./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.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_61-invariant_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 --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 18:25:24,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:25:24,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:25:24,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:25:24,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:25:24,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:25:24,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:25:24,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:25:24,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:25:24,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:25:24,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:25:24,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:25:24,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:25:24,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:25:24,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:25:24,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:25:24,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:25:24,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:25:24,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:25:24,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:25:24,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:25:24,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:25:24,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:25:24,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:25:24,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:25:24,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:25:24,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:25:24,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:25:24,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:25:24,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:25:24,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:25:24,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:25:24,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:25:24,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:25:24,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:25:24,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:25:24,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:25:24,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:25:24,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:25:24,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:25:24,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:25:24,363 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:25:24,395 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:25:24,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:25:24,396 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:25:24,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:25:24,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:25:24,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:25:24,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:25:24,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:25:24,399 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:25:24,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:25:24,401 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:25:24,401 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:25:24,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:25:24,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:25:24,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:25:24,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:25:24,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:25:24,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:25:24,402 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:25:24,402 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:25:24,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:25:24,403 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:25:24,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:25:24,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:25:24,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:25:24,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:25:24,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:25:24,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:25:24,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:25:24,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:25:24,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:25:24,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:25:24,406 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:25:24,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:25:24,406 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:25:24,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:25:24,407 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:25:24,407 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:25:24,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:25:24,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:25:24,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:25:24,744 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:25:24,745 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:25:24,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2023-08-29 18:25:25,863 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:25:26,093 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:25:26,094 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2023-08-29 18:25:26,118 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74693aa89/d30f2946671e48dd8f481995c36fd52e/FLAG44f339973 [2023-08-29 18:25:26,131 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74693aa89/d30f2946671e48dd8f481995c36fd52e [2023-08-29 18:25:26,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:25:26,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:25:26,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:25:26,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:25:26,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:25:26,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:25:26" (1/1) ... [2023-08-29 18:25:26,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12041216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:26, skipping insertion in model container [2023-08-29 18:25:26,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:25:26" (1/1) ... [2023-08-29 18:25:26,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:25:26,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:25:26,420 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_61-invariant_racing.i[30176,30189] [2023-08-29 18:25:26,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:25:26,470 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:25:26,516 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_61-invariant_racing.i[30176,30189] [2023-08-29 18:25:26,532 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:25:26,574 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:25:26,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:26 WrapperNode [2023-08-29 18:25:26,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:25:26,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:25:26,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:25:26,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:25:26,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:26" (1/1) ... [2023-08-29 18:25:26,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:26" (1/1) ... [2023-08-29 18:25:26,641 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 115 [2023-08-29 18:25:26,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:25:26,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:25:26,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:25:26,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:25:26,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:26" (1/1) ... [2023-08-29 18:25:26,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:26" (1/1) ... [2023-08-29 18:25:26,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:26" (1/1) ... [2023-08-29 18:25:26,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:26" (1/1) ... [2023-08-29 18:25:26,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:26" (1/1) ... [2023-08-29 18:25:26,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:26" (1/1) ... [2023-08-29 18:25:26,681 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:26" (1/1) ... [2023-08-29 18:25:26,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:26" (1/1) ... [2023-08-29 18:25:26,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:25:26,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:25:26,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:25:26,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:25:26,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:26" (1/1) ... [2023-08-29 18:25:26,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:25:26,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:25:26,726 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 18:25:26,751 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 18:25:26,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:25:26,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:25:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:25:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:25:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:25:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:25:26,767 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:25:26,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:25:26,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:25:26,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:25:26,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:25:26,769 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 18:25:26,947 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:25:26,949 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:25:27,245 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:25:27,252 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:25:27,252 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-29 18:25:27,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:25:27 BoogieIcfgContainer [2023-08-29 18:25:27,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:25:27,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:25:27,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:25:27,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:25:27,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:25:26" (1/3) ... [2023-08-29 18:25:27,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578aa2f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:25:27, skipping insertion in model container [2023-08-29 18:25:27,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:25:26" (2/3) ... [2023-08-29 18:25:27,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578aa2f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:25:27, skipping insertion in model container [2023-08-29 18:25:27,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:25:27" (3/3) ... [2023-08-29 18:25:27,264 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2023-08-29 18:25:27,271 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:25:27,280 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:25:27,280 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-29 18:25:27,280 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:25:27,377 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 18:25:27,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 167 transitions, 342 flow [2023-08-29 18:25:27,543 INFO L130 PetriNetUnfolder]: 30/246 cut-off events. [2023-08-29 18:25:27,543 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:25:27,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 246 events. 30/246 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 951 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 134. Up to 6 conditions per place. [2023-08-29 18:25:27,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 167 transitions, 342 flow [2023-08-29 18:25:27,561 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 167 transitions, 342 flow [2023-08-29 18:25:27,565 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:25:27,585 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 167 transitions, 342 flow [2023-08-29 18:25:27,588 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 167 transitions, 342 flow [2023-08-29 18:25:27,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 167 transitions, 342 flow [2023-08-29 18:25:27,621 INFO L130 PetriNetUnfolder]: 30/246 cut-off events. [2023-08-29 18:25:27,622 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:25:27,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 246 events. 30/246 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 951 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 134. Up to 6 conditions per place. [2023-08-29 18:25:27,627 INFO L119 LiptonReduction]: Number of co-enabled transitions 8500 [2023-08-29 18:25:30,084 INFO L134 LiptonReduction]: Checked pairs total: 35928 [2023-08-29 18:25:30,085 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-29 18:25:30,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:25:30,102 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;@377d7a14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:25:30,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 18:25:30,107 INFO L130 PetriNetUnfolder]: 2/20 cut-off events. [2023-08-29 18:25:30,107 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:25:30,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:30,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 18:25:30,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:25:30,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:30,113 INFO L85 PathProgramCache]: Analyzing trace with hash 563633600, now seen corresponding path program 1 times [2023-08-29 18:25:30,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:30,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559741683] [2023-08-29 18:25:30,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:30,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:25:30,353 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 18:25:30,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:25:30,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559741683] [2023-08-29 18:25:30,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559741683] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:25:30,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:25:30,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:25:30,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757588652] [2023-08-29 18:25:30,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:25:30,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:25:30,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:25:30,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:25:30,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:25:30,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 268 [2023-08-29 18:25:30,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 86 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:30,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:25:30,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 268 [2023-08-29 18:25:30,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:25:30,603 INFO L130 PetriNetUnfolder]: 229/684 cut-off events. [2023-08-29 18:25:30,603 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:25:30,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 684 events. 229/684 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3718 event pairs, 162 based on Foata normal form. 66/657 useless extension candidates. Maximal degree in co-relation 1138. Up to 461 conditions per place. [2023-08-29 18:25:30,610 INFO L137 encePairwiseOnDemand]: 249/268 looper letters, 44 selfloop transitions, 2 changer transitions 2/83 dead transitions. [2023-08-29 18:25:30,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 83 transitions, 270 flow [2023-08-29 18:25:30,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:25:30,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:25:30,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2023-08-29 18:25:30,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6218905472636815 [2023-08-29 18:25:30,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2023-08-29 18:25:30,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2023-08-29 18:25:30,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:25:30,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2023-08-29 18:25:30,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:30,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:30,647 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:30,648 INFO L175 Difference]: Start difference. First operand has 72 places, 86 transitions, 180 flow. Second operand 3 states and 500 transitions. [2023-08-29 18:25:30,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 83 transitions, 270 flow [2023-08-29 18:25:30,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:25:30,653 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 149 flow [2023-08-29 18:25:30,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2023-08-29 18:25:30,658 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2023-08-29 18:25:30,658 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 149 flow [2023-08-29 18:25:30,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:30,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:30,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 18:25:30,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:25:30,660 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:25:30,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:30,660 INFO L85 PathProgramCache]: Analyzing trace with hash 310094017, now seen corresponding path program 1 times [2023-08-29 18:25:30,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:30,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489325671] [2023-08-29 18:25:30,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:30,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:25:30,707 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 18:25:30,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:25:30,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489325671] [2023-08-29 18:25:30,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489325671] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:25:30,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:25:30,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:25:30,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182867631] [2023-08-29 18:25:30,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:25:30,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:25:30,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:25:30,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:25:30,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:25:30,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 268 [2023-08-29 18:25:30,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:30,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:25:30,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 268 [2023-08-29 18:25:30,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:25:30,973 INFO L130 PetriNetUnfolder]: 636/1592 cut-off events. [2023-08-29 18:25:30,974 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2023-08-29 18:25:30,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3023 conditions, 1592 events. 636/1592 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9243 event pairs, 234 based on Foata normal form. 0/1460 useless extension candidates. Maximal degree in co-relation 3005. Up to 770 conditions per place. [2023-08-29 18:25:30,982 INFO L137 encePairwiseOnDemand]: 246/268 looper letters, 76 selfloop transitions, 16 changer transitions 0/110 dead transitions. [2023-08-29 18:25:30,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 110 transitions, 422 flow [2023-08-29 18:25:30,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:25:30,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:25:30,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-08-29 18:25:30,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5883084577114428 [2023-08-29 18:25:30,985 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-08-29 18:25:30,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-08-29 18:25:30,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:25:30,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-08-29 18:25:30,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:30,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:30,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:30,990 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 149 flow. Second operand 3 states and 473 transitions. [2023-08-29 18:25:30,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 110 transitions, 422 flow [2023-08-29 18:25:30,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 110 transitions, 416 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 18:25:30,993 INFO L231 Difference]: Finished difference. Result has 75 places, 84 transitions, 285 flow [2023-08-29 18:25:30,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=75, PETRI_TRANSITIONS=84} [2023-08-29 18:25:30,994 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2023-08-29 18:25:30,995 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 84 transitions, 285 flow [2023-08-29 18:25:30,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:30,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:30,995 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 18:25:30,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 18:25:30,996 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:25:30,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:30,997 INFO L85 PathProgramCache]: Analyzing trace with hash 310172152, now seen corresponding path program 1 times [2023-08-29 18:25:30,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:30,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088636801] [2023-08-29 18:25:30,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:30,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:25:31,019 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:25:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:25:31,047 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:25:31,047 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:25:31,048 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-29 18:25:31,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-08-29 18:25:31,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-08-29 18:25:31,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-08-29 18:25:31,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-08-29 18:25:31,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-08-29 18:25:31,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-08-29 18:25:31,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-08-29 18:25:31,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-08-29 18:25:31,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-08-29 18:25:31,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-08-29 18:25:31,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-08-29 18:25:31,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-08-29 18:25:31,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-08-29 18:25:31,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-08-29 18:25:31,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-08-29 18:25:31,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-08-29 18:25:31,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 18:25:31,054 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-29 18:25:31,056 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:25:31,057 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:25:31,083 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 18:25:31,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 219 transitions, 456 flow [2023-08-29 18:25:31,125 INFO L130 PetriNetUnfolder]: 51/407 cut-off events. [2023-08-29 18:25:31,126 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:25:31,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 407 events. 51/407 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1802 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 248. Up to 9 conditions per place. [2023-08-29 18:25:31,130 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 219 transitions, 456 flow [2023-08-29 18:25:31,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 219 transitions, 456 flow [2023-08-29 18:25:31,134 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:25:31,135 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 219 transitions, 456 flow [2023-08-29 18:25:31,135 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 219 transitions, 456 flow [2023-08-29 18:25:31,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 219 transitions, 456 flow [2023-08-29 18:25:31,173 INFO L130 PetriNetUnfolder]: 51/407 cut-off events. [2023-08-29 18:25:31,174 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:25:31,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 407 events. 51/407 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1802 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 248. Up to 9 conditions per place. [2023-08-29 18:25:31,191 INFO L119 LiptonReduction]: Number of co-enabled transitions 23100 [2023-08-29 18:25:33,639 INFO L134 LiptonReduction]: Checked pairs total: 104423 [2023-08-29 18:25:33,639 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-29 18:25:33,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:25:33,642 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;@377d7a14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:25:33,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 18:25:33,645 INFO L130 PetriNetUnfolder]: 2/18 cut-off events. [2023-08-29 18:25:33,645 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:25:33,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:33,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 18:25:33,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:25:33,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:33,646 INFO L85 PathProgramCache]: Analyzing trace with hash 935638451, now seen corresponding path program 1 times [2023-08-29 18:25:33,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:33,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006714989] [2023-08-29 18:25:33,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:33,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:25:33,712 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 18:25:33,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:25:33,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006714989] [2023-08-29 18:25:33,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006714989] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:25:33,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:25:33,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:25:33,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199627221] [2023-08-29 18:25:33,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:25:33,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:25:33,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:25:33,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:25:33,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:25:33,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 338 [2023-08-29 18:25:33,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 126 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:33,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:25:33,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 338 [2023-08-29 18:25:33,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:25:34,793 INFO L130 PetriNetUnfolder]: 5440/10568 cut-off events. [2023-08-29 18:25:34,795 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-08-29 18:25:34,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19007 conditions, 10568 events. 5440/10568 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 86261 event pairs, 4674 based on Foata normal form. 1449/10853 useless extension candidates. Maximal degree in co-relation 11045. Up to 8352 conditions per place. [2023-08-29 18:25:34,865 INFO L137 encePairwiseOnDemand]: 313/338 looper letters, 59 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2023-08-29 18:25:34,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 117 transitions, 374 flow [2023-08-29 18:25:34,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:25:34,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:25:34,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 651 transitions. [2023-08-29 18:25:34,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6420118343195266 [2023-08-29 18:25:34,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 651 transitions. [2023-08-29 18:25:34,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 651 transitions. [2023-08-29 18:25:34,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:25:34,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 651 transitions. [2023-08-29 18:25:34,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:34,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:34,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:34,880 INFO L175 Difference]: Start difference. First operand has 106 places, 126 transitions, 270 flow. Second operand 3 states and 651 transitions. [2023-08-29 18:25:34,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 117 transitions, 374 flow [2023-08-29 18:25:34,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 117 transitions, 374 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:25:34,885 INFO L231 Difference]: Finished difference. Result has 108 places, 105 transitions, 238 flow [2023-08-29 18:25:34,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=108, PETRI_TRANSITIONS=105} [2023-08-29 18:25:34,888 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 2 predicate places. [2023-08-29 18:25:34,888 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 105 transitions, 238 flow [2023-08-29 18:25:34,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:34,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:34,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 18:25:34,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:25:34,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:25:34,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:34,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1035972485, now seen corresponding path program 1 times [2023-08-29 18:25:34,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:34,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990991553] [2023-08-29 18:25:34,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:34,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:25:34,956 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 18:25:34,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:25:34,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990991553] [2023-08-29 18:25:34,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990991553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:25:34,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:25:34,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:25:34,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649114883] [2023-08-29 18:25:34,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:25:34,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:25:34,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:25:34,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:25:34,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:25:35,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 338 [2023-08-29 18:25:35,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:35,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:25:35,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 338 [2023-08-29 18:25:35,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:25:39,321 INFO L130 PetriNetUnfolder]: 30303/54246 cut-off events. [2023-08-29 18:25:39,321 INFO L131 PetriNetUnfolder]: For 1105/1105 co-relation queries the response was YES. [2023-08-29 18:25:39,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103105 conditions, 54246 events. 30303/54246 cut-off events. For 1105/1105 co-relation queries the response was YES. Maximal size of possible extension queue 1061. Compared 475586 event pairs, 11450 based on Foata normal form. 0/49429 useless extension candidates. Maximal degree in co-relation 102973. Up to 26729 conditions per place. [2023-08-29 18:25:39,835 INFO L137 encePairwiseOnDemand]: 305/338 looper letters, 113 selfloop transitions, 24 changer transitions 0/168 dead transitions. [2023-08-29 18:25:39,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 168 transitions, 656 flow [2023-08-29 18:25:39,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:25:39,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:25:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2023-08-29 18:25:39,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6094674556213018 [2023-08-29 18:25:39,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 618 transitions. [2023-08-29 18:25:39,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 618 transitions. [2023-08-29 18:25:39,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:25:39,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 618 transitions. [2023-08-29 18:25:39,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:39,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:39,842 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:39,843 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 238 flow. Second operand 3 states and 618 transitions. [2023-08-29 18:25:39,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 168 transitions, 656 flow [2023-08-29 18:25:39,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 168 transitions, 653 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:25:39,849 INFO L231 Difference]: Finished difference. Result has 111 places, 129 transitions, 446 flow [2023-08-29 18:25:39,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=446, PETRI_PLACES=111, PETRI_TRANSITIONS=129} [2023-08-29 18:25:39,850 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 5 predicate places. [2023-08-29 18:25:39,850 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 129 transitions, 446 flow [2023-08-29 18:25:39,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:39,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:39,851 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 18:25:39,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 18:25:39,851 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:25:39,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:39,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1299180177, now seen corresponding path program 1 times [2023-08-29 18:25:39,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:39,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236069144] [2023-08-29 18:25:39,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:39,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:25:39,866 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:25:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:25:39,881 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:25:39,882 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:25:39,882 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-29 18:25:39,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 18:25:39,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 18:25:39,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 18:25:39,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 18:25:39,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 18:25:39,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 18:25:39,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 18:25:39,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 18:25:39,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 18:25:39,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 18:25:39,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 18:25:39,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 18:25:39,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 18:25:39,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 18:25:39,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 18:25:39,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 18:25:39,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 18:25:39,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 18:25:39,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 18:25:39,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 18:25:39,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 18:25:39,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 18:25:39,886 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-29 18:25:39,886 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:25:39,886 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 18:25:39,908 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 18:25:39,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 271 transitions, 572 flow [2023-08-29 18:25:39,984 INFO L130 PetriNetUnfolder]: 77/611 cut-off events. [2023-08-29 18:25:39,985 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:25:39,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 611 events. 77/611 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2863 event pairs, 1 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 415. Up to 16 conditions per place. [2023-08-29 18:25:39,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 271 transitions, 572 flow [2023-08-29 18:25:39,999 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 271 transitions, 572 flow [2023-08-29 18:25:40,000 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:25:40,002 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 271 transitions, 572 flow [2023-08-29 18:25:40,003 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 271 transitions, 572 flow [2023-08-29 18:25:40,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 271 transitions, 572 flow [2023-08-29 18:25:40,068 INFO L130 PetriNetUnfolder]: 77/611 cut-off events. [2023-08-29 18:25:40,068 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:25:40,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 611 events. 77/611 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2863 event pairs, 1 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 415. Up to 16 conditions per place. [2023-08-29 18:25:40,099 INFO L119 LiptonReduction]: Number of co-enabled transitions 42600 [2023-08-29 18:25:42,342 INFO L134 LiptonReduction]: Checked pairs total: 207597 [2023-08-29 18:25:42,342 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-29 18:25:42,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:25:42,345 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;@377d7a14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:25:42,345 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-29 18:25:42,347 INFO L130 PetriNetUnfolder]: 2/19 cut-off events. [2023-08-29 18:25:42,347 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:25:42,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:42,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 18:25:42,348 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:25:42,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:42,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1379118033, now seen corresponding path program 1 times [2023-08-29 18:25:42,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:42,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563903507] [2023-08-29 18:25:42,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:42,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:25:42,448 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 18:25:42,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:25:42,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563903507] [2023-08-29 18:25:42,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563903507] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:25:42,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:25:42,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:25:42,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899206339] [2023-08-29 18:25:42,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:25:42,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:25:42,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:25:42,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:25:42,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:25:42,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 413 [2023-08-29 18:25:42,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 164 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:42,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:25:42,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 413 [2023-08-29 18:25:42,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:25:54,263 INFO L130 PetriNetUnfolder]: 101716/167274 cut-off events. [2023-08-29 18:25:54,264 INFO L131 PetriNetUnfolder]: For 1528/1528 co-relation queries the response was YES. [2023-08-29 18:25:54,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306159 conditions, 167274 events. 101716/167274 cut-off events. For 1528/1528 co-relation queries the response was YES. Maximal size of possible extension queue 3855. Compared 1641874 event pairs, 60688 based on Foata normal form. 27236/179981 useless extension candidates. Maximal degree in co-relation 21041. Up to 137592 conditions per place. [2023-08-29 18:25:55,449 INFO L137 encePairwiseOnDemand]: 382/413 looper letters, 73 selfloop transitions, 2 changer transitions 0/149 dead transitions. [2023-08-29 18:25:55,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 149 transitions, 478 flow [2023-08-29 18:25:55,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:25:55,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:25:55,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 803 transitions. [2023-08-29 18:25:55,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6481033091202583 [2023-08-29 18:25:55,452 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 803 transitions. [2023-08-29 18:25:55,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 803 transitions. [2023-08-29 18:25:55,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:25:55,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 803 transitions. [2023-08-29 18:25:55,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:55,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:55,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:55,458 INFO L175 Difference]: Start difference. First operand has 138 places, 164 transitions, 358 flow. Second operand 3 states and 803 transitions. [2023-08-29 18:25:55,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 149 transitions, 478 flow [2023-08-29 18:25:55,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 149 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:25:55,579 INFO L231 Difference]: Finished difference. Result has 140 places, 137 transitions, 314 flow [2023-08-29 18:25:55,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=140, PETRI_TRANSITIONS=137} [2023-08-29 18:25:55,580 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 2 predicate places. [2023-08-29 18:25:55,581 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 137 transitions, 314 flow [2023-08-29 18:25:55,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:25:55,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:25:55,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 18:25:55,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 18:25:55,582 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:25:55,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:25:55,582 INFO L85 PathProgramCache]: Analyzing trace with hash -158855310, now seen corresponding path program 1 times [2023-08-29 18:25:55,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:25:55,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523211506] [2023-08-29 18:25:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:25:55,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:25:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:25:55,627 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 18:25:55,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:25:55,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523211506] [2023-08-29 18:25:55,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523211506] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:25:55,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:25:55,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:25:55,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130684334] [2023-08-29 18:25:55,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:25:55,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:25:55,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:25:55,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:25:55,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:25:55,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 413 [2023-08-29 18:25:55,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 137 transitions, 314 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 18:25:55,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:25:55,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 413 [2023-08-29 18:25:55,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:08,334 INFO L130 PetriNetUnfolder]: 1047499/1592195 cut-off events. [2023-08-29 18:28:08,334 INFO L131 PetriNetUnfolder]: For 30425/30425 co-relation queries the response was YES. [2023-08-29 18:28:13,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3065257 conditions, 1592195 events. 1047499/1592195 cut-off events. For 30425/30425 co-relation queries the response was YES. Maximal size of possible extension queue 23670. Compared 16259682 event pairs, 413835 based on Foata normal form. 0/1448163 useless extension candidates. Maximal degree in co-relation 3065124. Up to 816356 conditions per place.