./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_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 af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 18:22:57,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:22:57,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:22:57,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:22:57,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:22:57,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:22:57,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:22:57,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:22:57,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:22:57,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:22:57,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:22:57,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:22:57,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:22:57,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:22:57,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:22:57,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:22:57,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:22:57,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:22:57,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:22:57,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:22:57,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:22:57,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:22:57,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:22:57,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:22:57,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:22:57,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:22:57,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:22:57,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:22:57,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:22:57,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:22:57,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:22:57,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:22:57,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:22:57,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:22:57,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:22:57,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:22:57,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:22:57,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:22:57,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:22:57,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:22:57,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:22:57,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:22:57,855 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:22:57,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:22:57,857 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:22:57,857 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:22:57,858 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:22:57,858 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:22:57,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:22:57,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:22:57,859 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:22:57,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:22:57,860 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:22:57,860 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:22:57,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:22:57,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:22:57,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:22:57,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:22:57,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:22:57,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:22:57,861 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:22:57,862 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:22:57,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:22:57,862 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:22:57,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:22:57,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:22:57,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:22:57,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:22:57,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:22:57,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:22:57,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:22:57,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:22:57,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:22:57,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:22:57,864 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:22:57,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:22:57,865 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:22:57,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:22:57,865 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:22:57,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:22:58,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:22:58,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:22:58,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:22:58,183 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:22:58,183 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:22:58,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-08-29 18:22:59,433 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:22:59,663 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:22:59,664 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-08-29 18:22:59,674 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdc5f11d2/cd53a4fdd7b740e69d497f53652dc264/FLAG87582736c [2023-08-29 18:22:59,690 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdc5f11d2/cd53a4fdd7b740e69d497f53652dc264 [2023-08-29 18:22:59,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:22:59,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:22:59,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:22:59,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:22:59,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:22:59,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:22:59" (1/1) ... [2023-08-29 18:22:59,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dd12a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:22:59, skipping insertion in model container [2023-08-29 18:22:59,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:22:59" (1/1) ... [2023-08-29 18:22:59,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:22:59,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:22:59,970 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_41-trylock_racefree.i[30176,30189] [2023-08-29 18:22:59,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:23:00,003 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:23:00,054 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_41-trylock_racefree.i[30176,30189] [2023-08-29 18:23:00,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:23:00,131 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:23:00,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:23:00 WrapperNode [2023-08-29 18:23:00,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:23:00,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:23:00,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:23:00,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:23:00,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:23:00" (1/1) ... [2023-08-29 18:23:00,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:23:00" (1/1) ... [2023-08-29 18:23:00,199 INFO L138 Inliner]: procedures = 171, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2023-08-29 18:23:00,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:23:00,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:23:00,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:23:00,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:23:00,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:23:00" (1/1) ... [2023-08-29 18:23:00,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:23:00" (1/1) ... [2023-08-29 18:23:00,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:23:00" (1/1) ... [2023-08-29 18:23:00,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:23:00" (1/1) ... [2023-08-29 18:23:00,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:23:00" (1/1) ... [2023-08-29 18:23:00,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:23:00" (1/1) ... [2023-08-29 18:23:00,252 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:23:00" (1/1) ... [2023-08-29 18:23:00,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:23:00" (1/1) ... [2023-08-29 18:23:00,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:23:00,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:23:00,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:23:00,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:23:00,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:23:00" (1/1) ... [2023-08-29 18:23:00,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:23:00,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:23:00,294 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 18:23:00,321 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 18:23:00,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:23:00,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:23:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:23:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:23:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:23:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:23:00,336 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:23:00,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:23:00,337 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-29 18:23:00,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:23:00,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:23:00,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:23:00,338 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 18:23:00,516 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:23:00,531 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:23:00,728 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:23:00,736 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:23:00,737 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-29 18:23:00,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:23:00 BoogieIcfgContainer [2023-08-29 18:23:00,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:23:00,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:23:00,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:23:00,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:23:00,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:22:59" (1/3) ... [2023-08-29 18:23:00,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e8d444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:23:00, skipping insertion in model container [2023-08-29 18:23:00,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:23:00" (2/3) ... [2023-08-29 18:23:00,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e8d444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:23:00, skipping insertion in model container [2023-08-29 18:23:00,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:23:00" (3/3) ... [2023-08-29 18:23:00,748 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2023-08-29 18:23:00,755 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:23:00,762 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:23:00,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-29 18:23:00,762 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:23:00,821 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 18:23:00,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 127 transitions, 262 flow [2023-08-29 18:23:00,915 INFO L130 PetriNetUnfolder]: 21/172 cut-off events. [2023-08-29 18:23:00,916 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:23:00,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 172 events. 21/172 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 520 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 94. Up to 6 conditions per place. [2023-08-29 18:23:00,923 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 127 transitions, 262 flow [2023-08-29 18:23:00,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 127 transitions, 262 flow [2023-08-29 18:23:00,931 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:23:00,939 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 127 transitions, 262 flow [2023-08-29 18:23:00,942 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 127 transitions, 262 flow [2023-08-29 18:23:00,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 127 transitions, 262 flow [2023-08-29 18:23:00,970 INFO L130 PetriNetUnfolder]: 21/172 cut-off events. [2023-08-29 18:23:00,971 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:23:00,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 172 events. 21/172 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 520 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 94. Up to 6 conditions per place. [2023-08-29 18:23:00,975 INFO L119 LiptonReduction]: Number of co-enabled transitions 4488 [2023-08-29 18:23:03,553 INFO L134 LiptonReduction]: Checked pairs total: 11399 [2023-08-29 18:23:03,554 INFO L136 LiptonReduction]: Total number of compositions: 90 [2023-08-29 18:23:03,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:23:03,572 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;@2c427f32, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:23:03,572 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-29 18:23:03,576 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2023-08-29 18:23:03,577 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:23:03,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:23:03,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 18:23:03,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-29 18:23:03,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:23:03,582 INFO L85 PathProgramCache]: Analyzing trace with hash 455846171, now seen corresponding path program 1 times [2023-08-29 18:23:03,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:23:03,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948550617] [2023-08-29 18:23:03,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:23:03,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:23:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:23:03,819 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 18:23:03,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:23:03,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948550617] [2023-08-29 18:23:03,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948550617] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:23:03,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:23:03,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:23:03,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901328724] [2023-08-29 18:23:03,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:23:03,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:23:03,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:23:03,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:23:03,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:23:03,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 217 [2023-08-29 18:23:03,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 51 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:03,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:23:03,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 217 [2023-08-29 18:23:03,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:23:03,959 INFO L130 PetriNetUnfolder]: 145/368 cut-off events. [2023-08-29 18:23:03,959 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:23:03,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 368 events. 145/368 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1705 event pairs, 0 based on Foata normal form. 49/348 useless extension candidates. Maximal degree in co-relation 648. Up to 293 conditions per place. [2023-08-29 18:23:03,963 INFO L137 encePairwiseOnDemand]: 204/217 looper letters, 37 selfloop transitions, 2 changer transitions 2/54 dead transitions. [2023-08-29 18:23:03,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 198 flow [2023-08-29 18:23:03,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:23:03,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:23:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2023-08-29 18:23:03,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5867895545314901 [2023-08-29 18:23:03,978 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2023-08-29 18:23:03,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2023-08-29 18:23:03,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:23:03,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2023-08-29 18:23:03,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:03,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:03,991 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:03,993 INFO L175 Difference]: Start difference. First operand has 43 places, 51 transitions, 110 flow. Second operand 3 states and 382 transitions. [2023-08-29 18:23:03,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 198 flow [2023-08-29 18:23:03,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:23:03,999 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 91 flow [2023-08-29 18:23:04,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-29 18:23:04,004 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-08-29 18:23:04,004 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 91 flow [2023-08-29 18:23:04,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:04,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:23:04,005 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 18:23:04,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:23:04,005 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-29 18:23:04,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:23:04,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1277311542, now seen corresponding path program 1 times [2023-08-29 18:23:04,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:23:04,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740474413] [2023-08-29 18:23:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:23:04,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:23:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:23:04,041 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:23:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:23:04,085 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:23:04,086 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:23:04,093 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-08-29 18:23:04,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2023-08-29 18:23:04,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2023-08-29 18:23:04,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2023-08-29 18:23:04,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2023-08-29 18:23:04,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2023-08-29 18:23:04,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2023-08-29 18:23:04,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2023-08-29 18:23:04,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2023-08-29 18:23:04,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2023-08-29 18:23:04,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2023-08-29 18:23:04,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 18:23:04,103 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 18:23:04,106 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:23:04,107 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:23:04,146 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 18:23:04,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 173 transitions, 364 flow [2023-08-29 18:23:04,205 INFO L130 PetriNetUnfolder]: 37/293 cut-off events. [2023-08-29 18:23:04,206 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:23:04,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 293 events. 37/293 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1027 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 174. Up to 9 conditions per place. [2023-08-29 18:23:04,211 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 173 transitions, 364 flow [2023-08-29 18:23:04,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 173 transitions, 364 flow [2023-08-29 18:23:04,214 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:23:04,214 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 173 transitions, 364 flow [2023-08-29 18:23:04,215 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 173 transitions, 364 flow [2023-08-29 18:23:04,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 173 transitions, 364 flow [2023-08-29 18:23:04,257 INFO L130 PetriNetUnfolder]: 37/293 cut-off events. [2023-08-29 18:23:04,257 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:23:04,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 293 events. 37/293 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1027 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 174. Up to 9 conditions per place. [2023-08-29 18:23:04,269 INFO L119 LiptonReduction]: Number of co-enabled transitions 13816 [2023-08-29 18:23:06,737 INFO L134 LiptonReduction]: Checked pairs total: 52978 [2023-08-29 18:23:06,738 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-08-29 18:23:06,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:23:06,741 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;@2c427f32, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:23:06,741 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-29 18:23:06,743 INFO L130 PetriNetUnfolder]: 1/11 cut-off events. [2023-08-29 18:23:06,743 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:23:06,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:23:06,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 18:23:06,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-29 18:23:06,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:23:06,744 INFO L85 PathProgramCache]: Analyzing trace with hash 766801516, now seen corresponding path program 1 times [2023-08-29 18:23:06,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:23:06,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900024396] [2023-08-29 18:23:06,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:23:06,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:23:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:23:06,783 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 18:23:06,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:23:06,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900024396] [2023-08-29 18:23:06,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900024396] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:23:06,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:23:06,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:23:06,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236346818] [2023-08-29 18:23:06,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:23:06,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:23:06,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:23:06,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:23:06,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:23:06,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 280 [2023-08-29 18:23:06,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 86 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:06,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:23:06,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 280 [2023-08-29 18:23:06,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:23:07,350 INFO L130 PetriNetUnfolder]: 2834/5913 cut-off events. [2023-08-29 18:23:07,352 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-08-29 18:23:07,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10477 conditions, 5913 events. 2834/5913 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 45545 event pairs, 1250 based on Foata normal form. 413/5478 useless extension candidates. Maximal degree in co-relation 904. Up to 4467 conditions per place. [2023-08-29 18:23:07,386 INFO L137 encePairwiseOnDemand]: 261/280 looper letters, 48 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2023-08-29 18:23:07,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 82 transitions, 282 flow [2023-08-29 18:23:07,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:23:07,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:23:07,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-08-29 18:23:07,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2023-08-29 18:23:07,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-08-29 18:23:07,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-08-29 18:23:07,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:23:07,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-08-29 18:23:07,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:07,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:07,398 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:07,398 INFO L175 Difference]: Start difference. First operand has 73 places, 86 transitions, 190 flow. Second operand 3 states and 511 transitions. [2023-08-29 18:23:07,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 82 transitions, 282 flow [2023-08-29 18:23:07,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 82 transitions, 282 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:23:07,406 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 170 flow [2023-08-29 18:23:07,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2023-08-29 18:23:07,407 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 2 predicate places. [2023-08-29 18:23:07,407 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 170 flow [2023-08-29 18:23:07,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:07,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:23:07,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:23:07,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 18:23:07,409 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-29 18:23:07,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:23:07,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1902958349, now seen corresponding path program 1 times [2023-08-29 18:23:07,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:23:07,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421240556] [2023-08-29 18:23:07,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:23:07,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:23:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:23:07,476 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 18:23:07,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:23:07,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421240556] [2023-08-29 18:23:07,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421240556] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:23:07,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:23:07,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:23:07,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797805403] [2023-08-29 18:23:07,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:23:07,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:23:07,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:23:07,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:23:07,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:23:07,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 280 [2023-08-29 18:23:07,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:07,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:23:07,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 280 [2023-08-29 18:23:07,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:23:09,120 INFO L130 PetriNetUnfolder]: 12468/21526 cut-off events. [2023-08-29 18:23:09,121 INFO L131 PetriNetUnfolder]: For 928/928 co-relation queries the response was YES. [2023-08-29 18:23:09,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42219 conditions, 21526 events. 12468/21526 cut-off events. For 928/928 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 160630 event pairs, 4675 based on Foata normal form. 0/19215 useless extension candidates. Maximal degree in co-relation 42108. Up to 10295 conditions per place. [2023-08-29 18:23:09,276 INFO L137 encePairwiseOnDemand]: 261/280 looper letters, 91 selfloop transitions, 14 changer transitions 0/120 dead transitions. [2023-08-29 18:23:09,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 120 transitions, 496 flow [2023-08-29 18:23:09,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:23:09,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:23:09,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 501 transitions. [2023-08-29 18:23:09,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964285714285714 [2023-08-29 18:23:09,280 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 501 transitions. [2023-08-29 18:23:09,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 501 transitions. [2023-08-29 18:23:09,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:23:09,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 501 transitions. [2023-08-29 18:23:09,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:09,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:09,286 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:09,286 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 170 flow. Second operand 3 states and 501 transitions. [2023-08-29 18:23:09,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 120 transitions, 496 flow [2023-08-29 18:23:09,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 120 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:23:09,292 INFO L231 Difference]: Finished difference. Result has 78 places, 85 transitions, 290 flow [2023-08-29 18:23:09,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=78, PETRI_TRANSITIONS=85} [2023-08-29 18:23:09,295 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2023-08-29 18:23:09,295 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 85 transitions, 290 flow [2023-08-29 18:23:09,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:09,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:23:09,296 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 18:23:09,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:23:09,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-08-29 18:23:09,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:23:09,297 INFO L85 PathProgramCache]: Analyzing trace with hash 188006470, now seen corresponding path program 1 times [2023-08-29 18:23:09,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:23:09,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509408611] [2023-08-29 18:23:09,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:23:09,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:23:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:23:09,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:23:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:23:09,373 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:23:09,373 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:23:09,373 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-08-29 18:23:09,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-08-29 18:23:09,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-08-29 18:23:09,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-08-29 18:23:09,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-08-29 18:23:09,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2023-08-29 18:23:09,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-08-29 18:23:09,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-08-29 18:23:09,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-08-29 18:23:09,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2023-08-29 18:23:09,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2023-08-29 18:23:09,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-08-29 18:23:09,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-08-29 18:23:09,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-08-29 18:23:09,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-08-29 18:23:09,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 18:23:09,377 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-29 18:23:09,378 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:23:09,378 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 18:23:09,407 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 18:23:09,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 219 transitions, 468 flow [2023-08-29 18:23:09,471 INFO L130 PetriNetUnfolder]: 58/457 cut-off events. [2023-08-29 18:23:09,471 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:23:09,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 457 events. 58/457 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1745 event pairs, 1 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2023-08-29 18:23:09,476 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 219 transitions, 468 flow [2023-08-29 18:23:09,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 219 transitions, 468 flow [2023-08-29 18:23:09,480 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:23:09,480 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 219 transitions, 468 flow [2023-08-29 18:23:09,481 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 219 transitions, 468 flow [2023-08-29 18:23:09,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 219 transitions, 468 flow [2023-08-29 18:23:09,531 INFO L130 PetriNetUnfolder]: 58/457 cut-off events. [2023-08-29 18:23:09,532 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:23:09,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 457 events. 58/457 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1745 event pairs, 1 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2023-08-29 18:23:09,557 INFO L119 LiptonReduction]: Number of co-enabled transitions 26928 [2023-08-29 18:23:11,988 INFO L134 LiptonReduction]: Checked pairs total: 110927 [2023-08-29 18:23:11,988 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-08-29 18:23:11,990 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:23:11,990 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;@2c427f32, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:23:11,991 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-29 18:23:11,992 INFO L130 PetriNetUnfolder]: 1/11 cut-off events. [2023-08-29 18:23:11,992 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:23:11,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:23:11,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 18:23:11,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-29 18:23:11,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:23:11,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1140710113, now seen corresponding path program 1 times [2023-08-29 18:23:11,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:23:11,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822983569] [2023-08-29 18:23:11,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:23:11,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:23:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:23:12,031 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 18:23:12,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:23:12,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822983569] [2023-08-29 18:23:12,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822983569] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:23:12,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:23:12,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:23:12,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406337488] [2023-08-29 18:23:12,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:23:12,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:23:12,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:23:12,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:23:12,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:23:12,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 346 [2023-08-29 18:23:12,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 117 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:12,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:23:12,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 346 [2023-08-29 18:23:12,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:23:17,666 INFO L130 PetriNetUnfolder]: 48690/78322 cut-off events. [2023-08-29 18:23:17,667 INFO L131 PetriNetUnfolder]: For 1374/1374 co-relation queries the response was YES. [2023-08-29 18:23:17,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146778 conditions, 78322 events. 48690/78322 cut-off events. For 1374/1374 co-relation queries the response was YES. Maximal size of possible extension queue 1977. Compared 676667 event pairs, 43761 based on Foata normal form. 14303/83213 useless extension candidates. Maximal degree in co-relation 60990. Up to 67428 conditions per place. [2023-08-29 18:23:18,194 INFO L137 encePairwiseOnDemand]: 321/346 looper letters, 60 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-29 18:23:18,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 107 transitions, 368 flow [2023-08-29 18:23:18,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:23:18,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:23:18,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 643 transitions. [2023-08-29 18:23:18,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6194605009633911 [2023-08-29 18:23:18,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 643 transitions. [2023-08-29 18:23:18,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 643 transitions. [2023-08-29 18:23:18,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:23:18,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 643 transitions. [2023-08-29 18:23:18,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:18,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:18,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:18,203 INFO L175 Difference]: Start difference. First operand has 99 places, 117 transitions, 264 flow. Second operand 3 states and 643 transitions. [2023-08-29 18:23:18,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 107 transitions, 368 flow [2023-08-29 18:23:18,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 107 transitions, 368 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:23:18,210 INFO L231 Difference]: Finished difference. Result has 101 places, 96 transitions, 232 flow [2023-08-29 18:23:18,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=101, PETRI_TRANSITIONS=96} [2023-08-29 18:23:18,213 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 2 predicate places. [2023-08-29 18:23:18,215 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 96 transitions, 232 flow [2023-08-29 18:23:18,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:18,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:23:18,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:23:18,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 18:23:18,216 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-29 18:23:18,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:23:18,217 INFO L85 PathProgramCache]: Analyzing trace with hash 764631320, now seen corresponding path program 1 times [2023-08-29 18:23:18,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:23:18,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871115623] [2023-08-29 18:23:18,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:23:18,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:23:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:23:18,264 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 18:23:18,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:23:18,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871115623] [2023-08-29 18:23:18,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871115623] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:23:18,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:23:18,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:23:18,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456185256] [2023-08-29 18:23:18,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:23:18,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:23:18,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:23:18,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:23:18,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:23:18,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 346 [2023-08-29 18:23:18,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 96 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:18,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:23:18,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 346 [2023-08-29 18:23:18,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:23:43,598 INFO L130 PetriNetUnfolder]: 277680/427292 cut-off events. [2023-08-29 18:23:43,598 INFO L131 PetriNetUnfolder]: For 16950/16950 co-relation queries the response was YES. [2023-08-29 18:23:44,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830194 conditions, 427292 events. 277680/427292 cut-off events. For 16950/16950 co-relation queries the response was YES. Maximal size of possible extension queue 7971. Compared 3937598 event pairs, 112559 based on Foata normal form. 0/382949 useless extension candidates. Maximal degree in co-relation 830082. Up to 202661 conditions per place. [2023-08-29 18:23:46,150 INFO L137 encePairwiseOnDemand]: 319/346 looper letters, 109 selfloop transitions, 20 changer transitions 0/156 dead transitions. [2023-08-29 18:23:46,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 156 transitions, 638 flow [2023-08-29 18:23:46,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:23:46,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:23:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 617 transitions. [2023-08-29 18:23:46,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.594412331406551 [2023-08-29 18:23:46,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 617 transitions. [2023-08-29 18:23:46,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 617 transitions. [2023-08-29 18:23:46,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:23:46,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 617 transitions. [2023-08-29 18:23:46,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:46,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:46,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:46,160 INFO L175 Difference]: Start difference. First operand has 101 places, 96 transitions, 232 flow. Second operand 3 states and 617 transitions. [2023-08-29 18:23:46,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 156 transitions, 638 flow [2023-08-29 18:23:46,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 156 transitions, 635 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:23:46,178 INFO L231 Difference]: Finished difference. Result has 104 places, 116 transitions, 404 flow [2023-08-29 18:23:46,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=404, PETRI_PLACES=104, PETRI_TRANSITIONS=116} [2023-08-29 18:23:46,179 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 5 predicate places. [2023-08-29 18:23:46,179 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 116 transitions, 404 flow [2023-08-29 18:23:46,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:46,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:23:46,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:23:46,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 18:23:46,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-29 18:23:46,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:23:46,181 INFO L85 PathProgramCache]: Analyzing trace with hash 360397388, now seen corresponding path program 1 times [2023-08-29 18:23:46,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:23:46,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991450587] [2023-08-29 18:23:46,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:23:46,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:23:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:23:46,212 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 18:23:46,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:23:46,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991450587] [2023-08-29 18:23:46,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991450587] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:23:46,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:23:46,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:23:46,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803885940] [2023-08-29 18:23:46,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:23:46,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:23:46,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:23:46,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:23:46,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:23:46,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 346 [2023-08-29 18:23:46,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 116 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:23:46,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:23:46,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 346 [2023-08-29 18:23:46,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:23:52,211 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1042] L701-15-->L701-17: Formula: (= |v_#race~global~0_40| 0) InVars {} OutVars{t_funThread1of3ForFork0_#t~nondet7=|v_t_funThread1of3ForFork0_#t~nondet7_7|, #race~global~0=|v_#race~global~0_40|} AuxVars[] AssignedVars[t_funThread1of3ForFork0_#t~nondet7, #race~global~0][90], [208#(= |#race~global~0| 0), 171#L701-17true, 182#L701-4true, Black: 206#true, t_funThread1of3ForFork0InUse, 99#L711-14true, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0InUse, Black: 203#(= |ULTIMATE.start_main_~i~0#1| 0), 23#L701-4true, 212#true]) [2023-08-29 18:23:52,212 INFO L383 tUnfolder$Statistics]: this new event has 43 ancestors and is cut-off event [2023-08-29 18:23:52,212 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-29 18:23:52,212 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-29 18:23:52,212 INFO L386 tUnfolder$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-29 18:23:53,065 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1094] L701-6-->L701-8: Formula: (= |v_#race~global~0_54| |v_t_funThread2of3ForFork0_#t~nondet6_15|) InVars {} OutVars{t_funThread2of3ForFork0_#t~nondet6=|v_t_funThread2of3ForFork0_#t~nondet6_15|, #race~global~0=|v_#race~global~0_54|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~nondet6, #race~global~0][50], [139#L701-27true, Black: 208#(= |#race~global~0| 0), t_funThread1of3ForFork0InUse, 99#L711-14true, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0InUse, 206#true, 152#L701-8true, Black: 203#(= |ULTIMATE.start_main_~i~0#1| 0), 212#true, 23#L701-4true]) [2023-08-29 18:23:53,065 INFO L383 tUnfolder$Statistics]: this new event has 44 ancestors and is cut-off event [2023-08-29 18:23:53,065 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-29 18:23:53,065 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-29 18:23:53,065 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-29 18:23:53,067 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1042] L701-15-->L701-17: Formula: (= |v_#race~global~0_40| 0) InVars {} OutVars{t_funThread1of3ForFork0_#t~nondet7=|v_t_funThread1of3ForFork0_#t~nondet7_7|, #race~global~0=|v_#race~global~0_40|} AuxVars[] AssignedVars[t_funThread1of3ForFork0_#t~nondet7, #race~global~0][90], [171#L701-17true, 208#(= |#race~global~0| 0), 182#L701-4true, Black: 206#true, t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0InUse, 110#L711-9true, t_funThread3of3ForFork0InUse, Black: 203#(= |ULTIMATE.start_main_~i~0#1| 0), 212#true, 23#L701-4true]) [2023-08-29 18:23:53,067 INFO L383 tUnfolder$Statistics]: this new event has 44 ancestors and is cut-off event [2023-08-29 18:23:53,067 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-29 18:23:53,067 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-29 18:23:53,067 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-29 18:23:53,067 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1042] L701-15-->L701-17: Formula: (= |v_#race~global~0_40| 0) InVars {} OutVars{t_funThread1of3ForFork0_#t~nondet7=|v_t_funThread1of3ForFork0_#t~nondet7_7|, #race~global~0=|v_#race~global~0_40|} AuxVars[] AssignedVars[t_funThread1of3ForFork0_#t~nondet7, #race~global~0][90], [208#(= |#race~global~0| 0), 171#L701-17true, 182#L701-4true, Black: 206#true, t_funThread1of3ForFork0InUse, 2#ULTIMATE.startEXITtrue, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0InUse, Black: 203#(= |ULTIMATE.start_main_~i~0#1| 0), 23#L701-4true, 212#true]) [2023-08-29 18:23:53,068 INFO L383 tUnfolder$Statistics]: this new event has 44 ancestors and is cut-off event [2023-08-29 18:23:53,068 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-29 18:23:53,068 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-29 18:23:53,068 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-29 18:23:53,068 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1070] L701-6-->L701-8: Formula: (= |v_#race~global~0_44| |v_t_funThread3of3ForFork0_#t~nondet6_15|) InVars {} OutVars{t_funThread3of3ForFork0_#t~nondet6=|v_t_funThread3of3ForFork0_#t~nondet6_15|, #race~global~0=|v_#race~global~0_44|} AuxVars[] AssignedVars[t_funThread3of3ForFork0_#t~nondet6, #race~global~0][75], [139#L701-27true, 182#L701-4true, Black: 208#(= |#race~global~0| 0), t_funThread1of3ForFork0InUse, 99#L711-14true, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0InUse, 206#true, 45#L701-8true, Black: 203#(= |ULTIMATE.start_main_~i~0#1| 0), 212#true]) [2023-08-29 18:23:53,069 INFO L383 tUnfolder$Statistics]: this new event has 44 ancestors and is cut-off event [2023-08-29 18:23:53,069 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-29 18:23:53,069 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-29 18:23:53,069 INFO L386 tUnfolder$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-29 18:23:53,945 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1094] L701-6-->L701-8: Formula: (= |v_#race~global~0_54| |v_t_funThread2of3ForFork0_#t~nondet6_15|) InVars {} OutVars{t_funThread2of3ForFork0_#t~nondet6=|v_t_funThread2of3ForFork0_#t~nondet6_15|, #race~global~0=|v_#race~global~0_54|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~nondet6, #race~global~0][50], [139#L701-27true, Black: 208#(= |#race~global~0| 0), t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0InUse, 110#L711-9true, t_funThread3of3ForFork0InUse, 206#true, 152#L701-8true, Black: 203#(= |ULTIMATE.start_main_~i~0#1| 0), 23#L701-4true, 212#true]) [2023-08-29 18:23:53,945 INFO L383 tUnfolder$Statistics]: this new event has 45 ancestors and is cut-off event [2023-08-29 18:23:53,945 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-08-29 18:23:53,945 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-08-29 18:23:53,945 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-08-29 18:23:53,946 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1094] L701-6-->L701-8: Formula: (= |v_#race~global~0_54| |v_t_funThread2of3ForFork0_#t~nondet6_15|) InVars {} OutVars{t_funThread2of3ForFork0_#t~nondet6=|v_t_funThread2of3ForFork0_#t~nondet6_15|, #race~global~0=|v_#race~global~0_54|} AuxVars[] AssignedVars[t_funThread2of3ForFork0_#t~nondet6, #race~global~0][50], [139#L701-27true, Black: 208#(= |#race~global~0| 0), t_funThread1of3ForFork0InUse, 2#ULTIMATE.startEXITtrue, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0InUse, 206#true, 152#L701-8true, Black: 203#(= |ULTIMATE.start_main_~i~0#1| 0), 212#true, 23#L701-4true]) [2023-08-29 18:23:53,946 INFO L383 tUnfolder$Statistics]: this new event has 45 ancestors and is cut-off event [2023-08-29 18:23:53,946 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-08-29 18:23:53,946 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-08-29 18:23:53,946 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-08-29 18:23:53,954 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1070] L701-6-->L701-8: Formula: (= |v_#race~global~0_44| |v_t_funThread3of3ForFork0_#t~nondet6_15|) InVars {} OutVars{t_funThread3of3ForFork0_#t~nondet6=|v_t_funThread3of3ForFork0_#t~nondet6_15|, #race~global~0=|v_#race~global~0_44|} AuxVars[] AssignedVars[t_funThread3of3ForFork0_#t~nondet6, #race~global~0][75], [139#L701-27true, 182#L701-4true, Black: 208#(= |#race~global~0| 0), t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0InUse, 110#L711-9true, t_funThread3of3ForFork0InUse, 206#true, 45#L701-8true, Black: 203#(= |ULTIMATE.start_main_~i~0#1| 0), 212#true]) [2023-08-29 18:23:53,954 INFO L383 tUnfolder$Statistics]: this new event has 45 ancestors and is cut-off event [2023-08-29 18:23:53,954 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-08-29 18:23:53,955 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-08-29 18:23:53,955 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-08-29 18:23:53,955 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1070] L701-6-->L701-8: Formula: (= |v_#race~global~0_44| |v_t_funThread3of3ForFork0_#t~nondet6_15|) InVars {} OutVars{t_funThread3of3ForFork0_#t~nondet6=|v_t_funThread3of3ForFork0_#t~nondet6_15|, #race~global~0=|v_#race~global~0_44|} AuxVars[] AssignedVars[t_funThread3of3ForFork0_#t~nondet6, #race~global~0][75], [139#L701-27true, 182#L701-4true, Black: 208#(= |#race~global~0| 0), t_funThread1of3ForFork0InUse, 2#ULTIMATE.startEXITtrue, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0InUse, 206#true, 45#L701-8true, Black: 203#(= |ULTIMATE.start_main_~i~0#1| 0), 212#true]) [2023-08-29 18:23:53,955 INFO L383 tUnfolder$Statistics]: this new event has 45 ancestors and is cut-off event [2023-08-29 18:23:53,955 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-08-29 18:23:53,955 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-08-29 18:23:53,956 INFO L386 tUnfolder$Statistics]: existing Event has 45 ancestors and is cut-off event [2023-08-29 18:24:11,032 INFO L130 PetriNetUnfolder]: 244803/388275 cut-off events. [2023-08-29 18:24:11,033 INFO L131 PetriNetUnfolder]: For 215765/221637 co-relation queries the response was YES. [2023-08-29 18:24:12,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930008 conditions, 388275 events. 244803/388275 cut-off events. For 215765/221637 co-relation queries the response was YES. Maximal size of possible extension queue 8369. Compared 3795265 event pairs, 157635 based on Foata normal form. 878/337497 useless extension candidates. Maximal degree in co-relation 290233. Up to 297557 conditions per place. [2023-08-29 18:24:13,807 INFO L137 encePairwiseOnDemand]: 333/346 looper letters, 98 selfloop transitions, 22 changer transitions 0/167 dead transitions. [2023-08-29 18:24:13,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 167 transitions, 824 flow [2023-08-29 18:24:13,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:24:13,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:24:13,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2023-08-29 18:24:13,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5876685934489403 [2023-08-29 18:24:13,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 610 transitions. [2023-08-29 18:24:13,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 610 transitions. [2023-08-29 18:24:13,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:24:13,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 610 transitions. [2023-08-29 18:24:13,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:24:13,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:24:13,813 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:24:13,813 INFO L175 Difference]: Start difference. First operand has 104 places, 116 transitions, 404 flow. Second operand 3 states and 610 transitions. [2023-08-29 18:24:13,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 167 transitions, 824 flow [2023-08-29 18:24:14,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 167 transitions, 766 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 18:24:14,219 INFO L231 Difference]: Finished difference. Result has 106 places, 136 transitions, 570 flow [2023-08-29 18:24:14,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=570, PETRI_PLACES=106, PETRI_TRANSITIONS=136} [2023-08-29 18:24:14,220 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 7 predicate places. [2023-08-29 18:24:14,220 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 136 transitions, 570 flow [2023-08-29 18:24:14,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:24:14,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:24:14,221 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-29 18:24:14,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 18:24:14,221 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-29 18:24:14,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:24:14,222 INFO L85 PathProgramCache]: Analyzing trace with hash -6572811, now seen corresponding path program 1 times [2023-08-29 18:24:14,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:24:14,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16896794] [2023-08-29 18:24:14,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:24:14,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:24:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:24:14,236 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:24:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:24:14,259 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:24:14,259 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:24:14,260 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-08-29 18:24:14,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-08-29 18:24:14,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-08-29 18:24:14,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-08-29 18:24:14,260 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-08-29 18:24:14,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-08-29 18:24:14,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-08-29 18:24:14,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-08-29 18:24:14,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-08-29 18:24:14,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-08-29 18:24:14,261 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-08-29 18:24:14,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-08-29 18:24:14,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-08-29 18:24:14,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-08-29 18:24:14,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-08-29 18:24:14,262 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-08-29 18:24:14,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-08-29 18:24:14,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-08-29 18:24:14,263 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-08-29 18:24:14,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 18:24:14,263 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-29 18:24:14,264 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:24:14,264 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-29 18:24:14,287 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-29 18:24:14,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 265 transitions, 574 flow [2023-08-29 18:24:14,365 INFO L130 PetriNetUnfolder]: 91/709 cut-off events. [2023-08-29 18:24:14,365 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-29 18:24:14,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 709 events. 91/709 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3051 event pairs, 6 based on Foata normal form. 0/581 useless extension candidates. Maximal degree in co-relation 477. Up to 32 conditions per place. [2023-08-29 18:24:14,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 265 transitions, 574 flow [2023-08-29 18:24:14,378 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 265 transitions, 574 flow [2023-08-29 18:24:14,378 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:24:14,378 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 265 transitions, 574 flow [2023-08-29 18:24:14,378 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 265 transitions, 574 flow [2023-08-29 18:24:14,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 265 transitions, 574 flow [2023-08-29 18:24:14,435 INFO L130 PetriNetUnfolder]: 91/709 cut-off events. [2023-08-29 18:24:14,435 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-29 18:24:14,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 709 events. 91/709 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3051 event pairs, 6 based on Foata normal form. 0/581 useless extension candidates. Maximal degree in co-relation 477. Up to 32 conditions per place. [2023-08-29 18:24:14,466 INFO L119 LiptonReduction]: Number of co-enabled transitions 44176 [2023-08-29 18:24:16,904 INFO L134 LiptonReduction]: Checked pairs total: 178116 [2023-08-29 18:24:16,904 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-08-29 18:24:16,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:24:16,906 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;@2c427f32, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:24:16,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-29 18:24:16,907 INFO L130 PetriNetUnfolder]: 1/11 cut-off events. [2023-08-29 18:24:16,908 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:24:16,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:24:16,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 18:24:16,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-29 18:24:16,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:24:16,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1573844522, now seen corresponding path program 1 times [2023-08-29 18:24:16,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:24:16,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781588693] [2023-08-29 18:24:16,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:24:16,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:24:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:24:16,944 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 18:24:16,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:24:16,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781588693] [2023-08-29 18:24:16,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781588693] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:24:16,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:24:16,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:24:16,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183339799] [2023-08-29 18:24:16,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:24:16,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:24:16,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:24:16,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:24:16,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:24:16,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 408 [2023-08-29 18:24:16,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 148 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:24:16,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:24:16,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 408 [2023-08-29 18:24:16,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:25:51,413 INFO L130 PetriNetUnfolder]: 740884/1106656 cut-off events. [2023-08-29 18:25:51,414 INFO L131 PetriNetUnfolder]: For 26144/26144 co-relation queries the response was YES. [2023-08-29 18:25:55,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075773 conditions, 1106656 events. 740884/1106656 cut-off events. For 26144/26144 co-relation queries the response was YES. Maximal size of possible extension queue 20498. Compared 11104889 event pairs, 704131 based on Foata normal form. 164729/1159403 useless extension candidates. Maximal degree in co-relation 210400. Up to 954113 conditions per place. [2023-08-29 18:26:03,728 INFO L137 encePairwiseOnDemand]: 377/408 looper letters, 72 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2023-08-29 18:26:03,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 132 transitions, 456 flow [2023-08-29 18:26:03,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:26:03,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:26:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 775 transitions. [2023-08-29 18:26:03,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6331699346405228 [2023-08-29 18:26:03,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 775 transitions. [2023-08-29 18:26:03,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 775 transitions. [2023-08-29 18:26:03,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:26:03,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 775 transitions. [2023-08-29 18:26:03,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 18:26:03,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:03,752 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:03,752 INFO L175 Difference]: Start difference. First operand has 125 places, 148 transitions, 340 flow. Second operand 3 states and 775 transitions. [2023-08-29 18:26:03,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 132 transitions, 456 flow [2023-08-29 18:26:03,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 132 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:26:03,762 INFO L231 Difference]: Finished difference. Result has 127 places, 121 transitions, 296 flow [2023-08-29 18:26:03,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=127, PETRI_TRANSITIONS=121} [2023-08-29 18:26:03,763 INFO L281 CegarLoopForPetriNet]: 125 programPoint places, 2 predicate places. [2023-08-29 18:26:03,764 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 121 transitions, 296 flow [2023-08-29 18:26:03,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:03,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:26:03,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:26:03,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 18:26:03,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-29 18:26:03,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:26:03,766 INFO L85 PathProgramCache]: Analyzing trace with hash -826985054, now seen corresponding path program 1 times [2023-08-29 18:26:03,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:26:03,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023698376] [2023-08-29 18:26:03,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:26:03,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:26:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:26:03,840 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 18:26:03,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:26:03,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023698376] [2023-08-29 18:26:03,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023698376] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:26:03,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:26:03,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:26:03,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120079406] [2023-08-29 18:26:03,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:26:03,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:26:03,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:26:03,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:26:03,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:26:03,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 408 [2023-08-29 18:26:03,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 121 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:26:03,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:26:03,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 408 [2023-08-29 18:26:03,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand