./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.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 c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 --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 17:34:43,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 17:34:43,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 17:34:43,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 17:34:43,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 17:34:43,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 17:34:43,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 17:34:43,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 17:34:43,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 17:34:43,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 17:34:43,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 17:34:43,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 17:34:43,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 17:34:43,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 17:34:43,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 17:34:43,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 17:34:43,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 17:34:43,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 17:34:43,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 17:34:43,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 17:34:43,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 17:34:43,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 17:34:43,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 17:34:43,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 17:34:43,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 17:34:43,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 17:34:43,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 17:34:43,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 17:34:43,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 17:34:43,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 17:34:43,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 17:34:43,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 17:34:43,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 17:34:43,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 17:34:43,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 17:34:43,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 17:34:43,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 17:34:43,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 17:34:43,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 17:34:43,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 17:34:43,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 17:34:43,440 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 17:34:43,481 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 17:34:43,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 17:34:43,483 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 17:34:43,483 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 17:34:43,484 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 17:34:43,484 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 17:34:43,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 17:34:43,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 17:34:43,485 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 17:34:43,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 17:34:43,486 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 17:34:43,486 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 17:34:43,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 17:34:43,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 17:34:43,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 17:34:43,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 17:34:43,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 17:34:43,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 17:34:43,488 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 17:34:43,488 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 17:34:43,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 17:34:43,488 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 17:34:43,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 17:34:43,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 17:34:43,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 17:34:43,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 17:34:43,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 17:34:43,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 17:34:43,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 17:34:43,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 17:34:43,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 17:34:43,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 17:34:43,490 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 17:34:43,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 17:34:43,491 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 17:34:43,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 17:34:43,491 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 17:34:43,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c18dd13658bb5739ed2db8c4c80ae330682b7c3cebd2ad85657518c27ca325b9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 17:34:43,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 17:34:43,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 17:34:43,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 17:34:43,840 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 17:34:43,840 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 17:34:43,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i [2023-08-29 17:34:45,093 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 17:34:45,402 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 17:34:45,403 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i [2023-08-29 17:34:45,417 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6b9383c5/b6cdb728be84457a88ea22d4578bcfab/FLAGad5ef8c4c [2023-08-29 17:34:45,430 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6b9383c5/b6cdb728be84457a88ea22d4578bcfab [2023-08-29 17:34:45,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 17:34:45,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 17:34:45,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 17:34:45,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 17:34:45,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 17:34:45,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 05:34:45" (1/1) ... [2023-08-29 17:34:45,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e6a84d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:34:45, skipping insertion in model container [2023-08-29 17:34:45,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 05:34:45" (1/1) ... [2023-08-29 17:34:45,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 17:34:45,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 17:34:45,832 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 17:34:45,850 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 17:34:45,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 17:34:45,951 INFO L208 MainTranslator]: Completed translation [2023-08-29 17:34:45,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:34:45 WrapperNode [2023-08-29 17:34:45,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 17:34:45,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 17:34:45,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 17:34:45,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 17:34:45,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:34:45" (1/1) ... [2023-08-29 17:34:45,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:34:45" (1/1) ... [2023-08-29 17:34:46,013 INFO L138 Inliner]: procedures = 264, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 90 [2023-08-29 17:34:46,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 17:34:46,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 17:34:46,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 17:34:46,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 17:34:46,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:34:45" (1/1) ... [2023-08-29 17:34:46,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:34:45" (1/1) ... [2023-08-29 17:34:46,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:34:45" (1/1) ... [2023-08-29 17:34:46,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:34:45" (1/1) ... [2023-08-29 17:34:46,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:34:45" (1/1) ... [2023-08-29 17:34:46,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:34:45" (1/1) ... [2023-08-29 17:34:46,073 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:34:45" (1/1) ... [2023-08-29 17:34:46,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:34:45" (1/1) ... [2023-08-29 17:34:46,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 17:34:46,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 17:34:46,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 17:34:46,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 17:34:46,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:34:45" (1/1) ... [2023-08-29 17:34:46,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 17:34:46,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:34:46,122 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 17:34:46,150 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 17:34:46,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 17:34:46,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 17:34:46,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 17:34:46,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 17:34:46,165 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 17:34:46,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 17:34:46,167 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 17:34:46,167 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 17:34:46,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 17:34:46,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 17:34:46,168 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 17:34:46,356 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 17:34:46,358 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 17:34:46,574 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 17:34:46,580 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 17:34:46,581 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-29 17:34:46,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:34:46 BoogieIcfgContainer [2023-08-29 17:34:46,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 17:34:46,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 17:34:46,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 17:34:46,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 17:34:46,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 05:34:45" (1/3) ... [2023-08-29 17:34:46,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b8a0fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 05:34:46, skipping insertion in model container [2023-08-29 17:34:46,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:34:45" (2/3) ... [2023-08-29 17:34:46,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b8a0fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 05:34:46, skipping insertion in model container [2023-08-29 17:34:46,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:34:46" (3/3) ... [2023-08-29 17:34:46,597 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2023-08-29 17:34:46,605 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 17:34:46,613 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 17:34:46,614 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-29 17:34:46,614 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 17:34:46,729 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 17:34:46,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 98 transitions, 201 flow [2023-08-29 17:34:46,836 INFO L130 PetriNetUnfolder]: 4/97 cut-off events. [2023-08-29 17:34:46,837 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:34:46,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 97 events. 4/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-08-29 17:34:46,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 98 transitions, 201 flow [2023-08-29 17:34:46,847 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 97 transitions, 197 flow [2023-08-29 17:34:46,853 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 17:34:46,871 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 97 transitions, 197 flow [2023-08-29 17:34:46,873 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 97 transitions, 197 flow [2023-08-29 17:34:46,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 97 transitions, 197 flow [2023-08-29 17:34:46,901 INFO L130 PetriNetUnfolder]: 4/97 cut-off events. [2023-08-29 17:34:46,902 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:34:46,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 97 events. 4/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-08-29 17:34:46,904 INFO L119 LiptonReduction]: Number of co-enabled transitions 2088 [2023-08-29 17:34:48,642 INFO L134 LiptonReduction]: Checked pairs total: 7607 [2023-08-29 17:34:48,643 INFO L136 LiptonReduction]: Total number of compositions: 68 [2023-08-29 17:34:48,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 17:34:48,661 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;@1ebb3a7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 17:34:48,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-29 17:34:48,666 INFO L130 PetriNetUnfolder]: 1/16 cut-off events. [2023-08-29 17:34:48,666 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:34:48,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:34:48,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:34:48,667 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:34:48,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:34:48,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1950365207, now seen corresponding path program 1 times [2023-08-29 17:34:48,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:34:48,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128636804] [2023-08-29 17:34:48,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:34:48,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:34:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:34:48,906 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 17:34:48,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:34:48,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128636804] [2023-08-29 17:34:48,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128636804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:34:48,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:34:48,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 17:34:48,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198227540] [2023-08-29 17:34:48,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:34:48,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 17:34:48,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:34:48,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 17:34:48,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 17:34:48,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 166 [2023-08-29 17:34:48,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:48,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:34:48,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 166 [2023-08-29 17:34:48,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:34:49,020 INFO L130 PetriNetUnfolder]: 31/148 cut-off events. [2023-08-29 17:34:49,021 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:34:49,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 148 events. 31/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 539 event pairs, 30 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 214. Up to 76 conditions per place. [2023-08-29 17:34:49,023 INFO L137 encePairwiseOnDemand]: 163/166 looper letters, 14 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-29 17:34:49,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 109 flow [2023-08-29 17:34:49,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 17:34:49,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 17:34:49,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-08-29 17:34:49,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763052208835341 [2023-08-29 17:34:49,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-08-29 17:34:49,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-08-29 17:34:49,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:34:49,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-08-29 17:34:49,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:49,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:49,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:49,055 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 75 flow. Second operand 3 states and 287 transitions. [2023-08-29 17:34:49,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 109 flow [2023-08-29 17:34:49,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 37 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 17:34:49,060 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 86 flow [2023-08-29 17:34:49,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-29 17:34:49,066 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-29 17:34:49,066 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 86 flow [2023-08-29 17:34:49,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:49,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:34:49,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:34:49,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 17:34:49,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:34:49,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:34:49,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1263490996, now seen corresponding path program 1 times [2023-08-29 17:34:49,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:34:49,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425039659] [2023-08-29 17:34:49,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:34:49,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:34:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:34:49,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:34:49,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:34:49,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425039659] [2023-08-29 17:34:49,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425039659] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:34:49,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94144185] [2023-08-29 17:34:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:34:49,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:34:49,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:34:49,229 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:34:49,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 17:34:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:34:49,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 17:34:49,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:34:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:34:49,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:34:49,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:34:49,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94144185] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:34:49,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:34:49,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 17:34:49,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681928070] [2023-08-29 17:34:49,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:34:49,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 17:34:49,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:34:49,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 17:34:49,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 17:34:49,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 166 [2023-08-29 17:34:49,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 90.57142857142857) internal successors, (634), 7 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:49,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:34:49,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 166 [2023-08-29 17:34:49,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:34:49,521 INFO L130 PetriNetUnfolder]: 31/151 cut-off events. [2023-08-29 17:34:49,522 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:34:49,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 151 events. 31/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 541 event pairs, 30 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 233. Up to 76 conditions per place. [2023-08-29 17:34:49,523 INFO L137 encePairwiseOnDemand]: 163/166 looper letters, 14 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-08-29 17:34:49,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 136 flow [2023-08-29 17:34:49,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:34:49,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:34:49,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 556 transitions. [2023-08-29 17:34:49,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5582329317269076 [2023-08-29 17:34:49,528 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 556 transitions. [2023-08-29 17:34:49,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 556 transitions. [2023-08-29 17:34:49,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:34:49,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 556 transitions. [2023-08-29 17:34:49,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:49,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:49,534 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:49,534 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 86 flow. Second operand 6 states and 556 transitions. [2023-08-29 17:34:49,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 136 flow [2023-08-29 17:34:49,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 132 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 17:34:49,536 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 118 flow [2023-08-29 17:34:49,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-08-29 17:34:49,537 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2023-08-29 17:34:49,537 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 118 flow [2023-08-29 17:34:49,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.57142857142857) internal successors, (634), 7 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:49,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:34:49,538 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:34:49,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 17:34:49,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:34:49,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:34:49,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:34:49,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1338651991, now seen corresponding path program 2 times [2023-08-29 17:34:49,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:34:49,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267259036] [2023-08-29 17:34:49,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:34:49,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:34:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:34:50,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-29 17:34:50,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:34:50,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267259036] [2023-08-29 17:34:50,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267259036] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:34:50,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:34:50,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 17:34:50,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897306362] [2023-08-29 17:34:50,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:34:50,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:34:50,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:34:50,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:34:50,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 17:34:50,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 166 [2023-08-29 17:34:50,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:50,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:34:50,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 166 [2023-08-29 17:34:50,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:34:50,541 INFO L130 PetriNetUnfolder]: 186/468 cut-off events. [2023-08-29 17:34:50,542 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 17:34:50,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 468 events. 186/468 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2284 event pairs, 86 based on Foata normal form. 0/449 useless extension candidates. Maximal degree in co-relation 880. Up to 247 conditions per place. [2023-08-29 17:34:50,546 INFO L137 encePairwiseOnDemand]: 155/166 looper letters, 62 selfloop transitions, 22 changer transitions 0/93 dead transitions. [2023-08-29 17:34:50,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 93 transitions, 392 flow [2023-08-29 17:34:50,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:34:50,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:34:50,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 537 transitions. [2023-08-29 17:34:50,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5391566265060241 [2023-08-29 17:34:50,548 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 537 transitions. [2023-08-29 17:34:50,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 537 transitions. [2023-08-29 17:34:50,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:34:50,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 537 transitions. [2023-08-29 17:34:50,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.5) internal successors, (537), 6 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:50,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:50,553 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:50,553 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 118 flow. Second operand 6 states and 537 transitions. [2023-08-29 17:34:50,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 93 transitions, 392 flow [2023-08-29 17:34:50,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 93 transitions, 378 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 17:34:50,556 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 250 flow [2023-08-29 17:34:50,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2023-08-29 17:34:50,557 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2023-08-29 17:34:50,557 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 250 flow [2023-08-29 17:34:50,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.83333333333333) internal successors, (467), 6 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:50,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:34:50,558 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:34:50,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 17:34:50,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:34:50,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:34:50,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2110106231, now seen corresponding path program 1 times [2023-08-29 17:34:50,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:34:50,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877969355] [2023-08-29 17:34:50,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:34:50,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:34:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:34:50,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-29 17:34:50,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:34:50,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877969355] [2023-08-29 17:34:50,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877969355] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:34:50,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:34:50,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 17:34:50,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841421409] [2023-08-29 17:34:50,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:34:50,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:34:50,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:34:50,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:34:50,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 17:34:50,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 166 [2023-08-29 17:34:50,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:50,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:34:50,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 166 [2023-08-29 17:34:50,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:34:51,172 INFO L130 PetriNetUnfolder]: 246/644 cut-off events. [2023-08-29 17:34:51,177 INFO L131 PetriNetUnfolder]: For 146/163 co-relation queries the response was YES. [2023-08-29 17:34:51,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1512 conditions, 644 events. 246/644 cut-off events. For 146/163 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3705 event pairs, 78 based on Foata normal form. 12/633 useless extension candidates. Maximal degree in co-relation 1481. Up to 346 conditions per place. [2023-08-29 17:34:51,182 INFO L137 encePairwiseOnDemand]: 155/166 looper letters, 81 selfloop transitions, 26 changer transitions 0/119 dead transitions. [2023-08-29 17:34:51,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 119 transitions, 606 flow [2023-08-29 17:34:51,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:34:51,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:34:51,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 547 transitions. [2023-08-29 17:34:51,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5491967871485943 [2023-08-29 17:34:51,186 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 547 transitions. [2023-08-29 17:34:51,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 547 transitions. [2023-08-29 17:34:51,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:34:51,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 547 transitions. [2023-08-29 17:34:51,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.16666666666667) internal successors, (547), 6 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:51,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:51,191 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:51,192 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 250 flow. Second operand 6 states and 547 transitions. [2023-08-29 17:34:51,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 119 transitions, 606 flow [2023-08-29 17:34:51,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 119 transitions, 606 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 17:34:51,197 INFO L231 Difference]: Finished difference. Result has 65 places, 84 transitions, 428 flow [2023-08-29 17:34:51,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=428, PETRI_PLACES=65, PETRI_TRANSITIONS=84} [2023-08-29 17:34:51,198 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2023-08-29 17:34:51,198 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 84 transitions, 428 flow [2023-08-29 17:34:51,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:51,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:34:51,199 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:34:51,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 17:34:51,199 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:34:51,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:34:51,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1793987561, now seen corresponding path program 1 times [2023-08-29 17:34:51,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:34:51,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7309848] [2023-08-29 17:34:51,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:34:51,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:34:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:34:51,277 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:34:51,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:34:51,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7309848] [2023-08-29 17:34:51,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7309848] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:34:51,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950246482] [2023-08-29 17:34:51,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:34:51,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:34:51,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:34:51,280 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:34:51,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 17:34:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:34:51,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 17:34:51,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:34:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:34:51,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:34:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:34:51,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950246482] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:34:51,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:34:51,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 17:34:51,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409563803] [2023-08-29 17:34:51,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:34:51,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 17:34:51,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:34:51,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 17:34:51,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 17:34:51,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 166 [2023-08-29 17:34:51,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 84 transitions, 428 flow. Second operand has 13 states, 13 states have (on average 90.46153846153847) internal successors, (1176), 13 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:51,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:34:51,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 166 [2023-08-29 17:34:51,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:34:51,597 INFO L130 PetriNetUnfolder]: 131/471 cut-off events. [2023-08-29 17:34:51,598 INFO L131 PetriNetUnfolder]: For 241/253 co-relation queries the response was YES. [2023-08-29 17:34:51,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1214 conditions, 471 events. 131/471 cut-off events. For 241/253 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2943 event pairs, 54 based on Foata normal form. 10/467 useless extension candidates. Maximal degree in co-relation 1154. Up to 218 conditions per place. [2023-08-29 17:34:51,601 INFO L137 encePairwiseOnDemand]: 163/166 looper letters, 30 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2023-08-29 17:34:51,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 90 transitions, 546 flow [2023-08-29 17:34:51,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 17:34:51,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 17:34:51,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1099 transitions. [2023-08-29 17:34:51,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517068273092369 [2023-08-29 17:34:51,605 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1099 transitions. [2023-08-29 17:34:51,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1099 transitions. [2023-08-29 17:34:51,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:34:51,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1099 transitions. [2023-08-29 17:34:51,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 91.58333333333333) internal successors, (1099), 12 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:51,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:51,611 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:51,612 INFO L175 Difference]: Start difference. First operand has 65 places, 84 transitions, 428 flow. Second operand 12 states and 1099 transitions. [2023-08-29 17:34:51,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 90 transitions, 546 flow [2023-08-29 17:34:51,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 90 transitions, 546 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 17:34:51,616 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 512 flow [2023-08-29 17:34:51,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=512, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2023-08-29 17:34:51,617 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 43 predicate places. [2023-08-29 17:34:51,618 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 512 flow [2023-08-29 17:34:51,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 90.46153846153847) internal successors, (1176), 13 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:51,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:34:51,618 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:34:51,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 17:34:51,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:34:51,828 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:34:51,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:34:51,829 INFO L85 PathProgramCache]: Analyzing trace with hash 46610167, now seen corresponding path program 2 times [2023-08-29 17:34:51,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:34:51,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797864430] [2023-08-29 17:34:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:34:51,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:34:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:34:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:34:52,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:34:52,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797864430] [2023-08-29 17:34:52,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797864430] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:34:52,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:34:52,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 17:34:52,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877159369] [2023-08-29 17:34:52,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:34:52,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:34:52,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:34:52,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:34:52,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 17:34:52,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-08-29 17:34:52,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 90 transitions, 512 flow. Second operand has 6 states, 6 states have (on average 72.66666666666667) internal successors, (436), 6 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:52,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:34:52,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-08-29 17:34:52,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:34:52,622 INFO L130 PetriNetUnfolder]: 449/1038 cut-off events. [2023-08-29 17:34:52,623 INFO L131 PetriNetUnfolder]: For 762/783 co-relation queries the response was YES. [2023-08-29 17:34:52,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3096 conditions, 1038 events. 449/1038 cut-off events. For 762/783 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5829 event pairs, 155 based on Foata normal form. 1/983 useless extension candidates. Maximal degree in co-relation 3011. Up to 700 conditions per place. [2023-08-29 17:34:52,629 INFO L137 encePairwiseOnDemand]: 152/166 looper letters, 115 selfloop transitions, 52 changer transitions 2/174 dead transitions. [2023-08-29 17:34:52,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 174 transitions, 1219 flow [2023-08-29 17:34:52,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:34:52,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:34:52,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 517 transitions. [2023-08-29 17:34:52,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190763052208835 [2023-08-29 17:34:52,632 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 517 transitions. [2023-08-29 17:34:52,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 517 transitions. [2023-08-29 17:34:52,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:34:52,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 517 transitions. [2023-08-29 17:34:52,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:52,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:52,635 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:52,635 INFO L175 Difference]: Start difference. First operand has 82 places, 90 transitions, 512 flow. Second operand 6 states and 517 transitions. [2023-08-29 17:34:52,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 174 transitions, 1219 flow [2023-08-29 17:34:52,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 174 transitions, 1171 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-29 17:34:52,643 INFO L231 Difference]: Finished difference. Result has 86 places, 135 transitions, 921 flow [2023-08-29 17:34:52,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=921, PETRI_PLACES=86, PETRI_TRANSITIONS=135} [2023-08-29 17:34:52,644 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 47 predicate places. [2023-08-29 17:34:52,644 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 135 transitions, 921 flow [2023-08-29 17:34:52,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.66666666666667) internal successors, (436), 6 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:52,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:34:52,644 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:34:52,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 17:34:52,645 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:34:52,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:34:52,645 INFO L85 PathProgramCache]: Analyzing trace with hash -835319141, now seen corresponding path program 1 times [2023-08-29 17:34:52,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:34:52,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959750195] [2023-08-29 17:34:52,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:34:52,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:34:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:34:52,918 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:34:52,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:34:52,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959750195] [2023-08-29 17:34:52,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959750195] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:34:52,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:34:52,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 17:34:52,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543817675] [2023-08-29 17:34:52,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:34:52,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:34:52,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:34:52,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:34:52,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 17:34:53,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 166 [2023-08-29 17:34:53,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 135 transitions, 921 flow. Second operand has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:53,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:34:53,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 166 [2023-08-29 17:34:53,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:34:53,337 INFO L130 PetriNetUnfolder]: 568/1316 cut-off events. [2023-08-29 17:34:53,337 INFO L131 PetriNetUnfolder]: For 2062/2091 co-relation queries the response was YES. [2023-08-29 17:34:53,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4639 conditions, 1316 events. 568/1316 cut-off events. For 2062/2091 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7947 event pairs, 136 based on Foata normal form. 4/1268 useless extension candidates. Maximal degree in co-relation 4574. Up to 818 conditions per place. [2023-08-29 17:34:53,346 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 140 selfloop transitions, 72 changer transitions 38/255 dead transitions. [2023-08-29 17:34:53,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 255 transitions, 2061 flow [2023-08-29 17:34:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:34:53,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:34:53,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 527 transitions. [2023-08-29 17:34:53,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291164658634538 [2023-08-29 17:34:53,348 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 527 transitions. [2023-08-29 17:34:53,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 527 transitions. [2023-08-29 17:34:53,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:34:53,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 527 transitions. [2023-08-29 17:34:53,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:53,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:53,352 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:53,352 INFO L175 Difference]: Start difference. First operand has 86 places, 135 transitions, 921 flow. Second operand 6 states and 527 transitions. [2023-08-29 17:34:53,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 255 transitions, 2061 flow [2023-08-29 17:34:53,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 255 transitions, 2009 flow, removed 26 selfloop flow, removed 0 redundant places. [2023-08-29 17:34:53,366 INFO L231 Difference]: Finished difference. Result has 95 places, 181 transitions, 1437 flow [2023-08-29 17:34:53,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1437, PETRI_PLACES=95, PETRI_TRANSITIONS=181} [2023-08-29 17:34:53,367 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 56 predicate places. [2023-08-29 17:34:53,368 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 181 transitions, 1437 flow [2023-08-29 17:34:53,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:34:53,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:34:53,368 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:34:53,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 17:34:53,369 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:34:53,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:34:53,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1071622368, now seen corresponding path program 1 times [2023-08-29 17:34:53,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:34:53,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597347623] [2023-08-29 17:34:53,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:34:53,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:34:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:34:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:34:57,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:34:57,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597347623] [2023-08-29 17:34:57,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597347623] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:34:57,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57901958] [2023-08-29 17:34:57,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:34:57,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:34:57,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:34:57,241 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:34:57,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 17:34:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:34:57,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-29 17:34:57,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:34:57,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-29 17:34:57,473 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-29 17:34:57,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-29 17:34:57,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 17:34:57,526 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-29 17:34:57,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2023-08-29 17:34:57,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 17:34:57,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 17:34:57,575 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:34:57,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 17:34:57,597 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:34:57,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 17:34:57,623 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:34:57,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 17:34:57,650 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:34:57,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 17:34:57,800 INFO L321 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2023-08-29 17:34:57,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 99 treesize of output 116 [2023-08-29 17:35:03,913 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 17:35:03,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:35:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:35:05,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57901958] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 17:35:05,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-29 17:35:05,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19, 16] total 29 [2023-08-29 17:35:05,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726044622] [2023-08-29 17:35:05,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:35:05,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 17:35:05,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:35:05,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 17:35:05,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=765, Unknown=2, NotChecked=0, Total=870 [2023-08-29 17:35:06,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-29 17:35:06,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 181 transitions, 1437 flow. Second operand has 13 states, 13 states have (on average 66.3076923076923) internal successors, (862), 13 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:35:06,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:35:06,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-29 17:35:06,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:35:13,039 INFO L130 PetriNetUnfolder]: 1089/2612 cut-off events. [2023-08-29 17:35:13,039 INFO L131 PetriNetUnfolder]: For 6542/6598 co-relation queries the response was YES. [2023-08-29 17:35:13,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10957 conditions, 2612 events. 1089/2612 cut-off events. For 6542/6598 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 19481 event pairs, 128 based on Foata normal form. 23/2635 useless extension candidates. Maximal degree in co-relation 10887. Up to 837 conditions per place. [2023-08-29 17:35:13,067 INFO L137 encePairwiseOnDemand]: 147/166 looper letters, 351 selfloop transitions, 113 changer transitions 104/577 dead transitions. [2023-08-29 17:35:13,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 577 transitions, 5493 flow [2023-08-29 17:35:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-29 17:35:13,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-29 17:35:13,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1305 transitions. [2023-08-29 17:35:13,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46243798724309 [2023-08-29 17:35:13,072 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1305 transitions. [2023-08-29 17:35:13,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1305 transitions. [2023-08-29 17:35:13,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:35:13,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1305 transitions. [2023-08-29 17:35:13,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 76.76470588235294) internal successors, (1305), 17 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:35:13,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:35:13,081 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:35:13,081 INFO L175 Difference]: Start difference. First operand has 95 places, 181 transitions, 1437 flow. Second operand 17 states and 1305 transitions. [2023-08-29 17:35:13,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 577 transitions, 5493 flow [2023-08-29 17:35:13,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 577 transitions, 5437 flow, removed 28 selfloop flow, removed 0 redundant places. [2023-08-29 17:35:13,118 INFO L231 Difference]: Finished difference. Result has 124 places, 276 transitions, 2726 flow [2023-08-29 17:35:13,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2726, PETRI_PLACES=124, PETRI_TRANSITIONS=276} [2023-08-29 17:35:13,120 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 85 predicate places. [2023-08-29 17:35:13,120 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 276 transitions, 2726 flow [2023-08-29 17:35:13,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 66.3076923076923) internal successors, (862), 13 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:35:13,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:35:13,121 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:35:13,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-29 17:35:13,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:35:13,322 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:35:13,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:35:13,322 INFO L85 PathProgramCache]: Analyzing trace with hash -192774232, now seen corresponding path program 2 times [2023-08-29 17:35:13,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:35:13,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724089047] [2023-08-29 17:35:13,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:35:13,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:35:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:35:44,867 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:35:44,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:35:44,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724089047] [2023-08-29 17:35:44,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724089047] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:35:44,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127347562] [2023-08-29 17:35:44,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 17:35:44,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:35:44,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:35:44,870 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:35:44,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 17:35:45,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 17:35:45,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:35:45,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-29 17:35:45,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:35:45,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-29 17:35:45,040 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-29 17:35:45,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-29 17:35:45,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 17:35:45,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 17:35:45,127 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:35:45,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 17:35:45,143 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:35:45,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 17:35:45,166 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:35:45,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 17:35:45,229 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 17:35:45,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2023-08-29 17:35:45,386 INFO L321 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2023-08-29 17:35:45,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 98 treesize of output 104 [2023-08-29 17:35:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:35:55,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:35:55,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127347562] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:35:55,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:35:55,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 25 [2023-08-29 17:35:55,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274269691] [2023-08-29 17:35:55,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:35:55,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-29 17:35:55,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:35:55,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-29 17:35:55,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=547, Unknown=4, NotChecked=0, Total=650 [2023-08-29 17:35:56,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 166 [2023-08-29 17:35:56,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 276 transitions, 2726 flow. Second operand has 11 states, 11 states have (on average 54.81818181818182) internal successors, (603), 11 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:35:56,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:35:56,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 166 [2023-08-29 17:35:56,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:35:58,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:36:00,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:36:02,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:36:06,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:36:08,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:36:12,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:36:13,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:36:18,676 INFO L130 PetriNetUnfolder]: 1593/3505 cut-off events. [2023-08-29 17:36:18,676 INFO L131 PetriNetUnfolder]: For 14189/14189 co-relation queries the response was YES. [2023-08-29 17:36:18,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17386 conditions, 3505 events. 1593/3505 cut-off events. For 14189/14189 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 25702 event pairs, 343 based on Foata normal form. 5/3510 useless extension candidates. Maximal degree in co-relation 17302. Up to 1394 conditions per place. [2023-08-29 17:36:18,719 INFO L137 encePairwiseOnDemand]: 150/166 looper letters, 469 selfloop transitions, 93 changer transitions 48/610 dead transitions. [2023-08-29 17:36:18,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 610 transitions, 6917 flow [2023-08-29 17:36:18,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 17:36:18,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 17:36:18,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 823 transitions. [2023-08-29 17:36:18,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41315261044176704 [2023-08-29 17:36:18,722 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 823 transitions. [2023-08-29 17:36:18,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 823 transitions. [2023-08-29 17:36:18,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:36:18,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 823 transitions. [2023-08-29 17:36:18,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 68.58333333333333) internal successors, (823), 12 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:18,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:18,728 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:18,728 INFO L175 Difference]: Start difference. First operand has 124 places, 276 transitions, 2726 flow. Second operand 12 states and 823 transitions. [2023-08-29 17:36:18,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 610 transitions, 6917 flow [2023-08-29 17:36:18,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 610 transitions, 6859 flow, removed 29 selfloop flow, removed 1 redundant places. [2023-08-29 17:36:18,823 INFO L231 Difference]: Finished difference. Result has 142 places, 333 transitions, 3783 flow [2023-08-29 17:36:18,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=2680, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3783, PETRI_PLACES=142, PETRI_TRANSITIONS=333} [2023-08-29 17:36:18,825 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 103 predicate places. [2023-08-29 17:36:18,825 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 333 transitions, 3783 flow [2023-08-29 17:36:18,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 54.81818181818182) internal successors, (603), 11 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:18,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:36:18,826 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:36:18,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 17:36:19,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:36:19,031 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:36:19,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:36:19,032 INFO L85 PathProgramCache]: Analyzing trace with hash -535616722, now seen corresponding path program 1 times [2023-08-29 17:36:19,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:36:19,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969447661] [2023-08-29 17:36:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:36:19,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:36:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:36:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:36:19,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:36:19,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969447661] [2023-08-29 17:36:19,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969447661] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:36:19,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:36:19,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:36:19,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329774529] [2023-08-29 17:36:19,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:36:19,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:36:19,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:36:19,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:36:19,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:36:19,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-08-29 17:36:19,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 333 transitions, 3783 flow. Second operand has 9 states, 9 states have (on average 71.66666666666667) internal successors, (645), 9 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:19,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:36:19,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-08-29 17:36:19,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:36:20,350 INFO L130 PetriNetUnfolder]: 1079/2682 cut-off events. [2023-08-29 17:36:20,351 INFO L131 PetriNetUnfolder]: For 15013/15086 co-relation queries the response was YES. [2023-08-29 17:36:20,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14623 conditions, 2682 events. 1079/2682 cut-off events. For 15013/15086 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 20927 event pairs, 207 based on Foata normal form. 59/2728 useless extension candidates. Maximal degree in co-relation 14530. Up to 837 conditions per place. [2023-08-29 17:36:20,382 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 350 selfloop transitions, 81 changer transitions 66/550 dead transitions. [2023-08-29 17:36:20,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 550 transitions, 6652 flow [2023-08-29 17:36:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 17:36:20,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 17:36:20,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 812 transitions. [2023-08-29 17:36:20,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891566265060241 [2023-08-29 17:36:20,387 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 812 transitions. [2023-08-29 17:36:20,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 812 transitions. [2023-08-29 17:36:20,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:36:20,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 812 transitions. [2023-08-29 17:36:20,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 81.2) internal successors, (812), 10 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:20,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:20,391 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:20,391 INFO L175 Difference]: Start difference. First operand has 142 places, 333 transitions, 3783 flow. Second operand 10 states and 812 transitions. [2023-08-29 17:36:20,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 550 transitions, 6652 flow [2023-08-29 17:36:20,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 550 transitions, 6578 flow, removed 29 selfloop flow, removed 1 redundant places. [2023-08-29 17:36:20,450 INFO L231 Difference]: Finished difference. Result has 158 places, 387 transitions, 4662 flow [2023-08-29 17:36:20,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=3714, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4662, PETRI_PLACES=158, PETRI_TRANSITIONS=387} [2023-08-29 17:36:20,451 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 119 predicate places. [2023-08-29 17:36:20,451 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 387 transitions, 4662 flow [2023-08-29 17:36:20,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.66666666666667) internal successors, (645), 9 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:20,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:36:20,452 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:36:20,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 17:36:20,452 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:36:20,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:36:20,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1859706642, now seen corresponding path program 3 times [2023-08-29 17:36:20,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:36:20,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317681408] [2023-08-29 17:36:20,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:36:20,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:36:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:36:20,987 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:36:20,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:36:20,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317681408] [2023-08-29 17:36:20,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317681408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:36:20,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:36:20,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:36:20,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188103593] [2023-08-29 17:36:20,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:36:20,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:36:20,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:36:20,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:36:20,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:36:21,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-08-29 17:36:21,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 387 transitions, 4662 flow. Second operand has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:21,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:36:21,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-08-29 17:36:21,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:36:22,015 INFO L130 PetriNetUnfolder]: 1070/2658 cut-off events. [2023-08-29 17:36:22,015 INFO L131 PetriNetUnfolder]: For 18667/18732 co-relation queries the response was YES. [2023-08-29 17:36:22,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15391 conditions, 2658 events. 1070/2658 cut-off events. For 18667/18732 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 20352 event pairs, 120 based on Foata normal form. 56/2706 useless extension candidates. Maximal degree in co-relation 15291. Up to 921 conditions per place. [2023-08-29 17:36:22,039 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 347 selfloop transitions, 104 changer transitions 85/582 dead transitions. [2023-08-29 17:36:22,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 582 transitions, 7559 flow [2023-08-29 17:36:22,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-29 17:36:22,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-29 17:36:22,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1178 transitions. [2023-08-29 17:36:22,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47309236947791167 [2023-08-29 17:36:22,043 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1178 transitions. [2023-08-29 17:36:22,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1178 transitions. [2023-08-29 17:36:22,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:36:22,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1178 transitions. [2023-08-29 17:36:22,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 78.53333333333333) internal successors, (1178), 15 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:22,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:22,050 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:22,051 INFO L175 Difference]: Start difference. First operand has 158 places, 387 transitions, 4662 flow. Second operand 15 states and 1178 transitions. [2023-08-29 17:36:22,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 582 transitions, 7559 flow [2023-08-29 17:36:22,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 582 transitions, 7475 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-29 17:36:22,138 INFO L231 Difference]: Finished difference. Result has 175 places, 386 transitions, 4867 flow [2023-08-29 17:36:22,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=4584, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4867, PETRI_PLACES=175, PETRI_TRANSITIONS=386} [2023-08-29 17:36:22,139 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 136 predicate places. [2023-08-29 17:36:22,139 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 386 transitions, 4867 flow [2023-08-29 17:36:22,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:22,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:36:22,140 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:36:22,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 17:36:22,140 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:36:22,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:36:22,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1227228932, now seen corresponding path program 4 times [2023-08-29 17:36:22,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:36:22,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414163035] [2023-08-29 17:36:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:36:22,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:36:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:36:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:36:49,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:36:49,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414163035] [2023-08-29 17:36:49,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414163035] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:36:49,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575148168] [2023-08-29 17:36:49,922 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 17:36:49,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:36:49,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:36:49,925 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:36:49,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 17:36:50,059 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 17:36:50,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:36:50,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-29 17:36:50,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:36:50,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-29 17:36:50,157 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-29 17:36:50,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-29 17:36:50,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 17:36:50,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 17:36:50,201 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:36:50,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 17:36:50,214 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:36:50,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 17:36:50,248 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-29 17:36:50,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 71 [2023-08-29 17:36:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-29 17:36:50,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:36:50,395 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:36:50,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575148168] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 17:36:50,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-29 17:36:50,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19, 12] total 26 [2023-08-29 17:36:50,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327896245] [2023-08-29 17:36:50,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:36:50,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:36:50,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:36:50,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:36:50,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2023-08-29 17:36:50,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-08-29 17:36:50,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 386 transitions, 4867 flow. Second operand has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:50,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:36:50,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-08-29 17:36:50,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:36:51,362 INFO L130 PetriNetUnfolder]: 1040/2581 cut-off events. [2023-08-29 17:36:51,363 INFO L131 PetriNetUnfolder]: For 20924/20996 co-relation queries the response was YES. [2023-08-29 17:36:51,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15328 conditions, 2581 events. 1040/2581 cut-off events. For 20924/20996 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 19633 event pairs, 122 based on Foata normal form. 52/2626 useless extension candidates. Maximal degree in co-relation 15223. Up to 741 conditions per place. [2023-08-29 17:36:51,389 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 326 selfloop transitions, 120 changer transitions 59/551 dead transitions. [2023-08-29 17:36:51,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 551 transitions, 7399 flow [2023-08-29 17:36:51,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 17:36:51,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 17:36:51,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 815 transitions. [2023-08-29 17:36:51,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49096385542168675 [2023-08-29 17:36:51,392 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 815 transitions. [2023-08-29 17:36:51,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 815 transitions. [2023-08-29 17:36:51,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:36:51,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 815 transitions. [2023-08-29 17:36:51,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 81.5) internal successors, (815), 10 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:51,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:51,398 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:51,398 INFO L175 Difference]: Start difference. First operand has 175 places, 386 transitions, 4867 flow. Second operand 10 states and 815 transitions. [2023-08-29 17:36:51,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 551 transitions, 7399 flow [2023-08-29 17:36:51,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 551 transitions, 7134 flow, removed 42 selfloop flow, removed 12 redundant places. [2023-08-29 17:36:51,625 INFO L231 Difference]: Finished difference. Result has 167 places, 392 transitions, 5059 flow [2023-08-29 17:36:51,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=4624, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5059, PETRI_PLACES=167, PETRI_TRANSITIONS=392} [2023-08-29 17:36:51,626 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 128 predicate places. [2023-08-29 17:36:51,626 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 392 transitions, 5059 flow [2023-08-29 17:36:51,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:51,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:36:51,626 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:36:51,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-29 17:36:51,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-29 17:36:51,833 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:36:51,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:36:51,834 INFO L85 PathProgramCache]: Analyzing trace with hash -536452000, now seen corresponding path program 5 times [2023-08-29 17:36:51,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:36:51,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366552714] [2023-08-29 17:36:51,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:36:51,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:36:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:36:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:36:55,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:36:55,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366552714] [2023-08-29 17:36:55,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366552714] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:36:55,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698802179] [2023-08-29 17:36:55,230 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 17:36:55,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:36:55,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:36:55,232 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:36:55,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 17:36:55,394 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-08-29 17:36:55,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:36:55,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 63 conjunts are in the unsatisfiable core [2023-08-29 17:36:55,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:36:55,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-29 17:36:55,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 17:36:55,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 17:36:55,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 17:36:55,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 17:36:55,708 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-29 17:36:55,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-29 17:36:55,760 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-29 17:36:55,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 71 [2023-08-29 17:36:55,785 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 17:36:55,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2023-08-29 17:36:55,860 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2023-08-29 17:36:55,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 76 treesize of output 87 [2023-08-29 17:36:55,892 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2023-08-29 17:36:55,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 76 treesize of output 87 [2023-08-29 17:36:56,030 INFO L321 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2023-08-29 17:36:56,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 99 treesize of output 116 [2023-08-29 17:37:10,152 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-29 17:37:10,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:37:12,966 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:37:12,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698802179] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 17:37:12,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-29 17:37:12,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19, 19] total 46 [2023-08-29 17:37:12,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381876269] [2023-08-29 17:37:12,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:37:12,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-29 17:37:12,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:37:12,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-29 17:37:12,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1960, Unknown=7, NotChecked=0, Total=2162 [2023-08-29 17:37:13,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2023-08-29 17:37:13,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 392 transitions, 5059 flow. Second operand has 11 states, 11 states have (on average 67.45454545454545) internal successors, (742), 11 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:13,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:37:13,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2023-08-29 17:37:13,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:37:18,464 INFO L130 PetriNetUnfolder]: 1139/2775 cut-off events. [2023-08-29 17:37:18,464 INFO L131 PetriNetUnfolder]: For 22648/22767 co-relation queries the response was YES. [2023-08-29 17:37:18,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16830 conditions, 2775 events. 1139/2775 cut-off events. For 22648/22767 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 21105 event pairs, 104 based on Foata normal form. 60/2830 useless extension candidates. Maximal degree in co-relation 16728. Up to 1330 conditions per place. [2023-08-29 17:37:18,485 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 303 selfloop transitions, 186 changer transitions 62/573 dead transitions. [2023-08-29 17:37:18,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 573 transitions, 8365 flow [2023-08-29 17:37:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 17:37:18,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 17:37:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 732 transitions. [2023-08-29 17:37:18,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4899598393574297 [2023-08-29 17:37:18,488 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 732 transitions. [2023-08-29 17:37:18,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 732 transitions. [2023-08-29 17:37:18,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:37:18,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 732 transitions. [2023-08-29 17:37:18,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 81.33333333333333) internal successors, (732), 9 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:18,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:18,492 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:18,492 INFO L175 Difference]: Start difference. First operand has 167 places, 392 transitions, 5059 flow. Second operand 9 states and 732 transitions. [2023-08-29 17:37:18,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 573 transitions, 8365 flow [2023-08-29 17:37:18,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 573 transitions, 8284 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-08-29 17:37:18,603 INFO L231 Difference]: Finished difference. Result has 175 places, 423 transitions, 6219 flow [2023-08-29 17:37:18,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=4996, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6219, PETRI_PLACES=175, PETRI_TRANSITIONS=423} [2023-08-29 17:37:18,605 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 136 predicate places. [2023-08-29 17:37:18,605 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 423 transitions, 6219 flow [2023-08-29 17:37:18,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 67.45454545454545) internal successors, (742), 11 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:18,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:37:18,605 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:37:18,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-29 17:37:18,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:37:18,816 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:37:18,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:37:18,816 INFO L85 PathProgramCache]: Analyzing trace with hash -590069129, now seen corresponding path program 1 times [2023-08-29 17:37:18,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:37:18,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785007769] [2023-08-29 17:37:18,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:37:18,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:37:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:37:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:37:19,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:37:19,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785007769] [2023-08-29 17:37:19,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785007769] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:37:19,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:37:19,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:37:19,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318873225] [2023-08-29 17:37:19,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:37:19,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:37:19,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:37:19,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:37:19,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:37:19,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-29 17:37:19,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 423 transitions, 6219 flow. Second operand has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:19,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:37:19,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-29 17:37:19,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:37:20,229 INFO L130 PetriNetUnfolder]: 1383/3292 cut-off events. [2023-08-29 17:37:20,230 INFO L131 PetriNetUnfolder]: For 29771/29814 co-relation queries the response was YES. [2023-08-29 17:37:20,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21010 conditions, 3292 events. 1383/3292 cut-off events. For 29771/29814 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 25292 event pairs, 311 based on Foata normal form. 37/3328 useless extension candidates. Maximal degree in co-relation 20904. Up to 1245 conditions per place. [2023-08-29 17:37:20,251 INFO L137 encePairwiseOnDemand]: 148/166 looper letters, 401 selfloop transitions, 150 changer transitions 129/685 dead transitions. [2023-08-29 17:37:20,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 685 transitions, 10390 flow [2023-08-29 17:37:20,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 17:37:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 17:37:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 788 transitions. [2023-08-29 17:37:20,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4746987951807229 [2023-08-29 17:37:20,253 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 788 transitions. [2023-08-29 17:37:20,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 788 transitions. [2023-08-29 17:37:20,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:37:20,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 788 transitions. [2023-08-29 17:37:20,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.8) internal successors, (788), 10 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:20,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:20,258 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 166.0) internal successors, (1826), 11 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:20,258 INFO L175 Difference]: Start difference. First operand has 175 places, 423 transitions, 6219 flow. Second operand 10 states and 788 transitions. [2023-08-29 17:37:20,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 685 transitions, 10390 flow [2023-08-29 17:37:20,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 685 transitions, 10241 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-08-29 17:37:20,360 INFO L231 Difference]: Finished difference. Result has 186 places, 454 transitions, 6916 flow [2023-08-29 17:37:20,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=6083, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6916, PETRI_PLACES=186, PETRI_TRANSITIONS=454} [2023-08-29 17:37:20,361 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 147 predicate places. [2023-08-29 17:37:20,361 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 454 transitions, 6916 flow [2023-08-29 17:37:20,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:20,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:37:20,361 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:37:20,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 17:37:20,361 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:37:20,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:37:20,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1989102976, now seen corresponding path program 6 times [2023-08-29 17:37:20,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:37:20,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260919209] [2023-08-29 17:37:20,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:37:20,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:37:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:37:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:37:20,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:37:20,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260919209] [2023-08-29 17:37:20,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260919209] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:37:20,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:37:20,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:37:20,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630988376] [2023-08-29 17:37:20,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:37:20,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:37:20,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:37:20,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:37:20,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:37:21,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-08-29 17:37:21,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 454 transitions, 6916 flow. Second operand has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:21,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:37:21,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-08-29 17:37:21,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:37:21,823 INFO L130 PetriNetUnfolder]: 1277/3190 cut-off events. [2023-08-29 17:37:21,823 INFO L131 PetriNetUnfolder]: For 35873/35974 co-relation queries the response was YES. [2023-08-29 17:37:21,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21420 conditions, 3190 events. 1277/3190 cut-off events. For 35873/35974 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 25534 event pairs, 176 based on Foata normal form. 47/3221 useless extension candidates. Maximal degree in co-relation 21311. Up to 1187 conditions per place. [2023-08-29 17:37:21,845 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 295 selfloop transitions, 214 changer transitions 56/614 dead transitions. [2023-08-29 17:37:21,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 614 transitions, 10227 flow [2023-08-29 17:37:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 17:37:21,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 17:37:21,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 736 transitions. [2023-08-29 17:37:21,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4926372155287818 [2023-08-29 17:37:21,846 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 736 transitions. [2023-08-29 17:37:21,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 736 transitions. [2023-08-29 17:37:21,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:37:21,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 736 transitions. [2023-08-29 17:37:21,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 81.77777777777777) internal successors, (736), 9 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:21,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:21,851 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:21,851 INFO L175 Difference]: Start difference. First operand has 186 places, 454 transitions, 6916 flow. Second operand 9 states and 736 transitions. [2023-08-29 17:37:21,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 614 transitions, 10227 flow [2023-08-29 17:37:21,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 614 transitions, 10205 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-29 17:37:21,983 INFO L231 Difference]: Finished difference. Result has 199 places, 496 transitions, 8684 flow [2023-08-29 17:37:21,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=6899, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8684, PETRI_PLACES=199, PETRI_TRANSITIONS=496} [2023-08-29 17:37:21,984 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 160 predicate places. [2023-08-29 17:37:21,984 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 496 transitions, 8684 flow [2023-08-29 17:37:21,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:21,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:37:21,984 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:37:21,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 17:37:21,985 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:37:21,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:37:21,985 INFO L85 PathProgramCache]: Analyzing trace with hash 222619341, now seen corresponding path program 2 times [2023-08-29 17:37:21,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:37:21,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599937777] [2023-08-29 17:37:21,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:37:21,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:37:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:37:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:37:22,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:37:22,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599937777] [2023-08-29 17:37:22,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599937777] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:37:22,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:37:22,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:37:22,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064477777] [2023-08-29 17:37:22,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:37:22,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:37:22,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:37:22,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:37:22,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:37:22,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-29 17:37:22,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 496 transitions, 8684 flow. Second operand has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:22,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:37:22,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-29 17:37:22,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:37:23,404 INFO L130 PetriNetUnfolder]: 1381/3303 cut-off events. [2023-08-29 17:37:23,404 INFO L131 PetriNetUnfolder]: For 45399/45437 co-relation queries the response was YES. [2023-08-29 17:37:23,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23744 conditions, 3303 events. 1381/3303 cut-off events. For 45399/45437 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 25510 event pairs, 308 based on Foata normal form. 61/3364 useless extension candidates. Maximal degree in co-relation 23628. Up to 1320 conditions per place. [2023-08-29 17:37:23,434 INFO L137 encePairwiseOnDemand]: 150/166 looper letters, 445 selfloop transitions, 155 changer transitions 87/692 dead transitions. [2023-08-29 17:37:23,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 692 transitions, 12132 flow [2023-08-29 17:37:23,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 17:37:23,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 17:37:23,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 720 transitions. [2023-08-29 17:37:23,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4819277108433735 [2023-08-29 17:37:23,436 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 720 transitions. [2023-08-29 17:37:23,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 720 transitions. [2023-08-29 17:37:23,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:37:23,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 720 transitions. [2023-08-29 17:37:23,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:23,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:23,440 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:23,440 INFO L175 Difference]: Start difference. First operand has 199 places, 496 transitions, 8684 flow. Second operand 9 states and 720 transitions. [2023-08-29 17:37:23,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 692 transitions, 12132 flow [2023-08-29 17:37:23,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 692 transitions, 12043 flow, removed 35 selfloop flow, removed 1 redundant places. [2023-08-29 17:37:23,633 INFO L231 Difference]: Finished difference. Result has 212 places, 510 transitions, 9229 flow [2023-08-29 17:37:23,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=8598, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9229, PETRI_PLACES=212, PETRI_TRANSITIONS=510} [2023-08-29 17:37:23,634 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 173 predicate places. [2023-08-29 17:37:23,634 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 510 transitions, 9229 flow [2023-08-29 17:37:23,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:23,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:37:23,635 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:37:23,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 17:37:23,635 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:37:23,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:37:23,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1937736894, now seen corresponding path program 2 times [2023-08-29 17:37:23,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:37:23,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567341619] [2023-08-29 17:37:23,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:37:23,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:37:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:37:25,852 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:37:25,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:37:25,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567341619] [2023-08-29 17:37:25,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567341619] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:37:25,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77285181] [2023-08-29 17:37:25,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 17:37:25,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:37:25,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:37:25,854 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:37:25,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-29 17:37:25,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 17:37:25,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:37:25,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-29 17:37:25,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:37:25,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-29 17:37:25,992 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-29 17:37:25,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-29 17:37:26,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 17:37:26,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 17:37:26,061 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:37:26,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 17:37:26,099 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 17:37:26,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 17:37:26,112 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:37:26,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 17:37:26,154 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 17:37:26,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2023-08-29 17:37:26,173 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 17:37:26,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2023-08-29 17:37:26,293 INFO L321 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2023-08-29 17:37:26,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 99 treesize of output 116 [2023-08-29 17:37:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:37:36,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:37:36,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77285181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:37:36,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:37:36,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 29 [2023-08-29 17:37:36,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358077413] [2023-08-29 17:37:36,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:37:36,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-29 17:37:36,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:37:36,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-29 17:37:36,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=736, Unknown=4, NotChecked=0, Total=870 [2023-08-29 17:37:38,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:37:40,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:37:42,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:37:44,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:37:46,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:37:48,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:37:50,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:37:52,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:37:54,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:37:54,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 166 [2023-08-29 17:37:54,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 510 transitions, 9229 flow. Second operand has 11 states, 11 states have (on average 61.54545454545455) internal successors, (677), 11 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:37:54,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:37:54,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 166 [2023-08-29 17:37:54,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:37:59,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:01,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:03,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:05,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:09,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:11,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:13,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:38:14,244 INFO L130 PetriNetUnfolder]: 1549/3595 cut-off events. [2023-08-29 17:38:14,244 INFO L131 PetriNetUnfolder]: For 58191/58263 co-relation queries the response was YES. [2023-08-29 17:38:14,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26846 conditions, 3595 events. 1549/3595 cut-off events. For 58191/58263 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 27653 event pairs, 294 based on Foata normal form. 72/3657 useless extension candidates. Maximal degree in co-relation 26724. Up to 1774 conditions per place. [2023-08-29 17:38:14,281 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 541 selfloop transitions, 98 changer transitions 77/762 dead transitions. [2023-08-29 17:38:14,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 762 transitions, 13878 flow [2023-08-29 17:38:14,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-29 17:38:14,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-29 17:38:14,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1062 transitions. [2023-08-29 17:38:14,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42650602409638555 [2023-08-29 17:38:14,283 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1062 transitions. [2023-08-29 17:38:14,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1062 transitions. [2023-08-29 17:38:14,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:38:14,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1062 transitions. [2023-08-29 17:38:14,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 70.8) internal successors, (1062), 15 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:14,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:14,289 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:14,289 INFO L175 Difference]: Start difference. First operand has 212 places, 510 transitions, 9229 flow. Second operand 15 states and 1062 transitions. [2023-08-29 17:38:14,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 762 transitions, 13878 flow [2023-08-29 17:38:14,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 762 transitions, 13805 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-08-29 17:38:14,565 INFO L231 Difference]: Finished difference. Result has 237 places, 566 transitions, 10412 flow [2023-08-29 17:38:14,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=9172, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10412, PETRI_PLACES=237, PETRI_TRANSITIONS=566} [2023-08-29 17:38:14,565 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 198 predicate places. [2023-08-29 17:38:14,565 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 566 transitions, 10412 flow [2023-08-29 17:38:14,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 61.54545454545455) internal successors, (677), 11 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:14,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:38:14,566 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:38:14,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-29 17:38:14,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:38:14,774 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:38:14,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:38:14,774 INFO L85 PathProgramCache]: Analyzing trace with hash 899559770, now seen corresponding path program 1 times [2023-08-29 17:38:14,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:38:14,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465029554] [2023-08-29 17:38:14,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:38:14,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:38:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:38:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:38:15,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:38:15,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465029554] [2023-08-29 17:38:15,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465029554] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:38:15,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:38:15,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:38:15,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554112859] [2023-08-29 17:38:15,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:38:15,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:38:15,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:38:15,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:38:15,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:38:15,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-29 17:38:15,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 566 transitions, 10412 flow. Second operand has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:15,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:38:15,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-29 17:38:15,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:38:16,260 INFO L130 PetriNetUnfolder]: 1413/3320 cut-off events. [2023-08-29 17:38:16,260 INFO L131 PetriNetUnfolder]: For 58630/58671 co-relation queries the response was YES. [2023-08-29 17:38:16,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25984 conditions, 3320 events. 1413/3320 cut-off events. For 58630/58671 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 25211 event pairs, 237 based on Foata normal form. 112/3430 useless extension candidates. Maximal degree in co-relation 25850. Up to 1237 conditions per place. [2023-08-29 17:38:16,293 INFO L137 encePairwiseOnDemand]: 156/166 looper letters, 321 selfloop transitions, 22 changer transitions 436/784 dead transitions. [2023-08-29 17:38:16,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 784 transitions, 15543 flow [2023-08-29 17:38:16,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 17:38:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 17:38:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 638 transitions. [2023-08-29 17:38:16,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48042168674698793 [2023-08-29 17:38:16,296 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 638 transitions. [2023-08-29 17:38:16,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 638 transitions. [2023-08-29 17:38:16,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:38:16,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 638 transitions. [2023-08-29 17:38:16,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.75) internal successors, (638), 8 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:16,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:16,299 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 166.0) internal successors, (1494), 9 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:16,299 INFO L175 Difference]: Start difference. First operand has 237 places, 566 transitions, 10412 flow. Second operand 8 states and 638 transitions. [2023-08-29 17:38:16,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 784 transitions, 15543 flow [2023-08-29 17:38:16,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 784 transitions, 15360 flow, removed 59 selfloop flow, removed 6 redundant places. [2023-08-29 17:38:16,587 INFO L231 Difference]: Finished difference. Result has 238 places, 315 transitions, 4830 flow [2023-08-29 17:38:16,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=10267, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4830, PETRI_PLACES=238, PETRI_TRANSITIONS=315} [2023-08-29 17:38:16,588 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 199 predicate places. [2023-08-29 17:38:16,588 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 315 transitions, 4830 flow [2023-08-29 17:38:16,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:16,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:38:16,588 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:38:16,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 17:38:16,588 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:38:16,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:38:16,589 INFO L85 PathProgramCache]: Analyzing trace with hash -518252954, now seen corresponding path program 7 times [2023-08-29 17:38:16,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:38:16,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385785687] [2023-08-29 17:38:16,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:38:16,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:38:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:38:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:38:17,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:38:17,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385785687] [2023-08-29 17:38:17,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385785687] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:38:17,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:38:17,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:38:17,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241668723] [2023-08-29 17:38:17,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:38:17,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:38:17,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:38:17,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:38:17,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:38:17,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-08-29 17:38:17,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 315 transitions, 4830 flow. Second operand has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:17,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:38:17,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-08-29 17:38:17,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:38:17,972 INFO L130 PetriNetUnfolder]: 584/1540 cut-off events. [2023-08-29 17:38:17,972 INFO L131 PetriNetUnfolder]: For 24744/24821 co-relation queries the response was YES. [2023-08-29 17:38:17,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11978 conditions, 1540 events. 584/1540 cut-off events. For 24744/24821 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10518 event pairs, 60 based on Foata normal form. 39/1569 useless extension candidates. Maximal degree in co-relation 11881. Up to 590 conditions per place. [2023-08-29 17:38:17,988 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 220 selfloop transitions, 89 changer transitions 50/417 dead transitions. [2023-08-29 17:38:17,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 417 transitions, 6852 flow [2023-08-29 17:38:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 17:38:17,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 17:38:17,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 725 transitions. [2023-08-29 17:38:17,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48527443105756357 [2023-08-29 17:38:17,990 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 725 transitions. [2023-08-29 17:38:17,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 725 transitions. [2023-08-29 17:38:17,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:38:17,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 725 transitions. [2023-08-29 17:38:17,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.55555555555556) internal successors, (725), 9 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:17,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:17,993 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:17,993 INFO L175 Difference]: Start difference. First operand has 238 places, 315 transitions, 4830 flow. Second operand 9 states and 725 transitions. [2023-08-29 17:38:17,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 417 transitions, 6852 flow [2023-08-29 17:38:18,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 417 transitions, 5941 flow, removed 166 selfloop flow, removed 38 redundant places. [2023-08-29 17:38:18,106 INFO L231 Difference]: Finished difference. Result has 189 places, 317 transitions, 4389 flow [2023-08-29 17:38:18,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=4103, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4389, PETRI_PLACES=189, PETRI_TRANSITIONS=317} [2023-08-29 17:38:18,107 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 150 predicate places. [2023-08-29 17:38:18,107 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 317 transitions, 4389 flow [2023-08-29 17:38:18,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:18,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:38:18,108 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:38:18,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-29 17:38:18,108 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:38:18,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:38:18,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1522099857, now seen corresponding path program 3 times [2023-08-29 17:38:18,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:38:18,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068901426] [2023-08-29 17:38:18,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:38:18,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:38:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:38:23,596 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:38:23,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:38:23,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068901426] [2023-08-29 17:38:23,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068901426] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:38:23,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161402807] [2023-08-29 17:38:23,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 17:38:23,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:38:23,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:38:23,598 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:38:23,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-29 17:38:23,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 17:38:23,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:38:23,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-29 17:38:23,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:38:23,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-29 17:38:23,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 17:38:23,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 17:38:23,798 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-29 17:38:23,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-29 17:38:23,812 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:38:23,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 17:38:23,823 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:38:23,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 17:38:23,848 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-29 17:38:23,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 71 [2023-08-29 17:38:23,856 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:38:23,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:38:23,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161402807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:38:23,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:38:23,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 23 [2023-08-29 17:38:23,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964960727] [2023-08-29 17:38:23,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:38:23,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:38:23,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:38:23,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:38:23,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2023-08-29 17:38:24,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-29 17:38:24,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 317 transitions, 4389 flow. Second operand has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:24,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:38:24,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-29 17:38:24,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:38:24,749 INFO L130 PetriNetUnfolder]: 673/1680 cut-off events. [2023-08-29 17:38:24,749 INFO L131 PetriNetUnfolder]: For 18016/18059 co-relation queries the response was YES. [2023-08-29 17:38:24,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11617 conditions, 1680 events. 673/1680 cut-off events. For 18016/18059 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11144 event pairs, 106 based on Foata normal form. 28/1708 useless extension candidates. Maximal degree in co-relation 11542. Up to 855 conditions per place. [2023-08-29 17:38:24,763 INFO L137 encePairwiseOnDemand]: 148/166 looper letters, 269 selfloop transitions, 97 changer transitions 72/443 dead transitions. [2023-08-29 17:38:24,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 443 transitions, 6610 flow [2023-08-29 17:38:24,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 17:38:24,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 17:38:24,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 721 transitions. [2023-08-29 17:38:24,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4825970548862115 [2023-08-29 17:38:24,764 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 721 transitions. [2023-08-29 17:38:24,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 721 transitions. [2023-08-29 17:38:24,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:38:24,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 721 transitions. [2023-08-29 17:38:24,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.11111111111111) internal successors, (721), 9 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:24,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:24,767 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:24,767 INFO L175 Difference]: Start difference. First operand has 189 places, 317 transitions, 4389 flow. Second operand 9 states and 721 transitions. [2023-08-29 17:38:24,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 443 transitions, 6610 flow [2023-08-29 17:38:24,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 443 transitions, 6343 flow, removed 27 selfloop flow, removed 11 redundant places. [2023-08-29 17:38:24,846 INFO L231 Difference]: Finished difference. Result has 187 places, 315 transitions, 4359 flow [2023-08-29 17:38:24,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=4154, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4359, PETRI_PLACES=187, PETRI_TRANSITIONS=315} [2023-08-29 17:38:24,847 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 148 predicate places. [2023-08-29 17:38:24,847 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 315 transitions, 4359 flow [2023-08-29 17:38:24,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:24,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:38:24,847 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:38:24,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-29 17:38:25,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:38:25,048 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:38:25,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:38:25,048 INFO L85 PathProgramCache]: Analyzing trace with hash -308912082, now seen corresponding path program 3 times [2023-08-29 17:38:25,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:38:25,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85461979] [2023-08-29 17:38:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:38:25,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:38:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:38:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:38:25,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:38:25,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85461979] [2023-08-29 17:38:25,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85461979] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:38:25,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:38:25,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:38:25,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110484930] [2023-08-29 17:38:25,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:38:25,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:38:25,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:38:25,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:38:25,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:38:25,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-08-29 17:38:25,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 315 transitions, 4359 flow. Second operand has 9 states, 9 states have (on average 71.66666666666667) internal successors, (645), 9 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:25,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:38:25,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-08-29 17:38:25,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:38:26,087 INFO L130 PetriNetUnfolder]: 583/1534 cut-off events. [2023-08-29 17:38:26,088 INFO L131 PetriNetUnfolder]: For 16305/16377 co-relation queries the response was YES. [2023-08-29 17:38:26,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10728 conditions, 1534 events. 583/1534 cut-off events. For 16305/16377 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10442 event pairs, 81 based on Foata normal form. 32/1555 useless extension candidates. Maximal degree in co-relation 10656. Up to 792 conditions per place. [2023-08-29 17:38:26,101 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 222 selfloop transitions, 140 changer transitions 26/425 dead transitions. [2023-08-29 17:38:26,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 425 transitions, 6589 flow [2023-08-29 17:38:26,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 17:38:26,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 17:38:26,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 734 transitions. [2023-08-29 17:38:26,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49129852744310576 [2023-08-29 17:38:26,103 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 734 transitions. [2023-08-29 17:38:26,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 734 transitions. [2023-08-29 17:38:26,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:38:26,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 734 transitions. [2023-08-29 17:38:26,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 81.55555555555556) internal successors, (734), 9 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:26,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:26,106 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:26,106 INFO L175 Difference]: Start difference. First operand has 187 places, 315 transitions, 4359 flow. Second operand 9 states and 734 transitions. [2023-08-29 17:38:26,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 425 transitions, 6589 flow [2023-08-29 17:38:26,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 425 transitions, 6468 flow, removed 28 selfloop flow, removed 6 redundant places. [2023-08-29 17:38:26,199 INFO L231 Difference]: Finished difference. Result has 191 places, 348 transitions, 5386 flow [2023-08-29 17:38:26,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=4285, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5386, PETRI_PLACES=191, PETRI_TRANSITIONS=348} [2023-08-29 17:38:26,200 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 152 predicate places. [2023-08-29 17:38:26,200 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 348 transitions, 5386 flow [2023-08-29 17:38:26,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.66666666666667) internal successors, (645), 9 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:26,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:38:26,200 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:38:26,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-29 17:38:26,200 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:38:26,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:38:26,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1946132512, now seen corresponding path program 8 times [2023-08-29 17:38:26,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:38:26,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311783098] [2023-08-29 17:38:26,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:38:26,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:38:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:38:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:38:26,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:38:26,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311783098] [2023-08-29 17:38:26,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311783098] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:38:26,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:38:26,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:38:26,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478046863] [2023-08-29 17:38:26,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:38:26,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:38:26,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:38:26,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:38:26,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:38:26,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-08-29 17:38:26,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 348 transitions, 5386 flow. Second operand has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:26,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:38:26,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-08-29 17:38:26,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:38:27,225 INFO L130 PetriNetUnfolder]: 581/1531 cut-off events. [2023-08-29 17:38:27,225 INFO L131 PetriNetUnfolder]: For 19497/19567 co-relation queries the response was YES. [2023-08-29 17:38:27,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10913 conditions, 1531 events. 581/1531 cut-off events. For 19497/19567 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10457 event pairs, 61 based on Foata normal form. 43/1565 useless extension candidates. Maximal degree in co-relation 10840. Up to 606 conditions per place. [2023-08-29 17:38:27,237 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 220 selfloop transitions, 83 changer transitions 64/422 dead transitions. [2023-08-29 17:38:27,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 422 transitions, 6884 flow [2023-08-29 17:38:27,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 17:38:27,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 17:38:27,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 720 transitions. [2023-08-29 17:38:27,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4819277108433735 [2023-08-29 17:38:27,242 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 720 transitions. [2023-08-29 17:38:27,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 720 transitions. [2023-08-29 17:38:27,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:38:27,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 720 transitions. [2023-08-29 17:38:27,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:27,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:27,245 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:27,245 INFO L175 Difference]: Start difference. First operand has 191 places, 348 transitions, 5386 flow. Second operand 9 states and 720 transitions. [2023-08-29 17:38:27,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 422 transitions, 6884 flow [2023-08-29 17:38:27,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 422 transitions, 6793 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-08-29 17:38:27,316 INFO L231 Difference]: Finished difference. Result has 195 places, 332 transitions, 5262 flow [2023-08-29 17:38:27,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=5307, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5262, PETRI_PLACES=195, PETRI_TRANSITIONS=332} [2023-08-29 17:38:27,317 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 156 predicate places. [2023-08-29 17:38:27,317 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 332 transitions, 5262 flow [2023-08-29 17:38:27,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.55555555555556) internal successors, (644), 9 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:27,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:38:27,317 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:38:27,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-29 17:38:27,318 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:38:27,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:38:27,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1932855858, now seen corresponding path program 4 times [2023-08-29 17:38:27,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:38:27,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568974126] [2023-08-29 17:38:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:38:27,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:38:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:38:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:38:27,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:38:27,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568974126] [2023-08-29 17:38:27,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568974126] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:38:27,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:38:27,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:38:27,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676015026] [2023-08-29 17:38:27,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:38:27,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:38:27,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:38:27,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:38:27,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:38:27,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 166 [2023-08-29 17:38:27,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 332 transitions, 5262 flow. Second operand has 9 states, 9 states have (on average 71.66666666666667) internal successors, (645), 9 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:27,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:38:27,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 166 [2023-08-29 17:38:27,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:38:28,349 INFO L130 PetriNetUnfolder]: 635/1657 cut-off events. [2023-08-29 17:38:28,349 INFO L131 PetriNetUnfolder]: For 22946/23012 co-relation queries the response was YES. [2023-08-29 17:38:28,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12145 conditions, 1657 events. 635/1657 cut-off events. For 22946/23012 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11487 event pairs, 72 based on Foata normal form. 38/1687 useless extension candidates. Maximal degree in co-relation 12073. Up to 714 conditions per place. [2023-08-29 17:38:28,363 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 271 selfloop transitions, 164 changer transitions 43/509 dead transitions. [2023-08-29 17:38:28,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 509 transitions, 8876 flow [2023-08-29 17:38:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 17:38:28,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 17:38:28,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1020 transitions. [2023-08-29 17:38:28,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726598702502317 [2023-08-29 17:38:28,364 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1020 transitions. [2023-08-29 17:38:28,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1020 transitions. [2023-08-29 17:38:28,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:38:28,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1020 transitions. [2023-08-29 17:38:28,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.46153846153847) internal successors, (1020), 13 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:28,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:28,367 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:28,367 INFO L175 Difference]: Start difference. First operand has 195 places, 332 transitions, 5262 flow. Second operand 13 states and 1020 transitions. [2023-08-29 17:38:28,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 509 transitions, 8876 flow [2023-08-29 17:38:28,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 509 transitions, 8342 flow, removed 12 selfloop flow, removed 13 redundant places. [2023-08-29 17:38:28,443 INFO L231 Difference]: Finished difference. Result has 199 places, 388 transitions, 6580 flow [2023-08-29 17:38:28,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=4894, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6580, PETRI_PLACES=199, PETRI_TRANSITIONS=388} [2023-08-29 17:38:28,444 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 160 predicate places. [2023-08-29 17:38:28,444 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 388 transitions, 6580 flow [2023-08-29 17:38:28,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.66666666666667) internal successors, (645), 9 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:28,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:38:28,444 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:38:28,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-29 17:38:28,444 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:38:28,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:38:28,445 INFO L85 PathProgramCache]: Analyzing trace with hash 339846000, now seen corresponding path program 2 times [2023-08-29 17:38:28,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:38:28,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530798582] [2023-08-29 17:38:28,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:38:28,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:38:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:38:28,683 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:38:28,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:38:28,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530798582] [2023-08-29 17:38:28,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530798582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:38:28,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:38:28,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:38:28,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836126203] [2023-08-29 17:38:28,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:38:28,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:38:28,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:38:28,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:38:28,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:38:28,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-29 17:38:28,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 388 transitions, 6580 flow. Second operand has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:28,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:38:28,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-29 17:38:28,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:38:29,529 INFO L130 PetriNetUnfolder]: 909/2162 cut-off events. [2023-08-29 17:38:29,529 INFO L131 PetriNetUnfolder]: For 28141/28158 co-relation queries the response was YES. [2023-08-29 17:38:29,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15689 conditions, 2162 events. 909/2162 cut-off events. For 28141/28158 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14836 event pairs, 161 based on Foata normal form. 33/2195 useless extension candidates. Maximal degree in co-relation 15613. Up to 1161 conditions per place. [2023-08-29 17:38:29,548 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 341 selfloop transitions, 171 changer transitions 67/583 dead transitions. [2023-08-29 17:38:29,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 583 transitions, 10121 flow [2023-08-29 17:38:29,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 17:38:29,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 17:38:29,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 915 transitions. [2023-08-29 17:38:29,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45933734939759036 [2023-08-29 17:38:29,550 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 915 transitions. [2023-08-29 17:38:29,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 915 transitions. [2023-08-29 17:38:29,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:38:29,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 915 transitions. [2023-08-29 17:38:29,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 76.25) internal successors, (915), 12 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:29,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:29,552 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 166.0) internal successors, (2158), 13 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:29,552 INFO L175 Difference]: Start difference. First operand has 199 places, 388 transitions, 6580 flow. Second operand 12 states and 915 transitions. [2023-08-29 17:38:29,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 583 transitions, 10121 flow [2023-08-29 17:38:29,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 583 transitions, 10040 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-08-29 17:38:29,662 INFO L231 Difference]: Finished difference. Result has 212 places, 420 transitions, 7520 flow [2023-08-29 17:38:29,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=6518, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7520, PETRI_PLACES=212, PETRI_TRANSITIONS=420} [2023-08-29 17:38:29,663 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 173 predicate places. [2023-08-29 17:38:29,663 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 420 transitions, 7520 flow [2023-08-29 17:38:29,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:29,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:38:29,664 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:38:29,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-29 17:38:29,664 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:38:29,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:38:29,664 INFO L85 PathProgramCache]: Analyzing trace with hash 49694097, now seen corresponding path program 4 times [2023-08-29 17:38:29,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:38:29,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344085994] [2023-08-29 17:38:29,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:38:29,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:38:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:38:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:38:29,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:38:29,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344085994] [2023-08-29 17:38:29,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344085994] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:38:29,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:38:29,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:38:29,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924176381] [2023-08-29 17:38:29,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:38:29,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:38:29,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:38:29,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:38:29,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:38:30,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-29 17:38:30,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 420 transitions, 7520 flow. Second operand has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:30,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:38:30,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-29 17:38:30,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:38:30,784 INFO L130 PetriNetUnfolder]: 862/2106 cut-off events. [2023-08-29 17:38:30,784 INFO L131 PetriNetUnfolder]: For 34059/34093 co-relation queries the response was YES. [2023-08-29 17:38:30,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16319 conditions, 2106 events. 862/2106 cut-off events. For 34059/34093 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 14706 event pairs, 154 based on Foata normal form. 18/2122 useless extension candidates. Maximal degree in co-relation 16237. Up to 823 conditions per place. [2023-08-29 17:38:30,803 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 440 selfloop transitions, 109 changer transitions 51/604 dead transitions. [2023-08-29 17:38:30,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 604 transitions, 11629 flow [2023-08-29 17:38:30,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 17:38:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 17:38:30,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 699 transitions. [2023-08-29 17:38:30,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678714859437751 [2023-08-29 17:38:30,805 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 699 transitions. [2023-08-29 17:38:30,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 699 transitions. [2023-08-29 17:38:30,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:38:30,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 699 transitions. [2023-08-29 17:38:30,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.66666666666667) internal successors, (699), 9 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:30,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:30,807 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:30,807 INFO L175 Difference]: Start difference. First operand has 212 places, 420 transitions, 7520 flow. Second operand 9 states and 699 transitions. [2023-08-29 17:38:30,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 604 transitions, 11629 flow [2023-08-29 17:38:30,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 604 transitions, 11555 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-08-29 17:38:30,950 INFO L231 Difference]: Finished difference. Result has 218 places, 430 transitions, 8015 flow [2023-08-29 17:38:30,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=7488, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8015, PETRI_PLACES=218, PETRI_TRANSITIONS=430} [2023-08-29 17:38:30,950 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 179 predicate places. [2023-08-29 17:38:30,950 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 430 transitions, 8015 flow [2023-08-29 17:38:30,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:30,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:38:30,951 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:38:30,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-29 17:38:30,951 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:38:30,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:38:30,952 INFO L85 PathProgramCache]: Analyzing trace with hash 561536892, now seen corresponding path program 3 times [2023-08-29 17:38:30,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:38:30,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136341571] [2023-08-29 17:38:30,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:38:30,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:38:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:38:31,202 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:38:31,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:38:31,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136341571] [2023-08-29 17:38:31,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136341571] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:38:31,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:38:31,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:38:31,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624778428] [2023-08-29 17:38:31,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:38:31,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:38:31,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:38:31,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:38:31,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:38:31,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-29 17:38:31,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 430 transitions, 8015 flow. Second operand has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:31,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:38:31,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-29 17:38:31,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:38:32,155 INFO L130 PetriNetUnfolder]: 813/1984 cut-off events. [2023-08-29 17:38:32,155 INFO L131 PetriNetUnfolder]: For 35205/35216 co-relation queries the response was YES. [2023-08-29 17:38:32,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16204 conditions, 1984 events. 813/1984 cut-off events. For 35205/35216 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13605 event pairs, 112 based on Foata normal form. 71/2055 useless extension candidates. Maximal degree in co-relation 16120. Up to 1139 conditions per place. [2023-08-29 17:38:32,173 INFO L137 encePairwiseOnDemand]: 156/166 looper letters, 337 selfloop transitions, 156 changer transitions 100/597 dead transitions. [2023-08-29 17:38:32,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 597 transitions, 11690 flow [2023-08-29 17:38:32,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 17:38:32,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 17:38:32,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 967 transitions. [2023-08-29 17:38:32,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44810009267840595 [2023-08-29 17:38:32,175 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 967 transitions. [2023-08-29 17:38:32,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 967 transitions. [2023-08-29 17:38:32,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:38:32,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 967 transitions. [2023-08-29 17:38:32,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.38461538461539) internal successors, (967), 13 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:32,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:32,178 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:32,178 INFO L175 Difference]: Start difference. First operand has 218 places, 430 transitions, 8015 flow. Second operand 13 states and 967 transitions. [2023-08-29 17:38:32,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 597 transitions, 11690 flow [2023-08-29 17:38:32,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 597 transitions, 11551 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-29 17:38:32,321 INFO L231 Difference]: Finished difference. Result has 233 places, 417 transitions, 8144 flow [2023-08-29 17:38:32,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=7931, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8144, PETRI_PLACES=233, PETRI_TRANSITIONS=417} [2023-08-29 17:38:32,322 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 194 predicate places. [2023-08-29 17:38:32,322 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 417 transitions, 8144 flow [2023-08-29 17:38:32,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:32,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:38:32,323 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:38:32,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-29 17:38:32,323 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:38:32,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:38:32,324 INFO L85 PathProgramCache]: Analyzing trace with hash 94813047, now seen corresponding path program 5 times [2023-08-29 17:38:32,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:38:32,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125803819] [2023-08-29 17:38:32,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:38:32,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:38:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:38:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:38:32,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:38:32,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125803819] [2023-08-29 17:38:32,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125803819] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:38:32,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:38:32,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:38:32,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983336413] [2023-08-29 17:38:32,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:38:32,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:38:32,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:38:32,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:38:32,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:38:32,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-29 17:38:32,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 417 transitions, 8144 flow. Second operand has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:32,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:38:32,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-29 17:38:32,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:38:33,541 INFO L130 PetriNetUnfolder]: 740/1837 cut-off events. [2023-08-29 17:38:33,541 INFO L131 PetriNetUnfolder]: For 38657/38669 co-relation queries the response was YES. [2023-08-29 17:38:33,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15602 conditions, 1837 events. 740/1837 cut-off events. For 38657/38669 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12572 event pairs, 140 based on Foata normal form. 16/1851 useless extension candidates. Maximal degree in co-relation 15511. Up to 778 conditions per place. [2023-08-29 17:38:33,559 INFO L137 encePairwiseOnDemand]: 152/166 looper letters, 388 selfloop transitions, 76 changer transitions 65/533 dead transitions. [2023-08-29 17:38:33,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 533 transitions, 11064 flow [2023-08-29 17:38:33,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 17:38:33,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 17:38:33,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 696 transitions. [2023-08-29 17:38:33,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46586345381526106 [2023-08-29 17:38:33,561 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 696 transitions. [2023-08-29 17:38:33,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 696 transitions. [2023-08-29 17:38:33,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:38:33,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 696 transitions. [2023-08-29 17:38:33,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.33333333333333) internal successors, (696), 9 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:33,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:33,564 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:33,564 INFO L175 Difference]: Start difference. First operand has 233 places, 417 transitions, 8144 flow. Second operand 9 states and 696 transitions. [2023-08-29 17:38:33,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 533 transitions, 11064 flow [2023-08-29 17:38:33,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 533 transitions, 10858 flow, removed 94 selfloop flow, removed 7 redundant places. [2023-08-29 17:38:33,793 INFO L231 Difference]: Finished difference. Result has 232 places, 392 transitions, 7845 flow [2023-08-29 17:38:33,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=8020, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7845, PETRI_PLACES=232, PETRI_TRANSITIONS=392} [2023-08-29 17:38:33,794 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 193 predicate places. [2023-08-29 17:38:33,795 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 392 transitions, 7845 flow [2023-08-29 17:38:33,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:33,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:38:33,795 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:38:33,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-29 17:38:33,795 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:38:33,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:38:33,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1905701743, now seen corresponding path program 6 times [2023-08-29 17:38:33,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:38:33,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569803969] [2023-08-29 17:38:33,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:38:33,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:38:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:38:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:38:35,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:38:35,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569803969] [2023-08-29 17:38:35,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569803969] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:38:35,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068880326] [2023-08-29 17:38:35,464 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 17:38:35,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:38:35,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:38:35,466 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:38:35,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-29 17:38:35,614 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-29 17:38:35,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:38:35,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-29 17:38:35,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:38:35,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-29 17:38:35,653 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-29 17:38:35,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-29 17:38:35,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 17:38:35,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 17:38:35,741 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:38:35,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 17:38:35,755 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:38:35,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 17:38:35,775 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-29 17:38:35,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 63 treesize of output 71 [2023-08-29 17:38:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:38:35,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:38:35,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068880326] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:38:35,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:38:35,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 20 [2023-08-29 17:38:35,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223469923] [2023-08-29 17:38:35,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:38:35,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:38:35,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:38:35,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:38:35,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2023-08-29 17:38:36,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-29 17:38:36,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 392 transitions, 7845 flow. Second operand has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:36,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:38:36,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-29 17:38:36,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:38:36,637 INFO L130 PetriNetUnfolder]: 658/1633 cut-off events. [2023-08-29 17:38:36,637 INFO L131 PetriNetUnfolder]: For 35893/35905 co-relation queries the response was YES. [2023-08-29 17:38:36,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14368 conditions, 1633 events. 658/1633 cut-off events. For 35893/35905 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10903 event pairs, 96 based on Foata normal form. 78/1710 useless extension candidates. Maximal degree in co-relation 14280. Up to 760 conditions per place. [2023-08-29 17:38:36,650 INFO L137 encePairwiseOnDemand]: 157/166 looper letters, 82 selfloop transitions, 19 changer transitions 423/528 dead transitions. [2023-08-29 17:38:36,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 528 transitions, 11215 flow [2023-08-29 17:38:36,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 17:38:36,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 17:38:36,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 941 transitions. [2023-08-29 17:38:36,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43605189990732157 [2023-08-29 17:38:36,652 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 941 transitions. [2023-08-29 17:38:36,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 941 transitions. [2023-08-29 17:38:36,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:38:36,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 941 transitions. [2023-08-29 17:38:36,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.38461538461539) internal successors, (941), 13 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:36,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:36,656 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:36,656 INFO L175 Difference]: Start difference. First operand has 232 places, 392 transitions, 7845 flow. Second operand 13 states and 941 transitions. [2023-08-29 17:38:36,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 528 transitions, 11215 flow [2023-08-29 17:38:36,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 528 transitions, 10441 flow, removed 38 selfloop flow, removed 31 redundant places. [2023-08-29 17:38:36,807 INFO L231 Difference]: Finished difference. Result has 195 places, 87 transitions, 1136 flow [2023-08-29 17:38:36,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=7161, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1136, PETRI_PLACES=195, PETRI_TRANSITIONS=87} [2023-08-29 17:38:36,808 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 156 predicate places. [2023-08-29 17:38:36,808 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 87 transitions, 1136 flow [2023-08-29 17:38:36,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:36,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:38:36,808 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:38:36,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-29 17:38:37,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-29 17:38:37,014 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:38:37,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:38:37,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2052644462, now seen corresponding path program 5 times [2023-08-29 17:38:37,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:38:37,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178248488] [2023-08-29 17:38:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:38:37,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:38:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:38:39,235 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:38:39,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:38:39,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178248488] [2023-08-29 17:38:39,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178248488] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:38:39,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534798140] [2023-08-29 17:38:39,235 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 17:38:39,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:38:39,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:38:39,236 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:38:39,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-29 17:38:39,396 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-08-29 17:38:39,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:38:39,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 63 conjunts are in the unsatisfiable core [2023-08-29 17:38:39,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:38:39,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-29 17:38:39,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 17:38:39,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 17:38:39,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 17:38:39,696 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-29 17:38:39,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-29 17:38:39,756 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-29 17:38:39,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 56 [2023-08-29 17:38:39,778 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 17:38:39,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 17:38:39,801 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 17:38:39,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 17:38:39,815 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:38:39,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 17:38:39,916 INFO L321 Elim1Store]: treesize reduction 38, result has 24.0 percent of original size [2023-08-29 17:38:39,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 88 treesize of output 102 [2023-08-29 17:38:40,002 INFO L321 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2023-08-29 17:38:40,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 99 treesize of output 116 [2023-08-29 17:38:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 17:38:46,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:38:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:38:48,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534798140] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 17:38:48,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-29 17:38:48,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19, 19] total 46 [2023-08-29 17:38:48,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713231918] [2023-08-29 17:38:48,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:38:48,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-29 17:38:48,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:38:48,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-29 17:38:48,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1965, Unknown=3, NotChecked=0, Total=2162 [2023-08-29 17:38:49,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 166 [2023-08-29 17:38:49,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 87 transitions, 1136 flow. Second operand has 11 states, 11 states have (on average 67.54545454545455) internal successors, (743), 11 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:49,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:38:49,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 166 [2023-08-29 17:38:49,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:38:51,934 INFO L130 PetriNetUnfolder]: 84/284 cut-off events. [2023-08-29 17:38:51,934 INFO L131 PetriNetUnfolder]: For 3663/3663 co-relation queries the response was YES. [2023-08-29 17:38:51,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2198 conditions, 284 events. 84/284 cut-off events. For 3663/3663 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1110 event pairs, 15 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 2129. Up to 135 conditions per place. [2023-08-29 17:38:51,937 INFO L137 encePairwiseOnDemand]: 155/166 looper letters, 73 selfloop transitions, 17 changer transitions 35/135 dead transitions. [2023-08-29 17:38:51,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 135 transitions, 2002 flow [2023-08-29 17:38:51,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-29 17:38:51,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-29 17:38:51,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 801 transitions. [2023-08-29 17:38:51,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43866374589266155 [2023-08-29 17:38:51,940 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 801 transitions. [2023-08-29 17:38:51,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 801 transitions. [2023-08-29 17:38:51,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:38:51,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 801 transitions. [2023-08-29 17:38:51,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 72.81818181818181) internal successors, (801), 11 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:51,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 166.0) internal successors, (1992), 12 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:51,943 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 166.0) internal successors, (1992), 12 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:51,943 INFO L175 Difference]: Start difference. First operand has 195 places, 87 transitions, 1136 flow. Second operand 11 states and 801 transitions. [2023-08-29 17:38:51,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 135 transitions, 2002 flow [2023-08-29 17:38:51,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 135 transitions, 1279 flow, removed 139 selfloop flow, removed 64 redundant places. [2023-08-29 17:38:51,958 INFO L231 Difference]: Finished difference. Result has 123 places, 87 transitions, 708 flow [2023-08-29 17:38:51,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=708, PETRI_PLACES=123, PETRI_TRANSITIONS=87} [2023-08-29 17:38:51,959 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 84 predicate places. [2023-08-29 17:38:51,959 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 87 transitions, 708 flow [2023-08-29 17:38:51,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 67.54545454545455) internal successors, (743), 11 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:51,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:38:51,960 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:38:51,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-29 17:38:52,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-29 17:38:52,166 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:38:52,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:38:52,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1603601968, now seen corresponding path program 6 times [2023-08-29 17:38:52,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:38:52,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168252393] [2023-08-29 17:38:52,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:38:52,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:38:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:38:54,144 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:38:54,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:38:54,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168252393] [2023-08-29 17:38:54,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168252393] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:38:54,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190323314] [2023-08-29 17:38:54,144 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 17:38:54,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:38:54,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:38:54,146 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:38:54,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-29 17:38:54,287 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-29 17:38:54,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:38:54,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-29 17:38:54,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:38:54,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-29 17:38:54,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 17:38:54,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 17:38:54,378 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-29 17:38:54,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-29 17:38:54,386 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:38:54,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 17:38:54,412 INFO L321 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2023-08-29 17:38:54,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 56 [2023-08-29 17:38:54,432 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 17:38:54,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 17:38:54,450 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:38:54,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 17:38:54,474 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 17:38:54,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2023-08-29 17:38:54,497 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 17:38:54,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 64 treesize of output 72 [2023-08-29 17:38:54,637 INFO L321 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2023-08-29 17:38:54,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 99 treesize of output 116 [2023-08-29 17:39:02,753 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:39:02,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:39:02,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190323314] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:39:02,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:39:02,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 25 [2023-08-29 17:39:02,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868471566] [2023-08-29 17:39:02,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:39:02,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-29 17:39:02,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:39:02,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-29 17:39:02,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=574, Unknown=3, NotChecked=0, Total=650 [2023-08-29 17:39:04,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:06,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:08,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:10,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:12,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:14,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:16,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:19,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:21,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:23,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:23,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 166 [2023-08-29 17:39:23,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 87 transitions, 708 flow. Second operand has 11 states, 11 states have (on average 61.54545454545455) internal successors, (677), 11 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:23,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:39:23,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 166 [2023-08-29 17:39:23,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:39:25,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:29,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:33,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:33,718 INFO L130 PetriNetUnfolder]: 80/254 cut-off events. [2023-08-29 17:39:33,719 INFO L131 PetriNetUnfolder]: For 1015/1017 co-relation queries the response was YES. [2023-08-29 17:39:33,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1321 conditions, 254 events. 80/254 cut-off events. For 1015/1017 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 888 event pairs, 19 based on Foata normal form. 14/266 useless extension candidates. Maximal degree in co-relation 1278. Up to 123 conditions per place. [2023-08-29 17:39:33,720 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 55 selfloop transitions, 7 changer transitions 70/138 dead transitions. [2023-08-29 17:39:33,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 138 transitions, 1389 flow [2023-08-29 17:39:33,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 17:39:33,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 17:39:33,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 860 transitions. [2023-08-29 17:39:33,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3985171455050973 [2023-08-29 17:39:33,721 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 860 transitions. [2023-08-29 17:39:33,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 860 transitions. [2023-08-29 17:39:33,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:39:33,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 860 transitions. [2023-08-29 17:39:33,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 66.15384615384616) internal successors, (860), 13 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:33,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:33,724 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:33,724 INFO L175 Difference]: Start difference. First operand has 123 places, 87 transitions, 708 flow. Second operand 13 states and 860 transitions. [2023-08-29 17:39:33,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 138 transitions, 1389 flow [2023-08-29 17:39:33,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 138 transitions, 1283 flow, removed 32 selfloop flow, removed 10 redundant places. [2023-08-29 17:39:33,728 INFO L231 Difference]: Finished difference. Result has 125 places, 65 transitions, 483 flow [2023-08-29 17:39:33,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=483, PETRI_PLACES=125, PETRI_TRANSITIONS=65} [2023-08-29 17:39:33,729 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 86 predicate places. [2023-08-29 17:39:33,729 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 65 transitions, 483 flow [2023-08-29 17:39:33,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 61.54545454545455) internal successors, (677), 11 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:33,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:39:33,730 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:39:33,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-29 17:39:33,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:39:33,935 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:39:33,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:39:33,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2079110374, now seen corresponding path program 4 times [2023-08-29 17:39:33,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:39:33,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362557076] [2023-08-29 17:39:33,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:39:33,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:39:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:39:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:39:34,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:39:34,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362557076] [2023-08-29 17:39:34,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362557076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:39:34,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:39:34,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:39:34,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178205952] [2023-08-29 17:39:34,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:39:34,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:39:34,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:39:34,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:39:34,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:39:34,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-29 17:39:34,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 65 transitions, 483 flow. Second operand has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:34,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:39:34,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-29 17:39:34,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:39:34,554 INFO L130 PetriNetUnfolder]: 61/197 cut-off events. [2023-08-29 17:39:34,554 INFO L131 PetriNetUnfolder]: For 589/589 co-relation queries the response was YES. [2023-08-29 17:39:34,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 197 events. 61/197 cut-off events. For 589/589 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 625 event pairs, 12 based on Foata normal form. 24/221 useless extension candidates. Maximal degree in co-relation 988. Up to 82 conditions per place. [2023-08-29 17:39:34,555 INFO L137 encePairwiseOnDemand]: 158/166 looper letters, 46 selfloop transitions, 6 changer transitions 58/112 dead transitions. [2023-08-29 17:39:34,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 112 transitions, 1100 flow [2023-08-29 17:39:34,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-29 17:39:34,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-29 17:39:34,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 778 transitions. [2023-08-29 17:39:34,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42606790799561883 [2023-08-29 17:39:34,556 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 778 transitions. [2023-08-29 17:39:34,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 778 transitions. [2023-08-29 17:39:34,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:39:34,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 778 transitions. [2023-08-29 17:39:34,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 70.72727272727273) internal successors, (778), 11 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:34,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 166.0) internal successors, (1992), 12 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:34,559 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 166.0) internal successors, (1992), 12 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:34,559 INFO L175 Difference]: Start difference. First operand has 125 places, 65 transitions, 483 flow. Second operand 11 states and 778 transitions. [2023-08-29 17:39:34,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 112 transitions, 1100 flow [2023-08-29 17:39:34,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 112 transitions, 952 flow, removed 36 selfloop flow, removed 24 redundant places. [2023-08-29 17:39:34,562 INFO L231 Difference]: Finished difference. Result has 106 places, 51 transitions, 317 flow [2023-08-29 17:39:34,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=317, PETRI_PLACES=106, PETRI_TRANSITIONS=51} [2023-08-29 17:39:34,562 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 67 predicate places. [2023-08-29 17:39:34,562 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 51 transitions, 317 flow [2023-08-29 17:39:34,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:34,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:39:34,563 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:39:34,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-29 17:39:34,563 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:39:34,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:39:34,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1293712730, now seen corresponding path program 5 times [2023-08-29 17:39:34,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:39:34,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838644934] [2023-08-29 17:39:34,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:39:34,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:39:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:39:34,852 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:39:34,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:39:34,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838644934] [2023-08-29 17:39:34,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838644934] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:39:34,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:39:34,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:39:34,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435290464] [2023-08-29 17:39:34,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:39:34,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:39:34,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:39:34,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:39:34,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:39:35,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-29 17:39:35,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 51 transitions, 317 flow. Second operand has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:35,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:39:35,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-29 17:39:35,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:39:35,151 INFO L130 PetriNetUnfolder]: 29/119 cut-off events. [2023-08-29 17:39:35,152 INFO L131 PetriNetUnfolder]: For 411/411 co-relation queries the response was YES. [2023-08-29 17:39:35,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 119 events. 29/119 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 245 event pairs, 12 based on Foata normal form. 12/131 useless extension candidates. Maximal degree in co-relation 556. Up to 74 conditions per place. [2023-08-29 17:39:35,152 INFO L137 encePairwiseOnDemand]: 157/166 looper letters, 42 selfloop transitions, 9 changer transitions 14/67 dead transitions. [2023-08-29 17:39:35,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 67 transitions, 563 flow [2023-08-29 17:39:35,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 17:39:35,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 17:39:35,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 634 transitions. [2023-08-29 17:39:35,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243641231593039 [2023-08-29 17:39:35,154 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 634 transitions. [2023-08-29 17:39:35,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 634 transitions. [2023-08-29 17:39:35,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:39:35,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 634 transitions. [2023-08-29 17:39:35,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 70.44444444444444) internal successors, (634), 9 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:35,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:35,156 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 166.0) internal successors, (1660), 10 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:35,157 INFO L175 Difference]: Start difference. First operand has 106 places, 51 transitions, 317 flow. Second operand 9 states and 634 transitions. [2023-08-29 17:39:35,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 67 transitions, 563 flow [2023-08-29 17:39:35,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 67 transitions, 460 flow, removed 16 selfloop flow, removed 20 redundant places. [2023-08-29 17:39:35,159 INFO L231 Difference]: Finished difference. Result has 93 places, 51 transitions, 274 flow [2023-08-29 17:39:35,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=274, PETRI_PLACES=93, PETRI_TRANSITIONS=51} [2023-08-29 17:39:35,160 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 54 predicate places. [2023-08-29 17:39:35,160 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 51 transitions, 274 flow [2023-08-29 17:39:35,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:35,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:39:35,161 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:39:35,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-29 17:39:35,161 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-29 17:39:35,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:39:35,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1413472550, now seen corresponding path program 6 times [2023-08-29 17:39:35,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:39:35,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660847922] [2023-08-29 17:39:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:39:35,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:39:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:39:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:39:35,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:39:35,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660847922] [2023-08-29 17:39:35,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660847922] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:39:35,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:39:35,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 17:39:35,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102094815] [2023-08-29 17:39:35,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:39:35,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:39:35,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:39:35,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:39:35,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-08-29 17:39:35,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 166 [2023-08-29 17:39:35,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 51 transitions, 274 flow. Second operand has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:35,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:39:35,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 166 [2023-08-29 17:39:35,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:39:35,800 INFO L130 PetriNetUnfolder]: 13/72 cut-off events. [2023-08-29 17:39:35,801 INFO L131 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2023-08-29 17:39:35,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 72 events. 13/72 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 17/89 useless extension candidates. Maximal degree in co-relation 280. Up to 27 conditions per place. [2023-08-29 17:39:35,801 INFO L137 encePairwiseOnDemand]: 158/166 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2023-08-29 17:39:35,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 64 transitions, 474 flow [2023-08-29 17:39:35,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-29 17:39:35,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-29 17:39:35,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 760 transitions. [2023-08-29 17:39:35,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621029572836804 [2023-08-29 17:39:35,803 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 760 transitions. [2023-08-29 17:39:35,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 760 transitions. [2023-08-29 17:39:35,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:39:35,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 760 transitions. [2023-08-29 17:39:35,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 69.0909090909091) internal successors, (760), 11 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:35,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 166.0) internal successors, (1992), 12 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:35,806 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 166.0) internal successors, (1992), 12 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:35,806 INFO L175 Difference]: Start difference. First operand has 93 places, 51 transitions, 274 flow. Second operand 11 states and 760 transitions. [2023-08-29 17:39:35,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 64 transitions, 474 flow [2023-08-29 17:39:35,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 64 transitions, 441 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-29 17:39:35,808 INFO L231 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2023-08-29 17:39:35,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2023-08-29 17:39:35,808 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 54 predicate places. [2023-08-29 17:39:35,808 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2023-08-29 17:39:35,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:39:35,810 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 7 remaining) [2023-08-29 17:39:35,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-08-29 17:39:35,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-29 17:39:35,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-08-29 17:39:35,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-08-29 17:39:35,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-08-29 17:39:35,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-08-29 17:39:35,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-29 17:39:35,812 INFO L445 BasicCegarLoop]: Path program histogram: [8, 6, 6, 6, 2, 2, 1, 1, 1] [2023-08-29 17:39:35,816 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 17:39:35,816 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 17:39:35,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 05:39:35 BasicIcfg [2023-08-29 17:39:35,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 17:39:35,819 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 17:39:35,819 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 17:39:35,819 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 17:39:35,819 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:34:46" (3/4) ... [2023-08-29 17:39:35,820 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 17:39:35,824 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-29 17:39:35,827 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-08-29 17:39:35,827 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 17:39:35,827 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-29 17:39:35,856 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 17:39:35,856 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 17:39:35,857 INFO L158 Benchmark]: Toolchain (without parser) took 290423.44ms. Allocated memory was 100.7MB in the beginning and 11.9GB in the end (delta: 11.8GB). Free memory was 77.4MB in the beginning and 7.0GB in the end (delta: -6.9GB). Peak memory consumption was 4.9GB. Max. memory is 16.1GB. [2023-08-29 17:39:35,857 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 71.3MB. Free memory is still 49.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 17:39:35,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 517.92ms. Allocated memory is still 100.7MB. Free memory was 77.2MB in the beginning and 76.6MB in the end (delta: 622.5kB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. [2023-08-29 17:39:35,857 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.79ms. Allocated memory is still 100.7MB. Free memory was 76.6MB in the beginning and 74.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 17:39:35,857 INFO L158 Benchmark]: Boogie Preprocessor took 65.12ms. Allocated memory is still 100.7MB. Free memory was 74.1MB in the beginning and 72.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 17:39:35,857 INFO L158 Benchmark]: RCFGBuilder took 496.91ms. Allocated memory is still 100.7MB. Free memory was 72.0MB in the beginning and 55.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-29 17:39:35,858 INFO L158 Benchmark]: TraceAbstraction took 289234.02ms. Allocated memory was 100.7MB in the beginning and 11.9GB in the end (delta: 11.8GB). Free memory was 54.8MB in the beginning and 7.0GB in the end (delta: -6.9GB). Peak memory consumption was 4.9GB. Max. memory is 16.1GB. [2023-08-29 17:39:35,858 INFO L158 Benchmark]: Witness Printer took 37.66ms. Allocated memory is still 11.9GB. Free memory was 7.0GB in the beginning and 7.0GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 17:39:35,859 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 71.3MB. Free memory is still 49.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 517.92ms. Allocated memory is still 100.7MB. Free memory was 77.2MB in the beginning and 76.6MB in the end (delta: 622.5kB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.79ms. Allocated memory is still 100.7MB. Free memory was 76.6MB in the beginning and 74.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.12ms. Allocated memory is still 100.7MB. Free memory was 74.1MB in the beginning and 72.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 496.91ms. Allocated memory is still 100.7MB. Free memory was 72.0MB in the beginning and 55.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 289234.02ms. Allocated memory was 100.7MB in the beginning and 11.9GB in the end (delta: 11.8GB). Free memory was 54.8MB in the beginning and 7.0GB in the end (delta: -6.9GB). Peak memory consumption was 4.9GB. Max. memory is 16.1GB. * Witness Printer took 37.66ms. Allocated memory is still 11.9GB. Free memory was 7.0GB in the beginning and 7.0GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 97 PlacesBefore, 39 PlacesAfterwards, 97 TransitionsBefore, 36 TransitionsAfterwards, 2088 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 1 ConcurrentYvCompositions, 3 ChoiceCompositions, 68 TotalNumberOfCompositions, 7607 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2210, independent: 1871, independent conditional: 0, independent unconditional: 1871, dependent: 339, dependent conditional: 0, dependent unconditional: 339, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1014, independent: 954, independent conditional: 0, independent unconditional: 954, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2210, independent: 917, independent conditional: 0, independent unconditional: 917, dependent: 279, dependent conditional: 0, dependent unconditional: 279, unknown: 1014, unknown conditional: 0, unknown unconditional: 1014] , Statistics on independence cache: Total cache size (in pairs): 104, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 943]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 943]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 931]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 931]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 132 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 289.1s, OverallIterations: 33, TraceHistogramMax: 10, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 130.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 35 mSolverCounterUnknown, 5895 SdHoareTripleChecker+Valid, 88.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4577 mSDsluCounter, 505 SdHoareTripleChecker+Invalid, 86.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 458 mSDsCounter, 1924 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18917 IncrementalHoareTripleChecker+Invalid, 20876 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1924 mSolverCounterUnsat, 47 mSDtfsCounter, 18917 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 910 GetRequests, 398 SyntacticMatches, 14 SemanticMatches, 498 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2424 ImplicationChecksByTransitivity, 93.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10412occurred in iteration=17, InterpolantAutomatonStates: 329, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 152.1s InterpolantComputationTime, 1167 NumberOfCodeBlocks, 1117 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 1264 ConstructedInterpolants, 19 QuantifiedInterpolants, 22132 SizeOfPredicates, 33 NumberOfNonLiveVariables, 1742 ConjunctsInSsa, 416 ConjunctsInUnsatCore, 50 InterpolantComputations, 31 PerfectInterpolantSequences, 1591/2308 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 17:39:36,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE