./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.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 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:42:00,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:42:00,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:42:00,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:42:00,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:42:00,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:42:00,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:42:00,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:42:00,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:42:00,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:42:00,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:42:00,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:42:00,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:42:00,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:42:00,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:42:01,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:42:01,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:42:01,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:42:01,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:42:01,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:42:01,011 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:42:01,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:42:01,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:42:01,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:42:01,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:42:01,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:42:01,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:42:01,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:42:01,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:42:01,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:42:01,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:42:01,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:42:01,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:42:01,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:42:01,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:42:01,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:42:01,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:42:01,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:42:01,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:42:01,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:42:01,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:42:01,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:42:01,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 18:42:01,061 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:42:01,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:42:01,062 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:42:01,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:42:01,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:42:01,063 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:42:01,063 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 18:42:01,063 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 18:42:01,063 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 18:42:01,064 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 18:42:01,064 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 18:42:01,064 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 18:42:01,065 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 18:42:01,065 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 18:42:01,065 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 18:42:01,065 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 18:42:01,065 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 18:42:01,066 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 18:42:01,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:42:01,067 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:42:01,067 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:42:01,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 18:42:01,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:42:01,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:42:01,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:42:01,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:42:01,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:42:01,068 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:42:01,068 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:42:01,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:42:01,069 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:42:01,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:42:01,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:42:01,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:42:01,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:42:01,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:42:01,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:42:01,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:42:01,070 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 18:42:01,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 18:42:01,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:42:01,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 18:42:01,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 18:42:01,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef [2022-04-18 18:42:01,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:42:01,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:42:01,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:42:01,354 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:42:01,355 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:42:01,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2022-04-18 18:42:01,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/78093d2d0/0c577fed19924a5bbbea78957e3da615/FLAG574a706da [2022-04-18 18:42:01,929 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:42:01,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2022-04-18 18:42:01,952 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/78093d2d0/0c577fed19924a5bbbea78957e3da615/FLAG574a706da [2022-04-18 18:42:02,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/78093d2d0/0c577fed19924a5bbbea78957e3da615 [2022-04-18 18:42:02,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:42:02,435 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:42:02,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:42:02,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:42:02,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:42:02,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:42:02" (1/1) ... [2022-04-18 18:42:02,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576707a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:02, skipping insertion in model container [2022-04-18 18:42:02,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:42:02" (1/1) ... [2022-04-18 18:42:02,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:42:02,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:42:02,864 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2022-04-18 18:42:02,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:42:02,897 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:42:02,936 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2022-04-18 18:42:02,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:42:02,987 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:42:02,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:02 WrapperNode [2022-04-18 18:42:02,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:42:02,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:42:02,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:42:02,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:42:02,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:02" (1/1) ... [2022-04-18 18:42:03,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:02" (1/1) ... [2022-04-18 18:42:03,058 INFO L137 Inliner]: procedures = 270, calls = 33, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2022-04-18 18:42:03,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:42:03,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:42:03,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:42:03,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:42:03,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:02" (1/1) ... [2022-04-18 18:42:03,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:02" (1/1) ... [2022-04-18 18:42:03,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:02" (1/1) ... [2022-04-18 18:42:03,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:02" (1/1) ... [2022-04-18 18:42:03,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:02" (1/1) ... [2022-04-18 18:42:03,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:02" (1/1) ... [2022-04-18 18:42:03,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:02" (1/1) ... [2022-04-18 18:42:03,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:42:03,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:42:03,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:42:03,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:42:03,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:02" (1/1) ... [2022-04-18 18:42:03,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:42:03,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:42:03,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 18:42:03,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 18:42:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:42:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:42:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 18:42:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 18:42:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 18:42:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:42:03,201 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-04-18 18:42:03,202 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-04-18 18:42:03,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 18:42:03,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:42:03,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:42:03,203 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 18:42:03,363 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:42:03,365 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:42:03,615 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:42:03,622 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:42:03,622 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-04-18 18:42:03,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:42:03 BoogieIcfgContainer [2022-04-18 18:42:03,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:42:03,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:42:03,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:42:03,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:42:03,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:42:02" (1/3) ... [2022-04-18 18:42:03,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48dbe6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:42:03, skipping insertion in model container [2022-04-18 18:42:03,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:02" (2/3) ... [2022-04-18 18:42:03,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48dbe6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:42:03, skipping insertion in model container [2022-04-18 18:42:03,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:42:03" (3/3) ... [2022-04-18 18:42:03,635 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2022-04-18 18:42:03,641 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:42:03,641 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:42:03,642 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-04-18 18:42:03,642 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:42:03,719 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 18:42:03,773 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:42:03,780 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 18:42:03,781 INFO L341 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-04-18 18:42:03,795 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:42:03,805 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 153 transitions, 314 flow [2022-04-18 18:42:03,807 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 153 transitions, 314 flow [2022-04-18 18:42:03,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 141 places, 153 transitions, 314 flow [2022-04-18 18:42:03,903 INFO L129 PetriNetUnfolder]: 23/206 cut-off events. [2022-04-18 18:42:03,904 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 18:42:03,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 206 events. 23/206 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 571 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2022-04-18 18:42:03,914 INFO L116 LiptonReduction]: Number of co-enabled transitions 5192 [2022-04-18 18:42:08,209 INFO L131 LiptonReduction]: Checked pairs total: 12328 [2022-04-18 18:42:08,210 INFO L133 LiptonReduction]: Total number of compositions: 146 [2022-04-18 18:42:08,216 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 47 transitions, 102 flow [2022-04-18 18:42:08,247 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 335 states, 308 states have (on average 2.529220779220779) internal successors, (779), 334 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:42:08,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 335 states, 308 states have (on average 2.529220779220779) internal successors, (779), 334 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:42:08,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 18:42:08,254 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:42:08,255 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 18:42:08,255 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-04-18 18:42:08,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:42:08,259 INFO L85 PathProgramCache]: Analyzing trace with hash 18147078, now seen corresponding path program 1 times [2022-04-18 18:42:08,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:42:08,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255786706] [2022-04-18 18:42:08,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:42:08,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:42:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:42:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:42:08,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:42:08,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255786706] [2022-04-18 18:42:08,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255786706] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:42:08,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:42:08,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:42:08,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177658516] [2022-04-18 18:42:08,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:42:08,459 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:42:08,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:42:08,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:42:08,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:42:08,480 INFO L87 Difference]: Start difference. First operand has 335 states, 308 states have (on average 2.529220779220779) internal successors, (779), 334 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) 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 18:42:08,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:42:08,573 INFO L93 Difference]: Finished difference Result 276 states and 531 transitions. [2022-04-18 18:42:08,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:42:08,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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 18:42:08,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:42:08,588 INFO L225 Difference]: With dead ends: 276 [2022-04-18 18:42:08,588 INFO L226 Difference]: Without dead ends: 252 [2022-04-18 18:42:08,589 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:42:08,592 INFO L913 BasicCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 18:42:08,594 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 20 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 18:42:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-04-18 18:42:08,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2022-04-18 18:42:08,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 242 states have (on average 1.9958677685950412) internal successors, (483), 251 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:42:08,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 483 transitions. [2022-04-18 18:42:08,633 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 483 transitions. Word has length 4 [2022-04-18 18:42:08,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:42:08,633 INFO L478 AbstractCegarLoop]: Abstraction has 252 states and 483 transitions. [2022-04-18 18:42:08,633 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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 18:42:08,633 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 483 transitions. [2022-04-18 18:42:08,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 18:42:08,634 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:42:08,634 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-04-18 18:42:08,634 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 18:42:08,635 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-04-18 18:42:08,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:42:08,635 INFO L85 PathProgramCache]: Analyzing trace with hash 241395879, now seen corresponding path program 1 times [2022-04-18 18:42:08,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:42:08,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793300826] [2022-04-18 18:42:08,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:42:08,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:42:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:42:08,659 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 18:42:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:42:08,699 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 18:42:08,699 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 18:42:08,700 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-04-18 18:42:08,702 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-04-18 18:42:08,703 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-04-18 18:42:08,703 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-04-18 18:42:08,703 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-04-18 18:42:08,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-04-18 18:42:08,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-04-18 18:42:08,709 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-04-18 18:42:08,709 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-04-18 18:42:08,709 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-04-18 18:42:08,709 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-04-18 18:42:08,710 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 18:42:08,712 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 18:42:08,713 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 18:42:08,713 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 18:42:08,739 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 18:42:08,747 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:42:08,750 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 18:42:08,751 INFO L341 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-04-18 18:42:08,753 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:42:08,754 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 199 transitions, 416 flow [2022-04-18 18:42:08,754 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 199 transitions, 416 flow [2022-04-18 18:42:08,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 182 places, 199 transitions, 416 flow [2022-04-18 18:42:08,803 INFO L129 PetriNetUnfolder]: 40/336 cut-off events. [2022-04-18 18:42:08,803 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-04-18 18:42:08,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 336 events. 40/336 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1146 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 208. Up to 9 conditions per place. [2022-04-18 18:42:08,821 INFO L116 LiptonReduction]: Number of co-enabled transitions 15224 [2022-04-18 18:42:12,954 INFO L131 LiptonReduction]: Checked pairs total: 61152 [2022-04-18 18:42:12,954 INFO L133 LiptonReduction]: Total number of compositions: 170 [2022-04-18 18:42:12,957 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 85 transitions, 188 flow [2022-04-18 18:42:13,312 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10384 states, 10232 states have (on average 3.576817826426896) internal successors, (36598), 10383 states have internal predecessors, (36598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:42:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 10384 states, 10232 states have (on average 3.576817826426896) internal successors, (36598), 10383 states have internal predecessors, (36598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:42:13,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 18:42:13,353 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:42:13,353 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 18:42:13,354 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 18:42:13,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:42:13,355 INFO L85 PathProgramCache]: Analyzing trace with hash 30670147, now seen corresponding path program 1 times [2022-04-18 18:42:13,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:42:13,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597489660] [2022-04-18 18:42:13,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:42:13,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:42:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:42:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:42:13,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:42:13,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597489660] [2022-04-18 18:42:13,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597489660] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:42:13,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:42:13,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:42:13,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056357227] [2022-04-18 18:42:13,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:42:13,413 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:42:13,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:42:13,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:42:13,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:42:13,439 INFO L87 Difference]: Start difference. First operand has 10384 states, 10232 states have (on average 3.576817826426896) internal successors, (36598), 10383 states have internal predecessors, (36598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) 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 18:42:13,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:42:13,662 INFO L93 Difference]: Finished difference Result 9751 states and 27970 transitions. [2022-04-18 18:42:13,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:42:13,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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 18:42:13,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:42:13,727 INFO L225 Difference]: With dead ends: 9751 [2022-04-18 18:42:13,727 INFO L226 Difference]: Without dead ends: 9642 [2022-04-18 18:42:13,728 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:42:13,733 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 26 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 18:42:13,736 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 66 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 18:42:13,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9642 states. [2022-04-18 18:42:14,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9642 to 9642. [2022-04-18 18:42:14,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9642 states, 9531 states have (on average 2.9038925611163573) internal successors, (27677), 9641 states have internal predecessors, (27677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:42:14,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9642 states to 9642 states and 27677 transitions. [2022-04-18 18:42:14,111 INFO L78 Accepts]: Start accepts. Automaton has 9642 states and 27677 transitions. Word has length 4 [2022-04-18 18:42:14,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:42:14,111 INFO L478 AbstractCegarLoop]: Abstraction has 9642 states and 27677 transitions. [2022-04-18 18:42:14,111 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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 18:42:14,111 INFO L276 IsEmpty]: Start isEmpty. Operand 9642 states and 27677 transitions. [2022-04-18 18:42:14,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-04-18 18:42:14,112 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:42:14,112 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:42:14,112 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 18:42:14,113 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 18:42:14,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:42:14,113 INFO L85 PathProgramCache]: Analyzing trace with hash 517199379, now seen corresponding path program 1 times [2022-04-18 18:42:14,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:42:14,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043345059] [2022-04-18 18:42:14,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:42:14,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:42:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:42:14,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:42:14,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:42:14,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043345059] [2022-04-18 18:42:14,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043345059] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:42:14,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:42:14,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:42:14,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143673922] [2022-04-18 18:42:14,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:42:14,145 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:42:14,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:42:14,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:42:14,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:42:14,145 INFO L87 Difference]: Start difference. First operand 9642 states and 27677 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 18:42:14,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:42:14,405 INFO L93 Difference]: Finished difference Result 13305 states and 36904 transitions. [2022-04-18 18:42:14,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:42:14,406 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 18:42:14,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:42:14,518 INFO L225 Difference]: With dead ends: 13305 [2022-04-18 18:42:14,518 INFO L226 Difference]: Without dead ends: 13269 [2022-04-18 18:42:14,519 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:42:14,519 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 53 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 18:42:14,520 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 53 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 18:42:14,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13269 states. [2022-04-18 18:42:15,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13269 to 9944. [2022-04-18 18:42:15,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9944 states, 9851 states have (on average 2.8457009440665924) internal successors, (28033), 9943 states have internal predecessors, (28033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:42:15,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9944 states to 9944 states and 28033 transitions. [2022-04-18 18:42:15,164 INFO L78 Accepts]: Start accepts. Automaton has 9944 states and 28033 transitions. Word has length 8 [2022-04-18 18:42:15,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:42:15,165 INFO L478 AbstractCegarLoop]: Abstraction has 9944 states and 28033 transitions. [2022-04-18 18:42:15,165 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 18:42:15,165 INFO L276 IsEmpty]: Start isEmpty. Operand 9944 states and 28033 transitions. [2022-04-18 18:42:15,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-18 18:42:15,167 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:42:15,167 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-04-18 18:42:15,167 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 18:42:15,167 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 18:42:15,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:42:15,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1848586143, now seen corresponding path program 1 times [2022-04-18 18:42:15,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:42:15,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533751776] [2022-04-18 18:42:15,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:42:15,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:42:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:42:15,197 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 18:42:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:42:15,212 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 18:42:15,213 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 18:42:15,213 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-04-18 18:42:15,213 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-04-18 18:42:15,213 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-04-18 18:42:15,214 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-04-18 18:42:15,214 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-04-18 18:42:15,214 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-04-18 18:42:15,214 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-04-18 18:42:15,214 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-04-18 18:42:15,215 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-04-18 18:42:15,215 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-04-18 18:42:15,215 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-04-18 18:42:15,215 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-04-18 18:42:15,215 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-04-18 18:42:15,215 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-04-18 18:42:15,216 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-04-18 18:42:15,216 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 18:42:15,216 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 18:42:15,216 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 18:42:15,217 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 18:42:15,230 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 18:42:15,231 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:42:15,232 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 18:42:15,232 INFO L341 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-04-18 18:42:15,234 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:42:15,234 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 245 transitions, 520 flow [2022-04-18 18:42:15,234 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 245 transitions, 520 flow [2022-04-18 18:42:15,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 223 places, 245 transitions, 520 flow [2022-04-18 18:42:15,355 INFO L129 PetriNetUnfolder]: 62/511 cut-off events. [2022-04-18 18:42:15,355 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-04-18 18:42:15,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 511 events. 62/511 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1923 event pairs, 1 based on Foata normal form. 0/421 useless extension candidates. Maximal degree in co-relation 344. Up to 16 conditions per place. [2022-04-18 18:42:15,381 INFO L116 LiptonReduction]: Number of co-enabled transitions 29040 [2022-04-18 18:42:20,026 INFO L131 LiptonReduction]: Checked pairs total: 131645 [2022-04-18 18:42:20,026 INFO L133 LiptonReduction]: Total number of compositions: 205 [2022-04-18 18:42:20,027 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 98 places, 115 transitions, 260 flow [2022-04-18 18:42:27,359 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 253024 states, 252187 states have (on average 4.669883856027472) internal successors, (1177684), 253023 states have internal predecessors, (1177684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:42:27,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 253024 states, 252187 states have (on average 4.669883856027472) internal successors, (1177684), 253023 states have internal predecessors, (1177684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:42:27,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 18:42:27,927 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:42:27,927 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 18:42:27,927 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-04-18 18:42:27,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:42:27,929 INFO L85 PathProgramCache]: Analyzing trace with hash 45683411, now seen corresponding path program 1 times [2022-04-18 18:42:27,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:42:27,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61300394] [2022-04-18 18:42:27,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:42:27,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:42:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:42:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:42:27,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:42:27,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61300394] [2022-04-18 18:42:27,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61300394] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:42:27,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:42:27,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:42:27,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893059706] [2022-04-18 18:42:27,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:42:27,976 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:42:27,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:42:27,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:42:27,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:42:28,463 INFO L87 Difference]: Start difference. First operand has 253024 states, 252187 states have (on average 4.669883856027472) internal successors, (1177684), 253023 states have internal predecessors, (1177684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) 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 18:42:32,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:42:32,664 INFO L93 Difference]: Finished difference Result 237391 states and 904998 transitions. [2022-04-18 18:42:32,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:42:32,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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 18:42:32,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:42:35,275 INFO L225 Difference]: With dead ends: 237391 [2022-04-18 18:42:35,275 INFO L226 Difference]: Without dead ends: 236970 [2022-04-18 18:42:35,278 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:42:35,279 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 26 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 18:42:35,280 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 88 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 18:42:36,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236970 states. [2022-04-18 18:42:43,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236970 to 236970. [2022-04-18 18:42:44,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236970 states, 236358 states have (on average 3.822798466732668) internal successors, (903549), 236969 states have internal predecessors, (903549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:42:47,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236970 states to 236970 states and 903549 transitions. [2022-04-18 18:42:47,278 INFO L78 Accepts]: Start accepts. Automaton has 236970 states and 903549 transitions. Word has length 4 [2022-04-18 18:42:47,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:42:47,278 INFO L478 AbstractCegarLoop]: Abstraction has 236970 states and 903549 transitions. [2022-04-18 18:42:47,278 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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 18:42:47,278 INFO L276 IsEmpty]: Start isEmpty. Operand 236970 states and 903549 transitions. [2022-04-18 18:42:47,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-04-18 18:42:47,279 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:42:47,279 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:42:47,279 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 18:42:47,279 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-04-18 18:42:47,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:42:47,279 INFO L85 PathProgramCache]: Analyzing trace with hash -233848402, now seen corresponding path program 1 times [2022-04-18 18:42:47,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:42:47,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145070393] [2022-04-18 18:42:47,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:42:47,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:42:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:42:47,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:42:47,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:42:47,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145070393] [2022-04-18 18:42:47,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145070393] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:42:47,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:42:47,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:42:47,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822185688] [2022-04-18 18:42:47,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:42:47,316 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:42:47,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:42:47,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:42:47,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:42:47,317 INFO L87 Difference]: Start difference. First operand 236970 states and 903549 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 18:42:51,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:42:51,477 INFO L93 Difference]: Finished difference Result 382136 states and 1402517 transitions. [2022-04-18 18:42:51,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:42:51,477 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 18:42:51,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:42:54,986 INFO L225 Difference]: With dead ends: 382136 [2022-04-18 18:42:54,986 INFO L226 Difference]: Without dead ends: 382019 [2022-04-18 18:42:54,987 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:42:54,987 INFO L913 BasicCegarLoop]: 51 mSDtfsCounter, 72 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 18:42:54,989 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 69 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 18:42:55,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382019 states. [2022-04-18 18:43:05,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382019 to 273725. [2022-04-18 18:43:06,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273725 states, 273151 states have (on average 3.7464699012634037) internal successors, (1023352), 273724 states have internal predecessors, (1023352), 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)