNetUnfolder]: For 2733/2781 co-relation queries the response was YES. [2023-08-29 02:55:18,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12644 conditions, 5483 events. 2535/5483 cut-off events. For 2733/2781 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 38179 event pairs, 2137 based on Foata normal form. 3/5312 useless extension candidates. Maximal degree in co-relation 9116. Up to 3997 conditions per place. [2023-08-29 02:55:18,634 INFO L137 encePairwiseOnDemand]: 489/496 looper letters, 85 selfloop transitions, 11 changer transitions 0/142 dead transitions. [2023-08-29 02:55:18,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 142 transitions, 659 flow [2023-08-29 02:55:18,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:18,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:18,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 846 transitions. [2023-08-29 02:55:18,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5685483870967742 [2023-08-29 02:55:18,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 846 transitions. [2023-08-29 02:55:18,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 846 transitions. [2023-08-29 02:55:18,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:18,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 846 transitions. [2023-08-29 02:55:18,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 0 states 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 02:55:18,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:55:18,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:55:18,639 INFO L175 Difference]: Start difference. First operand has 107 places, 115 transitions, 383 flow. Second operand 3 states and 846 transitions. [2023-08-29 02:55:18,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 142 transitions, 659 flow [2023-08-29 02:55:18,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 142 transitions, 648 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 02:55:18,645 INFO L231 Difference]: Finished difference. Result has 109 places, 122 transitions, 453 flow [2023-08-29 02:55:18,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=453, PETRI_PLACES=109, PETRI_TRANSITIONS=122} [2023-08-29 02:55:18,645 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, -36 predicate places. [2023-08-29 02:55:18,646 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 122 transitions, 453 flow [2023-08-29 02:55:18,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states 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 02:55:18,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:18,646 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, 1, 1, 1] [2023-08-29 02:55:18,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-29 02:55:18,646 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr7ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:55:18,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:18,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1222593522, now seen corresponding path program 1 times [2023-08-29 02:55:18,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:18,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544055975] [2023-08-29 02:55:18,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:18,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:18,678 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 02:55:18,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:18,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544055975] [2023-08-29 02:55:18,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544055975] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:18,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:18,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:18,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628073237] [2023-08-29 02:55:18,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:18,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:18,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:18,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:18,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:18,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 496 [2023-08-29 02:55:18,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 122 transitions, 453 flow. Second operand has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states 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 02:55:18,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:18,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 496 [2023-08-29 02:55:18,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:19,054 INFO L130 PetriNetUnfolder]: 2641/5649 cut-off events. [2023-08-29 02:55:19,054 INFO L131 PetriNetUnfolder]: For 3887/3989 co-relation queries the response was YES. [2023-08-29 02:55:19,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13684 conditions, 5649 events. 2641/5649 cut-off events. For 3887/3989 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 38923 event pairs, 2034 based on Foata normal form. 3/5463 useless extension candidates. Maximal degree in co-relation 10059. Up to 3921 conditions per place. [2023-08-29 02:55:19,072 INFO L137 encePairwiseOnDemand]: 488/496 looper letters, 89 selfloop transitions, 12 changer transitions 5/152 dead transitions. [2023-08-29 02:55:19,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 152 transitions, 777 flow [2023-08-29 02:55:19,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:19,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 847 transitions. [2023-08-29 02:55:19,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5692204301075269 [2023-08-29 02:55:19,074 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 847 transitions. [2023-08-29 02:55:19,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 847 transitions. [2023-08-29 02:55:19,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:19,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 847 transitions. [2023-08-29 02:55:19,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states 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 02:55:19,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:55:19,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:55:19,077 INFO L175 Difference]: Start difference. First operand has 109 places, 122 transitions, 453 flow. Second operand 3 states and 847 transitions. [2023-08-29 02:55:19,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 152 transitions, 777 flow [2023-08-29 02:55:19,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 152 transitions, 763 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 02:55:19,084 INFO L231 Difference]: Finished difference. Result has 112 places, 128 transitions, 543 flow [2023-08-29 02:55:19,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=543, PETRI_PLACES=112, PETRI_TRANSITIONS=128} [2023-08-29 02:55:19,084 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, -33 predicate places. [2023-08-29 02:55:19,084 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 128 transitions, 543 flow [2023-08-29 02:55:19,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.6666666666667) internal successors, (794), 3 states have internal predecessors, (794), 0 states have call successors, (0), 0 states 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 02:55:19,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:19,085 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, 1, 1, 1] [2023-08-29 02:55:19,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-29 02:55:19,085 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr7ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:55:19,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:19,085 INFO L85 PathProgramCache]: Analyzing trace with hash 392597803, now seen corresponding path program 1 times [2023-08-29 02:55:19,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:19,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147562049] [2023-08-29 02:55:19,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:19,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:19,120 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 02:55:19,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:19,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147562049] [2023-08-29 02:55:19,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147562049] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:19,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:19,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:19,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018033868] [2023-08-29 02:55:19,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:19,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:19,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:19,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:19,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:19,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 496 [2023-08-29 02:55:19,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 128 transitions, 543 flow. Second operand has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states 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 02:55:19,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:19,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 496 [2023-08-29 02:55:19,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:19,483 INFO L130 PetriNetUnfolder]: 2650/5625 cut-off events. [2023-08-29 02:55:19,483 INFO L131 PetriNetUnfolder]: For 5966/6131 co-relation queries the response was YES. [2023-08-29 02:55:19,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14663 conditions, 5625 events. 2650/5625 cut-off events. For 5966/6131 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 38385 event pairs, 2094 based on Foata normal form. 9/5427 useless extension candidates. Maximal degree in co-relation 11172. Up to 4128 conditions per place. [2023-08-29 02:55:19,501 INFO L137 encePairwiseOnDemand]: 489/496 looper letters, 88 selfloop transitions, 13 changer transitions 9/156 dead transitions. [2023-08-29 02:55:19,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 156 transitions, 877 flow [2023-08-29 02:55:19,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:19,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:19,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 846 transitions. [2023-08-29 02:55:19,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5685483870967742 [2023-08-29 02:55:19,503 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 846 transitions. [2023-08-29 02:55:19,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 846 transitions. [2023-08-29 02:55:19,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:19,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 846 transitions. [2023-08-29 02:55:19,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 0 states 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 02:55:19,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:55:19,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 02:55:19,506 INFO L175 Difference]: Start difference. First operand has 112 places, 128 transitions, 543 flow. Second operand 3 states and 846 transitions. [2023-08-29 02:55:19,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 156 transitions, 877 flow [2023-08-29 02:55:19,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 156 transitions, 833 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-29 02:55:19,515 INFO L231 Difference]: Finished difference. Result has 113 places, 130 transitions, 587 flow [2023-08-29 02:55:19,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=587, PETRI_PLACES=113, PETRI_TRANSITIONS=130} [2023-08-29 02:55:19,516 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, -32 predicate places. [2023-08-29 02:55:19,516 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 130 transitions, 587 flow [2023-08-29 02:55:19,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states 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 02:55:19,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:19,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:19,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-29 02:55:19,516 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:55:19,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:19,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1809356059, now seen corresponding path program 1 times [2023-08-29 02:55:19,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:19,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376054742] [2023-08-29 02:55:19,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:19,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:19,644 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 02:55:19,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:19,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376054742] [2023-08-29 02:55:19,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376054742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:19,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:19,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 02:55:19,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964901855] [2023-08-29 02:55:19,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:19,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 02:55:19,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:19,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 02:55:19,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 02:55:19,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 496 [2023-08-29 02:55:19,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 130 transitions, 587 flow. Second operand has 4 states, 4 states have (on average 248.25) internal successors, (993), 4 states have internal predecessors, (993), 0 states have call successors, (0), 0 states 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 02:55:19,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:19,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 496 [2023-08-29 02:55:19,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:20,048 INFO L130 PetriNetUnfolder]: 2087/4997 cut-off events. [2023-08-29 02:55:20,048 INFO L131 PetriNetUnfolder]: For 6741/6879 co-relation queries the response was YES. [2023-08-29 02:55:20,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13269 conditions, 4997 events. 2087/4997 cut-off events. For 6741/6879 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 35393 event pairs, 645 based on Foata normal form. 291/5141 useless extension candidates. Maximal degree in co-relation 10458. Up to 2204 conditions per place. [2023-08-29 02:55:20,062 INFO L137 encePairwiseOnDemand]: 477/496 looper letters, 77 selfloop transitions, 19 changer transitions 8/161 dead transitions. [2023-08-29 02:55:20,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 161 transitions, 959 flow [2023-08-29 02:55:20,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:55:20,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:55:20,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1042 transitions. [2023-08-29 02:55:20,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252016129032258 [2023-08-29 02:55:20,064 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1042 transitions. [2023-08-29 02:55:20,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1042 transitions. [2023-08-29 02:55:20,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:20,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1042 transitions. [2023-08-29 02:55:20,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 260.5) internal successors, (1042), 4 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states 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 02:55:20,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 496.0) internal successors, (2480), 5 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 02:55:20,067 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 496.0) internal successors, (2480), 5 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 02:55:20,067 INFO L175 Difference]: Start difference. First operand has 113 places, 130 transitions, 587 flow. Second operand 4 states and 1042 transitions. [2023-08-29 02:55:20,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 161 transitions, 959 flow [2023-08-29 02:55:20,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 161 transitions, 923 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-29 02:55:20,075 INFO L231 Difference]: Finished difference. Result has 115 places, 132 transitions, 626 flow [2023-08-29 02:55:20,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=626, PETRI_PLACES=115, PETRI_TRANSITIONS=132} [2023-08-29 02:55:20,075 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, -30 predicate places. [2023-08-29 02:55:20,075 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 132 transitions, 626 flow [2023-08-29 02:55:20,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 248.25) internal successors, (993), 4 states have internal predecessors, (993), 0 states have call successors, (0), 0 states 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 02:55:20,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:20,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:20,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-29 02:55:20,076 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 02:55:20,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:20,076 INFO L85 PathProgramCache]: Analyzing trace with hash 2144338961, now seen corresponding path program 2 times [2023-08-29 02:55:20,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:20,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927874177] [2023-08-29 02:55:20,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:20,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:20,196 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 02:55:20,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:20,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927874177] [2023-08-29 02:55:20,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927874177] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:20,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:20,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 02:55:20,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857318378] [2023-08-29 02:55:20,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:20,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 02:55:20,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:20,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 02:55:20,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 02:55:20,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 496 [2023-08-29 02:55:20,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 132 transitions, 626 flow. Second operand has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 02:55:20,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:20,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 496 [2023-08-29 02:55:20,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:20,463 INFO L130 PetriNetUnfolder]: 686/2080 cut-off events. [2023-08-29 02:55:20,463 INFO L131 PetriNetUnfolder]: For 1871/1874 co-relation queries the response was YES. [2023-08-29 02:55:20,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5374 conditions, 2080 events. 686/2080 cut-off events. For 1871/1874 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 12995 event pairs, 199 based on Foata normal form. 99/2164 useless extension candidates. Maximal degree in co-relation 2789. Up to 1018 conditions per place. [2023-08-29 02:55:20,468 INFO L137 encePairwiseOnDemand]: 491/496 looper letters, 0 selfloop transitions, 0 changer transitions 110/110 dead transitions. [2023-08-29 02:55:20,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 110 transitions, 569 flow [2023-08-29 02:55:20,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:55:20,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:55:20,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1054 transitions. [2023-08-29 02:55:20,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2023-08-29 02:55:20,469 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1054 transitions. [2023-08-29 02:55:20,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1054 transitions. [2023-08-29 02:55:20,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:20,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1054 transitions. [2023-08-29 02:55:20,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 263.5) internal successors, (1054), 4 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states 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 02:55:20,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 496.0) internal successors, (2480), 5 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 02:55:20,473 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 496.0) internal successors, (2480), 5 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states 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 02:55:20,473 INFO L175 Difference]: Start difference. First operand has 115 places, 132 transitions, 626 flow. Second operand 4 states and 1054 transitions. [2023-08-29 02:55:20,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 110 transitions, 569 flow [2023-08-29 02:55:20,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 110 transitions, 494 flow, removed 21 selfloop flow, removed 11 redundant places. [2023-08-29 02:55:20,478 INFO L231 Difference]: Finished difference. Result has 99 places, 0 transitions, 0 flow [2023-08-29 02:55:20,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=99, PETRI_TRANSITIONS=0} [2023-08-29 02:55:20,478 INFO L281 CegarLoopForPetriNet]: 145 programPoint places, -46 predicate places. [2023-08-29 02:55:20,478 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 0 transitions, 0 flow [2023-08-29 02:55:20,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 02:55:20,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (28 of 29 remaining) [2023-08-29 02:55:20,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2023-08-29 02:55:20,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2023-08-29 02:55:20,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2023-08-29 02:55:20,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2023-08-29 02:55:20,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2023-08-29 02:55:20,479 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2023-08-29 02:55:20,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2023-08-29 02:55:20,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2023-08-29 02:55:20,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2023-08-29 02:55:20,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2023-08-29 02:55:20,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2023-08-29 02:55:20,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2023-08-29 02:55:20,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2023-08-29 02:55:20,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2023-08-29 02:55:20,480 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2023-08-29 02:55:20,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2023-08-29 02:55:20,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2023-08-29 02:55:20,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2023-08-29 02:55:20,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2023-08-29 02:55:20,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2023-08-29 02:55:20,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2023-08-29 02:55:20,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2023-08-29 02:55:20,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2023-08-29 02:55:20,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2023-08-29 02:55:20,481 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2023-08-29 02:55:20,482 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2023-08-29 02:55:20,482 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2023-08-29 02:55:20,482 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2023-08-29 02:55:20,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-29 02:55:20,482 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:20,483 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 02:55:20,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 317 transitions, 652 flow [2023-08-29 02:55:20,516 INFO L130 PetriNetUnfolder]: 76/545 cut-off events. [2023-08-29 02:55:20,517 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:55:20,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 545 events. 76/545 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2713 event pairs, 0 based on Foata normal form. 0/433 useless extension candidates. Maximal degree in co-relation 331. Up to 9 conditions per place. [2023-08-29 02:55:20,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 280 places, 317 transitions, 652 flow [2023-08-29 02:55:20,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 317 transitions, 652 flow [2023-08-29 02:55:20,523 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:55:20,523 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 280 places, 317 transitions, 652 flow [2023-08-29 02:55:20,524 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 280 places, 317 transitions, 652 flow [2023-08-29 02:55:20,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 317 transitions, 652 flow [2023-08-29 02:55:20,556 INFO L130 PetriNetUnfolder]: 76/545 cut-off events. [2023-08-29 02:55:20,556 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:55:20,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 545 events. 76/545 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2713 event pairs, 0 based on Foata normal form. 0/433 useless extension candidates. Maximal degree in co-relation 331. Up to 9 conditions per place. [2023-08-29 02:55:20,572 INFO L119 LiptonReduction]: Number of co-enabled transitions 52020 [2023-08-29 02:55:23,503 INFO L134 LiptonReduction]: Checked pairs total: 234764 [2023-08-29 02:55:23,503 INFO L136 LiptonReduction]: Total number of compositions: 179 [2023-08-29 02:55:23,504 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:55:23,505 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;@71258320, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:55:23,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 02:55:23,511 INFO L130 PetriNetUnfolder]: 17/116 cut-off events. [2023-08-29 02:55:23,511 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 02:55:23,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:23,512 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 02:55:23,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:55:23,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:23,512 INFO L85 PathProgramCache]: Analyzing trace with hash 474295222, now seen corresponding path program 1 times [2023-08-29 02:55:23,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:23,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794323615] [2023-08-29 02:55:23,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:23,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:55:23,523 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:55:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:55:23,533 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:55:23,533 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:55:23,534 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 02:55:23,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-29 02:55:23,534 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:55:23,534 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 02:55:23,535 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:55:23,535 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 02:55:23,559 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 02:55:23,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 356 places, 404 transitions, 838 flow [2023-08-29 02:55:23,652 INFO L130 PetriNetUnfolder]: 112/804 cut-off events. [2023-08-29 02:55:23,652 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 02:55:23,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 804 events. 112/804 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4185 event pairs, 1 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 553. Up to 16 conditions per place. [2023-08-29 02:55:23,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 356 places, 404 transitions, 838 flow [2023-08-29 02:55:23,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 356 places, 404 transitions, 838 flow [2023-08-29 02:55:23,667 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:55:23,667 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 356 places, 404 transitions, 838 flow [2023-08-29 02:55:23,667 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 356 places, 404 transitions, 838 flow [2023-08-29 02:55:23,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 356 places, 404 transitions, 838 flow [2023-08-29 02:55:23,736 INFO L130 PetriNetUnfolder]: 112/804 cut-off events. [2023-08-29 02:55:23,737 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 02:55:23,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 804 events. 112/804 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4185 event pairs, 1 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 553. Up to 16 conditions per place. [2023-08-29 02:55:23,774 INFO L119 LiptonReduction]: Number of co-enabled transitions 100470 [2023-08-29 02:55:26,934 INFO L134 LiptonReduction]: Checked pairs total: 487746 [2023-08-29 02:55:26,934 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-08-29 02:55:26,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:55:26,937 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;@71258320, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:55:26,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-08-29 02:55:26,940 INFO L130 PetriNetUnfolder]: 1/15 cut-off events. [2023-08-29 02:55:26,940 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:55:26,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:26,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 02:55:26,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr6ASSERT_VIOLATIONDATA_RACE, t_funErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-08-29 02:55:26,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:26,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1948241722, now seen corresponding path program 1 times [2023-08-29 02:55:26,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:26,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899448862] [2023-08-29 02:55:26,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:26,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:26,987 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 02:55:26,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:26,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899448862] [2023-08-29 02:55:26,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899448862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:26,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:26,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:26,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156109662] [2023-08-29 02:55:26,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:26,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:26,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:26,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:26,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:26,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 620 [2023-08-29 02:55:26,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 239 transitions, 508 flow. Second operand has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 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 02:55:26,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:26,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 620 [2023-08-29 02:55:26,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand