./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 09:32:59,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 09:32:59,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 09:32:59,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 09:32:59,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 09:32:59,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 09:32:59,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 09:32:59,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 09:32:59,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 09:32:59,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 09:32:59,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 09:32:59,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 09:32:59,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 09:32:59,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 09:32:59,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 09:32:59,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 09:32:59,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 09:32:59,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 09:32:59,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 09:32:59,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 09:32:59,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 09:32:59,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 09:32:59,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 09:32:59,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 09:32:59,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 09:32:59,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 09:32:59,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 09:32:59,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 09:32:59,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 09:32:59,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 09:32:59,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 09:32:59,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 09:32:59,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 09:32:59,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 09:32:59,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 09:32:59,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 09:32:59,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 09:32:59,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 09:32:59,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 09:32:59,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 09:32:59,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 09:32:59,500 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 09:32:59,523 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 09:32:59,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 09:32:59,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 09:32:59,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 09:32:59,525 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 09:32:59,525 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 09:32:59,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 09:32:59,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 09:32:59,527 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 09:32:59,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 09:32:59,528 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 09:32:59,528 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 09:32:59,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 09:32:59,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 09:32:59,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 09:32:59,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 09:32:59,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 09:32:59,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 09:32:59,529 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 09:32:59,529 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 09:32:59,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 09:32:59,529 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 09:32:59,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 09:32:59,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 09:32:59,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 09:32:59,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 09:32:59,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 09:32:59,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 09:32:59,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 09:32:59,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 09:32:59,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 09:32:59,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 09:32:59,531 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 09:32:59,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 09:32:59,531 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 09:32:59,531 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 09:32:59,531 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 09:32:59,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 09:32:59,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 09:32:59,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 09:32:59,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 09:32:59,791 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 09:32:59,791 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 09:32:59,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i [2023-08-29 09:33:01,169 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 09:33:01,354 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 09:33:01,354 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i [2023-08-29 09:33:01,363 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/162cc00d1/4ebd649813574492baa675e0c39bbab7/FLAG51cfbf4ee [2023-08-29 09:33:01,375 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/162cc00d1/4ebd649813574492baa675e0c39bbab7 [2023-08-29 09:33:01,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 09:33:01,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 09:33:01,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 09:33:01,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 09:33:01,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 09:33:01,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:33:01" (1/1) ... [2023-08-29 09:33:01,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9b7e79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:01, skipping insertion in model container [2023-08-29 09:33:01,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:33:01" (1/1) ... [2023-08-29 09:33:01,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 09:33:01,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 09:33:01,702 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i[30422,30435] [2023-08-29 09:33:01,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 09:33:01,715 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 09:33:01,777 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/29_conditionals_vs.i[30422,30435] [2023-08-29 09:33:01,779 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 09:33:01,804 INFO L208 MainTranslator]: Completed translation [2023-08-29 09:33:01,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:01 WrapperNode [2023-08-29 09:33:01,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 09:33:01,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 09:33:01,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 09:33:01,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 09:33:01,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:01" (1/1) ... [2023-08-29 09:33:01,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:01" (1/1) ... [2023-08-29 09:33:01,838 INFO L138 Inliner]: procedures = 170, calls = 14, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 73 [2023-08-29 09:33:01,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 09:33:01,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 09:33:01,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 09:33:01,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 09:33:01,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:01" (1/1) ... [2023-08-29 09:33:01,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:01" (1/1) ... [2023-08-29 09:33:01,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:01" (1/1) ... [2023-08-29 09:33:01,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:01" (1/1) ... [2023-08-29 09:33:01,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:01" (1/1) ... [2023-08-29 09:33:01,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:01" (1/1) ... [2023-08-29 09:33:01,852 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:01" (1/1) ... [2023-08-29 09:33:01,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:01" (1/1) ... [2023-08-29 09:33:01,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 09:33:01,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 09:33:01,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 09:33:01,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 09:33:01,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:01" (1/1) ... [2023-08-29 09:33:01,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 09:33:01,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 09:33:01,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 09:33:01,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 09:33:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-29 09:33:01,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-29 09:33:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 09:33:01,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 09:33:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 09:33:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 09:33:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 09:33:01,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 09:33:01,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 09:33:01,906 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 09:33:02,028 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 09:33:02,029 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 09:33:02,171 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 09:33:02,223 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 09:33:02,224 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-29 09:33:02,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:33:02 BoogieIcfgContainer [2023-08-29 09:33:02,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 09:33:02,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 09:33:02,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 09:33:02,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 09:33:02,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:33:01" (1/3) ... [2023-08-29 09:33:02,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b57e927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:33:02, skipping insertion in model container [2023-08-29 09:33:02,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:33:01" (2/3) ... [2023-08-29 09:33:02,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b57e927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:33:02, skipping insertion in model container [2023-08-29 09:33:02,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:33:02" (3/3) ... [2023-08-29 09:33:02,231 INFO L112 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2023-08-29 09:33:02,236 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 09:33:02,242 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 09:33:02,242 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-29 09:33:02,242 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 09:33:02,295 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:33:02,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 57 transitions, 119 flow [2023-08-29 09:33:02,355 INFO L130 PetriNetUnfolder]: 6/67 cut-off events. [2023-08-29 09:33:02,355 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:33:02,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 6/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2023-08-29 09:33:02,362 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 57 transitions, 119 flow [2023-08-29 09:33:02,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 57 transitions, 119 flow [2023-08-29 09:33:02,370 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:33:02,378 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 57 transitions, 119 flow [2023-08-29 09:33:02,381 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 57 transitions, 119 flow [2023-08-29 09:33:02,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 57 transitions, 119 flow [2023-08-29 09:33:02,402 INFO L130 PetriNetUnfolder]: 6/67 cut-off events. [2023-08-29 09:33:02,403 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:33:02,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 67 events. 6/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2023-08-29 09:33:02,404 INFO L119 LiptonReduction]: Number of co-enabled transitions 832 [2023-08-29 09:33:03,863 INFO L134 LiptonReduction]: Checked pairs total: 720 [2023-08-29 09:33:03,864 INFO L136 LiptonReduction]: Total number of compositions: 63 [2023-08-29 09:33:03,877 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:33:03,882 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;@59d9baa0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:33:03,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-29 09:33:03,885 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:33:03,886 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:33:03,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:33:03,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:33:03,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-08-29 09:33:03,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:33:03,891 INFO L85 PathProgramCache]: Analyzing trace with hash 9987784, now seen corresponding path program 1 times [2023-08-29 09:33:03,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:33:03,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437057872] [2023-08-29 09:33:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:33:03,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:33:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:33:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:33:04,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:33:04,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437057872] [2023-08-29 09:33:04,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437057872] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:33:04,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:33:04,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:33:04,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549893114] [2023-08-29 09:33:04,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:33:04,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:33:04,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:33:04,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:33:04,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:33:04,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 120 [2023-08-29 09:33:04,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 11 transitions, 27 flow. Second operand has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:04,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:33:04,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 120 [2023-08-29 09:33:04,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:33:04,080 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2023-08-29 09:33:04,080 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:33:04,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 12 events. 2/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 2 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 14. Up to 11 conditions per place. [2023-08-29 09:33:04,081 INFO L137 encePairwiseOnDemand]: 115/120 looper letters, 5 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2023-08-29 09:33:04,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 27 flow [2023-08-29 09:33:04,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:33:04,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:33:04,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 102 transitions. [2023-08-29 09:33:04,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2023-08-29 09:33:04,089 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 102 transitions. [2023-08-29 09:33:04,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 102 transitions. [2023-08-29 09:33:04,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:33:04,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 102 transitions. [2023-08-29 09:33:04,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 51.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:04,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:04,095 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:04,096 INFO L175 Difference]: Start difference. First operand has 14 places, 11 transitions, 27 flow. Second operand 2 states and 102 transitions. [2023-08-29 09:33:04,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 27 flow [2023-08-29 09:33:04,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 27 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:33:04,098 INFO L231 Difference]: Finished difference. Result has 10 places, 6 transitions, 17 flow [2023-08-29 09:33:04,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=17, PETRI_PLACES=10, PETRI_TRANSITIONS=6} [2023-08-29 09:33:04,102 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, -4 predicate places. [2023-08-29 09:33:04,102 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 6 transitions, 17 flow [2023-08-29 09:33:04,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:04,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:33:04,103 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 09:33:04,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 09:33:04,103 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-08-29 09:33:04,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:33:04,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1008295321, now seen corresponding path program 1 times [2023-08-29 09:33:04,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:33:04,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205139343] [2023-08-29 09:33:04,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:33:04,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:33:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:33:04,117 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:33:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:33:04,138 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:33:04,138 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:33:04,139 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-08-29 09:33:04,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-08-29 09:33:04,140 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-08-29 09:33:04,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-08-29 09:33:04,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-08-29 09:33:04,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-08-29 09:33:04,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-08-29 09:33:04,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-08-29 09:33:04,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-08-29 09:33:04,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 09:33:04,142 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:33:04,143 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:33:04,143 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 09:33:04,154 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:33:04,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 90 transitions, 192 flow [2023-08-29 09:33:04,166 INFO L130 PetriNetUnfolder]: 11/112 cut-off events. [2023-08-29 09:33:04,166 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 09:33:04,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 112 events. 11/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 199 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2023-08-29 09:33:04,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 90 transitions, 192 flow [2023-08-29 09:33:04,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 90 transitions, 192 flow [2023-08-29 09:33:04,168 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:33:04,168 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 90 transitions, 192 flow [2023-08-29 09:33:04,168 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 90 transitions, 192 flow [2023-08-29 09:33:04,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 90 transitions, 192 flow [2023-08-29 09:33:04,177 INFO L130 PetriNetUnfolder]: 11/112 cut-off events. [2023-08-29 09:33:04,177 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 09:33:04,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 112 events. 11/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 199 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2023-08-29 09:33:04,180 INFO L119 LiptonReduction]: Number of co-enabled transitions 3776 [2023-08-29 09:33:05,774 INFO L134 LiptonReduction]: Checked pairs total: 3487 [2023-08-29 09:33:05,775 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-08-29 09:33:05,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:33:05,778 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;@59d9baa0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:33:05,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-29 09:33:05,779 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:33:05,780 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:33:05,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:33:05,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:33:05,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-08-29 09:33:05,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:33:05,780 INFO L85 PathProgramCache]: Analyzing trace with hash 16509312, now seen corresponding path program 1 times [2023-08-29 09:33:05,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:33:05,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923905689] [2023-08-29 09:33:05,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:33:05,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:33:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:33:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:33:05,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:33:05,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923905689] [2023-08-29 09:33:05,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923905689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:33:05,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:33:05,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:33:05,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732332823] [2023-08-29 09:33:05,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:33:05,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:33:05,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:33:05,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:33:05,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:33:05,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 182 [2023-08-29 09:33:05,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 flow. Second operand has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:05,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:33:05,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 182 [2023-08-29 09:33:05,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:33:05,825 INFO L130 PetriNetUnfolder]: 20/57 cut-off events. [2023-08-29 09:33:05,828 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-29 09:33:05,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 57 events. 20/57 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 162 event pairs, 20 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 28. Up to 47 conditions per place. [2023-08-29 09:33:05,828 INFO L137 encePairwiseOnDemand]: 173/182 looper letters, 8 selfloop transitions, 0 changer transitions 0/11 dead transitions. [2023-08-29 09:33:05,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 11 transitions, 50 flow [2023-08-29 09:33:05,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:33:05,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:33:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 157 transitions. [2023-08-29 09:33:05,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43131868131868134 [2023-08-29 09:33:05,832 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 157 transitions. [2023-08-29 09:33:05,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 157 transitions. [2023-08-29 09:33:05,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:33:05,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 157 transitions. [2023-08-29 09:33:05,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 78.5) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:05,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:05,836 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:05,836 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 2 states and 157 transitions. [2023-08-29 09:33:05,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 11 transitions, 50 flow [2023-08-29 09:33:05,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 11 transitions, 48 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-29 09:33:05,837 INFO L231 Difference]: Finished difference. Result has 17 places, 11 transitions, 32 flow [2023-08-29 09:33:05,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=11} [2023-08-29 09:33:05,838 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, -8 predicate places. [2023-08-29 09:33:05,838 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 11 transitions, 32 flow [2023-08-29 09:33:05,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:05,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:33:05,838 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 09:33:05,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 09:33:05,839 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-08-29 09:33:05,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:33:05,839 INFO L85 PathProgramCache]: Analyzing trace with hash 986835608, now seen corresponding path program 1 times [2023-08-29 09:33:05,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:33:05,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605406940] [2023-08-29 09:33:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:33:05,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:33:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:33:05,865 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:33:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:33:05,876 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:33:05,876 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:33:05,878 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-08-29 09:33:05,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-08-29 09:33:05,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-08-29 09:33:05,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-08-29 09:33:05,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2023-08-29 09:33:05,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-08-29 09:33:05,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-08-29 09:33:05,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-08-29 09:33:05,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-08-29 09:33:05,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-08-29 09:33:05,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-08-29 09:33:05,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-08-29 09:33:05,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-08-29 09:33:05,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 09:33:05,880 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:33:05,880 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:33:05,880 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 09:33:05,900 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:33:05,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 267 flow [2023-08-29 09:33:05,922 INFO L130 PetriNetUnfolder]: 16/157 cut-off events. [2023-08-29 09:33:05,922 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 09:33:05,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 157 events. 16/157 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 365 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2023-08-29 09:33:05,923 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 123 transitions, 267 flow [2023-08-29 09:33:05,924 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 123 transitions, 267 flow [2023-08-29 09:33:05,925 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:33:05,925 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 123 transitions, 267 flow [2023-08-29 09:33:05,925 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 123 transitions, 267 flow [2023-08-29 09:33:05,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 123 transitions, 267 flow [2023-08-29 09:33:05,937 INFO L130 PetriNetUnfolder]: 16/157 cut-off events. [2023-08-29 09:33:05,952 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 09:33:05,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 157 events. 16/157 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 365 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2023-08-29 09:33:05,957 INFO L119 LiptonReduction]: Number of co-enabled transitions 8832 [2023-08-29 09:33:08,318 INFO L134 LiptonReduction]: Checked pairs total: 8988 [2023-08-29 09:33:08,318 INFO L136 LiptonReduction]: Total number of compositions: 138 [2023-08-29 09:33:08,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:33:08,338 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;@59d9baa0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:33:08,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 09:33:08,340 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:33:08,340 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:33:08,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:33:08,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:33:08,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-08-29 09:33:08,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:33:08,341 INFO L85 PathProgramCache]: Analyzing trace with hash 25151835, now seen corresponding path program 1 times [2023-08-29 09:33:08,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:33:08,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258108286] [2023-08-29 09:33:08,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:33:08,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:33:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:33:08,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:33:08,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:33:08,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258108286] [2023-08-29 09:33:08,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258108286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:33:08,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:33:08,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:33:08,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551988349] [2023-08-29 09:33:08,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:33:08,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:33:08,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:33:08,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:33:08,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:33:08,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 261 [2023-08-29 09:33:08,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 75 flow. Second operand has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:08,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:33:08,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 261 [2023-08-29 09:33:08,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:33:08,416 INFO L130 PetriNetUnfolder]: 110/225 cut-off events. [2023-08-29 09:33:08,416 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-08-29 09:33:08,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 225 events. 110/225 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 896 event pairs, 110 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 127. Up to 191 conditions per place. [2023-08-29 09:33:08,417 INFO L137 encePairwiseOnDemand]: 248/261 looper letters, 11 selfloop transitions, 0 changer transitions 0/14 dead transitions. [2023-08-29 09:33:08,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 71 flow [2023-08-29 09:33:08,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:33:08,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:33:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 212 transitions. [2023-08-29 09:33:08,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4061302681992337 [2023-08-29 09:33:08,423 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 212 transitions. [2023-08-29 09:33:08,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 212 transitions. [2023-08-29 09:33:08,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:33:08,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 212 transitions. [2023-08-29 09:33:08,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 106.0) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:08,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:08,429 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:08,429 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 75 flow. Second operand 2 states and 212 transitions. [2023-08-29 09:33:08,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 71 flow [2023-08-29 09:33:08,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 14 transitions, 65 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-29 09:33:08,430 INFO L231 Difference]: Finished difference. Result has 22 places, 14 transitions, 43 flow [2023-08-29 09:33:08,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=43, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2023-08-29 09:33:08,431 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -12 predicate places. [2023-08-29 09:33:08,431 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 43 flow [2023-08-29 09:33:08,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:08,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:33:08,432 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-29 09:33:08,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 09:33:08,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-08-29 09:33:08,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:33:08,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1786855508, now seen corresponding path program 1 times [2023-08-29 09:33:08,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:33:08,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797655036] [2023-08-29 09:33:08,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:33:08,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:33:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:33:08,448 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:33:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:33:08,464 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:33:08,467 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:33:08,467 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-29 09:33:08,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-08-29 09:33:08,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-08-29 09:33:08,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-08-29 09:33:08,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-08-29 09:33:08,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-08-29 09:33:08,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-08-29 09:33:08,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-08-29 09:33:08,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-08-29 09:33:08,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-08-29 09:33:08,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-08-29 09:33:08,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-08-29 09:33:08,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-08-29 09:33:08,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-08-29 09:33:08,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-08-29 09:33:08,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-08-29 09:33:08,473 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-08-29 09:33:08,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 09:33:08,473 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:33:08,474 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:33:08,474 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-29 09:33:08,501 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:33:08,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 156 transitions, 344 flow [2023-08-29 09:33:08,517 INFO L130 PetriNetUnfolder]: 21/202 cut-off events. [2023-08-29 09:33:08,518 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-29 09:33:08,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 202 events. 21/202 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 539 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 165. Up to 10 conditions per place. [2023-08-29 09:33:08,519 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 156 transitions, 344 flow [2023-08-29 09:33:08,521 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 156 transitions, 344 flow [2023-08-29 09:33:08,521 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:33:08,521 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 156 transitions, 344 flow [2023-08-29 09:33:08,521 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 156 transitions, 344 flow [2023-08-29 09:33:08,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 156 transitions, 344 flow [2023-08-29 09:33:08,535 INFO L130 PetriNetUnfolder]: 21/202 cut-off events. [2023-08-29 09:33:08,535 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-29 09:33:08,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 202 events. 21/202 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 539 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 165. Up to 10 conditions per place. [2023-08-29 09:33:08,542 INFO L119 LiptonReduction]: Number of co-enabled transitions 16000 [2023-08-29 09:33:11,109 INFO L134 LiptonReduction]: Checked pairs total: 15932 [2023-08-29 09:33:11,109 INFO L136 LiptonReduction]: Total number of compositions: 175 [2023-08-29 09:33:11,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:33:11,112 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;@59d9baa0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:33:11,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-29 09:33:11,114 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:33:11,114 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:33:11,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:33:11,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:33:11,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 09:33:11,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:33:11,117 INFO L85 PathProgramCache]: Analyzing trace with hash 36223432, now seen corresponding path program 1 times [2023-08-29 09:33:11,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:33:11,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970067871] [2023-08-29 09:33:11,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:33:11,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:33:11,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:33:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:33:11,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:33:11,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970067871] [2023-08-29 09:33:11,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970067871] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:33:11,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:33:11,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:33:11,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350846414] [2023-08-29 09:33:11,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:33:11,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:33:11,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:33:11,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:33:11,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:33:11,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 331 [2023-08-29 09:33:11,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 100 flow. Second operand has 2 states, 2 states have (on average 120.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:11,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:33:11,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 331 [2023-08-29 09:33:11,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:33:11,259 INFO L130 PetriNetUnfolder]: 488/837 cut-off events. [2023-08-29 09:33:11,259 INFO L131 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2023-08-29 09:33:11,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1863 conditions, 837 events. 488/837 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3922 event pairs, 488 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 511. Up to 731 conditions per place. [2023-08-29 09:33:11,263 INFO L137 encePairwiseOnDemand]: 314/331 looper letters, 14 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-08-29 09:33:11,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 17 transitions, 94 flow [2023-08-29 09:33:11,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:33:11,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:33:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 267 transitions. [2023-08-29 09:33:11,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4033232628398791 [2023-08-29 09:33:11,265 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 267 transitions. [2023-08-29 09:33:11,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 267 transitions. [2023-08-29 09:33:11,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:33:11,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 267 transitions. [2023-08-29 09:33:11,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:11,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:11,271 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:11,271 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 100 flow. Second operand 2 states and 267 transitions. [2023-08-29 09:33:11,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 17 transitions, 94 flow [2023-08-29 09:33:11,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 17 transitions, 82 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-29 09:33:11,274 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 54 flow [2023-08-29 09:33:11,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2023-08-29 09:33:11,276 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -16 predicate places. [2023-08-29 09:33:11,276 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 54 flow [2023-08-29 09:33:11,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 120.0) internal successors, (240), 2 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:11,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:33:11,277 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-29 09:33:11,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 09:33:11,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 09:33:11,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:33:11,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1503702457, now seen corresponding path program 1 times [2023-08-29 09:33:11,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:33:11,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822227716] [2023-08-29 09:33:11,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:33:11,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:33:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:33:11,303 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:33:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:33:11,326 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:33:11,328 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:33:11,328 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-08-29 09:33:11,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2023-08-29 09:33:11,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2023-08-29 09:33:11,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2023-08-29 09:33:11,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2023-08-29 09:33:11,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2023-08-29 09:33:11,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2023-08-29 09:33:11,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2023-08-29 09:33:11,330 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2023-08-29 09:33:11,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2023-08-29 09:33:11,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2023-08-29 09:33:11,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2023-08-29 09:33:11,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2023-08-29 09:33:11,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2023-08-29 09:33:11,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2023-08-29 09:33:11,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2023-08-29 09:33:11,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2023-08-29 09:33:11,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2023-08-29 09:33:11,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2023-08-29 09:33:11,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2023-08-29 09:33:11,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2023-08-29 09:33:11,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 09:33:11,334 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:33:11,335 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:33:11,335 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-29 09:33:11,353 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:33:11,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 189 transitions, 423 flow [2023-08-29 09:33:11,387 INFO L130 PetriNetUnfolder]: 26/247 cut-off events. [2023-08-29 09:33:11,388 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-29 09:33:11,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 247 events. 26/247 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 708 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 216. Up to 12 conditions per place. [2023-08-29 09:33:11,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 189 transitions, 423 flow [2023-08-29 09:33:11,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 189 transitions, 423 flow [2023-08-29 09:33:11,392 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:33:11,392 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 189 transitions, 423 flow [2023-08-29 09:33:11,392 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 189 transitions, 423 flow [2023-08-29 09:33:11,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 189 transitions, 423 flow [2023-08-29 09:33:11,408 INFO L130 PetriNetUnfolder]: 26/247 cut-off events. [2023-08-29 09:33:11,408 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-29 09:33:11,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 247 events. 26/247 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 708 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 216. Up to 12 conditions per place. [2023-08-29 09:33:11,418 INFO L119 LiptonReduction]: Number of co-enabled transitions 25280 [2023-08-29 09:33:15,054 INFO L134 LiptonReduction]: Checked pairs total: 26211 [2023-08-29 09:33:15,055 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-08-29 09:33:15,057 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:33:15,057 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;@59d9baa0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:33:15,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-29 09:33:15,059 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:33:15,059 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:33:15,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:33:15,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:33:15,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-29 09:33:15,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:33:15,060 INFO L85 PathProgramCache]: Analyzing trace with hash 49233638, now seen corresponding path program 1 times [2023-08-29 09:33:15,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:33:15,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359434972] [2023-08-29 09:33:15,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:33:15,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:33:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:33:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:33:15,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:33:15,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359434972] [2023-08-29 09:33:15,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359434972] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:33:15,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:33:15,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:33:15,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5268672] [2023-08-29 09:33:15,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:33:15,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:33:15,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:33:15,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:33:15,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:33:15,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 405 [2023-08-29 09:33:15,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 127 flow. Second operand has 2 states, 2 states have (on average 144.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:15,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:33:15,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 405 [2023-08-29 09:33:15,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:33:15,344 INFO L130 PetriNetUnfolder]: 1946/2997 cut-off events. [2023-08-29 09:33:15,344 INFO L131 PetriNetUnfolder]: For 2176/2176 co-relation queries the response was YES. [2023-08-29 09:33:15,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6751 conditions, 2997 events. 1946/2997 cut-off events. For 2176/2176 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 15412 event pairs, 1946 based on Foata normal form. 0/2876 useless extension candidates. Maximal degree in co-relation 1924. Up to 2675 conditions per place. [2023-08-29 09:33:15,357 INFO L137 encePairwiseOnDemand]: 384/405 looper letters, 17 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2023-08-29 09:33:15,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 20 transitions, 119 flow [2023-08-29 09:33:15,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:33:15,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:33:15,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 322 transitions. [2023-08-29 09:33:15,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39753086419753086 [2023-08-29 09:33:15,358 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 322 transitions. [2023-08-29 09:33:15,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 322 transitions. [2023-08-29 09:33:15,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:33:15,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 322 transitions. [2023-08-29 09:33:15,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 161.0) internal successors, (322), 2 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:15,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 405.0) internal successors, (1215), 3 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:15,362 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 405.0) internal successors, (1215), 3 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:15,362 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 127 flow. Second operand 2 states and 322 transitions. [2023-08-29 09:33:15,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 20 transitions, 119 flow [2023-08-29 09:33:15,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 99 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-29 09:33:15,365 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 65 flow [2023-08-29 09:33:15,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=405, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=65, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2023-08-29 09:33:15,367 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -20 predicate places. [2023-08-29 09:33:15,367 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 65 flow [2023-08-29 09:33:15,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 144.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:15,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:33:15,367 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:33:15,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 09:33:15,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-29 09:33:15,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:33:15,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1930798686, now seen corresponding path program 1 times [2023-08-29 09:33:15,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:33:15,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046404617] [2023-08-29 09:33:15,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:33:15,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:33:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:33:15,386 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:33:15,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:33:15,405 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:33:15,406 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:33:15,406 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-08-29 09:33:15,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-08-29 09:33:15,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-08-29 09:33:15,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-08-29 09:33:15,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-08-29 09:33:15,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-08-29 09:33:15,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-08-29 09:33:15,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-08-29 09:33:15,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-08-29 09:33:15,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-08-29 09:33:15,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-08-29 09:33:15,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-08-29 09:33:15,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-08-29 09:33:15,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-08-29 09:33:15,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-08-29 09:33:15,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2023-08-29 09:33:15,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2023-08-29 09:33:15,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-08-29 09:33:15,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-08-29 09:33:15,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-08-29 09:33:15,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-08-29 09:33:15,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-08-29 09:33:15,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-08-29 09:33:15,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-08-29 09:33:15,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-08-29 09:33:15,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 09:33:15,409 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:33:15,410 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:33:15,410 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-29 09:33:15,427 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:33:15,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 222 transitions, 504 flow [2023-08-29 09:33:15,464 INFO L130 PetriNetUnfolder]: 31/292 cut-off events. [2023-08-29 09:33:15,464 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-29 09:33:15,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 292 events. 31/292 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 859 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 269. Up to 14 conditions per place. [2023-08-29 09:33:15,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 222 transitions, 504 flow [2023-08-29 09:33:15,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 222 transitions, 504 flow [2023-08-29 09:33:15,469 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:33:15,470 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 222 transitions, 504 flow [2023-08-29 09:33:15,470 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 222 transitions, 504 flow [2023-08-29 09:33:15,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 222 transitions, 504 flow [2023-08-29 09:33:15,498 INFO L130 PetriNetUnfolder]: 31/292 cut-off events. [2023-08-29 09:33:15,498 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-29 09:33:15,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 292 events. 31/292 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 859 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 269. Up to 14 conditions per place. [2023-08-29 09:33:15,508 INFO L119 LiptonReduction]: Number of co-enabled transitions 36672 [2023-08-29 09:33:18,961 INFO L134 LiptonReduction]: Checked pairs total: 36577 [2023-08-29 09:33:18,962 INFO L136 LiptonReduction]: Total number of compositions: 249 [2023-08-29 09:33:18,963 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:33:18,964 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;@59d9baa0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:33:18,964 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-29 09:33:18,965 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:33:18,965 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:33:18,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:33:18,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:33:18,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 09:33:18,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:33:18,966 INFO L85 PathProgramCache]: Analyzing trace with hash 64708343, now seen corresponding path program 1 times [2023-08-29 09:33:18,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:33:18,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634370968] [2023-08-29 09:33:18,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:33:18,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:33:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:33:18,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:33:18,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:33:18,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634370968] [2023-08-29 09:33:18,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634370968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:33:18,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:33:18,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:33:18,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875125322] [2023-08-29 09:33:18,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:33:18,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:33:18,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:33:18,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:33:18,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:33:18,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 471 [2023-08-29 09:33:18,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 156 flow. Second operand has 2 states, 2 states have (on average 168.0) internal successors, (336), 2 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:18,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:33:18,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 471 [2023-08-29 09:33:18,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:33:19,871 INFO L130 PetriNetUnfolder]: 7292/10449 cut-off events. [2023-08-29 09:33:19,872 INFO L131 PetriNetUnfolder]: For 9628/9628 co-relation queries the response was YES. [2023-08-29 09:33:19,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23762 conditions, 10449 events. 7292/10449 cut-off events. For 9628/9628 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 57304 event pairs, 7292 based on Foata normal form. 0/10085 useless extension candidates. Maximal degree in co-relation 6946. Up to 9479 conditions per place. [2023-08-29 09:33:19,918 INFO L137 encePairwiseOnDemand]: 446/471 looper letters, 20 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2023-08-29 09:33:19,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 23 transitions, 146 flow [2023-08-29 09:33:19,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:33:19,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:33:19,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 377 transitions. [2023-08-29 09:33:19,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4002123142250531 [2023-08-29 09:33:19,919 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 377 transitions. [2023-08-29 09:33:19,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 377 transitions. [2023-08-29 09:33:19,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:33:19,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 377 transitions. [2023-08-29 09:33:19,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 188.5) internal successors, (377), 2 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:19,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 471.0) internal successors, (1413), 3 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:19,922 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 471.0) internal successors, (1413), 3 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:19,922 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 156 flow. Second operand 2 states and 377 transitions. [2023-08-29 09:33:19,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 23 transitions, 146 flow [2023-08-29 09:33:19,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 23 transitions, 116 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-08-29 09:33:19,965 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 76 flow [2023-08-29 09:33:19,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=471, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2023-08-29 09:33:19,967 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -24 predicate places. [2023-08-29 09:33:19,967 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 76 flow [2023-08-29 09:33:19,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 168.0) internal successors, (336), 2 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:19,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:33:19,967 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:33:19,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 09:33:19,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 09:33:19,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:33:19,968 INFO L85 PathProgramCache]: Analyzing trace with hash 645597378, now seen corresponding path program 1 times [2023-08-29 09:33:19,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:33:19,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124776282] [2023-08-29 09:33:19,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:33:19,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:33:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:33:19,983 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:33:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:33:19,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:33:19,991 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:33:19,992 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-08-29 09:33:19,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2023-08-29 09:33:19,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2023-08-29 09:33:19,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2023-08-29 09:33:19,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2023-08-29 09:33:19,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2023-08-29 09:33:19,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2023-08-29 09:33:19,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2023-08-29 09:33:19,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2023-08-29 09:33:19,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2023-08-29 09:33:19,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2023-08-29 09:33:19,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2023-08-29 09:33:19,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2023-08-29 09:33:19,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2023-08-29 09:33:19,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2023-08-29 09:33:19,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2023-08-29 09:33:19,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2023-08-29 09:33:19,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2023-08-29 09:33:19,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2023-08-29 09:33:19,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2023-08-29 09:33:19,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2023-08-29 09:33:19,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2023-08-29 09:33:19,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2023-08-29 09:33:19,994 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2023-08-29 09:33:19,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2023-08-29 09:33:19,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2023-08-29 09:33:19,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2023-08-29 09:33:19,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2023-08-29 09:33:19,995 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2023-08-29 09:33:19,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 09:33:19,995 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:33:19,997 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:33:19,997 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-29 09:33:20,026 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:33:20,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 255 transitions, 587 flow [2023-08-29 09:33:20,067 INFO L130 PetriNetUnfolder]: 36/337 cut-off events. [2023-08-29 09:33:20,067 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-29 09:33:20,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 337 events. 36/337 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1040 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 323. Up to 16 conditions per place. [2023-08-29 09:33:20,072 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 255 transitions, 587 flow [2023-08-29 09:33:20,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 255 transitions, 587 flow [2023-08-29 09:33:20,075 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:33:20,076 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 255 transitions, 587 flow [2023-08-29 09:33:20,076 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 255 transitions, 587 flow [2023-08-29 09:33:20,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 255 transitions, 587 flow [2023-08-29 09:33:20,112 INFO L130 PetriNetUnfolder]: 36/337 cut-off events. [2023-08-29 09:33:20,112 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-29 09:33:20,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 337 events. 36/337 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1040 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 323. Up to 16 conditions per place. [2023-08-29 09:33:20,127 INFO L119 LiptonReduction]: Number of co-enabled transitions 50176 [2023-08-29 09:33:24,565 INFO L134 LiptonReduction]: Checked pairs total: 50648 [2023-08-29 09:33:24,566 INFO L136 LiptonReduction]: Total number of compositions: 287 [2023-08-29 09:33:24,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:33:24,567 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;@59d9baa0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:33:24,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-08-29 09:33:24,568 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:33:24,568 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:33:24,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:33:24,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:33:24,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-29 09:33:24,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:33:24,568 INFO L85 PathProgramCache]: Analyzing trace with hash 82528991, now seen corresponding path program 1 times [2023-08-29 09:33:24,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:33:24,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820537247] [2023-08-29 09:33:24,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:33:24,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:33:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:33:24,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:33:24,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:33:24,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820537247] [2023-08-29 09:33:24,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820537247] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:33:24,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:33:24,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:33:24,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31024069] [2023-08-29 09:33:24,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:33:24,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:33:24,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:33:24,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:33:24,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:33:24,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 542 [2023-08-29 09:33:24,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 187 flow. Second operand has 2 states, 2 states have (on average 192.0) internal successors, (384), 2 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:24,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:33:24,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 542 [2023-08-29 09:33:24,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:33:27,521 INFO L130 PetriNetUnfolder]: 26246/35721 cut-off events. [2023-08-29 09:33:27,522 INFO L131 PetriNetUnfolder]: For 40003/40003 co-relation queries the response was YES. [2023-08-29 09:33:27,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81840 conditions, 35721 events. 26246/35721 cut-off events. For 40003/40003 co-relation queries the response was YES. Maximal size of possible extension queue 1425. Compared 205646 event pairs, 26246 based on Foata normal form. 0/34628 useless extension candidates. Maximal degree in co-relation 24361. Up to 32807 conditions per place. [2023-08-29 09:33:27,686 INFO L137 encePairwiseOnDemand]: 513/542 looper letters, 23 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-08-29 09:33:27,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 175 flow [2023-08-29 09:33:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:33:27,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:33:27,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 432 transitions. [2023-08-29 09:33:27,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3985239852398524 [2023-08-29 09:33:27,687 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 432 transitions. [2023-08-29 09:33:27,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 432 transitions. [2023-08-29 09:33:27,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:33:27,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 432 transitions. [2023-08-29 09:33:27,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 216.0) internal successors, (432), 2 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:27,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 542.0) internal successors, (1626), 3 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:27,691 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 542.0) internal successors, (1626), 3 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:27,691 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 187 flow. Second operand 2 states and 432 transitions. [2023-08-29 09:33:27,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 175 flow [2023-08-29 09:33:27,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 26 transitions, 133 flow, removed 21 selfloop flow, removed 0 redundant places. [2023-08-29 09:33:27,729 INFO L231 Difference]: Finished difference. Result has 42 places, 26 transitions, 87 flow [2023-08-29 09:33:27,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=542, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=87, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2023-08-29 09:33:27,730 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, -28 predicate places. [2023-08-29 09:33:27,730 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 87 flow [2023-08-29 09:33:27,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 192.0) internal successors, (384), 2 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:27,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:33:27,731 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:33:27,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 09:33:27,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-29 09:33:27,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:33:27,731 INFO L85 PathProgramCache]: Analyzing trace with hash 797353014, now seen corresponding path program 1 times [2023-08-29 09:33:27,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:33:27,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179497438] [2023-08-29 09:33:27,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:33:27,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:33:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:33:27,748 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:33:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:33:27,764 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:33:27,765 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:33:27,765 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2023-08-29 09:33:27,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2023-08-29 09:33:27,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2023-08-29 09:33:27,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2023-08-29 09:33:27,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2023-08-29 09:33:27,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2023-08-29 09:33:27,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2023-08-29 09:33:27,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2023-08-29 09:33:27,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2023-08-29 09:33:27,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2023-08-29 09:33:27,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2023-08-29 09:33:27,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2023-08-29 09:33:27,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2023-08-29 09:33:27,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2023-08-29 09:33:27,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2023-08-29 09:33:27,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2023-08-29 09:33:27,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2023-08-29 09:33:27,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2023-08-29 09:33:27,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2023-08-29 09:33:27,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2023-08-29 09:33:27,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2023-08-29 09:33:27,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2023-08-29 09:33:27,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2023-08-29 09:33:27,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2023-08-29 09:33:27,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2023-08-29 09:33:27,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2023-08-29 09:33:27,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2023-08-29 09:33:27,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2023-08-29 09:33:27,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2023-08-29 09:33:27,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2023-08-29 09:33:27,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2023-08-29 09:33:27,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2023-08-29 09:33:27,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2023-08-29 09:33:27,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 09:33:27,769 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:33:27,769 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:33:27,769 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-29 09:33:27,794 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:33:27,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 288 transitions, 672 flow [2023-08-29 09:33:27,831 INFO L130 PetriNetUnfolder]: 41/382 cut-off events. [2023-08-29 09:33:27,831 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-29 09:33:27,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 382 events. 41/382 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1200 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 378. Up to 18 conditions per place. [2023-08-29 09:33:27,836 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 288 transitions, 672 flow [2023-08-29 09:33:27,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 272 places, 288 transitions, 672 flow [2023-08-29 09:33:27,839 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:33:27,840 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 272 places, 288 transitions, 672 flow [2023-08-29 09:33:27,840 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 272 places, 288 transitions, 672 flow [2023-08-29 09:33:27,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 288 transitions, 672 flow [2023-08-29 09:33:27,875 INFO L130 PetriNetUnfolder]: 41/382 cut-off events. [2023-08-29 09:33:27,875 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-29 09:33:27,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 382 events. 41/382 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1200 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 378. Up to 18 conditions per place. [2023-08-29 09:33:27,893 INFO L119 LiptonReduction]: Number of co-enabled transitions 65792 [2023-08-29 09:33:32,232 INFO L134 LiptonReduction]: Checked pairs total: 67330 [2023-08-29 09:33:32,232 INFO L136 LiptonReduction]: Total number of compositions: 329 [2023-08-29 09:33:32,234 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:33:32,234 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;@59d9baa0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:33:32,234 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-08-29 09:33:32,235 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:33:32,235 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:33:32,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:33:32,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:33:32,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-08-29 09:33:32,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:33:32,236 INFO L85 PathProgramCache]: Analyzing trace with hash 102411359, now seen corresponding path program 1 times [2023-08-29 09:33:32,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:33:32,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23525342] [2023-08-29 09:33:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:33:32,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:33:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:33:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:33:32,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:33:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23525342] [2023-08-29 09:33:32,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23525342] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:33:32,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:33:32,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:33:32,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711818121] [2023-08-29 09:33:32,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:33:32,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:33:32,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:33:32,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:33:32,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:33:32,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 617 [2023-08-29 09:33:32,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 62 transitions, 220 flow. Second operand has 2 states, 2 states have (on average 216.0) internal successors, (432), 2 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:32,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:33:32,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 617 [2023-08-29 09:33:32,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:33:42,556 INFO L130 PetriNetUnfolder]: 91856/120285 cut-off events. [2023-08-29 09:33:42,557 INFO L131 PetriNetUnfolder]: For 158830/158830 co-relation queries the response was YES. [2023-08-29 09:33:42,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277213 conditions, 120285 events. 91856/120285 cut-off events. For 158830/158830 co-relation queries the response was YES. Maximal size of possible extension queue 4108. Compared 716499 event pairs, 91856 based on Foata normal form. 0/117005 useless extension candidates. Maximal degree in co-relation 83653. Up to 111539 conditions per place. [2023-08-29 09:33:43,337 INFO L137 encePairwiseOnDemand]: 584/617 looper letters, 26 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-08-29 09:33:43,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 29 transitions, 206 flow [2023-08-29 09:33:43,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:33:43,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:33:43,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 487 transitions. [2023-08-29 09:33:43,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946515397082658 [2023-08-29 09:33:43,339 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 487 transitions. [2023-08-29 09:33:43,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 487 transitions. [2023-08-29 09:33:43,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:33:43,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 487 transitions. [2023-08-29 09:33:43,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 243.5) internal successors, (487), 2 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:43,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 617.0) internal successors, (1851), 3 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:43,343 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 617.0) internal successors, (1851), 3 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:43,344 INFO L175 Difference]: Start difference. First operand has 79 places, 62 transitions, 220 flow. Second operand 2 states and 487 transitions. [2023-08-29 09:33:43,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 29 transitions, 206 flow [2023-08-29 09:33:43,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 29 transitions, 150 flow, removed 28 selfloop flow, removed 0 redundant places. [2023-08-29 09:33:43,520 INFO L231 Difference]: Finished difference. Result has 47 places, 29 transitions, 98 flow [2023-08-29 09:33:43,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=617, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=47, PETRI_TRANSITIONS=29} [2023-08-29 09:33:43,520 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -32 predicate places. [2023-08-29 09:33:43,520 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 29 transitions, 98 flow [2023-08-29 09:33:43,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 216.0) internal successors, (432), 2 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:33:43,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:33:43,521 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:33:43,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 09:33:43,521 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2023-08-29 09:33:43,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:33:43,522 INFO L85 PathProgramCache]: Analyzing trace with hash 244546697, now seen corresponding path program 1 times [2023-08-29 09:33:43,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:33:43,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110929449] [2023-08-29 09:33:43,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:33:43,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:33:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:33:43,533 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:33:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:33:43,542 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:33:43,543 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:33:43,543 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2023-08-29 09:33:43,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining) [2023-08-29 09:33:43,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining) [2023-08-29 09:33:43,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining) [2023-08-29 09:33:43,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining) [2023-08-29 09:33:43,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining) [2023-08-29 09:33:43,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining) [2023-08-29 09:33:43,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining) [2023-08-29 09:33:43,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining) [2023-08-29 09:33:43,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining) [2023-08-29 09:33:43,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining) [2023-08-29 09:33:43,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining) [2023-08-29 09:33:43,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining) [2023-08-29 09:33:43,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining) [2023-08-29 09:33:43,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining) [2023-08-29 09:33:43,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining) [2023-08-29 09:33:43,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining) [2023-08-29 09:33:43,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining) [2023-08-29 09:33:43,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining) [2023-08-29 09:33:43,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining) [2023-08-29 09:33:43,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining) [2023-08-29 09:33:43,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining) [2023-08-29 09:33:43,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining) [2023-08-29 09:33:43,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining) [2023-08-29 09:33:43,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining) [2023-08-29 09:33:43,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining) [2023-08-29 09:33:43,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining) [2023-08-29 09:33:43,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining) [2023-08-29 09:33:43,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining) [2023-08-29 09:33:43,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining) [2023-08-29 09:33:43,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining) [2023-08-29 09:33:43,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining) [2023-08-29 09:33:43,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining) [2023-08-29 09:33:43,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining) [2023-08-29 09:33:43,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining) [2023-08-29 09:33:43,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining) [2023-08-29 09:33:43,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining) [2023-08-29 09:33:43,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 09:33:43,548 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:33:43,548 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:33:43,549 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-29 09:33:43,576 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:33:43,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 321 transitions, 759 flow [2023-08-29 09:33:43,631 INFO L130 PetriNetUnfolder]: 46/427 cut-off events. [2023-08-29 09:33:43,631 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-29 09:33:43,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 427 events. 46/427 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1371 event pairs, 0 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 434. Up to 20 conditions per place. [2023-08-29 09:33:43,639 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 321 transitions, 759 flow [2023-08-29 09:33:43,643 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 303 places, 321 transitions, 759 flow [2023-08-29 09:33:43,643 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:33:43,643 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 303 places, 321 transitions, 759 flow [2023-08-29 09:33:43,643 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 303 places, 321 transitions, 759 flow [2023-08-29 09:33:43,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 321 transitions, 759 flow [2023-08-29 09:33:43,695 INFO L130 PetriNetUnfolder]: 46/427 cut-off events. [2023-08-29 09:33:43,696 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-29 09:33:43,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 427 events. 46/427 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1371 event pairs, 0 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 434. Up to 20 conditions per place. [2023-08-29 09:33:43,721 INFO L119 LiptonReduction]: Number of co-enabled transitions 83520 [2023-08-29 09:33:48,063 INFO L134 LiptonReduction]: Checked pairs total: 87088 [2023-08-29 09:33:48,064 INFO L136 LiptonReduction]: Total number of compositions: 372 [2023-08-29 09:33:48,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:33:48,066 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;@59d9baa0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:33:48,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-08-29 09:33:48,067 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:33:48,067 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:33:48,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:33:48,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:33:48,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-29 09:33:48,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:33:48,068 INFO L85 PathProgramCache]: Analyzing trace with hash 124425739, now seen corresponding path program 1 times [2023-08-29 09:33:48,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:33:48,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314261537] [2023-08-29 09:33:48,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:33:48,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:33:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:33:48,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:33:48,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:33:48,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314261537] [2023-08-29 09:33:48,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314261537] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:33:48,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:33:48,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:33:48,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166146556] [2023-08-29 09:33:48,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:33:48,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:33:48,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:33:48,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:33:48,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:33:48,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 693 [2023-08-29 09:33:48,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 69 transitions, 255 flow. Second operand has 2 states, 2 states have (on average 240.0) internal successors, (480), 2 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 09:33:48,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:33:48,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 693 [2023-08-29 09:33:48,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:34:23,616 INFO L130 PetriNetUnfolder]: 314930/400221 cut-off events. [2023-08-29 09:34:23,617 INFO L131 PetriNetUnfolder]: For 609352/609352 co-relation queries the response was YES. [2023-08-29 09:34:24,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926753 conditions, 400221 events. 314930/400221 cut-off events. For 609352/609352 co-relation queries the response was YES. Maximal size of possible extension queue 11911. Compared 2456637 event pairs, 314930 based on Foata normal form. 0/390380 useless extension candidates. Maximal degree in co-relation 282670. Up to 373979 conditions per place. [2023-08-29 09:34:26,243 INFO L137 encePairwiseOnDemand]: 656/693 looper letters, 29 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-08-29 09:34:26,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 32 transitions, 239 flow [2023-08-29 09:34:26,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:34:26,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:34:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 542 transitions. [2023-08-29 09:34:26,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39105339105339104 [2023-08-29 09:34:26,245 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 542 transitions. [2023-08-29 09:34:26,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 542 transitions. [2023-08-29 09:34:26,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:34:26,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 542 transitions. [2023-08-29 09:34:26,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 271.0) internal successors, (542), 2 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:26,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 693.0) internal successors, (2079), 3 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:26,249 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 693.0) internal successors, (2079), 3 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:26,249 INFO L175 Difference]: Start difference. First operand has 88 places, 69 transitions, 255 flow. Second operand 2 states and 542 transitions. [2023-08-29 09:34:26,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 32 transitions, 239 flow [2023-08-29 09:34:26,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 32 transitions, 167 flow, removed 36 selfloop flow, removed 0 redundant places. [2023-08-29 09:34:26,739 INFO L231 Difference]: Finished difference. Result has 52 places, 32 transitions, 109 flow [2023-08-29 09:34:26,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=693, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=109, PETRI_PLACES=52, PETRI_TRANSITIONS=32} [2023-08-29 09:34:26,740 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, -36 predicate places. [2023-08-29 09:34:26,740 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 32 transitions, 109 flow [2023-08-29 09:34:26,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 240.0) internal successors, (480), 2 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 09:34:26,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:34:26,740 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:34:26,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-29 09:34:26,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2023-08-29 09:34:26,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:34:26,741 INFO L85 PathProgramCache]: Analyzing trace with hash 99264605, now seen corresponding path program 1 times [2023-08-29 09:34:26,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:34:26,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735327334] [2023-08-29 09:34:26,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:34:26,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:34:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:34:26,753 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 09:34:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 09:34:26,761 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 09:34:26,762 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 09:34:26,762 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2023-08-29 09:34:26,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (39 of 41 remaining) [2023-08-29 09:34:26,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (38 of 41 remaining) [2023-08-29 09:34:26,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (37 of 41 remaining) [2023-08-29 09:34:26,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (36 of 41 remaining) [2023-08-29 09:34:26,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 41 remaining) [2023-08-29 09:34:26,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (34 of 41 remaining) [2023-08-29 09:34:26,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (33 of 41 remaining) [2023-08-29 09:34:26,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 41 remaining) [2023-08-29 09:34:26,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 41 remaining) [2023-08-29 09:34:26,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 41 remaining) [2023-08-29 09:34:26,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 41 remaining) [2023-08-29 09:34:26,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 41 remaining) [2023-08-29 09:34:26,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 41 remaining) [2023-08-29 09:34:26,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 41 remaining) [2023-08-29 09:34:26,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 41 remaining) [2023-08-29 09:34:26,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 41 remaining) [2023-08-29 09:34:26,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 41 remaining) [2023-08-29 09:34:26,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 41 remaining) [2023-08-29 09:34:26,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 41 remaining) [2023-08-29 09:34:26,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 41 remaining) [2023-08-29 09:34:26,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 41 remaining) [2023-08-29 09:34:26,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 41 remaining) [2023-08-29 09:34:26,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 41 remaining) [2023-08-29 09:34:26,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 41 remaining) [2023-08-29 09:34:26,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 41 remaining) [2023-08-29 09:34:26,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 41 remaining) [2023-08-29 09:34:26,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 41 remaining) [2023-08-29 09:34:26,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 41 remaining) [2023-08-29 09:34:26,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 41 remaining) [2023-08-29 09:34:26,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 41 remaining) [2023-08-29 09:34:26,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 41 remaining) [2023-08-29 09:34:26,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 41 remaining) [2023-08-29 09:34:26,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 41 remaining) [2023-08-29 09:34:26,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 41 remaining) [2023-08-29 09:34:26,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 41 remaining) [2023-08-29 09:34:26,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 41 remaining) [2023-08-29 09:34:26,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 41 remaining) [2023-08-29 09:34:26,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 41 remaining) [2023-08-29 09:34:26,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 41 remaining) [2023-08-29 09:34:26,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 41 remaining) [2023-08-29 09:34:26,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 09:34:26,766 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-29 09:34:26,767 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 09:34:26,767 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-29 09:34:26,793 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 09:34:26,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 354 transitions, 848 flow [2023-08-29 09:34:26,842 INFO L130 PetriNetUnfolder]: 51/472 cut-off events. [2023-08-29 09:34:26,843 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-29 09:34:26,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 472 events. 51/472 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1539 event pairs, 0 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 491. Up to 22 conditions per place. [2023-08-29 09:34:26,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 334 places, 354 transitions, 848 flow [2023-08-29 09:34:26,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 334 places, 354 transitions, 848 flow [2023-08-29 09:34:26,853 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:34:26,853 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 334 places, 354 transitions, 848 flow [2023-08-29 09:34:26,853 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 334 places, 354 transitions, 848 flow [2023-08-29 09:34:26,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 354 transitions, 848 flow [2023-08-29 09:34:26,902 INFO L130 PetriNetUnfolder]: 51/472 cut-off events. [2023-08-29 09:34:26,902 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-29 09:34:26,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 472 events. 51/472 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1539 event pairs, 0 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 491. Up to 22 conditions per place. [2023-08-29 09:34:26,927 INFO L119 LiptonReduction]: Number of co-enabled transitions 103360 [2023-08-29 09:34:32,397 INFO L134 LiptonReduction]: Checked pairs total: 110207 [2023-08-29 09:34:32,397 INFO L136 LiptonReduction]: Total number of compositions: 418 [2023-08-29 09:34:32,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:34:32,399 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;@59d9baa0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:34:32,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2023-08-29 09:34:32,400 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-08-29 09:34:32,400 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:34:32,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:34:32,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 09:34:32,400 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-08-29 09:34:32,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:34:32,401 INFO L85 PathProgramCache]: Analyzing trace with hash 148963218, now seen corresponding path program 1 times [2023-08-29 09:34:32,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:34:32,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123054731] [2023-08-29 09:34:32,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:34:32,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:34:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:34:32,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:34:32,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:34:32,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123054731] [2023-08-29 09:34:32,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123054731] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:34:32,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:34:32,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 09:34:32,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604265371] [2023-08-29 09:34:32,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:34:32,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:34:32,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:34:32,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:34:32,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:34:32,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 772 [2023-08-29 09:34:32,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 76 transitions, 292 flow. Second operand has 2 states, 2 states have (on average 264.0) internal successors, (528), 2 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 09:34:32,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:34:32,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 772 [2023-08-29 09:34:32,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand