./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_10-equ_rc.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_10-equ_rc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd55bbfa1518dd7815f07d7de8c2030374bbc7b7998290c12df563b95f65f709 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 20:06:15,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:06:15,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:06:15,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:06:15,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:06:15,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:06:15,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:06:15,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:06:15,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:06:15,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:06:15,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:06:15,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:06:15,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:06:15,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:06:15,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:06:15,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:06:15,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:06:15,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:06:15,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:06:15,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:06:15,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:06:15,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:06:15,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:06:15,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:06:15,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:06:15,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:06:15,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:06:15,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:06:15,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:06:15,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:06:15,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:06:15,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:06:15,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:06:15,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:06:15,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:06:15,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:06:15,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:06:15,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:06:15,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:06:15,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:06:15,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:06:15,835 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:06:15,867 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:06:15,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:06:15,869 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:06:15,869 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:06:15,870 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:06:15,870 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:06:15,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:06:15,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:06:15,871 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:06:15,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:06:15,872 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:06:15,872 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:06:15,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:06:15,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:06:15,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:06:15,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:06:15,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:06:15,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:06:15,873 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:06:15,873 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:06:15,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:06:15,874 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:06:15,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:06:15,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:06:15,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:06:15,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:06:15,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:06:15,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:06:15,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:06:15,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:06:15,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:06:15,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:06:15,876 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:06:15,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:06:15,877 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:06:15,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:06:15,877 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:06:15,877 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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/UAutomizer-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd55bbfa1518dd7815f07d7de8c2030374bbc7b7998290c12df563b95f65f709 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:06:16,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:06:16,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:06:16,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:06:16,171 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:06:16,172 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:06:16,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_10-equ_rc.i [2023-08-31 20:06:17,299 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:06:17,597 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:06:17,598 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_10-equ_rc.i [2023-08-31 20:06:17,618 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5669821d7/8b123ac9faf24b22a7a13eb33d7056c1/FLAGb5b224bec [2023-08-31 20:06:17,630 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5669821d7/8b123ac9faf24b22a7a13eb33d7056c1 [2023-08-31 20:06:17,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:06:17,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:06:17,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:06:17,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:06:17,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:06:17,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:06:17" (1/1) ... [2023-08-31 20:06:17,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4387a83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:06:17, skipping insertion in model container [2023-08-31 20:06:17,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:06:17" (1/1) ... [2023-08-31 20:06:17,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:06:17,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:06:18,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:06:18,134 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:06:18,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:06:18,259 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:06:18,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:06:18 WrapperNode [2023-08-31 20:06:18,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:06:18,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:06:18,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:06:18,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:06:18,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:06:18" (1/1) ... [2023-08-31 20:06:18,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:06:18" (1/1) ... [2023-08-31 20:06:18,328 INFO L138 Inliner]: procedures = 265, calls = 29, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 69 [2023-08-31 20:06:18,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:06:18,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:06:18,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:06:18,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:06:18,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:06:18" (1/1) ... [2023-08-31 20:06:18,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:06:18" (1/1) ... [2023-08-31 20:06:18,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:06:18" (1/1) ... [2023-08-31 20:06:18,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:06:18" (1/1) ... [2023-08-31 20:06:18,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:06:18" (1/1) ... [2023-08-31 20:06:18,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:06:18" (1/1) ... [2023-08-31 20:06:18,359 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:06:18" (1/1) ... [2023-08-31 20:06:18,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:06:18" (1/1) ... [2023-08-31 20:06:18,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:06:18,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:06:18,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:06:18,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:06:18,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:06:18" (1/1) ... [2023-08-31 20:06:18,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:06:18,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:06:18,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 20:06:18,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 20:06:18,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:06:18,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:06:18,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:06:18,433 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:06:18,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:06:18,434 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:06:18,434 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:06:18,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:06:18,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:06:18,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:06:18,436 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 20:06:18,603 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:06:18,605 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:06:18,796 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:06:18,802 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:06:18,802 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 20:06:18,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:06:18 BoogieIcfgContainer [2023-08-31 20:06:18,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:06:18,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:06:18,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:06:18,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:06:18,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:06:17" (1/3) ... [2023-08-31 20:06:18,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab29637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:06:18, skipping insertion in model container [2023-08-31 20:06:18,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:06:18" (2/3) ... [2023-08-31 20:06:18,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab29637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:06:18, skipping insertion in model container [2023-08-31 20:06:18,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:06:18" (3/3) ... [2023-08-31 20:06:18,816 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_10-equ_rc.i [2023-08-31 20:06:18,823 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:06:18,831 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:06:18,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-31 20:06:18,832 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:06:18,907 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 20:06:18,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 86 transitions, 177 flow [2023-08-31 20:06:19,001 INFO L130 PetriNetUnfolder]: 1/85 cut-off events. [2023-08-31 20:06:19,002 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:06:19,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 85 events. 1/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-08-31 20:06:19,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 86 transitions, 177 flow [2023-08-31 20:06:19,008 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 85 transitions, 173 flow [2023-08-31 20:06:19,012 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:06:19,023 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 85 transitions, 173 flow [2023-08-31 20:06:19,025 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 85 transitions, 173 flow [2023-08-31 20:06:19,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 85 transitions, 173 flow [2023-08-31 20:06:19,059 INFO L130 PetriNetUnfolder]: 1/85 cut-off events. [2023-08-31 20:06:19,059 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:06:19,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 85 events. 1/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-08-31 20:06:19,061 INFO L119 LiptonReduction]: Number of co-enabled transitions 570 [2023-08-31 20:06:22,746 INFO L134 LiptonReduction]: Checked pairs total: 2739 [2023-08-31 20:06:22,746 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-08-31 20:06:22,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 20:06:22,763 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40997ec5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:06:22,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 20:06:22,768 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-08-31 20:06:22,768 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:06:22,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:06:22,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:06:22,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2023-08-31 20:06:22,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:06:22,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1094503810, now seen corresponding path program 1 times [2023-08-31 20:06:22,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:06:22,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870743080] [2023-08-31 20:06:22,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:06:22,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:06:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:06:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:06:23,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:06:23,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870743080] [2023-08-31 20:06:23,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870743080] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:06:23,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:06:23,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 20:06:23,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843260643] [2023-08-31 20:06:23,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:06:23,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:06:23,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:06:23,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:06:23,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:06:23,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 155 [2023-08-31 20:06:23,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 43 flow. Second operand has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 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) [2023-08-31 20:06:23,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:06:23,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 155 [2023-08-31 20:06:23,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:06:23,769 INFO L130 PetriNetUnfolder]: 80/201 cut-off events. [2023-08-31 20:06:23,769 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:06:23,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 201 events. 80/201 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 783 event pairs, 22 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 380. Up to 124 conditions per place. [2023-08-31 20:06:23,775 INFO L137 encePairwiseOnDemand]: 144/155 looper letters, 25 selfloop transitions, 22 changer transitions 4/53 dead transitions. [2023-08-31 20:06:23,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 53 transitions, 211 flow [2023-08-31 20:06:23,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:06:23,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:06:23,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 484 transitions. [2023-08-31 20:06:23,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204301075268817 [2023-08-31 20:06:23,789 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 484 transitions. [2023-08-31 20:06:23,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 484 transitions. [2023-08-31 20:06:23,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:06:23,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 484 transitions. [2023-08-31 20:06:23,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.66666666666667) internal successors, (484), 6 states have internal predecessors, (484), 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) [2023-08-31 20:06:23,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 155.0) internal successors, (1085), 7 states have internal predecessors, (1085), 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) [2023-08-31 20:06:23,802 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 155.0) internal successors, (1085), 7 states have internal predecessors, (1085), 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) [2023-08-31 20:06:23,803 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 43 flow. Second operand 6 states and 484 transitions. [2023-08-31 20:06:23,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 53 transitions, 211 flow [2023-08-31 20:06:23,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 53 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 20:06:23,807 INFO L231 Difference]: Finished difference. Result has 33 places, 41 transitions, 192 flow [2023-08-31 20:06:23,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=33, PETRI_TRANSITIONS=41} [2023-08-31 20:06:23,811 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2023-08-31 20:06:23,811 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 41 transitions, 192 flow [2023-08-31 20:06:23,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 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) [2023-08-31 20:06:23,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:06:23,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:06:23,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:06:23,812 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2023-08-31 20:06:23,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:06:23,813 INFO L85 PathProgramCache]: Analyzing trace with hash -2063186106, now seen corresponding path program 1 times [2023-08-31 20:06:23,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:06:23,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569395933] [2023-08-31 20:06:23,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:06:23,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:06:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 20:06:24,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 20:06:24,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 20:06:24,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569395933] [2023-08-31 20:06:24,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569395933] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 20:06:24,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 20:06:24,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 20:06:24,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067282802] [2023-08-31 20:06:24,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 20:06:24,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 20:06:24,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 20:06:24,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 20:06:24,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 20:06:24,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 155 [2023-08-31 20:06:24,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 41 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 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) [2023-08-31 20:06:24,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 20:06:24,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 155 [2023-08-31 20:06:24,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 20:06:24,237 INFO L130 PetriNetUnfolder]: 119/281 cut-off events. [2023-08-31 20:06:24,238 INFO L131 PetriNetUnfolder]: For 110/114 co-relation queries the response was YES. [2023-08-31 20:06:24,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 281 events. 119/281 cut-off events. For 110/114 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1190 event pairs, 21 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 818. Up to 180 conditions per place. [2023-08-31 20:06:24,240 INFO L137 encePairwiseOnDemand]: 144/155 looper letters, 41 selfloop transitions, 26 changer transitions 14/84 dead transitions. [2023-08-31 20:06:24,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 84 transitions, 534 flow [2023-08-31 20:06:24,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 20:06:24,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 20:06:24,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 472 transitions. [2023-08-31 20:06:24,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075268817204301 [2023-08-31 20:06:24,244 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 472 transitions. [2023-08-31 20:06:24,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 472 transitions. [2023-08-31 20:06:24,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 20:06:24,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 472 transitions. [2023-08-31 20:06:24,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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) [2023-08-31 20:06:24,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 155.0) internal successors, (1085), 7 states have internal predecessors, (1085), 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) [2023-08-31 20:06:24,250 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 155.0) internal successors, (1085), 7 states have internal predecessors, (1085), 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) [2023-08-31 20:06:24,250 INFO L175 Difference]: Start difference. First operand has 33 places, 41 transitions, 192 flow. Second operand 6 states and 472 transitions. [2023-08-31 20:06:24,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 84 transitions, 534 flow [2023-08-31 20:06:24,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 84 transitions, 534 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 20:06:24,255 INFO L231 Difference]: Finished difference. Result has 43 places, 62 transitions, 416 flow [2023-08-31 20:06:24,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=416, PETRI_PLACES=43, PETRI_TRANSITIONS=62} [2023-08-31 20:06:24,256 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2023-08-31 20:06:24,256 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 62 transitions, 416 flow [2023-08-31 20:06:24,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 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) [2023-08-31 20:06:24,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:06:24,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:06:24,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:06:24,257 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2023-08-31 20:06:24,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:06:24,258 INFO L85 PathProgramCache]: Analyzing trace with hash 714477190, now seen corresponding path program 1 times [2023-08-31 20:06:24,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:06:24,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527039371] [2023-08-31 20:06:24,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:06:24,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:06:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:06:24,294 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:06:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:06:24,328 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:06:24,328 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:06:24,329 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 4 remaining) [2023-08-31 20:06:24,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-31 20:06:24,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 4 remaining) [2023-08-31 20:06:24,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 4 remaining) [2023-08-31 20:06:24,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:06:24,332 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-31 20:06:24,337 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 20:06:24,337 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 20:06:24,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 08:06:24 BasicIcfg [2023-08-31 20:06:24,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 20:06:24,366 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 20:06:24,366 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 20:06:24,366 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 20:06:24,367 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:06:18" (3/4) ... [2023-08-31 20:06:24,369 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-31 20:06:24,369 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 20:06:24,370 INFO L158 Benchmark]: Toolchain (without parser) took 6737.35ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 53.9MB in the beginning and 48.2MB in the end (delta: 5.6MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2023-08-31 20:06:24,371 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory was 38.8MB in the beginning and 38.7MB in the end (delta: 49.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 20:06:24,371 INFO L158 Benchmark]: CACSL2BoogieTranslator took 626.56ms. Allocated memory is still 77.6MB. Free memory was 53.7MB in the beginning and 45.3MB in the end (delta: 8.4MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2023-08-31 20:06:24,372 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.70ms. Allocated memory is still 77.6MB. Free memory was 45.3MB in the beginning and 42.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 20:06:24,372 INFO L158 Benchmark]: Boogie Preprocessor took 39.35ms. Allocated memory is still 77.6MB. Free memory was 42.9MB in the beginning and 41.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 20:06:24,372 INFO L158 Benchmark]: RCFGBuilder took 439.90ms. Allocated memory is still 77.6MB. Free memory was 41.5MB in the beginning and 53.6MB in the end (delta: -12.2MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2023-08-31 20:06:24,373 INFO L158 Benchmark]: TraceAbstraction took 5553.35ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 52.7MB in the beginning and 49.0MB in the end (delta: 3.7MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2023-08-31 20:06:24,373 INFO L158 Benchmark]: Witness Printer took 3.83ms. Allocated memory is still 94.4MB. Free memory was 49.0MB in the beginning and 48.2MB in the end (delta: 783.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 20:06:24,376 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory was 38.8MB in the beginning and 38.7MB in the end (delta: 49.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 626.56ms. Allocated memory is still 77.6MB. Free memory was 53.7MB in the beginning and 45.3MB in the end (delta: 8.4MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.70ms. Allocated memory is still 77.6MB. Free memory was 45.3MB in the beginning and 42.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.35ms. Allocated memory is still 77.6MB. Free memory was 42.9MB in the beginning and 41.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 439.90ms. Allocated memory is still 77.6MB. Free memory was 41.5MB in the beginning and 53.6MB in the end (delta: -12.2MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * TraceAbstraction took 5553.35ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 52.7MB in the beginning and 49.0MB in the end (delta: 3.7MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. * Witness Printer took 3.83ms. Allocated memory is still 94.4MB. Free memory was 49.0MB in the beginning and 48.2MB in the end (delta: 783.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 88 PlacesBefore, 24 PlacesAfterwards, 85 TransitionsBefore, 20 TransitionsAfterwards, 570 CoEnabledTransitionPairs, 7 FixpointIterations, 47 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 69 TotalNumberOfCompositions, 2739 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1016, independent: 772, independent conditional: 0, independent unconditional: 772, dependent: 244, dependent conditional: 0, dependent unconditional: 244, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 276, independent: 249, independent conditional: 0, independent unconditional: 249, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1016, independent: 523, independent conditional: 0, independent unconditional: 523, dependent: 217, dependent conditional: 0, dependent unconditional: 217, unknown: 276, unknown conditional: 0, unknown unconditional: 276] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 1019]: Data race detected Data race detected The following path leads to a data race: [L989-L993] 0 struct s { int datum; struct q inside; pthread_mutex_t mutex; } A, B; [L1003] 0 int x = __VERIFIER_nondet_int(); [L1004] 0 pthread_t id; [L1005] 0 struct s *s; [L1006] 0 int *d; [L1007] 0 pthread_mutex_t *m; [L1008] COND FALSE 0 !(\read(x)) [L1012] 0 s = &B [L1013] 0 x++ [L1015] 0 m = &s->mutex [L1016] 0 d = &s->datum [L1017] FCALL, FORK 0 pthread_create(&id,((void *)0),t_fun,((void *)0)) VAL [A={1:0}, B={2:0}, arg={0:0}, d={2:0}, id={6:0}, m={2:12}, pthread_create(&id,((void *)0),t_fun,((void *)0))=-1, s={2:0}, x++=37, x++=39, x=1] [L1019] 0 *d = 8 VAL [A={1:0}, B={2:0}, arg={0:0}, arg={0:0}, d={2:0}, id={6:0}, m={2:12}, pthread_mutex_lock(&A.mutex)=0, s={2:0}, x++=37, x++=39, x=1] [L996] 1 B.datum = 5 VAL [A={1:0}, B={2:0}, arg={0:0}, arg={0:0}] [L1019] 0 *d = 8 VAL [*d = 8=40, A={1:0}, B={2:0}, arg={0:0}, arg={0:0}, d={2:0}, id={6:0}, m={2:12}, s={2:0}, x++=37, x++=39, x=1] [L1019] 0 *d = 8 VAL [*d = 8=40, A={1:0}, B.datum = 5=38, B={2:0}, arg={0:0}, arg={0:0}, d={2:0}, id={6:0}, m={2:12}, s={2:0}, x++=37, x++=39, x=1] Now there is a data race (on the heap) between C: B.datum = 5 [996] and C: *d = 8 [1019] - UnprovableResult [Line: 1017]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 996]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 103 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 96 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 339 IncrementalHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 0 mSDtfsCounter, 339 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=416occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 178 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-31 20:06:24,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE