./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.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/goblint-regression/28-race_reach_21-deref_read_racing.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 cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:42:50,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:42:50,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:42:50,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:42:50,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:42:50,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:42:50,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:42:50,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:42:50,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:42:50,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:42:50,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:42:50,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:42:50,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:42:50,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:42:50,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:42:50,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:42:50,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:42:50,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:42:50,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:42:50,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:42:50,629 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:42:50,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:42:50,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:42:50,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:42:50,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:42:50,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:42:50,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:42:50,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:42:50,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:42:50,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:42:50,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:42:50,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:42:50,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:42:50,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:42:50,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:42:50,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:42:50,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:42:50,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:42:50,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:42:50,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:42:50,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:42:50,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:42:50,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 18:42:50,685 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:42:50,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:42:50,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:42:50,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:42:50,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:42:50,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:42:50,687 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 18:42:50,687 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 18:42:50,687 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 18:42:50,688 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 18:42:50,688 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 18:42:50,688 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 18:42:50,688 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 18:42:50,689 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 18:42:50,689 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 18:42:50,689 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 18:42:50,689 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 18:42:50,689 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 18:42:50,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:42:50,690 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:42:50,690 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:42:50,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 18:42:50,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:42:50,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:42:50,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:42:50,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:42:50,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:42:50,691 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:42:50,692 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:42:50,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:42:50,692 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:42:50,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:42:50,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:42:50,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:42:50,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:42:50,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:42:50,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:42:50,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:42:50,693 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 18:42:50,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 18:42:50,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:42:50,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 18:42:50,694 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 18:42:50,694 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb010ae024b402436affeb854f96a5f9e0df3d8ec2cfe8b3a7f33676b7169a2c [2022-04-18 18:42:50,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:42:50,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:42:50,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:42:50,921 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:42:50,921 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:42:50,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i [2022-04-18 18:42:50,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fe9996199/8ab2e8a9f78c4e95aa22e703e116d34b/FLAG6ecee5c3c [2022-04-18 18:42:51,393 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:42:51,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i [2022-04-18 18:42:51,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fe9996199/8ab2e8a9f78c4e95aa22e703e116d34b/FLAG6ecee5c3c [2022-04-18 18:42:51,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fe9996199/8ab2e8a9f78c4e95aa22e703e116d34b [2022-04-18 18:42:51,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:42:51,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:42:51,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:42:51,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:42:51,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:42:51,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:42:51" (1/1) ... [2022-04-18 18:42:51,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27a8c8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:51, skipping insertion in model container [2022-04-18 18:42:51,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:42:51" (1/1) ... [2022-04-18 18:42:51,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:42:51,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:42:51,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i[30176,30189] [2022-04-18 18:42:51,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:42:51,721 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:42:51,748 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_21-deref_read_racing.i[30176,30189] [2022-04-18 18:42:51,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:42:51,781 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:42:51,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:51 WrapperNode [2022-04-18 18:42:51,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:42:51,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:42:51,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:42:51,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:42:51,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:51" (1/1) ... [2022-04-18 18:42:51,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:51" (1/1) ... [2022-04-18 18:42:51,811 INFO L137 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2022-04-18 18:42:51,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:42:51,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:42:51,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:42:51,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:42:51,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:51" (1/1) ... [2022-04-18 18:42:51,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:51" (1/1) ... [2022-04-18 18:42:51,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:51" (1/1) ... [2022-04-18 18:42:51,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:51" (1/1) ... [2022-04-18 18:42:51,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:51" (1/1) ... [2022-04-18 18:42:51,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:51" (1/1) ... [2022-04-18 18:42:51,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:51" (1/1) ... [2022-04-18 18:42:51,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:42:51,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:42:51,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:42:51,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:42:51,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:51" (1/1) ... [2022-04-18 18:42:51,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:42:51,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:42:51,870 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 18:42:51,875 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 18:42:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 18:42:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 18:42:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 18:42:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:42:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:42:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-04-18 18:42:51,903 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-04-18 18:42:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:42:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 18:42:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:42:51,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:42:51,904 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 18:42:51,978 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:42:51,983 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:42:52,206 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:42:52,212 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:42:52,213 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-04-18 18:42:52,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:42:52 BoogieIcfgContainer [2022-04-18 18:42:52,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:42:52,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:42:52,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:42:52,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:42:52,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:42:51" (1/3) ... [2022-04-18 18:42:52,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19854041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:42:52, skipping insertion in model container [2022-04-18 18:42:52,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:51" (2/3) ... [2022-04-18 18:42:52,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19854041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:42:52, skipping insertion in model container [2022-04-18 18:42:52,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:42:52" (3/3) ... [2022-04-18 18:42:52,224 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_21-deref_read_racing.i [2022-04-18 18:42:52,228 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:42:52,229 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:42:52,229 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-04-18 18:42:52,229 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:42:52,270 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 18:42:52,306 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:42:52,311 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 18:42:52,311 INFO L341 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-04-18 18:42:52,320 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:42:52,331 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 153 transitions, 311 flow [2022-04-18 18:42:52,338 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 153 transitions, 311 flow [2022-04-18 18:42:52,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 146 places, 153 transitions, 311 flow [2022-04-18 18:42:52,402 INFO L129 PetriNetUnfolder]: 14/200 cut-off events. [2022-04-18 18:42:52,403 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 18:42:52,410 INFO L84 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 200 events. 14/200 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 550 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 118. Up to 4 conditions per place. [2022-04-18 18:42:52,418 INFO L116 LiptonReduction]: Number of co-enabled transitions 6996 [2022-04-18 18:42:55,528 INFO L131 LiptonReduction]: Checked pairs total: 38240 [2022-04-18 18:42:55,529 INFO L133 LiptonReduction]: Total number of compositions: 146 [2022-04-18 18:42:55,535 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 62 transitions, 129 flow [2022-04-18 18:42:55,581 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 663 states, 616 states have (on average 2.3295454545454546) internal successors, (1435), 662 states have internal predecessors, (1435), 0 states have call successors, (0), 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 18:42:55,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 663 states, 616 states have (on average 2.3295454545454546) internal successors, (1435), 662 states have internal predecessors, (1435), 0 states have call successors, (0), 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 18:42:55,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-04-18 18:42:55,587 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:42:55,587 INFO L499 BasicCegarLoop]: trace histogram [1, 1] [2022-04-18 18:42:55,588 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-04-18 18:42:55,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:42:55,591 INFO L85 PathProgramCache]: Analyzing trace with hash 18229, now seen corresponding path program 1 times [2022-04-18 18:42:55,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:42:55,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838330712] [2022-04-18 18:42:55,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:42:55,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:42:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:42:55,697 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 18:42:55,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:42:55,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838330712] [2022-04-18 18:42:55,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838330712] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:42:55,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:42:55,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 18:42:55,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063334904] [2022-04-18 18:42:55,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:42:55,703 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 18:42:55,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:42:55,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 18:42:55,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:42:55,725 INFO L87 Difference]: Start difference. First operand has 663 states, 616 states have (on average 2.3295454545454546) internal successors, (1435), 662 states have internal predecessors, (1435), 0 states have call successors, (0), 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 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 18:42:55,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:42:55,787 INFO L93 Difference]: Finished difference Result 522 states and 982 transitions. [2022-04-18 18:42:55,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 18:42:55,789 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-04-18 18:42:55,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:42:55,802 INFO L225 Difference]: With dead ends: 522 [2022-04-18 18:42:55,803 INFO L226 Difference]: Without dead ends: 516 [2022-04-18 18:42:55,803 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 18:42:55,806 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 18:42:55,806 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 18:42:55,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-04-18 18:42:55,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2022-04-18 18:42:55,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 501 states have (on average 1.93812375249501) internal successors, (971), 515 states have internal predecessors, (971), 0 states have call successors, (0), 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 18:42:55,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 971 transitions. [2022-04-18 18:42:55,853 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 971 transitions. Word has length 2 [2022-04-18 18:42:55,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:42:55,854 INFO L478 AbstractCegarLoop]: Abstraction has 516 states and 971 transitions. [2022-04-18 18:42:55,854 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 18:42:55,854 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 971 transitions. [2022-04-18 18:42:55,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 18:42:55,854 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:42:55,854 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-04-18 18:42:55,855 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 18:42:55,855 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-04-18 18:42:55,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:42:55,856 INFO L85 PathProgramCache]: Analyzing trace with hash -341332758, now seen corresponding path program 1 times [2022-04-18 18:42:55,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:42:55,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945068325] [2022-04-18 18:42:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:42:55,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:42:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:42:55,882 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 18:42:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:42:55,922 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 18:42:55,923 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 18:42:55,925 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-04-18 18:42:55,926 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-04-18 18:42:55,926 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-04-18 18:42:55,926 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-04-18 18:42:55,927 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-04-18 18:42:55,927 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-04-18 18:42:55,927 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-04-18 18:42:55,927 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-04-18 18:42:55,927 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-04-18 18:42:55,928 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-04-18 18:42:55,928 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-04-18 18:42:55,928 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-04-18 18:42:55,928 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-04-18 18:42:55,928 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-04-18 18:42:55,928 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-04-18 18:42:55,929 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-04-18 18:42:55,929 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-04-18 18:42:55,929 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 18:42:55,931 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 18:42:55,938 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 18:42:55,938 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 18:42:55,957 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 18:42:55,959 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:42:55,959 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 18:42:55,960 INFO L341 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-04-18 18:42:55,961 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:42:55,961 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 220 transitions, 452 flow [2022-04-18 18:42:55,962 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 220 transitions, 452 flow [2022-04-18 18:42:55,962 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 209 places, 220 transitions, 452 flow [2022-04-18 18:42:56,012 INFO L129 PetriNetUnfolder]: 24/319 cut-off events. [2022-04-18 18:42:56,012 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 18:42:56,015 INFO L84 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 319 events. 24/319 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1193 event pairs, 0 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 201. Up to 6 conditions per place. [2022-04-18 18:42:56,027 INFO L116 LiptonReduction]: Number of co-enabled transitions 22836 [2022-04-18 18:42:59,626 INFO L131 LiptonReduction]: Checked pairs total: 179479 [2022-04-18 18:42:59,627 INFO L133 LiptonReduction]: Total number of compositions: 200 [2022-04-18 18:42:59,628 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 109 transitions, 230 flow [2022-04-18 18:43:00,278 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 28134 states, 27800 states have (on average 3.3278057553956835) internal successors, (92513), 28133 states have internal predecessors, (92513), 0 states have call successors, (0), 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 18:43:00,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 28134 states, 27800 states have (on average 3.3278057553956835) internal successors, (92513), 28133 states have internal predecessors, (92513), 0 states have call successors, (0), 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 18:43:00,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-04-18 18:43:00,346 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:43:00,346 INFO L499 BasicCegarLoop]: trace histogram [1, 1] [2022-04-18 18:43:00,347 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-04-18 18:43:00,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:43:00,348 INFO L85 PathProgramCache]: Analyzing trace with hash 33132, now seen corresponding path program 1 times [2022-04-18 18:43:00,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:43:00,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362140660] [2022-04-18 18:43:00,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:43:00,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:43:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:43:00,393 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 18:43:00,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:43:00,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362140660] [2022-04-18 18:43:00,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362140660] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:43:00,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:43:00,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 18:43:00,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041697312] [2022-04-18 18:43:00,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:43:00,395 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 18:43:00,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:43:00,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 18:43:00,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:43:00,452 INFO L87 Difference]: Start difference. First operand has 28134 states, 27800 states have (on average 3.3278057553956835) internal successors, (92513), 28133 states have internal predecessors, (92513), 0 states have call successors, (0), 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 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 18:43:00,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:43:00,811 INFO L93 Difference]: Finished difference Result 21287 states and 60833 transitions. [2022-04-18 18:43:00,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 18:43:00,812 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-04-18 18:43:00,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:43:00,916 INFO L225 Difference]: With dead ends: 21287 [2022-04-18 18:43:00,916 INFO L226 Difference]: Without dead ends: 21264 [2022-04-18 18:43:00,917 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 18:43:00,921 INFO L913 BasicCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 18:43:00,925 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 18:43:00,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21264 states. [2022-04-18 18:43:01,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21264 to 21264. [2022-04-18 18:43:01,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21264 states, 21180 states have (on average 2.8692634560906516) internal successors, (60771), 21263 states have internal predecessors, (60771), 0 states have call successors, (0), 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 18:43:01,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21264 states to 21264 states and 60771 transitions. [2022-04-18 18:43:01,816 INFO L78 Accepts]: Start accepts. Automaton has 21264 states and 60771 transitions. Word has length 2 [2022-04-18 18:43:01,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:43:01,816 INFO L478 AbstractCegarLoop]: Abstraction has 21264 states and 60771 transitions. [2022-04-18 18:43:01,816 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 18:43:01,816 INFO L276 IsEmpty]: Start isEmpty. Operand 21264 states and 60771 transitions. [2022-04-18 18:43:01,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-04-18 18:43:01,818 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:43:01,818 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:43:01,818 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 18:43:01,819 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-04-18 18:43:01,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:43:01,820 INFO L85 PathProgramCache]: Analyzing trace with hash 182708312, now seen corresponding path program 1 times [2022-04-18 18:43:01,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:43:01,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121643197] [2022-04-18 18:43:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:43:01,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:43:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:43:01,871 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 18:43:01,872 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:43:01,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121643197] [2022-04-18 18:43:01,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121643197] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:43:01,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:43:01,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:43:01,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351713225] [2022-04-18 18:43:01,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:43:01,873 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:43:01,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:43:01,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:43:01,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:43:01,874 INFO L87 Difference]: Start difference. First operand 21264 states and 60771 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 18:43:02,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:43:02,180 INFO L93 Difference]: Finished difference Result 21255 states and 60762 transitions. [2022-04-18 18:43:02,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:43:02,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-04-18 18:43:02,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:43:02,237 INFO L225 Difference]: With dead ends: 21255 [2022-04-18 18:43:02,237 INFO L226 Difference]: Without dead ends: 21255 [2022-04-18 18:43:02,238 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 18:43:02,243 INFO L913 BasicCegarLoop]: 49 mSDtfsCounter, 38 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 18:43:02,243 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 98 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 18:43:02,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21255 states. [2022-04-18 18:43:02,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21255 to 21255. [2022-04-18 18:43:02,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21255 states, 21172 states have (on average 2.8699225392027206) internal successors, (60762), 21254 states have internal predecessors, (60762), 0 states have call successors, (0), 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 18:43:03,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21255 states to 21255 states and 60762 transitions. [2022-04-18 18:43:03,037 INFO L78 Accepts]: Start accepts. Automaton has 21255 states and 60762 transitions. Word has length 10 [2022-04-18 18:43:03,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:43:03,037 INFO L478 AbstractCegarLoop]: Abstraction has 21255 states and 60762 transitions. [2022-04-18 18:43:03,037 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 18:43:03,037 INFO L276 IsEmpty]: Start isEmpty. Operand 21255 states and 60762 transitions. [2022-04-18 18:43:03,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-18 18:43:03,038 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:43:03,038 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-04-18 18:43:03,039 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 18:43:03,039 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-04-18 18:43:03,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:43:03,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1922065728, now seen corresponding path program 1 times [2022-04-18 18:43:03,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:43:03,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013438136] [2022-04-18 18:43:03,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:43:03,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:43:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:43:03,052 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 18:43:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:43:03,077 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 18:43:03,077 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 18:43:03,077 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2022-04-18 18:43:03,078 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2022-04-18 18:43:03,078 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2022-04-18 18:43:03,078 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2022-04-18 18:43:03,078 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2022-04-18 18:43:03,078 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2022-04-18 18:43:03,078 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2022-04-18 18:43:03,079 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2022-04-18 18:43:03,079 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2022-04-18 18:43:03,079 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2022-04-18 18:43:03,079 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2022-04-18 18:43:03,079 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2022-04-18 18:43:03,079 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2022-04-18 18:43:03,080 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2022-04-18 18:43:03,080 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2022-04-18 18:43:03,080 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2022-04-18 18:43:03,080 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2022-04-18 18:43:03,080 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2022-04-18 18:43:03,080 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2022-04-18 18:43:03,081 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2022-04-18 18:43:03,081 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2022-04-18 18:43:03,081 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2022-04-18 18:43:03,081 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2022-04-18 18:43:03,081 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 18:43:03,082 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 18:43:03,082 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 18:43:03,082 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 18:43:03,102 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 18:43:03,110 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:43:03,110 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 18:43:03,110 INFO L341 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-04-18 18:43:03,112 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:43:03,118 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 272 places, 287 transitions, 595 flow [2022-04-18 18:43:03,118 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 272 places, 287 transitions, 595 flow [2022-04-18 18:43:03,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 272 places, 287 transitions, 595 flow [2022-04-18 18:43:03,176 INFO L129 PetriNetUnfolder]: 34/438 cut-off events. [2022-04-18 18:43:03,176 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 18:43:03,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 438 events. 34/438 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1845 event pairs, 0 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 323. Up to 8 conditions per place. [2022-04-18 18:43:03,206 INFO L116 LiptonReduction]: Number of co-enabled transitions 47520 [2022-04-18 18:43:08,841 INFO L131 LiptonReduction]: Checked pairs total: 433570 [2022-04-18 18:43:08,841 INFO L133 LiptonReduction]: Total number of compositions: 260 [2022-04-18 18:43:08,842 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 140 places, 153 transitions, 327 flow [2022-04-18 18:43:36,485 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1069257 states, 1066914 states have (on average 4.429523841659215) internal successors, (4725921), 1069256 states have internal predecessors, (4725921), 0 states have call successors, (0), 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 18:43:38,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 1069257 states, 1066914 states have (on average 4.429523841659215) internal successors, (4725921), 1069256 states have internal predecessors, (4725921), 0 states have call successors, (0), 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 18:43:38,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-04-18 18:43:38,594 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:43:38,594 INFO L499 BasicCegarLoop]: trace histogram [1, 1] [2022-04-18 18:43:38,594 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 18:43:38,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:43:38,597 INFO L85 PathProgramCache]: Analyzing trace with hash 51978, now seen corresponding path program 1 times [2022-04-18 18:43:38,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:43:38,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488519678] [2022-04-18 18:43:38,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:43:38,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:43:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:43:38,617 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 18:43:38,618 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:43:38,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488519678] [2022-04-18 18:43:38,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488519678] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:43:38,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:43:38,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 18:43:38,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277289594] [2022-04-18 18:43:38,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:43:38,619 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 18:43:38,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:43:38,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 18:43:38,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:43:40,656 INFO L87 Difference]: Start difference. First operand has 1069257 states, 1066914 states have (on average 4.429523841659215) internal successors, (4725921), 1069256 states have internal predecessors, (4725921), 0 states have call successors, (0), 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 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)