./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_74-tricky_address1_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_74-tricky_address1_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 18:27:22,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:27:22,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:27:22,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:27:22,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:27:22,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:27:22,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:27:22,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:27:22,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:27:22,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:27:22,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:27:22,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:27:22,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:27:22,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:27:22,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:27:22,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:27:22,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:27:22,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:27:22,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:27:22,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:27:22,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:27:22,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:27:22,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:27:22,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:27:22,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:27:22,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:27:22,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:27:22,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:27:22,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:27:22,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:27:22,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:27:22,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:27:22,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:27:22,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:27:22,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:27:22,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:27:22,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:27:22,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:27:22,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:27:22,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:27:22,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:27:22,468 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:27:22,492 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:27:22,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:27:22,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:27:22,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:27:22,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:27:22,495 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:27:22,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:27:22,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:27:22,495 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:27:22,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:27:22,496 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:27:22,496 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:27:22,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:27:22,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:27:22,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:27:22,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:27:22,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:27:22,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:27:22,497 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:27:22,498 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:27:22,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:27:22,498 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:27:22,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:27:22,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:27:22,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:27:22,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:27:22,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:27:22,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:27:22,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:27:22,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:27:22,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:27:22,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:27:22,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:27:22,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:27:22,500 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:27:22,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:27:22,500 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:27:22,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a7db49c8892594e32a30fa9165fc3ad1a94911917cd8b63757bb8f24f04b536 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:27:22,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:27:22,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:27:22,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:27:22,748 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:27:22,748 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:27:22,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2023-08-29 18:27:23,655 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:27:23,906 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:27:23,906 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_74-tricky_address1_racefree.i [2023-08-29 18:27:23,927 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d322f5c9f/bd47a5b69d424711a88dc8ff0e4da445/FLAG0049141e2 [2023-08-29 18:27:23,942 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d322f5c9f/bd47a5b69d424711a88dc8ff0e4da445 [2023-08-29 18:27:23,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:27:23,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:27:23,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:27:23,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:27:23,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:27:23,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:27:23" (1/1) ... [2023-08-29 18:27:23,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@513f8b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:23, skipping insertion in model container [2023-08-29 18:27:23,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:27:23" (1/1) ... [2023-08-29 18:27:23,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:27:23,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:27:24,311 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_74-tricky_address1_racefree.i[41323,41336] [2023-08-29 18:27:24,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:27:24,352 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:27:24,395 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_74-tricky_address1_racefree.i[41323,41336] [2023-08-29 18:27:24,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:27:24,468 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:27:24,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:24 WrapperNode [2023-08-29 18:27:24,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:27:24,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:27:24,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:27:24,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:27:24,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:24" (1/1) ... [2023-08-29 18:27:24,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:24" (1/1) ... [2023-08-29 18:27:24,510 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 253 [2023-08-29 18:27:24,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:27:24,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:27:24,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:27:24,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:27:24,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:24" (1/1) ... [2023-08-29 18:27:24,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:24" (1/1) ... [2023-08-29 18:27:24,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:24" (1/1) ... [2023-08-29 18:27:24,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:24" (1/1) ... [2023-08-29 18:27:24,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:24" (1/1) ... [2023-08-29 18:27:24,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:24" (1/1) ... [2023-08-29 18:27:24,537 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:24" (1/1) ... [2023-08-29 18:27:24,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:24" (1/1) ... [2023-08-29 18:27:24,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:27:24,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:27:24,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:27:24,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:27:24,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:24" (1/1) ... [2023-08-29 18:27:24,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:27:24,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:27:24,571 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 18:27:24,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 18:27:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:27:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:27:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:27:24,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:27:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:27:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:27:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:27:24,600 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:27:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:27:24,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:27:24,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:27:24,601 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 18:27:24,710 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:27:24,712 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:27:25,017 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:27:25,022 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:27:25,022 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-29 18:27:25,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:27:25 BoogieIcfgContainer [2023-08-29 18:27:25,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:27:25,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:27:25,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:27:25,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:27:25,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:27:23" (1/3) ... [2023-08-29 18:27:25,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675dc909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:27:25, skipping insertion in model container [2023-08-29 18:27:25,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:27:24" (2/3) ... [2023-08-29 18:27:25,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675dc909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:27:25, skipping insertion in model container [2023-08-29 18:27:25,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:27:25" (3/3) ... [2023-08-29 18:27:25,035 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_74-tricky_address1_racefree.i [2023-08-29 18:27:25,040 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:27:25,046 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:27:25,047 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-29 18:27:25,047 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:27:25,109 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 18:27:25,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 262 transitions, 532 flow [2023-08-29 18:27:25,264 INFO L130 PetriNetUnfolder]: 45/371 cut-off events. [2023-08-29 18:27:25,264 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:27:25,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 371 events. 45/371 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1500 event pairs, 0 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 215. Up to 8 conditions per place. [2023-08-29 18:27:25,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 262 transitions, 532 flow [2023-08-29 18:27:25,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 262 transitions, 532 flow [2023-08-29 18:27:25,285 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:27:25,294 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 262 transitions, 532 flow [2023-08-29 18:27:25,297 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 262 transitions, 532 flow [2023-08-29 18:27:25,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 262 transitions, 532 flow [2023-08-29 18:27:25,344 INFO L130 PetriNetUnfolder]: 45/371 cut-off events. [2023-08-29 18:27:25,344 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:27:25,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 371 events. 45/371 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1500 event pairs, 0 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 215. Up to 8 conditions per place. [2023-08-29 18:27:25,360 INFO L119 LiptonReduction]: Number of co-enabled transitions 23230 [2023-08-29 18:27:27,649 INFO L134 LiptonReduction]: Checked pairs total: 83563 [2023-08-29 18:27:27,649 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-08-29 18:27:27,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:27:27,662 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;@149c45b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:27:27,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 18:27:27,665 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-08-29 18:27:27,666 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:27:27,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:27:27,666 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-29 18:27:27,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:27:27,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:27:27,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1380029164, now seen corresponding path program 1 times [2023-08-29 18:27:27,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:27:27,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857613750] [2023-08-29 18:27:27,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:27,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:27:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:27:27,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:27:27,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857613750] [2023-08-29 18:27:27,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857613750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:27:27,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:27:27,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:27:27,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139031507] [2023-08-29 18:27:27,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:27:27,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:27:27,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:27:27,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:27:27,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:27:27,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 422 [2023-08-29 18:27:27,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 131 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:27,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:27:27,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 422 [2023-08-29 18:27:27,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:27:28,037 INFO L130 PetriNetUnfolder]: 399/1527 cut-off events. [2023-08-29 18:27:28,037 INFO L131 PetriNetUnfolder]: For 3/5 co-relation queries the response was YES. [2023-08-29 18:27:28,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2314 conditions, 1527 events. 399/1527 cut-off events. For 3/5 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10733 event pairs, 357 based on Foata normal form. 145/1529 useless extension candidates. Maximal degree in co-relation 2214. Up to 779 conditions per place. [2023-08-29 18:27:28,043 INFO L137 encePairwiseOnDemand]: 399/422 looper letters, 43 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-08-29 18:27:28,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 112 transitions, 322 flow [2023-08-29 18:27:28,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:27:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:27:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 747 transitions. [2023-08-29 18:27:28,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.590047393364929 [2023-08-29 18:27:28,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 747 transitions. [2023-08-29 18:27:28,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 747 transitions. [2023-08-29 18:27:28,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:27:28,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 747 transitions. [2023-08-29 18:27:28,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:28,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:28,069 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:28,070 INFO L175 Difference]: Start difference. First operand has 110 places, 131 transitions, 270 flow. Second operand 3 states and 747 transitions. [2023-08-29 18:27:28,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 112 transitions, 322 flow [2023-08-29 18:27:28,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 322 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:27:28,075 INFO L231 Difference]: Finished difference. Result has 113 places, 112 transitions, 242 flow [2023-08-29 18:27:28,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=113, PETRI_TRANSITIONS=112} [2023-08-29 18:27:28,079 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 3 predicate places. [2023-08-29 18:27:28,079 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 112 transitions, 242 flow [2023-08-29 18:27:28,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:28,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:27:28,079 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-29 18:27:28,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:27:28,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:27:28,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:27:28,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1826499995, now seen corresponding path program 1 times [2023-08-29 18:27:28,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:27:28,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156278122] [2023-08-29 18:27:28,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:28,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:27:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:28,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:27:28,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:27:28,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156278122] [2023-08-29 18:27:28,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156278122] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:27:28,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970391000] [2023-08-29 18:27:28,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:28,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:27:28,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:27:28,156 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 18:27:28,159 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 18:27:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:28,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:27:28,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:27:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:27:28,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:27:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:27:28,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970391000] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:27:28,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:27:28,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:27:28,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908573381] [2023-08-29 18:27:28,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:27:28,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:27:28,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:27:28,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:27:28,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:27:28,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 422 [2023-08-29 18:27:28,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 112 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 227.57142857142858) internal successors, (1593), 7 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:28,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:27:28,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 422 [2023-08-29 18:27:28,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:27:28,516 INFO L130 PetriNetUnfolder]: 399/1530 cut-off events. [2023-08-29 18:27:28,520 INFO L131 PetriNetUnfolder]: For 3/5 co-relation queries the response was YES. [2023-08-29 18:27:28,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2330 conditions, 1530 events. 399/1530 cut-off events. For 3/5 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10758 event pairs, 357 based on Foata normal form. 0/1387 useless extension candidates. Maximal degree in co-relation 2318. Up to 779 conditions per place. [2023-08-29 18:27:28,526 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 43 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2023-08-29 18:27:28,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 115 transitions, 350 flow [2023-08-29 18:27:28,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:27:28,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:27:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1407 transitions. [2023-08-29 18:27:28,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5556872037914692 [2023-08-29 18:27:28,529 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1407 transitions. [2023-08-29 18:27:28,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1407 transitions. [2023-08-29 18:27:28,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:27:28,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1407 transitions. [2023-08-29 18:27:28,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 234.5) internal successors, (1407), 6 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:28,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:28,538 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 422.0) internal successors, (2954), 7 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:28,538 INFO L175 Difference]: Start difference. First operand has 113 places, 112 transitions, 242 flow. Second operand 6 states and 1407 transitions. [2023-08-29 18:27:28,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 115 transitions, 350 flow [2023-08-29 18:27:28,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 115 transitions, 346 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:27:28,542 INFO L231 Difference]: Finished difference. Result has 120 places, 115 transitions, 274 flow [2023-08-29 18:27:28,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=120, PETRI_TRANSITIONS=115} [2023-08-29 18:27:28,542 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 10 predicate places. [2023-08-29 18:27:28,543 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 115 transitions, 274 flow [2023-08-29 18:27:28,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 227.57142857142858) internal successors, (1593), 7 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:28,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:27:28,544 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-29 18:27:28,550 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 18:27:28,750 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 18:27:28,750 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:27:28,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:27:28,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1475204820, now seen corresponding path program 2 times [2023-08-29 18:27:28,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:27:28,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275836666] [2023-08-29 18:27:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:28,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:27:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:28,840 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:27:28,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:27:28,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275836666] [2023-08-29 18:27:28,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275836666] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:27:28,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146251047] [2023-08-29 18:27:28,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:27:28,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:27:28,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:27:28,844 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 18:27:28,846 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 18:27:28,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:27:28,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:27:28,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:27:28,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:27:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:27:28,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:27:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:27:28,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146251047] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:27:28,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:27:28,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 18:27:28,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307131357] [2023-08-29 18:27:28,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:27:28,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 18:27:28,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:27:28,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 18:27:28,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 18:27:28,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 422 [2023-08-29 18:27:28,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 115 transitions, 274 flow. Second operand has 13 states, 13 states have (on average 227.30769230769232) internal successors, (2955), 13 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:28,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:27:28,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 422 [2023-08-29 18:27:28,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:27:29,181 INFO L130 PetriNetUnfolder]: 399/1536 cut-off events. [2023-08-29 18:27:29,181 INFO L131 PetriNetUnfolder]: For 23/25 co-relation queries the response was YES. [2023-08-29 18:27:29,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2367 conditions, 1536 events. 399/1536 cut-off events. For 23/25 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10758 event pairs, 357 based on Foata normal form. 6/1400 useless extension candidates. Maximal degree in co-relation 2309. Up to 779 conditions per place. [2023-08-29 18:27:29,186 INFO L137 encePairwiseOnDemand]: 419/422 looper letters, 43 selfloop transitions, 11 changer transitions 0/121 dead transitions. [2023-08-29 18:27:29,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 121 transitions, 418 flow [2023-08-29 18:27:29,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:27:29,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:27:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2772 transitions. [2023-08-29 18:27:29,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54739336492891 [2023-08-29 18:27:29,191 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2772 transitions. [2023-08-29 18:27:29,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2772 transitions. [2023-08-29 18:27:29,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:27:29,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2772 transitions. [2023-08-29 18:27:29,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 231.0) internal successors, (2772), 12 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:29,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 422.0) internal successors, (5486), 13 states have internal predecessors, (5486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:29,216 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 422.0) internal successors, (5486), 13 states have internal predecessors, (5486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:29,216 INFO L175 Difference]: Start difference. First operand has 120 places, 115 transitions, 274 flow. Second operand 12 states and 2772 transitions. [2023-08-29 18:27:29,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 121 transitions, 418 flow [2023-08-29 18:27:29,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 121 transitions, 404 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:27:29,221 INFO L231 Difference]: Finished difference. Result has 136 places, 121 transitions, 344 flow [2023-08-29 18:27:29,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=344, PETRI_PLACES=136, PETRI_TRANSITIONS=121} [2023-08-29 18:27:29,222 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 26 predicate places. [2023-08-29 18:27:29,222 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 121 transitions, 344 flow [2023-08-29 18:27:29,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 227.30769230769232) internal successors, (2955), 13 states have internal predecessors, (2955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:29,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:27:29,224 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-29 18:27:29,231 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 18:27:29,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-29 18:27:29,433 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:27:29,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:27:29,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1818521228, now seen corresponding path program 3 times [2023-08-29 18:27:29,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:27:29,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751392268] [2023-08-29 18:27:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:29,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:27:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:27:29,458 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:27:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:27:29,488 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:27:29,488 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:27:29,489 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-29 18:27:29,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-08-29 18:27:29,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-08-29 18:27:29,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-08-29 18:27:29,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-08-29 18:27:29,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-08-29 18:27:29,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-08-29 18:27:29,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-08-29 18:27:29,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-08-29 18:27:29,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-08-29 18:27:29,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-08-29 18:27:29,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-08-29 18:27:29,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-08-29 18:27:29,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-08-29 18:27:29,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-08-29 18:27:29,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-08-29 18:27:29,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-08-29 18:27:29,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:27:29,492 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-29 18:27:29,494 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:27:29,494 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:27:29,522 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 18:27:29,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 365 transitions, 748 flow [2023-08-29 18:27:29,591 INFO L130 PetriNetUnfolder]: 75/613 cut-off events. [2023-08-29 18:27:29,591 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:27:29,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 613 events. 75/613 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3045 event pairs, 0 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 373. Up to 12 conditions per place. [2023-08-29 18:27:29,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 365 transitions, 748 flow [2023-08-29 18:27:29,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 365 transitions, 748 flow [2023-08-29 18:27:29,599 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:27:29,599 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 325 places, 365 transitions, 748 flow [2023-08-29 18:27:29,599 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 325 places, 365 transitions, 748 flow [2023-08-29 18:27:29,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 365 transitions, 748 flow [2023-08-29 18:27:29,648 INFO L130 PetriNetUnfolder]: 75/613 cut-off events. [2023-08-29 18:27:29,648 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 18:27:29,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 613 events. 75/613 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3045 event pairs, 0 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 373. Up to 12 conditions per place. [2023-08-29 18:27:29,672 INFO L119 LiptonReduction]: Number of co-enabled transitions 69084 [2023-08-29 18:27:32,195 INFO L134 LiptonReduction]: Checked pairs total: 251503 [2023-08-29 18:27:32,195 INFO L136 LiptonReduction]: Total number of compositions: 222 [2023-08-29 18:27:32,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:27:32,197 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;@149c45b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:27:32,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 18:27:32,202 INFO L130 PetriNetUnfolder]: 15/88 cut-off events. [2023-08-29 18:27:32,202 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:27:32,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:27:32,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:27:32,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:27:32,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:27:32,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1093580801, now seen corresponding path program 1 times [2023-08-29 18:27:32,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:27:32,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955090720] [2023-08-29 18:27:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:32,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:27:32,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:27:32,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:27:32,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955090720] [2023-08-29 18:27:32,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955090720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:27:32,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:27:32,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:27:32,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375662498] [2023-08-29 18:27:32,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:27:32,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:27:32,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:27:32,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:27:32,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:27:32,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 587 [2023-08-29 18:27:32,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 193 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:32,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:27:32,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 587 [2023-08-29 18:27:32,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:27:34,706 INFO L130 PetriNetUnfolder]: 14690/34803 cut-off events. [2023-08-29 18:27:34,707 INFO L131 PetriNetUnfolder]: For 172/244 co-relation queries the response was YES. [2023-08-29 18:27:34,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56176 conditions, 34803 events. 14690/34803 cut-off events. For 172/244 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 374395 event pairs, 13600 based on Foata normal form. 4190/36114 useless extension candidates. Maximal degree in co-relation 26712. Up to 21259 conditions per place. [2023-08-29 18:27:34,878 INFO L137 encePairwiseOnDemand]: 553/587 looper letters, 62 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2023-08-29 18:27:34,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 163 transitions, 472 flow [2023-08-29 18:27:34,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:27:34,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:27:34,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1041 transitions. [2023-08-29 18:27:34,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911413969335605 [2023-08-29 18:27:34,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1041 transitions. [2023-08-29 18:27:34,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1041 transitions. [2023-08-29 18:27:34,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:27:34,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1041 transitions. [2023-08-29 18:27:34,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:34,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:34,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:34,888 INFO L175 Difference]: Start difference. First operand has 161 places, 193 transitions, 404 flow. Second operand 3 states and 1041 transitions. [2023-08-29 18:27:34,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 163 transitions, 472 flow [2023-08-29 18:27:34,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 163 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:27:34,893 INFO L231 Difference]: Finished difference. Result has 164 places, 163 transitions, 354 flow [2023-08-29 18:27:34,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=164, PETRI_TRANSITIONS=163} [2023-08-29 18:27:34,895 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 3 predicate places. [2023-08-29 18:27:34,895 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 163 transitions, 354 flow [2023-08-29 18:27:34,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:34,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:27:34,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:27:34,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 18:27:34,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:27:34,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:27:34,896 INFO L85 PathProgramCache]: Analyzing trace with hash 719712138, now seen corresponding path program 1 times [2023-08-29 18:27:34,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:27:34,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903020725] [2023-08-29 18:27:34,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:34,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:27:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:34,937 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 18:27:34,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:27:34,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903020725] [2023-08-29 18:27:34,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903020725] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:27:34,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312328574] [2023-08-29 18:27:34,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:34,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:27:34,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:27:34,939 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 18:27:34,955 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 18:27:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:35,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 18:27:35,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:27:35,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 18:27:35,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:27:35,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312328574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:27:35,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:27:35,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-29 18:27:35,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506721000] [2023-08-29 18:27:35,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:27:35,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:27:35,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:27:35,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:27:35,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 18:27:35,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 587 [2023-08-29 18:27:35,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 163 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:35,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:27:35,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 587 [2023-08-29 18:27:35,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:27:37,173 INFO L130 PetriNetUnfolder]: 14345/34814 cut-off events. [2023-08-29 18:27:37,173 INFO L131 PetriNetUnfolder]: For 150/188 co-relation queries the response was YES. [2023-08-29 18:27:37,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56197 conditions, 34814 events. 14345/34814 cut-off events. For 150/188 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 382653 event pairs, 6494 based on Foata normal form. 0/31893 useless extension candidates. Maximal degree in co-relation 56184. Up to 21223 conditions per place. [2023-08-29 18:27:37,342 INFO L137 encePairwiseOnDemand]: 584/587 looper letters, 81 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2023-08-29 18:27:37,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 182 transitions, 558 flow [2023-08-29 18:27:37,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:27:37,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:27:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1028 transitions. [2023-08-29 18:27:37,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5837592277115276 [2023-08-29 18:27:37,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1028 transitions. [2023-08-29 18:27:37,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1028 transitions. [2023-08-29 18:27:37,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:27:37,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1028 transitions. [2023-08-29 18:27:37,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:37,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:37,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:37,350 INFO L175 Difference]: Start difference. First operand has 164 places, 163 transitions, 354 flow. Second operand 3 states and 1028 transitions. [2023-08-29 18:27:37,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 182 transitions, 558 flow [2023-08-29 18:27:37,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 182 transitions, 554 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:27:37,355 INFO L231 Difference]: Finished difference. Result has 166 places, 164 transitions, 362 flow [2023-08-29 18:27:37,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=166, PETRI_TRANSITIONS=164} [2023-08-29 18:27:37,358 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 5 predicate places. [2023-08-29 18:27:37,358 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 362 flow [2023-08-29 18:27:37,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:37,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:27:37,359 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-29 18:27:37,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 18:27:37,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:27:37,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:27:37,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:27:37,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1402746227, now seen corresponding path program 1 times [2023-08-29 18:27:37,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:27:37,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226563028] [2023-08-29 18:27:37,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:37,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:27:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:37,602 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:27:37,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:27:37,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226563028] [2023-08-29 18:27:37,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226563028] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:27:37,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806627439] [2023-08-29 18:27:37,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:37,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:27:37,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:27:37,607 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 18:27:37,609 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 18:27:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:37,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:27:37,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:27:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:27:37,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:27:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:27:37,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806627439] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:27:37,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:27:37,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:27:37,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481046698] [2023-08-29 18:27:37,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:27:37,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:27:37,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:27:37,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:27:37,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:27:37,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 587 [2023-08-29 18:27:37,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 362 flow. Second operand has 7 states, 7 states have (on average 315.7142857142857) internal successors, (2210), 7 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:37,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:27:37,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 587 [2023-08-29 18:27:37,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:27:39,988 INFO L130 PetriNetUnfolder]: 14723/35112 cut-off events. [2023-08-29 18:27:39,988 INFO L131 PetriNetUnfolder]: For 855/870 co-relation queries the response was YES. [2023-08-29 18:27:40,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57183 conditions, 35112 events. 14723/35112 cut-off events. For 855/870 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 380131 event pairs, 13600 based on Foata normal form. 3/32440 useless extension candidates. Maximal degree in co-relation 57155. Up to 21242 conditions per place. [2023-08-29 18:27:40,129 INFO L137 encePairwiseOnDemand]: 584/587 looper letters, 63 selfloop transitions, 5 changer transitions 0/167 dead transitions. [2023-08-29 18:27:40,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 167 transitions, 510 flow [2023-08-29 18:27:40,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:27:40,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:27:40,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1954 transitions. [2023-08-29 18:27:40,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5547984099943214 [2023-08-29 18:27:40,133 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1954 transitions. [2023-08-29 18:27:40,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1954 transitions. [2023-08-29 18:27:40,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:27:40,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1954 transitions. [2023-08-29 18:27:40,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 325.6666666666667) internal successors, (1954), 6 states have internal predecessors, (1954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:40,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:40,140 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:40,141 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 362 flow. Second operand 6 states and 1954 transitions. [2023-08-29 18:27:40,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 167 transitions, 510 flow [2023-08-29 18:27:40,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 167 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:27:40,144 INFO L231 Difference]: Finished difference. Result has 173 places, 167 transitions, 396 flow [2023-08-29 18:27:40,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=396, PETRI_PLACES=173, PETRI_TRANSITIONS=167} [2023-08-29 18:27:40,144 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 12 predicate places. [2023-08-29 18:27:40,144 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 167 transitions, 396 flow [2023-08-29 18:27:40,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 315.7142857142857) internal successors, (2210), 7 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:40,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:27:40,145 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 18:27:40,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-29 18:27:40,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:27:40,350 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:27:40,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:27:40,350 INFO L85 PathProgramCache]: Analyzing trace with hash -806908029, now seen corresponding path program 2 times [2023-08-29 18:27:40,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:27:40,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802512353] [2023-08-29 18:27:40,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:40,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:27:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:27:40,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:27:40,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802512353] [2023-08-29 18:27:40,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802512353] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:27:40,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125112414] [2023-08-29 18:27:40,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:27:40,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:27:40,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:27:40,424 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 18:27:40,427 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 18:27:40,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:27:40,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:27:40,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:27:40,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:27:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:27:40,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:27:40,540 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-29 18:27:40,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125112414] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:27:40,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:27:40,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 18:27:40,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656464427] [2023-08-29 18:27:40,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:27:40,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 18:27:40,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:27:40,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 18:27:40,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 18:27:40,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 587 [2023-08-29 18:27:40,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 167 transitions, 396 flow. Second operand has 13 states, 13 states have (on average 315.38461538461536) internal successors, (4100), 13 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:40,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:27:40,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 587 [2023-08-29 18:27:40,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:27:43,045 INFO L130 PetriNetUnfolder]: 14723/35118 cut-off events. [2023-08-29 18:27:43,045 INFO L131 PetriNetUnfolder]: For 889/904 co-relation queries the response was YES. [2023-08-29 18:27:43,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57204 conditions, 35118 events. 14723/35118 cut-off events. For 889/904 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 380222 event pairs, 13600 based on Foata normal form. 6/32449 useless extension candidates. Maximal degree in co-relation 57144. Up to 21242 conditions per place. [2023-08-29 18:27:43,174 INFO L137 encePairwiseOnDemand]: 584/587 looper letters, 63 selfloop transitions, 11 changer transitions 0/173 dead transitions. [2023-08-29 18:27:43,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 173 transitions, 580 flow [2023-08-29 18:27:43,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:27:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:27:43,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3847 transitions. [2023-08-29 18:27:43,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461385576377058 [2023-08-29 18:27:43,181 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3847 transitions. [2023-08-29 18:27:43,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3847 transitions. [2023-08-29 18:27:43,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:27:43,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3847 transitions. [2023-08-29 18:27:43,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 320.5833333333333) internal successors, (3847), 12 states have internal predecessors, (3847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:43,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 587.0) internal successors, (7631), 13 states have internal predecessors, (7631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:43,203 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 587.0) internal successors, (7631), 13 states have internal predecessors, (7631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:43,204 INFO L175 Difference]: Start difference. First operand has 173 places, 167 transitions, 396 flow. Second operand 12 states and 3847 transitions. [2023-08-29 18:27:43,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 173 transitions, 580 flow [2023-08-29 18:27:43,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 173 transitions, 566 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:27:43,208 INFO L231 Difference]: Finished difference. Result has 189 places, 173 transitions, 466 flow [2023-08-29 18:27:43,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=466, PETRI_PLACES=189, PETRI_TRANSITIONS=173} [2023-08-29 18:27:43,209 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, 28 predicate places. [2023-08-29 18:27:43,209 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 173 transitions, 466 flow [2023-08-29 18:27:43,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 315.38461538461536) internal successors, (4100), 13 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:43,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:27:43,210 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-29 18:27:43,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-29 18:27:43,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:27:43,416 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-08-29 18:27:43,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:27:43,416 INFO L85 PathProgramCache]: Analyzing trace with hash 48943939, now seen corresponding path program 3 times [2023-08-29 18:27:43,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:27:43,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089541125] [2023-08-29 18:27:43,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:43,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:27:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:27:43,439 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:27:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:27:43,464 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:27:43,464 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:27:43,464 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-29 18:27:43,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 18:27:43,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 18:27:43,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 18:27:43,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 18:27:43,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 18:27:43,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 18:27:43,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 18:27:43,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 18:27:43,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 18:27:43,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 18:27:43,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 18:27:43,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 18:27:43,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 18:27:43,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 18:27:43,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 18:27:43,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 18:27:43,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 18:27:43,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 18:27:43,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 18:27:43,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 18:27:43,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 18:27:43,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 18:27:43,469 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-29 18:27:43,469 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:27:43,469 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 18:27:43,506 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 18:27:43,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 416 places, 468 transitions, 966 flow [2023-08-29 18:27:43,612 INFO L130 PetriNetUnfolder]: 110/898 cut-off events. [2023-08-29 18:27:43,612 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:27:43,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 898 events. 110/898 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4965 event pairs, 1 based on Foata normal form. 0/741 useless extension candidates. Maximal degree in co-relation 621. Up to 16 conditions per place. [2023-08-29 18:27:43,626 INFO L82 GeneralOperation]: Start removeDead. Operand has 416 places, 468 transitions, 966 flow [2023-08-29 18:27:43,632 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 416 places, 468 transitions, 966 flow [2023-08-29 18:27:43,632 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:27:43,633 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 416 places, 468 transitions, 966 flow [2023-08-29 18:27:43,633 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 416 places, 468 transitions, 966 flow [2023-08-29 18:27:43,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 416 places, 468 transitions, 966 flow [2023-08-29 18:27:43,728 INFO L130 PetriNetUnfolder]: 110/898 cut-off events. [2023-08-29 18:27:43,729 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 18:27:43,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 898 events. 110/898 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4965 event pairs, 1 based on Foata normal form. 0/741 useless extension candidates. Maximal degree in co-relation 621. Up to 16 conditions per place. [2023-08-29 18:27:43,775 INFO L119 LiptonReduction]: Number of co-enabled transitions 135138 [2023-08-29 18:27:47,016 INFO L134 LiptonReduction]: Checked pairs total: 496005 [2023-08-29 18:27:47,016 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-08-29 18:27:47,018 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:27:47,019 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;@149c45b3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:27:47,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-29 18:27:47,022 INFO L130 PetriNetUnfolder]: 14/73 cut-off events. [2023-08-29 18:27:47,023 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 18:27:47,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:27:47,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:27:47,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:27:47,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:27:47,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1281418193, now seen corresponding path program 1 times [2023-08-29 18:27:47,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:27:47,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044815721] [2023-08-29 18:27:47,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:27:47,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:27:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:27:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:27:47,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:27:47,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044815721] [2023-08-29 18:27:47,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044815721] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:27:47,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:27:47,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:27:47,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171443110] [2023-08-29 18:27:47,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:27:47,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:27:47,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:27:47,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:27:47,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:27:47,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 744 [2023-08-29 18:27:47,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 252 transitions, 534 flow. Second operand has 3 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:27:47,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:27:47,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 744 [2023-08-29 18:27:47,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:28:41,777 INFO L130 PetriNetUnfolder]: 402738/765384 cut-off events. [2023-08-29 18:28:41,778 INFO L131 PetriNetUnfolder]: For 5313/5871 co-relation queries the response was YES. [2023-08-29 18:28:43,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1284542 conditions, 765384 events. 402738/765384 cut-off events. For 5313/5871 co-relation queries the response was YES. Maximal size of possible extension queue 15602. Compared 10015239 event pairs, 377214 based on Foata normal form. 86989/790663 useless extension candidates. Maximal degree in co-relation 297193. Up to 516526 conditions per place. [2023-08-29 18:28:46,788 INFO L137 encePairwiseOnDemand]: 700/744 looper letters, 81 selfloop transitions, 2 changer transitions 0/212 dead transitions. [2023-08-29 18:28:46,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 212 transitions, 620 flow [2023-08-29 18:28:46,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:28:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:28:46,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1334 transitions. [2023-08-29 18:28:46,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5976702508960573 [2023-08-29 18:28:46,791 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1334 transitions. [2023-08-29 18:28:46,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1334 transitions. [2023-08-29 18:28:46,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:28:46,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1334 transitions. [2023-08-29 18:28:46,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 444.6666666666667) internal successors, (1334), 3 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:46,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 744.0) internal successors, (2976), 4 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:46,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 744.0) internal successors, (2976), 4 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:46,796 INFO L175 Difference]: Start difference. First operand has 210 places, 252 transitions, 534 flow. Second operand 3 states and 1334 transitions. [2023-08-29 18:28:46,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 212 transitions, 620 flow [2023-08-29 18:28:46,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 212 transitions, 620 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:28:46,800 INFO L231 Difference]: Finished difference. Result has 213 places, 212 transitions, 464 flow [2023-08-29 18:28:46,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=213, PETRI_TRANSITIONS=212} [2023-08-29 18:28:46,801 INFO L281 CegarLoopForPetriNet]: 210 programPoint places, 3 predicate places. [2023-08-29 18:28:46,801 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 212 transitions, 464 flow [2023-08-29 18:28:46,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:46,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:28:46,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:28:46,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 18:28:46,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:28:46,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:28:46,802 INFO L85 PathProgramCache]: Analyzing trace with hash 553210204, now seen corresponding path program 1 times [2023-08-29 18:28:46,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:28:46,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707406093] [2023-08-29 18:28:46,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:46,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:28:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:46,826 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 18:28:46,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:28:46,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707406093] [2023-08-29 18:28:46,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707406093] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:28:46,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457281945] [2023-08-29 18:28:46,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:28:46,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:28:46,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:28:46,829 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 18:28:46,830 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 18:28:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:28:46,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 18:28:46,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:28:46,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 18:28:46,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:28:46,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457281945] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:28:46,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:28:46,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-29 18:28:46,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406039770] [2023-08-29 18:28:46,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:28:46,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:28:46,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:28:46,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:28:46,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 18:28:46,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 744 [2023-08-29 18:28:46,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 212 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 405.0) internal successors, (1215), 3 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:28:46,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:28:46,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 744 [2023-08-29 18:28:46,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:29:41,148 INFO L130 PetriNetUnfolder]: 397598/763072 cut-off events. [2023-08-29 18:29:41,148 INFO L131 PetriNetUnfolder]: For 5779/6691 co-relation queries the response was YES. [2023-08-29 18:29:43,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1282460 conditions, 763072 events. 397598/763072 cut-off events. For 5779/6691 co-relation queries the response was YES. Maximal size of possible extension queue 15637. Compared 10108057 event pairs, 247402 based on Foata normal form. 0/699853 useless extension candidates. Maximal degree in co-relation 1282446. Up to 516490 conditions per place. [2023-08-29 18:29:46,515 INFO L137 encePairwiseOnDemand]: 741/744 looper letters, 100 selfloop transitions, 2 changer transitions 0/231 dead transitions. [2023-08-29 18:29:46,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 231 transitions, 706 flow [2023-08-29 18:29:46,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:29:46,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:29:46,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1311 transitions. [2023-08-29 18:29:46,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5873655913978495 [2023-08-29 18:29:46,518 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1311 transitions. [2023-08-29 18:29:46,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1311 transitions. [2023-08-29 18:29:46,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:29:46,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1311 transitions. [2023-08-29 18:29:46,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 437.0) internal successors, (1311), 3 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:46,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 744.0) internal successors, (2976), 4 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:46,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 744.0) internal successors, (2976), 4 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:46,522 INFO L175 Difference]: Start difference. First operand has 213 places, 212 transitions, 464 flow. Second operand 3 states and 1311 transitions. [2023-08-29 18:29:46,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 231 transitions, 706 flow [2023-08-29 18:29:46,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 231 transitions, 702 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:29:46,527 INFO L231 Difference]: Finished difference. Result has 215 places, 213 transitions, 472 flow [2023-08-29 18:29:46,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=472, PETRI_PLACES=215, PETRI_TRANSITIONS=213} [2023-08-29 18:29:46,528 INFO L281 CegarLoopForPetriNet]: 210 programPoint places, 5 predicate places. [2023-08-29 18:29:46,528 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 213 transitions, 472 flow [2023-08-29 18:29:46,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 405.0) internal successors, (1215), 3 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:46,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:29:46,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:29:46,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-29 18:29:46,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:29:46,733 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:29:46,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:29:46,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1707501321, now seen corresponding path program 1 times [2023-08-29 18:29:46,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:29:46,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882901079] [2023-08-29 18:29:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:29:46,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:29:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:29:46,765 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 18:29:46,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:29:46,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882901079] [2023-08-29 18:29:46,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882901079] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:29:46,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822001960] [2023-08-29 18:29:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:29:46,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:29:46,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:29:46,767 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 18:29:46,769 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 18:29:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:29:46,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:29:46,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:29:46,850 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 18:29:46,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:29:46,863 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 18:29:46,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822001960] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:29:46,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 18:29:46,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 18:29:46,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740104236] [2023-08-29 18:29:46,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 18:29:46,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 18:29:46,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:29:46,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 18:29:46,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 18:29:46,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 744 [2023-08-29 18:29:46,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 213 transitions, 472 flow. Second operand has 7 states, 7 states have (on average 403.85714285714283) internal successors, (2827), 7 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:29:46,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:29:46,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 744 [2023-08-29 18:29:46,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:30:43,733 INFO L130 PetriNetUnfolder]: 403391/766306 cut-off events. [2023-08-29 18:30:43,733 INFO L131 PetriNetUnfolder]: For 17816/18802 co-relation queries the response was YES. [2023-08-29 18:30:46,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1297826 conditions, 766306 events. 403391/766306 cut-off events. For 17816/18802 co-relation queries the response was YES. Maximal size of possible extension queue 15690. Compared 10038197 event pairs, 377214 based on Foata normal form. 3/709184 useless extension candidates. Maximal degree in co-relation 1297797. Up to 516509 conditions per place. [2023-08-29 18:30:49,485 INFO L137 encePairwiseOnDemand]: 741/744 looper letters, 82 selfloop transitions, 5 changer transitions 0/216 dead transitions. [2023-08-29 18:30:49,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 216 transitions, 658 flow [2023-08-29 18:30:49,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:30:49,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:30:49,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2501 transitions. [2023-08-29 18:30:49,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602598566308243 [2023-08-29 18:30:49,489 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2501 transitions. [2023-08-29 18:30:49,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2501 transitions. [2023-08-29 18:30:49,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:30:49,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2501 transitions. [2023-08-29 18:30:49,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 416.8333333333333) internal successors, (2501), 6 states have internal predecessors, (2501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:49,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 744.0) internal successors, (5208), 7 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:49,496 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 744.0) internal successors, (5208), 7 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:49,496 INFO L175 Difference]: Start difference. First operand has 215 places, 213 transitions, 472 flow. Second operand 6 states and 2501 transitions. [2023-08-29 18:30:49,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 216 transitions, 658 flow [2023-08-29 18:30:49,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 216 transitions, 656 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:30:49,503 INFO L231 Difference]: Finished difference. Result has 222 places, 216 transitions, 506 flow [2023-08-29 18:30:49,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=744, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=506, PETRI_PLACES=222, PETRI_TRANSITIONS=216} [2023-08-29 18:30:49,504 INFO L281 CegarLoopForPetriNet]: 210 programPoint places, 12 predicate places. [2023-08-29 18:30:49,504 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 216 transitions, 506 flow [2023-08-29 18:30:49,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 403.85714285714283) internal successors, (2827), 7 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:49,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:30:49,505 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:30:49,516 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 18:30:49,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:30:49,709 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-29 18:30:49,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:30:49,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2146690610, now seen corresponding path program 2 times [2023-08-29 18:30:49,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:30:49,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551892553] [2023-08-29 18:30:49,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:30:49,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:30:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:30:49,767 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 18:30:49,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:30:49,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551892553] [2023-08-29 18:30:49,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551892553] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:30:49,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119108261] [2023-08-29 18:30:49,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:30:49,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:30:49,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:30:49,769 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 18:30:49,773 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 18:30:49,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 18:30:49,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:30:49,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 18:30:49,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:30:49,867 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 11 treesize of output 7 [2023-08-29 18:30:49,877 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 21 treesize of output 20 [2023-08-29 18:30:49,892 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 18:30:49,893 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 30 treesize of output 32 [2023-08-29 18:30:49,923 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 18:30:49,923 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 39 treesize of output 44 [2023-08-29 18:30:49,939 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 18:30:49,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:30:49,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119108261] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:30:49,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:30:49,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-29 18:30:49,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25317902] [2023-08-29 18:30:49,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:30:49,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:30:49,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:30:49,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:30:49,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-08-29 18:30:50,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 354 out of 744 [2023-08-29 18:30:50,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 216 transitions, 506 flow. Second operand has 6 states, 6 states have (on average 356.1666666666667) internal successors, (2137), 6 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:30:50,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:30:50,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 354 of 744 [2023-08-29 18:30:50,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand