./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e22e1beeef18edf77effe210ae0122c1338eccee79cdab905e0b74599361bc08 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 19:21:13,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 19:21:13,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 19:21:13,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 19:21:13,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 19:21:13,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 19:21:13,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 19:21:13,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 19:21:13,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 19:21:13,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 19:21:13,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 19:21:13,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 19:21:13,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 19:21:13,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 19:21:13,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 19:21:13,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 19:21:13,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 19:21:13,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 19:21:13,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 19:21:13,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 19:21:13,456 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 19:21:13,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 19:21:13,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 19:21:13,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 19:21:13,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 19:21:13,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 19:21:13,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 19:21:13,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 19:21:13,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 19:21:13,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 19:21:13,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 19:21:13,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 19:21:13,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 19:21:13,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 19:21:13,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 19:21:13,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 19:21:13,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 19:21:13,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 19:21:13,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 19:21:13,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 19:21:13,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 19:21:13,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 19:21:13,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 19:21:13,502 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 19:21:13,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 19:21:13,503 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 19:21:13,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 19:21:13,504 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 19:21:13,504 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 19:21:13,504 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 19:21:13,504 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 19:21:13,504 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 19:21:13,505 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 19:21:13,505 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 19:21:13,505 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 19:21:13,505 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 19:21:13,506 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 19:21:13,506 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 19:21:13,506 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 19:21:13,506 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 19:21:13,506 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 19:21:13,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 19:21:13,508 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 19:21:13,509 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 19:21:13,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 19:21:13,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 19:21:13,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 19:21:13,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 19:21:13,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 19:21:13,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 19:21:13,510 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 19:21:13,510 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 19:21:13,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 19:21:13,510 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 19:21:13,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 19:21:13,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 19:21:13,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 19:21:13,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:21:13,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 19:21:13,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 19:21:13,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 19:21:13,511 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 19:21:13,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 19:21:13,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 19:21:13,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 19:21:13,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 19:21:13,512 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/UTaipan-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e22e1beeef18edf77effe210ae0122c1338eccee79cdab905e0b74599361bc08 [2022-04-18 19:21:13,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 19:21:13,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 19:21:13,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 19:21:13,755 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 19:21:13,756 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 19:21:13,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2022-04-18 19:21:13,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d7deb4e77/c38c327fe1e54ddf9ea10da78a220b75/FLAG8db43b340 [2022-04-18 19:21:14,122 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 19:21:14,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i [2022-04-18 19:21:14,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d7deb4e77/c38c327fe1e54ddf9ea10da78a220b75/FLAG8db43b340 [2022-04-18 19:21:14,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d7deb4e77/c38c327fe1e54ddf9ea10da78a220b75 [2022-04-18 19:21:14,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 19:21:14,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 19:21:14,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 19:21:14,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 19:21:14,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 19:21:14,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:21:14" (1/1) ... [2022-04-18 19:21:14,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20c60457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:14, skipping insertion in model container [2022-04-18 19:21:14,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:21:14" (1/1) ... [2022-04-18 19:21:14,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 19:21:14,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 19:21:14,784 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i[30035,30048] [2022-04-18 19:21:14,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:21:14,814 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 19:21:14,844 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-array-1.i[30035,30048] [2022-04-18 19:21:14,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:21:14,871 INFO L208 MainTranslator]: Completed translation [2022-04-18 19:21:14,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:14 WrapperNode [2022-04-18 19:21:14,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 19:21:14,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 19:21:14,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 19:21:14,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 19:21:14,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:14" (1/1) ... [2022-04-18 19:21:14,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:14" (1/1) ... [2022-04-18 19:21:14,932 INFO L137 Inliner]: procedures = 170, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2022-04-18 19:21:14,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 19:21:14,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 19:21:14,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 19:21:14,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 19:21:14,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:14" (1/1) ... [2022-04-18 19:21:14,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:14" (1/1) ... [2022-04-18 19:21:14,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:14" (1/1) ... [2022-04-18 19:21:14,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:14" (1/1) ... [2022-04-18 19:21:14,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:14" (1/1) ... [2022-04-18 19:21:14,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:14" (1/1) ... [2022-04-18 19:21:14,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:14" (1/1) ... [2022-04-18 19:21:14,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 19:21:14,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 19:21:14,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 19:21:14,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 19:21:14,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:14" (1/1) ... [2022-04-18 19:21:14,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:21:14,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:21:14,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 19:21:14,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 19:21:15,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-04-18 19:21:15,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 19:21:15,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 19:21:15,015 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2022-04-18 19:21:15,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2022-04-18 19:21:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 19:21:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 19:21:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 19:21:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 19:21:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 19:21:15,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 19:21:15,017 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 19:21:15,142 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 19:21:15,144 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 19:21:15,376 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 19:21:15,382 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 19:21:15,383 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-18 19:21:15,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:21:15 BoogieIcfgContainer [2022-04-18 19:21:15,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 19:21:15,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 19:21:15,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 19:21:15,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 19:21:15,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:21:14" (1/3) ... [2022-04-18 19:21:15,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26051375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:21:15, skipping insertion in model container [2022-04-18 19:21:15,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:21:14" (2/3) ... [2022-04-18 19:21:15,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26051375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:21:15, skipping insertion in model container [2022-04-18 19:21:15,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:21:15" (3/3) ... [2022-04-18 19:21:15,401 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-array-1.i [2022-04-18 19:21:15,404 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 19:21:15,404 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 19:21:15,405 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-04-18 19:21:15,405 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 19:21:15,456 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 19:21:15,483 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:21:15,487 INFO L340 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=FINITE_AUTOMATA, 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 [2022-04-18 19:21:15,488 INFO L341 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-04-18 19:21:15,495 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:21:15,503 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 115 transitions, 238 flow [2022-04-18 19:21:15,505 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 115 transitions, 238 flow [2022-04-18 19:21:15,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 111 places, 115 transitions, 238 flow [2022-04-18 19:21:15,538 INFO L129 PetriNetUnfolder]: 12/164 cut-off events. [2022-04-18 19:21:15,538 INFO L130 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-04-18 19:21:15,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 164 events. 12/164 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 426 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2022-04-18 19:21:15,543 INFO L116 LiptonReduction]: Number of co-enabled transitions 2310 [2022-04-18 19:21:17,832 INFO L131 LiptonReduction]: Checked pairs total: 7139 [2022-04-18 19:21:17,832 INFO L133 LiptonReduction]: Total number of compositions: 103 [2022-04-18 19:21:17,838 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 33 transitions, 74 flow [2022-04-18 19:21:17,855 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 219 states, 197 states have (on average 2.035532994923858) internal successors, (401), 218 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:17,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 219 states, 197 states have (on average 2.035532994923858) internal successors, (401), 218 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:17,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:21:17,862 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:17,862 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:21:17,862 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-04-18 19:21:17,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:17,866 INFO L85 PathProgramCache]: Analyzing trace with hash 12854012, now seen corresponding path program 1 times [2022-04-18 19:21:17,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:17,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65088271] [2022-04-18 19:21:17,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:17,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:17,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:21:17,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:17,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65088271] [2022-04-18 19:21:17,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65088271] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:17,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:17,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 19:21:18,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930922340] [2022-04-18 19:21:18,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:18,003 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:21:18,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:18,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:21:18,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:21:18,023 INFO L87 Difference]: Start difference. First operand has 219 states, 197 states have (on average 2.035532994923858) internal successors, (401), 218 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:18,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:18,061 INFO L93 Difference]: Finished difference Result 179 states and 321 transitions. [2022-04-18 19:21:18,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:21:18,062 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-04-18 19:21:18,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:18,071 INFO L225 Difference]: With dead ends: 179 [2022-04-18 19:21:18,072 INFO L226 Difference]: Without dead ends: 177 [2022-04-18 19:21:18,072 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:21:18,075 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:18,076 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:21:18,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-04-18 19:21:18,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-04-18 19:21:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 167 states have (on average 1.904191616766467) internal successors, (318), 176 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:18,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 318 transitions. [2022-04-18 19:21:18,117 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 318 transitions. Word has length 4 [2022-04-18 19:21:18,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:18,118 INFO L478 AbstractCegarLoop]: Abstraction has 177 states and 318 transitions. [2022-04-18 19:21:18,118 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:18,118 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 318 transitions. [2022-04-18 19:21:18,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 19:21:18,118 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:18,119 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-04-18 19:21:18,119 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 19:21:18,119 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-04-18 19:21:18,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:18,120 INFO L85 PathProgramCache]: Analyzing trace with hash -532176694, now seen corresponding path program 1 times [2022-04-18 19:21:18,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:18,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455835267] [2022-04-18 19:21:18,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:18,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:21:18,147 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:21:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:21:18,174 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:21:18,174 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:21:18,175 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2022-04-18 19:21:18,177 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2022-04-18 19:21:18,177 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2022-04-18 19:21:18,177 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2022-04-18 19:21:18,177 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2022-04-18 19:21:18,177 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2022-04-18 19:21:18,178 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2022-04-18 19:21:18,178 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2022-04-18 19:21:18,178 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2022-04-18 19:21:18,178 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 19:21:18,180 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 19:21:18,180 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:21:18,181 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 19:21:18,190 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 19:21:18,192 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:21:18,192 INFO L340 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=FINITE_AUTOMATA, 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 [2022-04-18 19:21:18,192 INFO L341 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-04-18 19:21:18,194 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:21:18,194 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 138 transitions, 294 flow [2022-04-18 19:21:18,194 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 138 transitions, 294 flow [2022-04-18 19:21:18,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 294 flow [2022-04-18 19:21:18,223 INFO L129 PetriNetUnfolder]: 23/293 cut-off events. [2022-04-18 19:21:18,223 INFO L130 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-04-18 19:21:18,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 293 events. 23/293 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 913 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 166. Up to 8 conditions per place. [2022-04-18 19:21:18,228 INFO L116 LiptonReduction]: Number of co-enabled transitions 5964 [2022-04-18 19:21:20,617 INFO L131 LiptonReduction]: Checked pairs total: 32256 [2022-04-18 19:21:20,618 INFO L133 LiptonReduction]: Total number of compositions: 97 [2022-04-18 19:21:20,619 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 58 transitions, 134 flow [2022-04-18 19:21:20,740 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 6036 states, 5930 states have (on average 2.827487352445194) internal successors, (16767), 6035 states have internal predecessors, (16767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:20,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 6036 states, 5930 states have (on average 2.827487352445194) internal successors, (16767), 6035 states have internal predecessors, (16767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:20,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-04-18 19:21:20,757 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:20,757 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-04-18 19:21:20,758 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-04-18 19:21:20,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:20,758 INFO L85 PathProgramCache]: Analyzing trace with hash 648054786, now seen corresponding path program 1 times [2022-04-18 19:21:20,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:20,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300769433] [2022-04-18 19:21:20,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:20,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:20,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:21:20,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:20,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300769433] [2022-04-18 19:21:20,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300769433] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:20,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:20,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:21:20,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692058235] [2022-04-18 19:21:20,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:20,793 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:21:20,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:20,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:21:20,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:21:20,810 INFO L87 Difference]: Start difference. First operand has 6036 states, 5930 states have (on average 2.827487352445194) internal successors, (16767), 6035 states have internal predecessors, (16767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:20,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:20,983 INFO L93 Difference]: Finished difference Result 7289 states and 19693 transitions. [2022-04-18 19:21:20,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:21:20,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-04-18 19:21:20,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:21,027 INFO L225 Difference]: With dead ends: 7289 [2022-04-18 19:21:21,027 INFO L226 Difference]: Without dead ends: 7285 [2022-04-18 19:21:21,028 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:21:21,029 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 50 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:21,029 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 73 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 19:21:21,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7285 states. [2022-04-18 19:21:21,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7285 to 5665. [2022-04-18 19:21:21,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5665 states, 5578 states have (on average 2.7940121907493727) internal successors, (15585), 5664 states have internal predecessors, (15585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:21,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5665 states to 5665 states and 15585 transitions. [2022-04-18 19:21:21,236 INFO L78 Accepts]: Start accepts. Automaton has 5665 states and 15585 transitions. Word has length 5 [2022-04-18 19:21:21,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:21,237 INFO L478 AbstractCegarLoop]: Abstraction has 5665 states and 15585 transitions. [2022-04-18 19:21:21,237 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand 5665 states and 15585 transitions. [2022-04-18 19:21:21,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-04-18 19:21:21,238 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:21,238 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:21:21,238 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 19:21:21,238 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-04-18 19:21:21,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:21,239 INFO L85 PathProgramCache]: Analyzing trace with hash -578327371, now seen corresponding path program 1 times [2022-04-18 19:21:21,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:21,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324723976] [2022-04-18 19:21:21,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:21,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:21,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:21:21,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:21,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324723976] [2022-04-18 19:21:21,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324723976] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:21,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:21,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 19:21:21,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011984955] [2022-04-18 19:21:21,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:21,323 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-18 19:21:21,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:21,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-18 19:21:21,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-04-18 19:21:21,324 INFO L87 Difference]: Start difference. First operand 5665 states and 15585 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:21,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:21,435 INFO L93 Difference]: Finished difference Result 4673 states and 12094 transitions. [2022-04-18 19:21:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-18 19:21:21,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-04-18 19:21:21,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:21,455 INFO L225 Difference]: With dead ends: 4673 [2022-04-18 19:21:21,455 INFO L226 Difference]: Without dead ends: 4669 [2022-04-18 19:21:21,455 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-04-18 19:21:21,456 INFO L913 BasicCegarLoop]: 54 mSDtfsCounter, 81 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:21,456 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 111 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 19:21:21,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4669 states. [2022-04-18 19:21:21,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4669 to 4271. [2022-04-18 19:21:21,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4271 states, 4197 states have (on average 2.7047891350964974) internal successors, (11352), 4270 states have internal predecessors, (11352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:21,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4271 states to 4271 states and 11352 transitions. [2022-04-18 19:21:21,599 INFO L78 Accepts]: Start accepts. Automaton has 4271 states and 11352 transitions. Word has length 8 [2022-04-18 19:21:21,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:21,599 INFO L478 AbstractCegarLoop]: Abstraction has 4271 states and 11352 transitions. [2022-04-18 19:21:21,599 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:21,599 INFO L276 IsEmpty]: Start isEmpty. Operand 4271 states and 11352 transitions. [2022-04-18 19:21:21,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-18 19:21:21,600 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:21,600 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-04-18 19:21:21,601 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 19:21:21,601 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-04-18 19:21:21,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:21,601 INFO L85 PathProgramCache]: Analyzing trace with hash 819037881, now seen corresponding path program 1 times [2022-04-18 19:21:21,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:21,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744967867] [2022-04-18 19:21:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:21,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:21:21,643 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:21:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:21:21,667 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:21:21,667 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:21:21,667 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2022-04-18 19:21:21,668 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2022-04-18 19:21:21,668 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2022-04-18 19:21:21,668 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2022-04-18 19:21:21,668 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2022-04-18 19:21:21,668 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2022-04-18 19:21:21,668 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2022-04-18 19:21:21,669 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2022-04-18 19:21:21,669 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2022-04-18 19:21:21,669 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2022-04-18 19:21:21,669 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2022-04-18 19:21:21,669 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2022-04-18 19:21:21,669 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 19:21:21,670 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 19:21:21,670 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:21:21,670 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 19:21:21,681 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 19:21:21,682 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:21:21,682 INFO L340 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=FINITE_AUTOMATA, 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 [2022-04-18 19:21:21,682 INFO L341 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-04-18 19:21:21,684 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:21:21,691 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 161 transitions, 352 flow [2022-04-18 19:21:21,692 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 161 transitions, 352 flow [2022-04-18 19:21:21,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 159 places, 161 transitions, 352 flow [2022-04-18 19:21:21,778 INFO L129 PetriNetUnfolder]: 45/519 cut-off events. [2022-04-18 19:21:21,778 INFO L130 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2022-04-18 19:21:21,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 519 events. 45/519 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1984 event pairs, 1 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2022-04-18 19:21:21,793 INFO L116 LiptonReduction]: Number of co-enabled transitions 10458 [2022-04-18 19:21:23,837 INFO L131 LiptonReduction]: Checked pairs total: 55680 [2022-04-18 19:21:23,837 INFO L133 LiptonReduction]: Total number of compositions: 96 [2022-04-18 19:21:23,838 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 75 transitions, 180 flow [2022-04-18 19:21:25,876 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 101812 states, 101310 states have (on average 3.687513572204126) internal successors, (373582), 101811 states have internal predecessors, (373582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:26,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 101812 states, 101310 states have (on average 3.687513572204126) internal successors, (373582), 101811 states have internal predecessors, (373582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:26,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-04-18 19:21:26,023 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:26,023 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-04-18 19:21:26,024 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 19:21:26,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:26,024 INFO L85 PathProgramCache]: Analyzing trace with hash 915497169, now seen corresponding path program 1 times [2022-04-18 19:21:26,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:26,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146422730] [2022-04-18 19:21:26,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:26,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:26,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:26,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:21:26,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:26,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146422730] [2022-04-18 19:21:26,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146422730] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:26,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:26,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:21:26,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366330180] [2022-04-18 19:21:26,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:26,065 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:21:26,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:26,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:21:26,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:21:26,206 INFO L87 Difference]: Start difference. First operand has 101812 states, 101310 states have (on average 3.687513572204126) internal successors, (373582), 101811 states have internal predecessors, (373582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:27,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:27,991 INFO L93 Difference]: Finished difference Result 142613 states and 502592 transitions. [2022-04-18 19:21:27,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:21:27,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-04-18 19:21:27,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:29,300 INFO L225 Difference]: With dead ends: 142613 [2022-04-18 19:21:29,300 INFO L226 Difference]: Without dead ends: 142605 [2022-04-18 19:21:29,300 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:21:29,301 INFO L913 BasicCegarLoop]: 55 mSDtfsCounter, 64 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:29,301 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 89 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 19:21:29,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142605 states. [2022-04-18 19:21:32,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142605 to 98895. [2022-04-18 19:21:32,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98895 states, 98436 states have (on average 3.634361412491365) internal successors, (357752), 98894 states have internal predecessors, (357752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98895 states to 98895 states and 357752 transitions. [2022-04-18 19:21:33,589 INFO L78 Accepts]: Start accepts. Automaton has 98895 states and 357752 transitions. Word has length 5 [2022-04-18 19:21:33,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:33,590 INFO L478 AbstractCegarLoop]: Abstraction has 98895 states and 357752 transitions. [2022-04-18 19:21:33,590 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:33,590 INFO L276 IsEmpty]: Start isEmpty. Operand 98895 states and 357752 transitions. [2022-04-18 19:21:33,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-04-18 19:21:33,590 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:33,590 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:21:33,591 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 19:21:33,591 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 19:21:33,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:33,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1664218219, now seen corresponding path program 1 times [2022-04-18 19:21:33,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:33,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169592262] [2022-04-18 19:21:33,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:33,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:33,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:21:33,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:33,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169592262] [2022-04-18 19:21:33,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169592262] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:33,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:33,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 19:21:33,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047604886] [2022-04-18 19:21:33,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:33,641 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-18 19:21:33,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:33,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-18 19:21:33,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-04-18 19:21:33,641 INFO L87 Difference]: Start difference. First operand 98895 states and 357752 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:34,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:34,612 INFO L93 Difference]: Finished difference Result 85258 states and 293157 transitions. [2022-04-18 19:21:34,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-18 19:21:34,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-04-18 19:21:34,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:35,066 INFO L225 Difference]: With dead ends: 85258 [2022-04-18 19:21:35,066 INFO L226 Difference]: Without dead ends: 85253 [2022-04-18 19:21:35,067 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-04-18 19:21:35,067 INFO L913 BasicCegarLoop]: 84 mSDtfsCounter, 113 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:35,068 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 149 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 19:21:35,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85253 states. [2022-04-18 19:21:37,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85253 to 76122. [2022-04-18 19:21:37,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76122 states, 75720 states have (on average 3.535433174854728) internal successors, (267703), 76121 states have internal predecessors, (267703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:37,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76122 states to 76122 states and 267703 transitions. [2022-04-18 19:21:37,704 INFO L78 Accepts]: Start accepts. Automaton has 76122 states and 267703 transitions. Word has length 8 [2022-04-18 19:21:37,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:37,704 INFO L478 AbstractCegarLoop]: Abstraction has 76122 states and 267703 transitions. [2022-04-18 19:21:37,704 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:37,704 INFO L276 IsEmpty]: Start isEmpty. Operand 76122 states and 267703 transitions. [2022-04-18 19:21:37,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-18 19:21:37,705 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:37,706 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:21:37,706 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 19:21:37,706 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 19:21:37,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:37,706 INFO L85 PathProgramCache]: Analyzing trace with hash 315669270, now seen corresponding path program 1 times [2022-04-18 19:21:37,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:37,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200493369] [2022-04-18 19:21:37,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:37,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 19:21:37,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:37,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200493369] [2022-04-18 19:21:37,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200493369] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:37,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:37,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 19:21:37,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250041049] [2022-04-18 19:21:37,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:37,790 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 19:21:37,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:37,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 19:21:37,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 19:21:37,791 INFO L87 Difference]: Start difference. First operand 76122 states and 267703 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:39,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:39,084 INFO L93 Difference]: Finished difference Result 100180 states and 349615 transitions. [2022-04-18 19:21:39,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 19:21:39,084 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-04-18 19:21:39,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:39,581 INFO L225 Difference]: With dead ends: 100180 [2022-04-18 19:21:39,582 INFO L226 Difference]: Without dead ends: 100175 [2022-04-18 19:21:39,582 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 19:21:39,582 INFO L913 BasicCegarLoop]: 100 mSDtfsCounter, 137 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:39,582 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 211 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-18 19:21:40,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100175 states. [2022-04-18 19:21:42,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100175 to 93845. [2022-04-18 19:21:42,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93845 states, 93450 states have (on average 3.549983948635634) internal successors, (331746), 93844 states have internal predecessors, (331746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:43,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93845 states to 93845 states and 331746 transitions. [2022-04-18 19:21:43,496 INFO L78 Accepts]: Start accepts. Automaton has 93845 states and 331746 transitions. Word has length 12 [2022-04-18 19:21:43,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:43,496 INFO L478 AbstractCegarLoop]: Abstraction has 93845 states and 331746 transitions. [2022-04-18 19:21:43,497 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:43,497 INFO L276 IsEmpty]: Start isEmpty. Operand 93845 states and 331746 transitions. [2022-04-18 19:21:43,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-18 19:21:43,498 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:43,498 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:21:43,498 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 19:21:43,498 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 19:21:43,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:43,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1457405848, now seen corresponding path program 1 times [2022-04-18 19:21:43,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:43,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288167860] [2022-04-18 19:21:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:43,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:21:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 19:21:43,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:21:43,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288167860] [2022-04-18 19:21:43,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288167860] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:21:43,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:21:43,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 19:21:43,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049459426] [2022-04-18 19:21:43,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:21:43,585 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 19:21:43,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:21:43,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 19:21:43,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 19:21:43,586 INFO L87 Difference]: Start difference. First operand 93845 states and 331746 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:45,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:21:45,472 INFO L93 Difference]: Finished difference Result 155210 states and 555227 transitions. [2022-04-18 19:21:45,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 19:21:45,473 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-04-18 19:21:45,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:21:46,371 INFO L225 Difference]: With dead ends: 155210 [2022-04-18 19:21:46,372 INFO L226 Difference]: Without dead ends: 155210 [2022-04-18 19:21:46,372 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 19:21:46,372 INFO L913 BasicCegarLoop]: 92 mSDtfsCounter, 168 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-18 19:21:46,373 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 205 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-18 19:21:46,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155210 states. [2022-04-18 19:21:50,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155210 to 109624. [2022-04-18 19:21:50,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109624 states, 109229 states have (on average 3.5626436202839904) internal successors, (389144), 109623 states have internal predecessors, (389144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:51,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109624 states to 109624 states and 389144 transitions. [2022-04-18 19:21:51,307 INFO L78 Accepts]: Start accepts. Automaton has 109624 states and 389144 transitions. Word has length 12 [2022-04-18 19:21:51,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:21:51,307 INFO L478 AbstractCegarLoop]: Abstraction has 109624 states and 389144 transitions. [2022-04-18 19:21:51,307 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:21:51,307 INFO L276 IsEmpty]: Start isEmpty. Operand 109624 states and 389144 transitions. [2022-04-18 19:21:51,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-04-18 19:21:51,309 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:21:51,309 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-04-18 19:21:51,309 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 19:21:51,309 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 19:21:51,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:21:51,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1685488563, now seen corresponding path program 1 times [2022-04-18 19:21:51,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:21:51,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582765050] [2022-04-18 19:21:51,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:21:51,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:21:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:21:51,349 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:21:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:21:51,371 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:21:51,372 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:21:51,373 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-04-18 19:21:51,373 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-04-18 19:21:51,373 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-04-18 19:21:51,373 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-04-18 19:21:51,374 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-04-18 19:21:51,374 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-04-18 19:21:51,374 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-04-18 19:21:51,374 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-04-18 19:21:51,374 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-04-18 19:21:51,375 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-04-18 19:21:51,375 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-04-18 19:21:51,375 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-04-18 19:21:51,375 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-04-18 19:21:51,375 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-04-18 19:21:51,375 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-04-18 19:21:51,375 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 19:21:51,376 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-18 19:21:51,376 WARN L232 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:21:51,376 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-04-18 19:21:51,393 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-04-18 19:21:51,394 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:21:51,395 INFO L340 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=FINITE_AUTOMATA, 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 [2022-04-18 19:21:51,395 INFO L341 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-04-18 19:21:51,399 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:21:51,399 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 184 transitions, 412 flow [2022-04-18 19:21:51,400 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 184 transitions, 412 flow [2022-04-18 19:21:51,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 183 places, 184 transitions, 412 flow [2022-04-18 19:21:51,486 INFO L129 PetriNetUnfolder]: 91/941 cut-off events. [2022-04-18 19:21:51,486 INFO L130 PetriNetUnfolder]: For 48/52 co-relation queries the response was YES. [2022-04-18 19:21:51,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 941 events. 91/941 cut-off events. For 48/52 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 4471 event pairs, 6 based on Foata normal form. 0/806 useless extension candidates. Maximal degree in co-relation 539. Up to 32 conditions per place. [2022-04-18 19:21:51,516 INFO L116 LiptonReduction]: Number of co-enabled transitions 15960 [2022-04-18 19:21:53,395 INFO L131 LiptonReduction]: Checked pairs total: 88529 [2022-04-18 19:21:53,395 INFO L133 LiptonReduction]: Total number of compositions: 104 [2022-04-18 19:21:53,396 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 92 transitions, 228 flow