./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_61-invariant_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:43:27,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:43:27,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:43:27,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:43:27,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:43:27,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:43:27,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:43:27,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:43:27,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:43:27,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:43:27,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:43:27,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:43:27,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:43:27,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:43:27,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:43:27,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:43:27,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:43:27,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:43:27,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:43:27,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:43:27,618 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:43:27,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:43:27,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:43:27,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:43:27,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:43:27,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:43:27,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:43:27,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:43:27,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:43:27,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:43:27,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:43:27,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:43:27,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:43:27,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:43:27,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:43:27,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:43:27,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:43:27,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:43:27,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:43:27,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:43:27,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:43:27,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:43:27,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 18:43:27,669 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:43:27,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:43:27,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:43:27,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:43:27,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:43:27,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:43:27,671 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 18:43:27,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 18:43:27,672 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 18:43:27,673 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 18:43:27,673 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 18:43:27,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 18:43:27,673 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 18:43:27,673 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 18:43:27,674 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 18:43:27,674 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 18:43:27,674 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 18:43:27,674 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 18:43:27,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:43:27,675 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:43:27,676 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:43:27,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 18:43:27,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:43:27,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:43:27,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:43:27,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:43:27,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:43:27,678 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:43:27,678 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:43:27,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:43:27,678 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:43:27,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:43:27,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:43:27,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:43:27,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:43:27,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:43:27,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:43:27,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:43:27,680 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 18:43:27,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 18:43:27,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:43:27,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 18:43:27,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 18:43:27,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 [2022-04-18 18:43:27,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:43:27,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:43:27,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:43:27,942 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:43:27,942 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:43:27,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2022-04-18 18:43:28,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2df0a6cf8/e6a46245a4644c7f9b3fa73b226f0a28/FLAG1ce16379a [2022-04-18 18:43:28,466 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:43:28,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2022-04-18 18:43:28,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2df0a6cf8/e6a46245a4644c7f9b3fa73b226f0a28/FLAG1ce16379a [2022-04-18 18:43:28,976 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2df0a6cf8/e6a46245a4644c7f9b3fa73b226f0a28 [2022-04-18 18:43:28,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:43:28,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:43:28,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:43:28,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:43:28,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:43:28,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:43:28" (1/1) ... [2022-04-18 18:43:28,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f70d5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:28, skipping insertion in model container [2022-04-18 18:43:28,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:43:28" (1/1) ... [2022-04-18 18:43:28,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:43:29,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:43:29,272 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_61-invariant_racing.i[30176,30189] [2022-04-18 18:43:29,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:43:29,317 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:43:29,367 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_61-invariant_racing.i[30176,30189] [2022-04-18 18:43:29,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:43:29,404 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:43:29,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:29 WrapperNode [2022-04-18 18:43:29,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:43:29,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:43:29,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:43:29,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:43:29,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:29" (1/1) ... [2022-04-18 18:43:29,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:29" (1/1) ... [2022-04-18 18:43:29,444 INFO L137 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 115 [2022-04-18 18:43:29,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:43:29,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:43:29,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:43:29,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:43:29,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:29" (1/1) ... [2022-04-18 18:43:29,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:29" (1/1) ... [2022-04-18 18:43:29,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:29" (1/1) ... [2022-04-18 18:43:29,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:29" (1/1) ... [2022-04-18 18:43:29,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:29" (1/1) ... [2022-04-18 18:43:29,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:29" (1/1) ... [2022-04-18 18:43:29,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:29" (1/1) ... [2022-04-18 18:43:29,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:43:29,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:43:29,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:43:29,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:43:29,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:29" (1/1) ... [2022-04-18 18:43:29,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:43:29,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:43:29,545 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 18:43:29,558 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 18:43:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 18:43:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 18:43:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 18:43:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:43:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:43:29,579 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-04-18 18:43:29,579 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-04-18 18:43:29,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:43:29,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 18:43:29,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:43:29,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:43:29,580 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 18:43:29,669 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:43:29,671 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:43:29,954 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:43:29,960 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:43:29,961 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-04-18 18:43:29,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:43:29 BoogieIcfgContainer [2022-04-18 18:43:29,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:43:29,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:43:29,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:43:29,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:43:29,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:43:28" (1/3) ... [2022-04-18 18:43:29,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d726405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:43:29, skipping insertion in model container [2022-04-18 18:43:29,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:43:29" (2/3) ... [2022-04-18 18:43:29,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d726405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:43:29, skipping insertion in model container [2022-04-18 18:43:29,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:43:29" (3/3) ... [2022-04-18 18:43:29,970 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2022-04-18 18:43:29,974 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:43:29,975 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:43:29,975 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-04-18 18:43:29,975 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:43:30,025 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 18:43:30,066 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:43:30,073 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 18:43:30,073 INFO L341 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-04-18 18:43:30,086 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:43:30,097 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 173 transitions, 354 flow [2022-04-18 18:43:30,100 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 173 transitions, 354 flow [2022-04-18 18:43:30,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 157 places, 173 transitions, 354 flow [2022-04-18 18:43:30,183 INFO L129 PetriNetUnfolder]: 30/255 cut-off events. [2022-04-18 18:43:30,188 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 18:43:30,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 255 events. 30/255 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1029 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 137. Up to 6 conditions per place. [2022-04-18 18:43:30,204 INFO L116 LiptonReduction]: Number of co-enabled transitions 8800 [2022-04-18 18:43:33,185 INFO L131 LiptonReduction]: Checked pairs total: 47340 [2022-04-18 18:43:33,186 INFO L133 LiptonReduction]: Total number of compositions: 140 [2022-04-18 18:43:33,194 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 84 transitions, 176 flow [2022-04-18 18:43:33,250 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1146 states, 1086 states have (on average 2.483425414364641) internal successors, (2697), 1145 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:33,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 1146 states, 1086 states have (on average 2.483425414364641) internal successors, (2697), 1145 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:33,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-04-18 18:43:33,259 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:43:33,260 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-04-18 18:43:33,260 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-04-18 18:43:33,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:43:33,265 INFO L85 PathProgramCache]: Analyzing trace with hash 599267246, now seen corresponding path program 1 times [2022-04-18 18:43:33,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:43:33,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263208431] [2022-04-18 18:43:33,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:43:33,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:43:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:43:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:43:33,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:43:33,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263208431] [2022-04-18 18:43:33,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263208431] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:43:33,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:43:33,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:43:33,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939596873] [2022-04-18 18:43:33,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:43:33,424 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:43:33,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:43:33,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:43:33,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:43:33,453 INFO L87 Difference]: Start difference. First operand has 1146 states, 1086 states have (on average 2.483425414364641) internal successors, (2697), 1145 states have internal predecessors, (2697), 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 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:33,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:43:33,545 INFO L93 Difference]: Finished difference Result 1086 states and 2136 transitions. [2022-04-18 18:43:33,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:43:33,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-04-18 18:43:33,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:43:33,563 INFO L225 Difference]: With dead ends: 1086 [2022-04-18 18:43:33,563 INFO L226 Difference]: Without dead ends: 1059 [2022-04-18 18:43:33,564 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:43:33,566 INFO L913 BasicCegarLoop]: 37 mSDtfsCounter, 32 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 18:43:33,567 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 74 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 18:43:33,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-04-18 18:43:33,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1059. [2022-04-18 18:43:33,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 1013 states have (on average 2.052319842053307) internal successors, (2079), 1058 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:33,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 2079 transitions. [2022-04-18 18:43:33,681 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 2079 transitions. Word has length 5 [2022-04-18 18:43:33,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:43:33,682 INFO L478 AbstractCegarLoop]: Abstraction has 1059 states and 2079 transitions. [2022-04-18 18:43:33,682 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:33,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 2079 transitions. [2022-04-18 18:43:33,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 18:43:33,683 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:43:33,683 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-04-18 18:43:33,683 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 18:43:33,683 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-04-18 18:43:33,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:43:33,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1399384010, now seen corresponding path program 1 times [2022-04-18 18:43:33,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:43:33,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621352445] [2022-04-18 18:43:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:43:33,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:43:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:43:33,713 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 18:43:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:43:33,747 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 18:43:33,747 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 18:43:33,749 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-04-18 18:43:33,750 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-04-18 18:43:33,750 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-04-18 18:43:33,751 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-04-18 18:43:33,751 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-04-18 18:43:33,752 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-04-18 18:43:33,752 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-04-18 18:43:33,753 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-04-18 18:43:33,753 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-04-18 18:43:33,754 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-04-18 18:43:33,754 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-04-18 18:43:33,754 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-04-18 18:43:33,755 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-04-18 18:43:33,755 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-04-18 18:43:33,755 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-04-18 18:43:33,755 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-04-18 18:43:33,756 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-04-18 18:43:33,756 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 18:43:33,758 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 18:43:33,759 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 18:43:33,759 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 18:43:33,776 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 18:43:33,778 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:43:33,779 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 18:43:33,779 INFO L341 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-04-18 18:43:33,781 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:43:33,782 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 225 transitions, 468 flow [2022-04-18 18:43:33,782 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 225 transitions, 468 flow [2022-04-18 18:43:33,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 203 places, 225 transitions, 468 flow [2022-04-18 18:43:33,845 INFO L129 PetriNetUnfolder]: 51/420 cut-off events. [2022-04-18 18:43:33,846 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-04-18 18:43:33,851 INFO L84 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 420 events. 51/420 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1906 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 257. Up to 9 conditions per place. [2022-04-18 18:43:33,868 INFO L116 LiptonReduction]: Number of co-enabled transitions 23700 [2022-04-18 18:43:37,691 INFO L131 LiptonReduction]: Checked pairs total: 144288 [2022-04-18 18:43:37,691 INFO L133 LiptonReduction]: Total number of compositions: 173 [2022-04-18 18:43:37,693 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 105 places, 124 transitions, 266 flow [2022-04-18 18:43:38,850 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 35587 states, 35203 states have (on average 3.575462318552396) internal successors, (125867), 35586 states have internal predecessors, (125867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:38,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 35587 states, 35203 states have (on average 3.575462318552396) internal successors, (125867), 35586 states have internal predecessors, (125867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:38,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-04-18 18:43:38,949 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:43:38,949 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-04-18 18:43:38,950 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 18:43:38,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:43:38,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1019684699, now seen corresponding path program 1 times [2022-04-18 18:43:38,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:43:38,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034679432] [2022-04-18 18:43:38,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:43:38,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:43:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:43:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:43:39,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:43:39,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034679432] [2022-04-18 18:43:39,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034679432] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:43:39,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:43:39,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:43:39,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785638686] [2022-04-18 18:43:39,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:43:39,028 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:43:39,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:43:39,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:43:39,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:43:39,121 INFO L87 Difference]: Start difference. First operand has 35587 states, 35203 states have (on average 3.575462318552396) internal successors, (125867), 35586 states have internal predecessors, (125867), 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 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:39,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:43:39,791 INFO L93 Difference]: Finished difference Result 34597 states and 101618 transitions. [2022-04-18 18:43:39,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:43:39,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-04-18 18:43:39,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:43:40,194 INFO L225 Difference]: With dead ends: 34597 [2022-04-18 18:43:40,194 INFO L226 Difference]: Without dead ends: 34445 [2022-04-18 18:43:40,195 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:43:40,200 INFO L913 BasicCegarLoop]: 56 mSDtfsCounter, 33 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 18:43:40,206 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 112 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 18:43:40,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34445 states. [2022-04-18 18:43:41,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34445 to 34445. [2022-04-18 18:43:41,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34445 states, 34119 states have (on average 2.9647996717371554) internal successors, (101156), 34444 states have internal predecessors, (101156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:41,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34445 states to 34445 states and 101156 transitions. [2022-04-18 18:43:41,836 INFO L78 Accepts]: Start accepts. Automaton has 34445 states and 101156 transitions. Word has length 5 [2022-04-18 18:43:41,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:43:41,837 INFO L478 AbstractCegarLoop]: Abstraction has 34445 states and 101156 transitions. [2022-04-18 18:43:41,838 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:41,838 INFO L276 IsEmpty]: Start isEmpty. Operand 34445 states and 101156 transitions. [2022-04-18 18:43:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 18:43:41,839 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:43:41,839 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-04-18 18:43:41,840 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 18:43:41,840 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 18:43:41,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:43:41,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1571989217, now seen corresponding path program 1 times [2022-04-18 18:43:41,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:43:41,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783061330] [2022-04-18 18:43:41,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:43:41,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:43:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:43:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:43:41,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:43:41,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783061330] [2022-04-18 18:43:41,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783061330] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:43:41,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:43:41,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:43:41,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373288463] [2022-04-18 18:43:41,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:43:41,914 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:43:41,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:43:41,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:43:41,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:43:41,915 INFO L87 Difference]: Start difference. First operand 34445 states and 101156 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 18:43:42,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:43:42,986 INFO L93 Difference]: Finished difference Result 51801 states and 145957 transitions. [2022-04-18 18:43:42,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:43:42,987 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 18:43:42,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:43:43,522 INFO L225 Difference]: With dead ends: 51801 [2022-04-18 18:43:43,535 INFO L226 Difference]: Without dead ends: 51645 [2022-04-18 18:43:43,536 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:43:43,537 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 77 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-18 18:43:43,537 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 79 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-18 18:43:43,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51645 states. [2022-04-18 18:43:45,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51645 to 37306. [2022-04-18 18:43:45,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37306 states, 37025 states have (on average 2.8759756920999324) internal successors, (106483), 37305 states have internal predecessors, (106483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:45,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37306 states to 37306 states and 106483 transitions. [2022-04-18 18:43:45,413 INFO L78 Accepts]: Start accepts. Automaton has 37306 states and 106483 transitions. Word has length 6 [2022-04-18 18:43:45,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:43:45,414 INFO L478 AbstractCegarLoop]: Abstraction has 37306 states and 106483 transitions. [2022-04-18 18:43:45,414 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 18:43:45,415 INFO L276 IsEmpty]: Start isEmpty. Operand 37306 states and 106483 transitions. [2022-04-18 18:43:45,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-18 18:43:45,421 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:43:45,422 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-04-18 18:43:45,422 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 18:43:45,423 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 18:43:45,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:43:45,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1479619506, now seen corresponding path program 1 times [2022-04-18 18:43:45,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:43:45,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483616980] [2022-04-18 18:43:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:43:45,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:43:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:43:45,477 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 18:43:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:43:45,502 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 18:43:45,503 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 18:43:45,503 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-04-18 18:43:45,503 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-04-18 18:43:45,504 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-04-18 18:43:45,504 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-04-18 18:43:45,504 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-04-18 18:43:45,504 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-04-18 18:43:45,505 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-04-18 18:43:45,505 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-04-18 18:43:45,505 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-04-18 18:43:45,505 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-04-18 18:43:45,505 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-04-18 18:43:45,506 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-04-18 18:43:45,506 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-04-18 18:43:45,506 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-04-18 18:43:45,506 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-04-18 18:43:45,507 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-04-18 18:43:45,507 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-04-18 18:43:45,507 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-04-18 18:43:45,507 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-04-18 18:43:45,507 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-04-18 18:43:45,508 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-04-18 18:43:45,508 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-04-18 18:43:45,508 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 18:43:45,509 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 18:43:45,509 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 18:43:45,509 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 18:43:45,534 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 18:43:45,541 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:43:45,542 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 18:43:45,543 INFO L341 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-04-18 18:43:45,546 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:43:45,547 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 277 transitions, 584 flow [2022-04-18 18:43:45,547 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 277 transitions, 584 flow [2022-04-18 18:43:45,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 249 places, 277 transitions, 584 flow [2022-04-18 18:43:45,636 INFO L129 PetriNetUnfolder]: 77/630 cut-off events. [2022-04-18 18:43:45,637 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-04-18 18:43:45,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 630 events. 77/630 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2996 event pairs, 1 based on Foata normal form. 0/506 useless extension candidates. Maximal degree in co-relation 428. Up to 16 conditions per place. [2022-04-18 18:43:45,680 INFO L116 LiptonReduction]: Number of co-enabled transitions 43500 [2022-04-18 18:43:50,522 INFO L131 LiptonReduction]: Checked pairs total: 280201 [2022-04-18 18:43:50,522 INFO L133 LiptonReduction]: Total number of compositions: 209 [2022-04-18 18:43:50,523 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 137 places, 162 transitions, 354 flow [2022-04-18 18:44:24,663 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1073467 states, 1071055 states have (on average 4.739750993179622) internal successors, (5076534), 1073466 states have internal predecessors, (5076534), 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 18:44:26,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 1073467 states, 1071055 states have (on average 4.739750993179622) internal successors, (5076534), 1073466 states have internal predecessors, (5076534), 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 18:44:26,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-04-18 18:44:26,664 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:44:26,664 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-04-18 18:44:26,664 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 18:44:26,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:44:26,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1523139244, now seen corresponding path program 1 times [2022-04-18 18:44:26,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:44:26,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232689129] [2022-04-18 18:44:26,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:44:26,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:44:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:44:26,714 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 18:44:26,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:44:26,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232689129] [2022-04-18 18:44:26,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232689129] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:44:26,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:44:26,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:44:26,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747084354] [2022-04-18 18:44:26,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:44:26,716 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:44:26,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:44:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:44:26,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:44:28,769 INFO L87 Difference]: Start difference. First operand has 1073467 states, 1071055 states have (on average 4.739750993179622) internal successors, (5076534), 1073466 states have internal predecessors, (5076534), 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 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)