./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/31_simple_loop5_vs.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/31_simple_loop5_vs.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 3ace826ce717f8420bd44e3ebb10a0f5689c8f1d5dcaf8399a3f9b8d8dda146f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 19:16:39,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 19:16:39,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 19:16:39,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 19:16:39,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 19:16:39,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 19:16:40,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 19:16:40,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 19:16:40,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 19:16:40,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 19:16:40,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 19:16:40,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 19:16:40,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 19:16:40,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 19:16:40,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 19:16:40,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 19:16:40,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 19:16:40,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 19:16:40,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 19:16:40,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 19:16:40,024 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 19:16:40,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 19:16:40,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 19:16:40,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 19:16:40,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 19:16:40,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 19:16:40,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 19:16:40,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 19:16:40,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 19:16:40,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 19:16:40,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 19:16:40,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 19:16:40,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 19:16:40,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 19:16:40,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 19:16:40,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 19:16:40,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 19:16:40,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 19:16:40,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 19:16:40,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 19:16:40,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 19:16:40,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 19:16:40,048 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 19:16:40,080 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 19:16:40,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 19:16:40,081 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 19:16:40,082 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 19:16:40,082 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 19:16:40,082 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 19:16:40,083 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 19:16:40,083 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 19:16:40,083 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 19:16:40,084 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 19:16:40,084 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 19:16:40,084 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 19:16:40,085 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 19:16:40,085 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 19:16:40,085 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 19:16:40,085 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 19:16:40,085 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 19:16:40,085 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 19:16:40,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 19:16:40,087 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 19:16:40,088 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 19:16:40,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 19:16:40,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 19:16:40,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 19:16:40,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 19:16:40,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 19:16:40,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 19:16:40,089 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 19:16:40,089 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 19:16:40,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 19:16:40,090 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 19:16:40,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 19:16:40,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 19:16:40,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 19:16:40,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:16:40,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 19:16:40,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 19:16:40,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 19:16:40,091 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 19:16:40,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 19:16:40,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 19:16:40,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 19:16:40,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 19:16:40,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ace826ce717f8420bd44e3ebb10a0f5689c8f1d5dcaf8399a3f9b8d8dda146f [2022-04-18 19:16:40,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 19:16:40,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 19:16:40,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 19:16:40,346 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 19:16:40,346 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 19:16:40,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/31_simple_loop5_vs.i [2022-04-18 19:16:40,400 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e2824bebe/5e013e158a1f4c92a6360de6a3d0b1c8/FLAGf8cedf3f6 [2022-04-18 19:16:40,814 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 19:16:40,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/31_simple_loop5_vs.i [2022-04-18 19:16:40,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e2824bebe/5e013e158a1f4c92a6360de6a3d0b1c8/FLAGf8cedf3f6 [2022-04-18 19:16:40,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e2824bebe/5e013e158a1f4c92a6360de6a3d0b1c8 [2022-04-18 19:16:40,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 19:16:40,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 19:16:40,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 19:16:40,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 19:16:40,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 19:16:40,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:16:40" (1/1) ... [2022-04-18 19:16:40,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43027b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:40, skipping insertion in model container [2022-04-18 19:16:40,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:16:40" (1/1) ... [2022-04-18 19:16:40,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 19:16:40,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 19:16:41,148 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/31_simple_loop5_vs.i[30438,30451] [2022-04-18 19:16:41,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:16:41,164 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 19:16:41,218 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/31_simple_loop5_vs.i[30438,30451] [2022-04-18 19:16:41,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:16:41,257 INFO L208 MainTranslator]: Completed translation [2022-04-18 19:16:41,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:41 WrapperNode [2022-04-18 19:16:41,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 19:16:41,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 19:16:41,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 19:16:41,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 19:16:41,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:41" (1/1) ... [2022-04-18 19:16:41,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:41" (1/1) ... [2022-04-18 19:16:41,331 INFO L137 Inliner]: procedures = 170, calls = 18, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 135 [2022-04-18 19:16:41,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 19:16:41,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 19:16:41,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 19:16:41,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 19:16:41,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:41" (1/1) ... [2022-04-18 19:16:41,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:41" (1/1) ... [2022-04-18 19:16:41,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:41" (1/1) ... [2022-04-18 19:16:41,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:41" (1/1) ... [2022-04-18 19:16:41,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:41" (1/1) ... [2022-04-18 19:16:41,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:41" (1/1) ... [2022-04-18 19:16:41,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:41" (1/1) ... [2022-04-18 19:16:41,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 19:16:41,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 19:16:41,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 19:16:41,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 19:16:41,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:41" (1/1) ... [2022-04-18 19:16:41,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:16:41,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:16:41,410 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 19:16:41,423 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 19:16:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-04-18 19:16:41,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-04-18 19:16:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 19:16:41,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 19:16:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 19:16:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 19:16:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 19:16:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 19:16:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 19:16:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 19:16:41,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 19:16:41,442 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 19:16:41,564 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 19:16:41,572 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 19:16:41,750 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 19:16:41,802 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 19:16:41,802 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-18 19:16:41,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:16:41 BoogieIcfgContainer [2022-04-18 19:16:41,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 19:16:41,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 19:16:41,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 19:16:41,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 19:16:41,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:16:40" (1/3) ... [2022-04-18 19:16:41,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729e4fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:16:41, skipping insertion in model container [2022-04-18 19:16:41,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:16:41" (2/3) ... [2022-04-18 19:16:41,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729e4fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:16:41, skipping insertion in model container [2022-04-18 19:16:41,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:16:41" (3/3) ... [2022-04-18 19:16:41,816 INFO L111 eAbstractionObserver]: Analyzing ICFG 31_simple_loop5_vs.i [2022-04-18 19:16:41,820 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 19:16:41,820 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 19:16:41,820 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-04-18 19:16:41,821 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 19:16:41,882 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:16:41,923 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:16:41,928 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 19:16:41,928 INFO L341 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-04-18 19:16:41,938 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:16:41,948 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 110 transitions, 230 flow [2022-04-18 19:16:41,950 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 110 transitions, 230 flow [2022-04-18 19:16:41,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 110 places, 110 transitions, 230 flow [2022-04-18 19:16:41,987 INFO L129 PetriNetUnfolder]: 7/120 cut-off events. [2022-04-18 19:16:41,988 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 19:16:41,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 120 events. 7/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 189 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 101. Up to 4 conditions per place. [2022-04-18 19:16:41,998 INFO L116 LiptonReduction]: Number of co-enabled transitions 4204 [2022-04-18 19:16:43,652 INFO L131 LiptonReduction]: Checked pairs total: 15844 [2022-04-18 19:16:43,653 INFO L133 LiptonReduction]: Total number of compositions: 130 [2022-04-18 19:16:43,660 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 48 transitions, 106 flow [2022-04-18 19:16:43,759 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1785 states, 1598 states have (on average 3.1702127659574466) internal successors, (5066), 1784 states have internal predecessors, (5066), 0 states have call successors, (0), 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 19:16:43,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 1785 states, 1598 states have (on average 3.1702127659574466) internal successors, (5066), 1784 states have internal predecessors, (5066), 0 states have call successors, (0), 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 19:16:43,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:16:43,768 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:16:43,769 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:16:43,769 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 19:16:43,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:16:43,773 INFO L85 PathProgramCache]: Analyzing trace with hash 18686144, now seen corresponding path program 1 times [2022-04-18 19:16:43,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:16:43,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277500723] [2022-04-18 19:16:43,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:16:43,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:16:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:16:43,900 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 19:16:43,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:16:43,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277500723] [2022-04-18 19:16:43,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277500723] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:16:43,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:16:43,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 19:16:43,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090016383] [2022-04-18 19:16:43,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:16:43,906 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:16:43,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:16:43,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:16:43,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:16:43,929 INFO L87 Difference]: Start difference. First operand has 1785 states, 1598 states have (on average 3.1702127659574466) internal successors, (5066), 1784 states have internal predecessors, (5066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:16:43,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:16:43,974 INFO L93 Difference]: Finished difference Result 512 states and 1382 transitions. [2022-04-18 19:16:43,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:16:43,977 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-04-18 19:16:43,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:16:43,990 INFO L225 Difference]: With dead ends: 512 [2022-04-18 19:16:43,990 INFO L226 Difference]: Without dead ends: 512 [2022-04-18 19:16:43,991 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:16:43,993 INFO L913 BasicCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:16:43,994 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:16:44,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-04-18 19:16:44,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2022-04-18 19:16:44,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 508 states have (on average 2.720472440944882) internal successors, (1382), 511 states have internal predecessors, (1382), 0 states have call successors, (0), 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 19:16:44,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 1382 transitions. [2022-04-18 19:16:44,067 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 1382 transitions. Word has length 4 [2022-04-18 19:16:44,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:16:44,067 INFO L478 AbstractCegarLoop]: Abstraction has 512 states and 1382 transitions. [2022-04-18 19:16:44,067 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:16:44,068 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 1382 transitions. [2022-04-18 19:16:44,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 19:16:44,068 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:16:44,068 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-04-18 19:16:44,069 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 19:16:44,069 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 19:16:44,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:16:44,070 INFO L85 PathProgramCache]: Analyzing trace with hash 777531266, now seen corresponding path program 1 times [2022-04-18 19:16:44,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:16:44,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761341595] [2022-04-18 19:16:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:16:44,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:16:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:16:44,126 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 19:16:44,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:16:44,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761341595] [2022-04-18 19:16:44,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761341595] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:16:44,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:16:44,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:16:44,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315500380] [2022-04-18 19:16:44,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:16:44,136 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:16:44,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:16:44,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:16:44,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:16:44,137 INFO L87 Difference]: Start difference. First operand 512 states and 1382 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 19:16:44,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:16:44,184 INFO L93 Difference]: Finished difference Result 807 states and 2183 transitions. [2022-04-18 19:16:44,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:16:44,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-04-18 19:16:44,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:16:44,190 INFO L225 Difference]: With dead ends: 807 [2022-04-18 19:16:44,190 INFO L226 Difference]: Without dead ends: 807 [2022-04-18 19:16:44,190 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 19:16:44,191 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 23 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:16:44,192 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 29 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:16:44,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-04-18 19:16:44,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 541. [2022-04-18 19:16:44,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 537 states have (on average 2.711359404096834) internal successors, (1456), 540 states have internal predecessors, (1456), 0 states have call successors, (0), 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 19:16:44,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 1456 transitions. [2022-04-18 19:16:44,218 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 1456 transitions. Word has length 6 [2022-04-18 19:16:44,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:16:44,219 INFO L478 AbstractCegarLoop]: Abstraction has 541 states and 1456 transitions. [2022-04-18 19:16:44,219 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 19:16:44,219 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1456 transitions. [2022-04-18 19:16:44,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-04-18 19:16:44,220 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:16:44,220 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-04-18 19:16:44,220 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 19:16:44,220 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-04-18 19:16:44,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:16:44,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1229293846, now seen corresponding path program 1 times [2022-04-18 19:16:44,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:16:44,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111024342] [2022-04-18 19:16:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:16:44,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:16:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:16:44,242 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:16:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:16:44,281 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:16:44,281 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:16:44,282 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 38 remaining) [2022-04-18 19:16:44,284 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (36 of 38 remaining) [2022-04-18 19:16:44,284 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (35 of 38 remaining) [2022-04-18 19:16:44,284 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (34 of 38 remaining) [2022-04-18 19:16:44,284 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (33 of 38 remaining) [2022-04-18 19:16:44,285 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (32 of 38 remaining) [2022-04-18 19:16:44,285 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (31 of 38 remaining) [2022-04-18 19:16:44,285 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (30 of 38 remaining) [2022-04-18 19:16:44,285 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (29 of 38 remaining) [2022-04-18 19:16:44,286 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (28 of 38 remaining) [2022-04-18 19:16:44,286 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (27 of 38 remaining) [2022-04-18 19:16:44,286 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (26 of 38 remaining) [2022-04-18 19:16:44,286 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (25 of 38 remaining) [2022-04-18 19:16:44,287 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 38 remaining) [2022-04-18 19:16:44,287 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 38 remaining) [2022-04-18 19:16:44,287 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 38 remaining) [2022-04-18 19:16:44,287 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (21 of 38 remaining) [2022-04-18 19:16:44,287 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (20 of 38 remaining) [2022-04-18 19:16:44,288 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 38 remaining) [2022-04-18 19:16:44,288 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 38 remaining) [2022-04-18 19:16:44,288 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (17 of 38 remaining) [2022-04-18 19:16:44,288 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (16 of 38 remaining) [2022-04-18 19:16:44,289 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (15 of 38 remaining) [2022-04-18 19:16:44,289 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (14 of 38 remaining) [2022-04-18 19:16:44,289 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (13 of 38 remaining) [2022-04-18 19:16:44,289 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (12 of 38 remaining) [2022-04-18 19:16:44,290 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (11 of 38 remaining) [2022-04-18 19:16:44,290 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (10 of 38 remaining) [2022-04-18 19:16:44,290 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (9 of 38 remaining) [2022-04-18 19:16:44,290 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (8 of 38 remaining) [2022-04-18 19:16:44,291 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (7 of 38 remaining) [2022-04-18 19:16:44,291 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (6 of 38 remaining) [2022-04-18 19:16:44,291 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 38 remaining) [2022-04-18 19:16:44,291 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 38 remaining) [2022-04-18 19:16:44,292 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 38 remaining) [2022-04-18 19:16:44,292 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 38 remaining) [2022-04-18 19:16:44,292 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 38 remaining) [2022-04-18 19:16:44,292 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 38 remaining) [2022-04-18 19:16:44,292 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 19:16:44,294 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 19:16:44,308 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:16:44,308 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 19:16:44,328 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:16:44,330 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:16:44,331 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 19:16:44,331 INFO L341 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2022-04-18 19:16:44,333 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:16:44,334 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 182 transitions, 388 flow [2022-04-18 19:16:44,334 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 182 transitions, 388 flow [2022-04-18 19:16:44,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 181 places, 182 transitions, 388 flow [2022-04-18 19:16:44,366 INFO L129 PetriNetUnfolder]: 10/182 cut-off events. [2022-04-18 19:16:44,366 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 19:16:44,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 182 events. 10/182 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 399 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 191. Up to 6 conditions per place. [2022-04-18 19:16:44,376 INFO L116 LiptonReduction]: Number of co-enabled transitions 12408 [2022-04-18 19:16:47,358 INFO L131 LiptonReduction]: Checked pairs total: 202174 [2022-04-18 19:16:47,358 INFO L133 LiptonReduction]: Total number of compositions: 195 [2022-04-18 19:16:47,363 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 115 places, 109 transitions, 242 flow [2022-04-18 19:16:51,125 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 119414 states, 116953 states have (on average 3.893555530854275) internal successors, (455363), 119413 states have internal predecessors, (455363), 0 states have call successors, (0), 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 19:16:51,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 119414 states, 116953 states have (on average 3.893555530854275) internal successors, (455363), 119413 states have internal predecessors, (455363), 0 states have call successors, (0), 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 19:16:51,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 19:16:51,302 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:16:51,302 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 19:16:51,302 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 52 more)] === [2022-04-18 19:16:51,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:16:51,303 INFO L85 PathProgramCache]: Analyzing trace with hash 31220581, now seen corresponding path program 1 times [2022-04-18 19:16:51,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:16:51,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266127468] [2022-04-18 19:16:51,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:16:51,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:16:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:16:51,526 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 19:16:51,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:16:51,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266127468] [2022-04-18 19:16:51,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266127468] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:16:51,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:16:51,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 19:16:51,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72532881] [2022-04-18 19:16:51,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:16:51,529 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:16:51,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:16:51,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:16:51,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:16:51,804 INFO L87 Difference]: Start difference. First operand has 119414 states, 116953 states have (on average 3.893555530854275) internal successors, (455363), 119413 states have internal predecessors, (455363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:16:52,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:16:52,785 INFO L93 Difference]: Finished difference Result 49332 states and 186392 transitions. [2022-04-18 19:16:52,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:16:52,786 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-04-18 19:16:52,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:16:53,365 INFO L225 Difference]: With dead ends: 49332 [2022-04-18 19:16:53,365 INFO L226 Difference]: Without dead ends: 49332 [2022-04-18 19:16:53,366 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:16:53,374 INFO L913 BasicCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:16:53,375 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:16:53,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49332 states. [2022-04-18 19:16:55,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49332 to 49332. [2022-04-18 19:16:55,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49332 states, 49204 states have (on average 3.7881473050971466) internal successors, (186392), 49331 states have internal predecessors, (186392), 0 states have call successors, (0), 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 19:16:55,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49332 states to 49332 states and 186392 transitions. [2022-04-18 19:16:55,473 INFO L78 Accepts]: Start accepts. Automaton has 49332 states and 186392 transitions. Word has length 4 [2022-04-18 19:16:55,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:16:55,473 INFO L478 AbstractCegarLoop]: Abstraction has 49332 states and 186392 transitions. [2022-04-18 19:16:55,473 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 19:16:55,473 INFO L276 IsEmpty]: Start isEmpty. Operand 49332 states and 186392 transitions. [2022-04-18 19:16:55,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 19:16:55,474 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:16:55,474 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-04-18 19:16:55,474 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 19:16:55,474 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 52 more)] === [2022-04-18 19:16:55,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:16:55,475 INFO L85 PathProgramCache]: Analyzing trace with hash -61856440, now seen corresponding path program 1 times [2022-04-18 19:16:55,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:16:55,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237913851] [2022-04-18 19:16:55,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:16:55,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:16:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:16:55,515 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 19:16:55,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:16:55,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237913851] [2022-04-18 19:16:55,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237913851] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:16:55,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:16:55,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:16:55,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005362618] [2022-04-18 19:16:55,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:16:55,516 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:16:55,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:16:55,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:16:55,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:16:55,517 INFO L87 Difference]: Start difference. First operand 49332 states and 186392 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 19:16:56,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:16:56,450 INFO L93 Difference]: Finished difference Result 86243 states and 321029 transitions. [2022-04-18 19:16:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:16:56,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-04-18 19:16:56,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:16:57,398 INFO L225 Difference]: With dead ends: 86243 [2022-04-18 19:16:57,398 INFO L226 Difference]: Without dead ends: 86243 [2022-04-18 19:16:57,398 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 19:16:57,400 INFO L913 BasicCegarLoop]: 83 mSDtfsCounter, 72 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 19:16:57,400 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 125 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 19:16:57,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86243 states. [2022-04-18 19:16:59,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86243 to 55000. [2022-04-18 19:16:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55000 states, 54874 states have (on average 3.750264241717389) internal successors, (205792), 54999 states have internal predecessors, (205792), 0 states have call successors, (0), 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 19:16:59,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55000 states to 55000 states and 205792 transitions. [2022-04-18 19:16:59,660 INFO L78 Accepts]: Start accepts. Automaton has 55000 states and 205792 transitions. Word has length 6 [2022-04-18 19:16:59,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:16:59,660 INFO L478 AbstractCegarLoop]: Abstraction has 55000 states and 205792 transitions. [2022-04-18 19:16:59,660 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 19:16:59,661 INFO L276 IsEmpty]: Start isEmpty. Operand 55000 states and 205792 transitions. [2022-04-18 19:16:59,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-04-18 19:16:59,661 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:16:59,662 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:16:59,662 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 19:16:59,662 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 52 more)] === [2022-04-18 19:16:59,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:16:59,663 INFO L85 PathProgramCache]: Analyzing trace with hash 685530986, now seen corresponding path program 1 times [2022-04-18 19:16:59,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:16:59,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34066590] [2022-04-18 19:16:59,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:16:59,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:16:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:16:59,692 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 19:16:59,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:16:59,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34066590] [2022-04-18 19:16:59,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34066590] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:16:59,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:16:59,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:16:59,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619421301] [2022-04-18 19:16:59,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:16:59,694 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:16:59,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:16:59,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:16:59,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:16:59,694 INFO L87 Difference]: Start difference. First operand 55000 states and 205792 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 19:17:00,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:17:00,775 INFO L93 Difference]: Finished difference Result 91993 states and 340072 transitions. [2022-04-18 19:17:00,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:17:00,776 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 19:17:00,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:17:01,231 INFO L225 Difference]: With dead ends: 91993 [2022-04-18 19:17:01,232 INFO L226 Difference]: Without dead ends: 91993 [2022-04-18 19:17:01,232 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 19:17:01,232 INFO L913 BasicCegarLoop]: 83 mSDtfsCounter, 72 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 19:17:01,233 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 126 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 19:17:01,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91993 states. [2022-04-18 19:17:03,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91993 to 60729. [2022-04-18 19:17:03,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60729 states, 60609 states have (on average 3.718193667607121) internal successors, (225356), 60728 states have internal predecessors, (225356), 0 states have call successors, (0), 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 19:17:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60729 states to 60729 states and 225356 transitions. [2022-04-18 19:17:03,647 INFO L78 Accepts]: Start accepts. Automaton has 60729 states and 225356 transitions. Word has length 8 [2022-04-18 19:17:03,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:17:03,647 INFO L478 AbstractCegarLoop]: Abstraction has 60729 states and 225356 transitions. [2022-04-18 19:17:03,647 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 19:17:03,647 INFO L276 IsEmpty]: Start isEmpty. Operand 60729 states and 225356 transitions. [2022-04-18 19:17:03,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-18 19:17:03,649 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:17:03,649 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:17:03,649 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 19:17:03,650 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 52 more)] === [2022-04-18 19:17:03,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:17:03,650 INFO L85 PathProgramCache]: Analyzing trace with hash -478374608, now seen corresponding path program 1 times [2022-04-18 19:17:03,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:17:03,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188960734] [2022-04-18 19:17:03,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:17:03,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:17:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:17:03,687 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 19:17:03,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:17:03,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188960734] [2022-04-18 19:17:03,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188960734] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:17:03,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:17:03,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 19:17:03,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220447285] [2022-04-18 19:17:03,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:17:03,689 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:17:03,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:17:03,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:17:03,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:17:03,690 INFO L87 Difference]: Start difference. First operand 60729 states and 225356 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 19:17:04,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:17:04,534 INFO L93 Difference]: Finished difference Result 63595 states and 236131 transitions. [2022-04-18 19:17:04,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:17:04,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-04-18 19:17:04,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:17:04,885 INFO L225 Difference]: With dead ends: 63595 [2022-04-18 19:17:04,886 INFO L226 Difference]: Without dead ends: 63595 [2022-04-18 19:17:04,886 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 19:17:04,887 INFO L913 BasicCegarLoop]: 81 mSDtfsCounter, 44 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 19:17:04,887 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 127 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 19:17:05,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63595 states. [2022-04-18 19:17:06,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63595 to 62010. [2022-04-18 19:17:06,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62010 states, 61894 states have (on average 3.719310433967751) internal successors, (230203), 62009 states have internal predecessors, (230203), 0 states have call successors, (0), 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 19:17:06,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62010 states to 62010 states and 230203 transitions. [2022-04-18 19:17:06,919 INFO L78 Accepts]: Start accepts. Automaton has 62010 states and 230203 transitions. Word has length 13 [2022-04-18 19:17:06,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:17:06,919 INFO L478 AbstractCegarLoop]: Abstraction has 62010 states and 230203 transitions. [2022-04-18 19:17:06,920 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 19:17:06,920 INFO L276 IsEmpty]: Start isEmpty. Operand 62010 states and 230203 transitions. [2022-04-18 19:17:06,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-18 19:17:06,922 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:17:06,922 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:17:06,922 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 19:17:06,923 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 52 more)] === [2022-04-18 19:17:06,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:17:06,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1504352517, now seen corresponding path program 1 times [2022-04-18 19:17:06,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:17:06,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522426071] [2022-04-18 19:17:06,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:17:06,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:17:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:17:06,951 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 19:17:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 19:17:07,473 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 19:17:07,473 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 19:17:07,473 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (55 of 56 remaining) [2022-04-18 19:17:07,473 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (54 of 56 remaining) [2022-04-18 19:17:07,473 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (53 of 56 remaining) [2022-04-18 19:17:07,473 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (52 of 56 remaining) [2022-04-18 19:17:07,474 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (51 of 56 remaining) [2022-04-18 19:17:07,474 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (50 of 56 remaining) [2022-04-18 19:17:07,474 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (49 of 56 remaining) [2022-04-18 19:17:07,474 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (48 of 56 remaining) [2022-04-18 19:17:07,474 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (47 of 56 remaining) [2022-04-18 19:17:07,474 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (46 of 56 remaining) [2022-04-18 19:17:07,474 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (45 of 56 remaining) [2022-04-18 19:17:07,474 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (44 of 56 remaining) [2022-04-18 19:17:07,474 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (43 of 56 remaining) [2022-04-18 19:17:07,475 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (42 of 56 remaining) [2022-04-18 19:17:07,475 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (41 of 56 remaining) [2022-04-18 19:17:07,475 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (40 of 56 remaining) [2022-04-18 19:17:07,475 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (39 of 56 remaining) [2022-04-18 19:17:07,493 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (38 of 56 remaining) [2022-04-18 19:17:07,493 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (37 of 56 remaining) [2022-04-18 19:17:07,493 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 56 remaining) [2022-04-18 19:17:07,494 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (35 of 56 remaining) [2022-04-18 19:17:07,494 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (34 of 56 remaining) [2022-04-18 19:17:07,494 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (33 of 56 remaining) [2022-04-18 19:17:07,494 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (32 of 56 remaining) [2022-04-18 19:17:07,495 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (31 of 56 remaining) [2022-04-18 19:17:07,495 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (30 of 56 remaining) [2022-04-18 19:17:07,495 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (29 of 56 remaining) [2022-04-18 19:17:07,495 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (28 of 56 remaining) [2022-04-18 19:17:07,496 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (27 of 56 remaining) [2022-04-18 19:17:07,496 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (26 of 56 remaining) [2022-04-18 19:17:07,497 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (25 of 56 remaining) [2022-04-18 19:17:07,497 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (24 of 56 remaining) [2022-04-18 19:17:07,497 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (23 of 56 remaining) [2022-04-18 19:17:07,497 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (22 of 56 remaining) [2022-04-18 19:17:07,497 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (21 of 56 remaining) [2022-04-18 19:17:07,497 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (20 of 56 remaining) [2022-04-18 19:17:07,498 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (19 of 56 remaining) [2022-04-18 19:17:07,498 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (18 of 56 remaining) [2022-04-18 19:17:07,498 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (17 of 56 remaining) [2022-04-18 19:17:07,498 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (16 of 56 remaining) [2022-04-18 19:17:07,498 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (15 of 56 remaining) [2022-04-18 19:17:07,498 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (14 of 56 remaining) [2022-04-18 19:17:07,498 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (13 of 56 remaining) [2022-04-18 19:17:07,499 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (12 of 56 remaining) [2022-04-18 19:17:07,499 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 56 remaining) [2022-04-18 19:17:07,499 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 56 remaining) [2022-04-18 19:17:07,499 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 56 remaining) [2022-04-18 19:17:07,499 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 56 remaining) [2022-04-18 19:17:07,499 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 56 remaining) [2022-04-18 19:17:07,500 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 56 remaining) [2022-04-18 19:17:07,500 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 56 remaining) [2022-04-18 19:17:07,500 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 56 remaining) [2022-04-18 19:17:07,500 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 56 remaining) [2022-04-18 19:17:07,500 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 56 remaining) [2022-04-18 19:17:07,500 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 56 remaining) [2022-04-18 19:17:07,501 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 56 remaining) [2022-04-18 19:17:07,501 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 19:17:07,501 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-18 19:17:07,501 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 19:17:07,501 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 19:17:07,548 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 19:17:07,549 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:17:07,549 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 19:17:07,550 INFO L341 AbstractCegarLoop]: Starting to check reachability of 74 error locations. [2022-04-18 19:17:07,569 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:17:07,569 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 252 places, 254 transitions, 550 flow [2022-04-18 19:17:07,569 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 252 places, 254 transitions, 550 flow [2022-04-18 19:17:07,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 252 places, 254 transitions, 550 flow [2022-04-18 19:17:07,627 INFO L129 PetriNetUnfolder]: 13/244 cut-off events. [2022-04-18 19:17:07,627 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 19:17:07,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 244 events. 13/244 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 673 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 258. Up to 8 conditions per place. [2022-04-18 19:17:07,645 INFO L116 LiptonReduction]: Number of co-enabled transitions 25316 [2022-04-18 19:17:12,728 INFO L131 LiptonReduction]: Checked pairs total: 458876 [2022-04-18 19:17:12,729 INFO L133 LiptonReduction]: Total number of compositions: 277 [2022-04-18 19:17:12,730 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 164 places, 156 transitions, 354 flow