./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_22-deref_read_racefree.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_22-deref_read_racefree.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 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:42:57,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:42:57,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:42:57,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:42:57,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:42:57,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:42:57,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:42:57,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:42:57,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:42:57,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:42:57,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:42:57,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:42:57,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:42:57,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:42:57,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:42:57,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:42:57,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:42:57,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:42:57,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:42:57,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:42:57,682 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:42:57,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:42:57,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:42:57,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:42:57,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:42:57,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:42:57,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:42:57,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:42:57,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:42:57,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:42:57,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:42:57,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:42:57,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:42:57,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:42:57,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:42:57,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:42:57,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:42:57,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:42:57,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:42:57,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:42:57,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:42:57,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:42:57,709 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 18:42:57,733 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:42:57,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:42:57,736 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:42:57,736 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:42:57,736 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:42:57,737 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:42:57,737 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 18:42:57,737 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 18:42:57,737 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 18:42:57,738 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 18:42:57,738 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 18:42:57,738 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 18:42:57,738 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 18:42:57,738 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 18:42:57,739 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 18:42:57,739 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 18:42:57,739 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 18:42:57,739 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 18:42:57,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:42:57,740 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:42:57,740 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:42:57,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 18:42:57,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:42:57,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:42:57,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:42:57,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:42:57,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:42:57,742 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:42:57,742 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:42:57,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:42:57,742 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:42:57,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:42:57,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:42:57,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:42:57,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:42:57,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:42:57,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:42:57,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:42:57,744 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 18:42:57,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 18:42:57,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:42:57,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 18:42:57,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 18:42:57,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 [2022-04-18 18:42:57,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:42:57,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:42:57,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:42:57,959 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:42:57,959 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:42:57,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i [2022-04-18 18:42:58,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/44e0f06ce/c06a54dc967c4e3c90838821539fc395/FLAGc9d34bf56 [2022-04-18 18:42:58,401 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:42:58,402 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i [2022-04-18 18:42:58,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/44e0f06ce/c06a54dc967c4e3c90838821539fc395/FLAGc9d34bf56 [2022-04-18 18:42:58,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/44e0f06ce/c06a54dc967c4e3c90838821539fc395 [2022-04-18 18:42:58,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:42:58,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:42:58,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:42:58,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:42:58,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:42:58,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:42:58" (1/1) ... [2022-04-18 18:42:58,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68cfac8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:58, skipping insertion in model container [2022-04-18 18:42:58,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:42:58" (1/1) ... [2022-04-18 18:42:58,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:42:58,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:42:58,702 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_22-deref_read_racefree.i[30176,30189] [2022-04-18 18:42:58,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:42:58,742 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:42:58,773 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_22-deref_read_racefree.i[30176,30189] [2022-04-18 18:42:58,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:42:58,822 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:42:58,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:58 WrapperNode [2022-04-18 18:42:58,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:42:58,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:42:58,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:42:58,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:42:58,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:58" (1/1) ... [2022-04-18 18:42:58,854 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:58" (1/1) ... [2022-04-18 18:42:58,876 INFO L137 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2022-04-18 18:42:58,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:42:58,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:42:58,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:42:58,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:42:58,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:58" (1/1) ... [2022-04-18 18:42:58,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:58" (1/1) ... [2022-04-18 18:42:58,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:58" (1/1) ... [2022-04-18 18:42:58,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:58" (1/1) ... [2022-04-18 18:42:58,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:58" (1/1) ... [2022-04-18 18:42:58,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:58" (1/1) ... [2022-04-18 18:42:58,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:58" (1/1) ... [2022-04-18 18:42:58,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:42:58,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:42:58,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:42:58,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:42:58,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:58" (1/1) ... [2022-04-18 18:42:58,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:42:58,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:42:58,948 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 18:42:58,955 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 18:42:58,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 18:42:58,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 18:42:58,977 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 18:42:58,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:42:58,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:42:58,977 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-04-18 18:42:58,977 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-04-18 18:42:58,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:42:58,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 18:42:58,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:42:58,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:42:58,980 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 18:42:59,080 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:42:59,082 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:42:59,271 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:42:59,276 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:42:59,277 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-04-18 18:42:59,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:42:59 BoogieIcfgContainer [2022-04-18 18:42:59,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:42:59,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:42:59,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:42:59,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:42:59,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:42:58" (1/3) ... [2022-04-18 18:42:59,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a78617a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:42:59, skipping insertion in model container [2022-04-18 18:42:59,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:58" (2/3) ... [2022-04-18 18:42:59,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a78617a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:42:59, skipping insertion in model container [2022-04-18 18:42:59,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:42:59" (3/3) ... [2022-04-18 18:42:59,284 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2022-04-18 18:42:59,288 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:42:59,288 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:42:59,288 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-04-18 18:42:59,288 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:42:59,329 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 18:42:59,371 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:42:59,375 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 18:42:59,375 INFO L341 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-04-18 18:42:59,394 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:42:59,402 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 156 transitions, 317 flow [2022-04-18 18:42:59,404 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 156 transitions, 317 flow [2022-04-18 18:42:59,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 156 transitions, 317 flow [2022-04-18 18:42:59,448 INFO L129 PetriNetUnfolder]: 14/206 cut-off events. [2022-04-18 18:42:59,449 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 18:42:59,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 206 events. 14/206 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 579 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2022-04-18 18:42:59,457 INFO L116 LiptonReduction]: Number of co-enabled transitions 7392 [2022-04-18 18:43:02,837 INFO L131 LiptonReduction]: Checked pairs total: 40736 [2022-04-18 18:43:02,837 INFO L133 LiptonReduction]: Total number of compositions: 149 [2022-04-18 18:43:02,843 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 63 transitions, 131 flow [2022-04-18 18:43:02,875 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 700 states, 653 states have (on average 2.3169984686064318) internal successors, (1513), 699 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:02,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 700 states, 653 states have (on average 2.3169984686064318) internal successors, (1513), 699 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-04-18 18:43:02,882 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:43:02,882 INFO L499 BasicCegarLoop]: trace histogram [1, 1] [2022-04-18 18:43:02,882 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-04-18 18:43:02,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:43:02,886 INFO L85 PathProgramCache]: Analyzing trace with hash 18518, now seen corresponding path program 1 times [2022-04-18 18:43:02,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:43:02,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757673749] [2022-04-18 18:43:02,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:43:02,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:43:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:43:02,996 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 18:43:02,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:43:02,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757673749] [2022-04-18 18:43:02,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757673749] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:43:02,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:43:02,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 18:43:02,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508079214] [2022-04-18 18:43:02,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:43:03,001 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 18:43:03,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:43:03,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 18:43:03,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:43:03,017 INFO L87 Difference]: Start difference. First operand has 700 states, 653 states have (on average 2.3169984686064318) internal successors, (1513), 699 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:03,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:43:03,078 INFO L93 Difference]: Finished difference Result 557 states and 1050 transitions. [2022-04-18 18:43:03,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 18:43:03,079 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-04-18 18:43:03,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:43:03,093 INFO L225 Difference]: With dead ends: 557 [2022-04-18 18:43:03,093 INFO L226 Difference]: Without dead ends: 547 [2022-04-18 18:43:03,094 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:43:03,096 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 18:43:03,097 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 18:43:03,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-04-18 18:43:03,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 547. [2022-04-18 18:43:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 532 states have (on average 1.9398496240601504) internal successors, (1032), 546 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 1032 transitions. [2022-04-18 18:43:03,139 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 1032 transitions. Word has length 2 [2022-04-18 18:43:03,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:43:03,139 INFO L478 AbstractCegarLoop]: Abstraction has 547 states and 1032 transitions. [2022-04-18 18:43:03,139 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:03,140 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 1032 transitions. [2022-04-18 18:43:03,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 18:43:03,140 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:43:03,140 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-04-18 18:43:03,140 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 18:43:03,141 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2022-04-18 18:43:03,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:43:03,141 INFO L85 PathProgramCache]: Analyzing trace with hash -111196285, now seen corresponding path program 1 times [2022-04-18 18:43:03,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:43:03,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278573985] [2022-04-18 18:43:03,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:43:03,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:43:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:43:03,171 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 18:43:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:43:03,216 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 18:43:03,217 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 18:43:03,218 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-04-18 18:43:03,219 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2022-04-18 18:43:03,220 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2022-04-18 18:43:03,220 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2022-04-18 18:43:03,221 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2022-04-18 18:43:03,221 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2022-04-18 18:43:03,221 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2022-04-18 18:43:03,226 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2022-04-18 18:43:03,226 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2022-04-18 18:43:03,226 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2022-04-18 18:43:03,226 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2022-04-18 18:43:03,226 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2022-04-18 18:43:03,226 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2022-04-18 18:43:03,227 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2022-04-18 18:43:03,227 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2022-04-18 18:43:03,227 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2022-04-18 18:43:03,228 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2022-04-18 18:43:03,228 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 18:43:03,230 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 18:43:03,231 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 18:43:03,231 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 18:43:03,257 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 18:43:03,262 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:43:03,264 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 18:43:03,266 INFO L341 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-04-18 18:43:03,268 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:43:03,268 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 223 transitions, 458 flow [2022-04-18 18:43:03,269 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 223 transitions, 458 flow [2022-04-18 18:43:03,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 212 places, 223 transitions, 458 flow [2022-04-18 18:43:03,305 INFO L129 PetriNetUnfolder]: 24/328 cut-off events. [2022-04-18 18:43:03,305 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 18:43:03,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 328 events. 24/328 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1256 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 207. Up to 6 conditions per place. [2022-04-18 18:43:03,322 INFO L116 LiptonReduction]: Number of co-enabled transitions 23628 [2022-04-18 18:43:07,547 INFO L131 LiptonReduction]: Checked pairs total: 198437 [2022-04-18 18:43:07,548 INFO L133 LiptonReduction]: Total number of compositions: 207 [2022-04-18 18:43:07,549 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 101 places, 110 transitions, 232 flow [2022-04-18 18:43:08,189 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 29614 states, 29280 states have (on average 3.32301912568306) internal successors, (97298), 29613 states have internal predecessors, (97298), 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 18:43:08,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 29614 states, 29280 states have (on average 3.32301912568306) internal successors, (97298), 29613 states have internal predecessors, (97298), 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 18:43:08,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-04-18 18:43:08,234 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:43:08,234 INFO L499 BasicCegarLoop]: trace histogram [1, 1] [2022-04-18 18:43:08,235 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-04-18 18:43:08,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:43:08,237 INFO L85 PathProgramCache]: Analyzing trace with hash 33829, now seen corresponding path program 1 times [2022-04-18 18:43:08,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:43:08,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985170926] [2022-04-18 18:43:08,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:43:08,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:43:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:43:08,260 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 18:43:08,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:43:08,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985170926] [2022-04-18 18:43:08,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985170926] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:43:08,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:43:08,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 18:43:08,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793282830] [2022-04-18 18:43:08,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:43:08,262 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 18:43:08,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:43:08,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 18:43:08,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:43:08,307 INFO L87 Difference]: Start difference. First operand has 29614 states, 29280 states have (on average 3.32301912568306) internal successors, (97298), 29613 states have internal predecessors, (97298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:08,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:43:08,608 INFO L93 Difference]: Finished difference Result 22617 states and 64715 transitions. [2022-04-18 18:43:08,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 18:43:08,609 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-04-18 18:43:08,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:43:08,794 INFO L225 Difference]: With dead ends: 22617 [2022-04-18 18:43:08,794 INFO L226 Difference]: Without dead ends: 22584 [2022-04-18 18:43:08,794 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:43:08,798 INFO L913 BasicCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 18:43:08,802 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 18:43:08,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22584 states. [2022-04-18 18:43:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22584 to 22584. [2022-04-18 18:43:09,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22584 states, 22500 states have (on average 2.8722222222222222) internal successors, (64625), 22583 states have internal predecessors, (64625), 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 18:43:09,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22584 states to 22584 states and 64625 transitions. [2022-04-18 18:43:09,591 INFO L78 Accepts]: Start accepts. Automaton has 22584 states and 64625 transitions. Word has length 2 [2022-04-18 18:43:09,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:43:09,591 INFO L478 AbstractCegarLoop]: Abstraction has 22584 states and 64625 transitions. [2022-04-18 18:43:09,592 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:09,592 INFO L276 IsEmpty]: Start isEmpty. Operand 22584 states and 64625 transitions. [2022-04-18 18:43:09,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-04-18 18:43:09,593 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:43:09,593 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:43:09,593 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 18:43:09,593 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-04-18 18:43:09,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:43:09,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1008978241, now seen corresponding path program 1 times [2022-04-18 18:43:09,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:43:09,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663273979] [2022-04-18 18:43:09,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:43:09,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:43:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:43:09,623 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 18:43:09,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:43:09,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663273979] [2022-04-18 18:43:09,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663273979] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:43:09,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:43:09,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:43:09,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849783201] [2022-04-18 18:43:09,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:43:09,625 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:43:09,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:43:09,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:43:09,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:43:09,626 INFO L87 Difference]: Start difference. First operand 22584 states and 64625 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:09,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:43:09,866 INFO L93 Difference]: Finished difference Result 22575 states and 64616 transitions. [2022-04-18 18:43:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:43:09,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-04-18 18:43:09,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:43:09,918 INFO L225 Difference]: With dead ends: 22575 [2022-04-18 18:43:09,919 INFO L226 Difference]: Without dead ends: 22575 [2022-04-18 18:43:09,919 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 18:43:09,920 INFO L913 BasicCegarLoop]: 50 mSDtfsCounter, 38 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 18:43:09,920 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 100 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 18:43:10,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22575 states. [2022-04-18 18:43:10,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22575 to 22575. [2022-04-18 18:43:10,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22575 states, 22492 states have (on average 2.8728436777520896) internal successors, (64616), 22574 states have internal predecessors, (64616), 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 18:43:10,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22575 states to 22575 states and 64616 transitions. [2022-04-18 18:43:10,713 INFO L78 Accepts]: Start accepts. Automaton has 22575 states and 64616 transitions. Word has length 10 [2022-04-18 18:43:10,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:43:10,713 INFO L478 AbstractCegarLoop]: Abstraction has 22575 states and 64616 transitions. [2022-04-18 18:43:10,713 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:43:10,714 INFO L276 IsEmpty]: Start isEmpty. Operand 22575 states and 64616 transitions. [2022-04-18 18:43:10,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-18 18:43:10,717 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:43:10,717 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-04-18 18:43:10,717 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 18:43:10,719 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-04-18 18:43:10,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:43:10,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1632785300, now seen corresponding path program 1 times [2022-04-18 18:43:10,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:43:10,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673523963] [2022-04-18 18:43:10,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:43:10,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:43:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:43:10,759 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 18:43:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:43:10,783 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 18:43:10,786 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 18:43:10,787 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2022-04-18 18:43:10,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2022-04-18 18:43:10,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2022-04-18 18:43:10,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2022-04-18 18:43:10,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2022-04-18 18:43:10,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2022-04-18 18:43:10,788 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2022-04-18 18:43:10,788 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2022-04-18 18:43:10,788 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2022-04-18 18:43:10,788 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2022-04-18 18:43:10,788 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2022-04-18 18:43:10,788 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2022-04-18 18:43:10,788 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2022-04-18 18:43:10,789 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2022-04-18 18:43:10,789 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2022-04-18 18:43:10,789 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2022-04-18 18:43:10,789 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2022-04-18 18:43:10,789 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2022-04-18 18:43:10,789 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2022-04-18 18:43:10,789 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2022-04-18 18:43:10,790 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2022-04-18 18:43:10,790 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2022-04-18 18:43:10,790 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2022-04-18 18:43:10,791 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 18:43:10,791 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 18:43:10,791 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 18:43:10,791 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 18:43:10,810 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 18:43:10,811 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:43:10,812 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 18:43:10,812 INFO L341 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-04-18 18:43:10,815 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:43:10,815 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 290 transitions, 601 flow [2022-04-18 18:43:10,816 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 290 transitions, 601 flow [2022-04-18 18:43:10,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 275 places, 290 transitions, 601 flow [2022-04-18 18:43:10,883 INFO L129 PetriNetUnfolder]: 34/450 cut-off events. [2022-04-18 18:43:10,884 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 18:43:10,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 450 events. 34/450 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1935 event pairs, 0 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 332. Up to 8 conditions per place. [2022-04-18 18:43:10,911 INFO L116 LiptonReduction]: Number of co-enabled transitions 48708 [2022-04-18 18:43:16,940 INFO L131 LiptonReduction]: Checked pairs total: 416467 [2022-04-18 18:43:16,940 INFO L133 LiptonReduction]: Total number of compositions: 262 [2022-04-18 18:43:16,941 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 141 places, 154 transitions, 329 flow [2022-04-18 18:43:46,095 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1125612 states, 1123269 states have (on average 4.426244292328908) internal successors, (4971863), 1125611 states have internal predecessors, (4971863), 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 18:43:48,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 1125612 states, 1123269 states have (on average 4.426244292328908) internal successors, (4971863), 1125611 states have internal predecessors, (4971863), 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 18:43:48,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-04-18 18:43:48,314 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:43:48,314 INFO L499 BasicCegarLoop]: trace histogram [1, 1] [2022-04-18 18:43:48,314 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2022-04-18 18:43:48,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:43:48,318 INFO L85 PathProgramCache]: Analyzing trace with hash 53185, now seen corresponding path program 1 times [2022-04-18 18:43:48,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:43:48,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003417782] [2022-04-18 18:43:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:43:48,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:43:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:43:48,363 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 18:43:48,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:43:48,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003417782] [2022-04-18 18:43:48,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003417782] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:43:48,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:43:48,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 18:43:48,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702015198] [2022-04-18 18:43:48,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:43:48,365 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 18:43:48,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:43:48,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 18:43:48,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:43:50,502 INFO L87 Difference]: Start difference. First operand has 1125612 states, 1123269 states have (on average 4.426244292328908) internal successors, (4971863), 1125611 states have internal predecessors, (4971863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)