./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.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-ext/27_Boop_simple_vf.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 ce64fcfa63b9df647c320ea90e20b624e2dad5b9ca256083b6d2f56c3177560a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 19:14:15,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 19:14:15,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 19:14:15,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 19:14:15,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 19:14:15,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 19:14:15,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 19:14:15,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 19:14:15,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 19:14:15,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 19:14:15,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 19:14:15,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 19:14:15,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 19:14:15,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 19:14:15,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 19:14:15,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 19:14:15,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 19:14:15,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 19:14:15,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 19:14:15,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 19:14:15,654 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 19:14:15,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 19:14:15,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 19:14:15,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 19:14:15,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 19:14:15,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 19:14:15,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 19:14:15,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 19:14:15,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 19:14:15,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 19:14:15,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 19:14:15,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 19:14:15,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 19:14:15,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 19:14:15,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 19:14:15,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 19:14:15,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 19:14:15,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 19:14:15,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 19:14:15,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 19:14:15,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 19:14:15,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 19:14:15,673 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 19:14:15,704 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 19:14:15,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 19:14:15,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 19:14:15,705 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 19:14:15,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 19:14:15,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 19:14:15,706 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 19:14:15,706 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 19:14:15,706 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 19:14:15,707 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 19:14:15,707 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 19:14:15,707 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 19:14:15,707 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 19:14:15,707 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 19:14:15,708 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 19:14:15,708 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 19:14:15,708 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 19:14:15,708 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 19:14:15,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 19:14:15,710 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 19:14:15,711 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 19:14:15,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 19:14:15,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 19:14:15,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 19:14:15,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 19:14:15,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 19:14:15,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 19:14:15,713 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 19:14:15,713 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 19:14:15,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 19:14:15,713 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 19:14:15,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 19:14:15,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 19:14:15,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 19:14:15,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:14:15,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 19:14:15,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 19:14:15,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 19:14:15,715 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 19:14:15,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 19:14:15,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 19:14:15,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 19:14:15,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 19:14:15,716 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce64fcfa63b9df647c320ea90e20b624e2dad5b9ca256083b6d2f56c3177560a [2022-04-18 19:14:15,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 19:14:15,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 19:14:15,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 19:14:15,932 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 19:14:15,933 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 19:14:15,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.i [2022-04-18 19:14:15,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b4886e069/36e84327317f4b45b33c93b87fde8819/FLAG8d68362e5 [2022-04-18 19:14:16,415 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 19:14:16,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/27_Boop_simple_vf.i [2022-04-18 19:14:16,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b4886e069/36e84327317f4b45b33c93b87fde8819/FLAG8d68362e5 [2022-04-18 19:14:16,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b4886e069/36e84327317f4b45b33c93b87fde8819 [2022-04-18 19:14:16,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 19:14:16,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 19:14:16,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 19:14:16,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 19:14:16,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 19:14:16,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:14:16" (1/1) ... [2022-04-18 19:14:16,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd65b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:16, skipping insertion in model container [2022-04-18 19:14:16,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:14:16" (1/1) ... [2022-04-18 19:14:16,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 19:14:16,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 19:14:16,785 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-ext/27_Boop_simple_vf.i[30297,30310] [2022-04-18 19:14:16,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:14:16,803 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 19:14:16,847 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-ext/27_Boop_simple_vf.i[30297,30310] [2022-04-18 19:14:16,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:14:16,876 INFO L208 MainTranslator]: Completed translation [2022-04-18 19:14:16,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:16 WrapperNode [2022-04-18 19:14:16,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 19:14:16,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 19:14:16,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 19:14:16,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 19:14:16,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:16" (1/1) ... [2022-04-18 19:14:16,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:16" (1/1) ... [2022-04-18 19:14:16,920 INFO L137 Inliner]: procedures = 170, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 108 [2022-04-18 19:14:16,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 19:14:16,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 19:14:16,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 19:14:16,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 19:14:16,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:16" (1/1) ... [2022-04-18 19:14:16,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:16" (1/1) ... [2022-04-18 19:14:16,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:16" (1/1) ... [2022-04-18 19:14:16,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:16" (1/1) ... [2022-04-18 19:14:16,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:16" (1/1) ... [2022-04-18 19:14:16,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:16" (1/1) ... [2022-04-18 19:14:16,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:16" (1/1) ... [2022-04-18 19:14:16,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 19:14:16,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 19:14:16,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 19:14:16,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 19:14:16,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:16" (1/1) ... [2022-04-18 19:14:16,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:14:16,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:14:16,979 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 19:14:16,981 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 19:14:17,006 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-04-18 19:14:17,006 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-04-18 19:14:17,007 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 19:14:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 19:14:17,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 19:14:17,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 19:14:17,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 19:14:17,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 19:14:17,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 19:14:17,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 19:14:17,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 19:14:17,009 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 19:14:17,097 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 19:14:17,098 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 19:14:17,293 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 19:14:17,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 19:14:17,301 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-04-18 19:14:17,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:14:17 BoogieIcfgContainer [2022-04-18 19:14:17,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 19:14:17,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 19:14:17,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 19:14:17,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 19:14:17,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:14:16" (1/3) ... [2022-04-18 19:14:17,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78339206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:14:17, skipping insertion in model container [2022-04-18 19:14:17,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:14:16" (2/3) ... [2022-04-18 19:14:17,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78339206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:14:17, skipping insertion in model container [2022-04-18 19:14:17,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:14:17" (3/3) ... [2022-04-18 19:14:17,326 INFO L111 eAbstractionObserver]: Analyzing ICFG 27_Boop_simple_vf.i [2022-04-18 19:14:17,331 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 19:14:17,331 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 19:14:17,331 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-04-18 19:14:17,331 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 19:14:17,388 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:14:17,424 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:14:17,434 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 19:14:17,435 INFO L341 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-04-18 19:14:17,451 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:14:17,466 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 163 transitions, 336 flow [2022-04-18 19:14:17,471 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 163 transitions, 336 flow [2022-04-18 19:14:17,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 157 places, 163 transitions, 336 flow [2022-04-18 19:14:17,550 INFO L129 PetriNetUnfolder]: 13/173 cut-off events. [2022-04-18 19:14:17,551 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 19:14:17,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 173 events. 13/173 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 362 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 154. Up to 4 conditions per place. [2022-04-18 19:14:17,565 INFO L116 LiptonReduction]: Number of co-enabled transitions 10230 [2022-04-18 19:14:19,412 INFO L131 LiptonReduction]: Checked pairs total: 60253 [2022-04-18 19:14:19,412 INFO L133 LiptonReduction]: Total number of compositions: 114 [2022-04-18 19:14:19,430 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 80 transitions, 170 flow [2022-04-18 19:14:19,619 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4877 states, 4699 states have (on average 3.090657586720579) internal successors, (14523), 4876 states have internal predecessors, (14523), 0 states have call successors, (0), 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 19:14:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 4877 states, 4699 states have (on average 3.090657586720579) internal successors, (14523), 4876 states have internal predecessors, (14523), 0 states have call successors, (0), 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 19:14:19,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-04-18 19:14:19,637 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:14:19,638 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-04-18 19:14:19,639 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-04-18 19:14:19,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:14:19,644 INFO L85 PathProgramCache]: Analyzing trace with hash 605736049, now seen corresponding path program 1 times [2022-04-18 19:14:19,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:14:19,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687747971] [2022-04-18 19:14:19,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:14:19,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:14:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:14:19,803 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 19:14:19,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:14:19,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687747971] [2022-04-18 19:14:19,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687747971] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:14:19,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:14:19,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:14:19,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098546957] [2022-04-18 19:14:19,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:14:19,810 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:14:19,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:14:19,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:14:19,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:14:19,842 INFO L87 Difference]: Start difference. First operand has 4877 states, 4699 states have (on average 3.090657586720579) internal successors, (14523), 4876 states have internal predecessors, (14523), 0 states have call successors, (0), 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 19:14:20,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:14:20,041 INFO L93 Difference]: Finished difference Result 3946 states and 11108 transitions. [2022-04-18 19:14:20,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:14:20,054 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 19:14:20,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:14:20,091 INFO L225 Difference]: With dead ends: 3946 [2022-04-18 19:14:20,091 INFO L226 Difference]: Without dead ends: 3946 [2022-04-18 19:14:20,092 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 19:14:20,096 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 27 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 19:14:20,097 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 68 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 19:14:20,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2022-04-18 19:14:20,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3946. [2022-04-18 19:14:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3946 states, 3863 states have (on average 2.87548537406161) internal successors, (11108), 3945 states have internal predecessors, (11108), 0 states have call successors, (0), 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 19:14:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 11108 transitions. [2022-04-18 19:14:20,300 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 11108 transitions. Word has length 5 [2022-04-18 19:14:20,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:14:20,301 INFO L478 AbstractCegarLoop]: Abstraction has 3946 states and 11108 transitions. [2022-04-18 19:14:20,302 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 19:14:20,303 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 11108 transitions. [2022-04-18 19:14:20,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-04-18 19:14:20,304 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:14:20,304 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:14:20,304 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 19:14:20,305 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-04-18 19:14:20,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:14:20,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1965466509, now seen corresponding path program 1 times [2022-04-18 19:14:20,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:14:20,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487077708] [2022-04-18 19:14:20,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:14:20,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:14:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:14:20,367 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 19:14:20,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:14:20,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487077708] [2022-04-18 19:14:20,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487077708] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:14:20,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:14:20,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:14:20,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692591985] [2022-04-18 19:14:20,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:14:20,370 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:14:20,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:14:20,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:14:20,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:14:20,371 INFO L87 Difference]: Start difference. First operand 3946 states and 11108 transitions. Second operand has 3 states, 2 states have (on average 4.0) 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 19:14:20,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:14:20,505 INFO L93 Difference]: Finished difference Result 3983 states and 11208 transitions. [2022-04-18 19:14:20,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:14:20,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) 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 19:14:20,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:14:20,528 INFO L225 Difference]: With dead ends: 3983 [2022-04-18 19:14:20,529 INFO L226 Difference]: Without dead ends: 3983 [2022-04-18 19:14:20,530 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 19:14:20,531 INFO L913 BasicCegarLoop]: 45 mSDtfsCounter, 28 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 19:14:20,531 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 69 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 19:14:20,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2022-04-18 19:14:20,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3939. [2022-04-18 19:14:20,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 3859 states have (on average 2.8730240995076444) internal successors, (11087), 3938 states have internal predecessors, (11087), 0 states have call successors, (0), 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 19:14:20,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 11087 transitions. [2022-04-18 19:14:20,648 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 11087 transitions. Word has length 8 [2022-04-18 19:14:20,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:14:20,648 INFO L478 AbstractCegarLoop]: Abstraction has 3939 states and 11087 transitions. [2022-04-18 19:14:20,648 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) 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 19:14:20,648 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 11087 transitions. [2022-04-18 19:14:20,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-04-18 19:14:20,649 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:14:20,649 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-04-18 19:14:20,650 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 19:14:20,650 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-04-18 19:14:20,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:14:20,651 INFO L85 PathProgramCache]: Analyzing trace with hash -192290672, now seen corresponding path program 1 times [2022-04-18 19:14:20,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:14:20,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052600410] [2022-04-18 19:14:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:14:20,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:14:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:14:20,670 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:14:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:14:20,695 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:14:20,696 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:14:20,697 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2022-04-18 19:14:20,698 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2022-04-18 19:14:20,698 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2022-04-18 19:14:20,699 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2022-04-18 19:14:20,699 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2022-04-18 19:14:20,699 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2022-04-18 19:14:20,699 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2022-04-18 19:14:20,699 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2022-04-18 19:14:20,700 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2022-04-18 19:14:20,700 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2022-04-18 19:14:20,700 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2022-04-18 19:14:20,700 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2022-04-18 19:14:20,701 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2022-04-18 19:14:20,701 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2022-04-18 19:14:20,701 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2022-04-18 19:14:20,701 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2022-04-18 19:14:20,701 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2022-04-18 19:14:20,702 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2022-04-18 19:14:20,702 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 36 remaining) [2022-04-18 19:14:20,702 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2022-04-18 19:14:20,702 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2022-04-18 19:14:20,702 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2022-04-18 19:14:20,703 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2022-04-18 19:14:20,703 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2022-04-18 19:14:20,703 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2022-04-18 19:14:20,703 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2022-04-18 19:14:20,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2022-04-18 19:14:20,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2022-04-18 19:14:20,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2022-04-18 19:14:20,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2022-04-18 19:14:20,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2022-04-18 19:14:20,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2022-04-18 19:14:20,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2022-04-18 19:14:20,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2022-04-18 19:14:20,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2022-04-18 19:14:20,706 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2022-04-18 19:14:20,706 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 19:14:20,708 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 19:14:20,709 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:14:20,709 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 19:14:20,733 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:14:20,734 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:14:20,735 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 19:14:20,739 INFO L341 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-04-18 19:14:20,744 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:14:20,745 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 288 transitions, 600 flow [2022-04-18 19:14:20,746 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 288 transitions, 600 flow [2022-04-18 19:14:20,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 275 places, 288 transitions, 600 flow [2022-04-18 19:14:20,814 INFO L129 PetriNetUnfolder]: 17/223 cut-off events. [2022-04-18 19:14:20,814 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 19:14:20,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 223 events. 17/223 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 654 event pairs, 0 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 232. Up to 6 conditions per place. [2022-04-18 19:14:20,830 INFO L116 LiptonReduction]: Number of co-enabled transitions 20340 [2022-04-18 19:14:23,734 INFO L131 LiptonReduction]: Checked pairs total: 133201 [2022-04-18 19:14:23,734 INFO L133 LiptonReduction]: Total number of compositions: 234 [2022-04-18 19:14:23,735 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 123 places, 127 transitions, 278 flow [2022-04-18 19:14:27,854 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 146817 states, 145548 states have (on average 4.124027812130706) internal successors, (600244), 146816 states have internal predecessors, (600244), 0 states have call successors, (0), 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 19:14:28,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 146817 states, 145548 states have (on average 4.124027812130706) internal successors, (600244), 146816 states have internal predecessors, (600244), 0 states have call successors, (0), 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 19:14:28,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-04-18 19:14:28,157 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:14:28,157 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-04-18 19:14:28,157 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 19:14:28,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:14:28,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1215825043, now seen corresponding path program 1 times [2022-04-18 19:14:28,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:14:28,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641255689] [2022-04-18 19:14:28,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:14:28,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:14:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:14:28,215 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 19:14:28,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:14:28,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641255689] [2022-04-18 19:14:28,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641255689] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:14:28,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:14:28,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:14:28,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757634020] [2022-04-18 19:14:28,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:14:28,217 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:14:28,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:14:28,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:14:28,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:14:28,475 INFO L87 Difference]: Start difference. First operand has 146817 states, 145548 states have (on average 4.124027812130706) internal successors, (600244), 146816 states have internal predecessors, (600244), 0 states have call successors, (0), 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 19:14:30,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:14:30,377 INFO L93 Difference]: Finished difference Result 127695 states and 497983 transitions. [2022-04-18 19:14:30,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:14:30,380 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 19:14:30,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:14:31,792 INFO L225 Difference]: With dead ends: 127695 [2022-04-18 19:14:31,793 INFO L226 Difference]: Without dead ends: 127695 [2022-04-18 19:14:31,793 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 19:14:31,794 INFO L913 BasicCegarLoop]: 86 mSDtfsCounter, 55 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 19:14:31,794 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 126 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 19:14:32,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127695 states. [2022-04-18 19:14:36,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127695 to 124864. [2022-04-18 19:14:36,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124864 states, 124277 states have (on average 3.9194380295629925) internal successors, (487096), 124863 states have internal predecessors, (487096), 0 states have call successors, (0), 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 19:14:37,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124864 states to 124864 states and 487096 transitions. [2022-04-18 19:14:37,444 INFO L78 Accepts]: Start accepts. Automaton has 124864 states and 487096 transitions. Word has length 5 [2022-04-18 19:14:37,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:14:37,450 INFO L478 AbstractCegarLoop]: Abstraction has 124864 states and 487096 transitions. [2022-04-18 19:14:37,450 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 19:14:37,459 INFO L276 IsEmpty]: Start isEmpty. Operand 124864 states and 487096 transitions. [2022-04-18 19:14:37,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-04-18 19:14:37,469 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:14:37,469 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:14:37,469 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 19:14:37,470 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 19:14:37,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:14:37,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1185756409, now seen corresponding path program 1 times [2022-04-18 19:14:37,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:14:37,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454636362] [2022-04-18 19:14:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:14:37,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:14:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:14:37,507 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 19:14:37,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:14:37,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454636362] [2022-04-18 19:14:37,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454636362] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:14:37,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:14:37,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:14:37,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937893739] [2022-04-18 19:14:37,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:14:37,508 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:14:37,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:14:37,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:14:37,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:14:37,509 INFO L87 Difference]: Start difference. First operand 124864 states and 487096 transitions. Second operand has 3 states, 2 states have (on average 4.0) 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 19:14:38,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:14:38,940 INFO L93 Difference]: Finished difference Result 128508 states and 501028 transitions. [2022-04-18 19:14:38,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:14:38,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) 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 19:14:38,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:14:39,745 INFO L225 Difference]: With dead ends: 128508 [2022-04-18 19:14:39,746 INFO L226 Difference]: Without dead ends: 128508 [2022-04-18 19:14:39,746 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 19:14:39,747 INFO L913 BasicCegarLoop]: 86 mSDtfsCounter, 55 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 19:14:39,749 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 129 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 19:14:40,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128508 states. [2022-04-18 19:14:44,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128508 to 126300. [2022-04-18 19:14:44,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126300 states, 125722 states have (on average 3.917818679308315) internal successors, (492556), 126299 states have internal predecessors, (492556), 0 states have call successors, (0), 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 19:14:44,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126300 states to 126300 states and 492556 transitions. [2022-04-18 19:14:44,849 INFO L78 Accepts]: Start accepts. Automaton has 126300 states and 492556 transitions. Word has length 8 [2022-04-18 19:14:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:14:44,850 INFO L478 AbstractCegarLoop]: Abstraction has 126300 states and 492556 transitions. [2022-04-18 19:14:44,850 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) 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 19:14:44,850 INFO L276 IsEmpty]: Start isEmpty. Operand 126300 states and 492556 transitions. [2022-04-18 19:14:44,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-04-18 19:14:44,850 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:14:44,850 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:14:44,851 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 19:14:44,851 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 19:14:44,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:14:44,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1547424995, now seen corresponding path program 1 times [2022-04-18 19:14:44,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:14:44,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934328519] [2022-04-18 19:14:44,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:14:44,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:14:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:14:44,884 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 19:14:44,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:14:44,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934328519] [2022-04-18 19:14:44,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934328519] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:14:44,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:14:44,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:14:44,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946794571] [2022-04-18 19:14:44,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:14:44,886 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:14:44,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:14:44,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:14:44,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:14:44,886 INFO L87 Difference]: Start difference. First operand 126300 states and 492556 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 19:14:47,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:14:47,538 INFO L93 Difference]: Finished difference Result 215308 states and 835164 transitions. [2022-04-18 19:14:47,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:14:47,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-04-18 19:14:47,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:14:48,912 INFO L225 Difference]: With dead ends: 215308 [2022-04-18 19:14:48,912 INFO L226 Difference]: Without dead ends: 215308 [2022-04-18 19:14:48,913 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 19:14:48,913 INFO L913 BasicCegarLoop]: 79 mSDtfsCounter, 93 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 19:14:48,913 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 127 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 19:14:49,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215308 states. [2022-04-18 19:14:53,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215308 to 131177. [2022-04-18 19:14:54,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131177 states, 130619 states have (on average 3.970838851928127) internal successors, (518667), 131176 states have internal predecessors, (518667), 0 states have call successors, (0), 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 19:14:55,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131177 states to 131177 states and 518667 transitions. [2022-04-18 19:14:55,456 INFO L78 Accepts]: Start accepts. Automaton has 131177 states and 518667 transitions. Word has length 9 [2022-04-18 19:14:55,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:14:55,457 INFO L478 AbstractCegarLoop]: Abstraction has 131177 states and 518667 transitions. [2022-04-18 19:14:55,457 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 19:14:55,457 INFO L276 IsEmpty]: Start isEmpty. Operand 131177 states and 518667 transitions. [2022-04-18 19:14:55,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-18 19:14:55,459 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:14:55,459 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:14:55,460 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 19:14:55,460 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 19:14:55,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:14:55,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1016771352, now seen corresponding path program 1 times [2022-04-18 19:14:55,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:14:55,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315419720] [2022-04-18 19:14:55,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:14:55,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:14:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:14:55,510 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 19:14:55,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:14:55,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315419720] [2022-04-18 19:14:55,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315419720] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:14:55,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:14:55,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:14:55,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144643124] [2022-04-18 19:14:55,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:14:55,512 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:14:55,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:14:55,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:14:55,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:14:55,513 INFO L87 Difference]: Start difference. First operand 131177 states and 518667 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 19:14:57,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:14:57,318 INFO L93 Difference]: Finished difference Result 139074 states and 555750 transitions. [2022-04-18 19:14:57,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:14:57,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-04-18 19:14:57,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:14:58,237 INFO L225 Difference]: With dead ends: 139074 [2022-04-18 19:14:58,238 INFO L226 Difference]: Without dead ends: 139074 [2022-04-18 19:14:58,238 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 19:14:58,239 INFO L913 BasicCegarLoop]: 96 mSDtfsCounter, 89 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 19:14:58,239 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 148 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 19:14:58,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139074 states. [2022-04-18 19:15:02,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139074 to 133029. [2022-04-18 19:15:02,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133029 states, 132389 states have (on average 4.068230744246123) internal successors, (538589), 133028 states have internal predecessors, (538589), 0 states have call successors, (0), 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 19:15:03,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133029 states to 133029 states and 538589 transitions. [2022-04-18 19:15:03,290 INFO L78 Accepts]: Start accepts. Automaton has 133029 states and 538589 transitions. Word has length 11 [2022-04-18 19:15:03,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:15:03,290 INFO L478 AbstractCegarLoop]: Abstraction has 133029 states and 538589 transitions. [2022-04-18 19:15:03,290 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 19:15:03,290 INFO L276 IsEmpty]: Start isEmpty. Operand 133029 states and 538589 transitions. [2022-04-18 19:15:03,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-18 19:15:03,291 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:15:03,291 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:15:03,292 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 19:15:03,292 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 49 more)] === [2022-04-18 19:15:03,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:15:03,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1235721418, now seen corresponding path program 1 times [2022-04-18 19:15:03,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:15:03,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770946813] [2022-04-18 19:15:03,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:15:03,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:15:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:15:03,328 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 19:15:03,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:15:03,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770946813] [2022-04-18 19:15:03,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770946813] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:15:03,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:15:03,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:15:03,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393922437] [2022-04-18 19:15:03,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:15:03,330 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:15:03,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:15:03,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:15:03,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:15:03,330 INFO L87 Difference]: Start difference. First operand 133029 states and 538589 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)