./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.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/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-DataRace-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash abac4834eb8b1123405a2c6108c3d30e84ad22df2224a055d262e226b4ba66e1 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 16:53:41,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 16:53:41,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 16:53:41,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 16:53:41,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 16:53:41,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 16:53:41,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 16:53:41,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 16:53:41,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 16:53:41,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 16:53:41,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 16:53:41,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 16:53:41,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 16:53:41,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 16:53:41,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 16:53:41,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 16:53:41,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 16:53:41,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 16:53:41,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 16:53:41,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 16:53:41,653 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 16:53:41,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 16:53:41,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 16:53:41,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 16:53:41,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 16:53:41,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 16:53:41,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 16:53:41,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 16:53:41,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 16:53:41,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 16:53:41,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 16:53:41,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 16:53:41,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 16:53:41,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 16:53:41,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 16:53:41,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 16:53:41,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 16:53:41,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 16:53:41,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 16:53:41,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 16:53:41,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 16:53:41,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 16:53:41,670 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-DataRace-32bit-GemCutter_Default.epf [2022-04-18 16:53:41,691 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 16:53:41,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 16:53:41,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 16:53:41,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 16:53:41,695 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 16:53:41,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 16:53:41,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 16:53:41,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 16:53:41,696 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 16:53:41,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 16:53:41,697 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 16:53:41,697 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 16:53:41,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 16:53:41,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 16:53:41,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 16:53:41,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 16:53:41,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 16:53:41,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 16:53:41,698 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 16:53:41,698 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 16:53:41,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 16:53:41,698 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 16:53:41,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 16:53:41,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 16:53:41,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 16:53:41,699 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-18 16:53:41,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 16:53:41,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:53:41,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 16:53:41,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 16:53:41,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 16:53:41,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 16:53:41,700 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2022-04-18 16:53:41,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 16:53:41,701 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 16:53:41,701 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-04-18 16:53:41,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 16:53:41,701 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-04-18 16:53:41,702 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-04-18 16:53:41,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/UGemCutter-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abac4834eb8b1123405a2c6108c3d30e84ad22df2224a055d262e226b4ba66e1 [2022-04-18 16:53:41,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 16:53:41,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 16:53:41,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 16:53:41,920 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 16:53:41,920 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 16:53:41,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i [2022-04-18 16:53:41,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/977654654/70a7e8d05aae4067aea5664185dfa192/FLAGa22afb7dc [2022-04-18 16:53:42,389 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 16:53:42,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i [2022-04-18 16:53:42,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/977654654/70a7e8d05aae4067aea5664185dfa192/FLAGa22afb7dc [2022-04-18 16:53:42,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/977654654/70a7e8d05aae4067aea5664185dfa192 [2022-04-18 16:53:42,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 16:53:42,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 16:53:42,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 16:53:42,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 16:53:42,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 16:53:42,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:53:42" (1/1) ... [2022-04-18 16:53:42,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a95cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:53:42, skipping insertion in model container [2022-04-18 16:53:42,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:53:42" (1/1) ... [2022-04-18 16:53:42,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 16:53:42,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 16:53:42,898 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i[938,951] [2022-04-18 16:53:43,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:53:43,009 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 16:53:43,016 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i[938,951] [2022-04-18 16:53:43,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:53:43,056 INFO L208 MainTranslator]: Completed translation [2022-04-18 16:53:43,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:53:43 WrapperNode [2022-04-18 16:53:43,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 16:53:43,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 16:53:43,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 16:53:43,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 16:53:43,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:53:43" (1/1) ... [2022-04-18 16:53:43,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:53:43" (1/1) ... [2022-04-18 16:53:43,092 INFO L137 Inliner]: procedures = 174, calls = 30, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 174 [2022-04-18 16:53:43,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 16:53:43,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 16:53:43,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 16:53:43,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 16:53:43,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:53:43" (1/1) ... [2022-04-18 16:53:43,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:53:43" (1/1) ... [2022-04-18 16:53:43,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:53:43" (1/1) ... [2022-04-18 16:53:43,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:53:43" (1/1) ... [2022-04-18 16:53:43,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:53:43" (1/1) ... [2022-04-18 16:53:43,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:53:43" (1/1) ... [2022-04-18 16:53:43,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:53:43" (1/1) ... [2022-04-18 16:53:43,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 16:53:43,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 16:53:43,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 16:53:43,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 16:53:43,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:53:43" (1/1) ... [2022-04-18 16:53:43,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:53:43,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2022-04-18 16:53:43,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 16:53:43,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 16:53:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 16:53:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 16:53:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 16:53:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 16:53:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 16:53:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2022-04-18 16:53:43,201 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2022-04-18 16:53:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2022-04-18 16:53:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2022-04-18 16:53:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 16:53:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 16:53:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 16:53:43,203 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 16:53:43,334 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 16:53:43,336 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 16:53:43,582 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 16:53:43,663 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 16:53:43,664 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-18 16:53:43,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:53:43 BoogieIcfgContainer [2022-04-18 16:53:43,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 16:53:43,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 16:53:43,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 16:53:43,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 16:53:43,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 04:53:42" (1/3) ... [2022-04-18 16:53:43,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb96e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:53:43, skipping insertion in model container [2022-04-18 16:53:43,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:53:43" (2/3) ... [2022-04-18 16:53:43,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb96e13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:53:43, skipping insertion in model container [2022-04-18 16:53:43,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:53:43" (3/3) ... [2022-04-18 16:53:43,673 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd-2.i [2022-04-18 16:53:43,677 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 16:53:43,677 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 16:53:43,677 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-04-18 16:53:43,677 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 16:53:43,735 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 16:53:43,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-04-18 16:53:43,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2022-04-18 16:53:43,781 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-04-18 16:53:43,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-04-18 16:53:43,814 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == dec_aThread1of1ForFork0 ======== [2022-04-18 16:53:43,820 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=PARTIAL_ORDER_FA, 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 16:53:43,821 INFO L341 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-04-18 16:53:43,929 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting dec_aErr0ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-04-18 16:53:43,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:53:43,933 INFO L85 PathProgramCache]: Analyzing trace with hash -361719037, now seen corresponding path program 1 times [2022-04-18 16:53:43,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:53:43,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687906910] [2022-04-18 16:53:43,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:53:43,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:53:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:53:44,081 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 16:53:44,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:53:44,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687906910] [2022-04-18 16:53:44,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687906910] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:53:44,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:53:44,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:53:44,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956059931] [2022-04-18 16:53:44,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:53:44,086 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 16:53:44,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:53:44,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 16:53:44,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 16:53:44,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 16:53:44,104 INFO L478 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-04-18 16:53:44,107 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 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 16:53:44,107 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 16:53:44,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 16:53:44,117 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 16:53:44,117 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting dec_aErr0ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-04-18 16:53:44,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:53:44,118 INFO L85 PathProgramCache]: Analyzing trace with hash -557689322, now seen corresponding path program 1 times [2022-04-18 16:53:44,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:53:44,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954865127] [2022-04-18 16:53:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:53:44,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:53:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:53:44,190 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 16:53:44,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:53:44,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954865127] [2022-04-18 16:53:44,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954865127] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:53:44,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:53:44,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:53:44,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174650253] [2022-04-18 16:53:44,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:53:44,192 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:53:44,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:53:44,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:53:44,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:53:44,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 16:53:44,194 INFO L478 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-04-18 16:53:44,194 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 28.5) internal successors, (57), 3 states have internal predecessors, (57), 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 16:53:44,194 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 16:53:44,194 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 16:53:44,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 16:53:44,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:53:44,219 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 16:53:44,220 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting dec_aErr1ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-04-18 16:53:44,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:53:44,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1807506653, now seen corresponding path program 1 times [2022-04-18 16:53:44,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:53:44,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311466718] [2022-04-18 16:53:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:53:44,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:53:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:53:44,274 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 16:53:44,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:53:44,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311466718] [2022-04-18 16:53:44,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311466718] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:53:44,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:53:44,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:53:44,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238017928] [2022-04-18 16:53:44,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:53:44,276 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:53:44,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:53:44,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:53:44,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:53:44,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 16:53:44,277 INFO L478 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-04-18 16:53:44,277 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 30.5) internal successors, (61), 3 states have internal predecessors, (61), 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 16:53:44,277 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 16:53:44,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:53:44,278 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 16:53:44,290 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,308 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,321 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,346 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,352 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,366 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,368 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,402 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,412 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,414 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,422 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,427 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,437 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,444 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,496 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,499 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,502 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,505 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,508 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,509 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,509 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,510 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,511 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,512 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,513 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,513 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,519 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,522 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,524 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,527 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,530 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,531 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,532 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,533 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,534 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,535 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,536 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,536 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,558 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,562 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,566 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,581 WARN L322 ript$VariableManager]: TermVariabe |v_dec_a___VERIFIER_atomic_dec_a_#t~nondet3#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,593 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,595 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,601 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,605 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,610 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,613 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,617 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,620 WARN L322 ript$VariableManager]: TermVariabe |v_dec_b___VERIFIER_atomic_dec_b_#t~nondet4#1_57| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-04-18 16:53:44,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 16:53:44,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:53:44,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:53:44,625 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 16:53:44,625 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting dec_aErr1ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-04-18 16:53:44,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:53:44,625 INFO L85 PathProgramCache]: Analyzing trace with hash 46903864, now seen corresponding path program 1 times [2022-04-18 16:53:44,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:53:44,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562502039] [2022-04-18 16:53:44,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:53:44,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:53:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:53:44,744 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-04-18 16:53:44,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:53:44,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562502039] [2022-04-18 16:53:44,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562502039] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:53:44,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:53:44,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-18 16:53:44,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839169655] [2022-04-18 16:53:44,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:53:44,746 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:53:44,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:53:44,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:53:44,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:53:44,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 16:53:44,747 INFO L478 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-04-18 16:53:44,747 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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 16:53:44,747 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 16:53:44,747 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:53:44,747 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:53:44,748 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 16:53:44,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 16:53:44,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:53:44,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:53:44,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 16:53:44,812 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 16:53:44,812 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting dec_aErr1ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-04-18 16:53:44,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:53:44,813 INFO L85 PathProgramCache]: Analyzing trace with hash -463630313, now seen corresponding path program 1 times [2022-04-18 16:53:44,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:53:44,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321211498] [2022-04-18 16:53:44,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:53:44,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:53:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 16:53:44,924 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 16:53:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 16:53:45,025 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 16:53:45,025 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 16:53:45,026 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location dec_aErr1ASSERT_VIOLATIONDATA_RACE (6 of 7 remaining) [2022-04-18 16:53:45,027 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr0ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2022-04-18 16:53:45,027 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr2ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2022-04-18 16:53:45,027 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr3ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2022-04-18 16:53:45,028 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr4ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2022-04-18 16:53:45,028 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr5ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2022-04-18 16:53:45,028 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr6ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2022-04-18 16:53:45,028 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 16:53:45,036 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-18 16:53:45,037 INFO L306 ceAbstractionStarter]: Result for error location dec_aThread1of1ForFork0 was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN (1/3) [2022-04-18 16:53:45,040 INFO L227 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-04-18 16:53:45,040 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-18 16:53:45,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 04:53:45 BasicIcfg [2022-04-18 16:53:45,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-18 16:53:45,106 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-04-18 16:53:45,106 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-04-18 16:53:45,106 INFO L275 PluginConnector]: Witness Printer initialized [2022-04-18 16:53:45,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:53:43" (3/4) ... [2022-04-18 16:53:45,109 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-04-18 16:53:45,111 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-04-18 16:53:45,113 INFO L158 Benchmark]: Toolchain (without parser) took 2364.63ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 88.6MB in the beginning and 63.4MB in the end (delta: 25.2MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. [2022-04-18 16:53:45,113 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 115.3MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 16:53:45,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.38ms. Allocated memory is still 115.3MB. Free memory was 88.3MB in the beginning and 78.0MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-04-18 16:53:45,117 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.99ms. Allocated memory is still 115.3MB. Free memory was 78.0MB in the beginning and 75.5MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-04-18 16:53:45,118 INFO L158 Benchmark]: Boogie Preprocessor took 29.82ms. Allocated memory is still 115.3MB. Free memory was 75.5MB in the beginning and 73.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 16:53:45,119 INFO L158 Benchmark]: RCFGBuilder took 541.66ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 73.4MB in the beginning and 109.8MB in the end (delta: -36.3MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2022-04-18 16:53:45,119 INFO L158 Benchmark]: TraceAbstraction took 1436.90ms. Allocated memory is still 138.4MB. Free memory was 109.1MB in the beginning and 63.4MB in the end (delta: 45.7MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2022-04-18 16:53:45,119 INFO L158 Benchmark]: Witness Printer took 5.09ms. Allocated memory is still 138.4MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 16:53:45,123 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 115.3MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.38ms. Allocated memory is still 115.3MB. Free memory was 88.3MB in the beginning and 78.0MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.99ms. Allocated memory is still 115.3MB. Free memory was 78.0MB in the beginning and 75.5MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.82ms. Allocated memory is still 115.3MB. Free memory was 75.5MB in the beginning and 73.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 541.66ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 73.4MB in the beginning and 109.8MB in the end (delta: -36.3MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1436.90ms. Allocated memory is still 138.4MB. Free memory was 109.1MB in the beginning and 63.4MB in the end (delta: 45.7MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. * Witness Printer took 5.09ms. Allocated memory is still 138.4MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 4398, positive: 3381, positive conditional: 1363, positive unconditional: 2018, negative: 1017, negative conditional: 993, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3419, positive: 3381, positive conditional: 1363, positive unconditional: 2018, negative: 38, negative conditional: 14, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 3419, positive: 3381, positive conditional: 1363, positive unconditional: 2018, negative: 38, negative conditional: 14, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3468, positive: 3381, positive conditional: 1340, positive unconditional: 2041, negative: 87, negative conditional: 49, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 3468, positive: 3381, positive conditional: 258, positive unconditional: 3123, negative: 87, negative conditional: 2, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3468, positive: 3381, positive conditional: 258, positive unconditional: 3123, negative: 87, negative conditional: 2, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1710, positive: 1684, positive conditional: 13, positive unconditional: 1671, negative: 26, negative conditional: 1, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1710, positive: 1488, positive conditional: 0, positive unconditional: 1488, negative: 222, negative conditional: 0, negative unconditional: 222, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 222, positive: 196, positive conditional: 12, positive unconditional: 184, negative: 26, negative conditional: 1, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 262, positive: 184, positive conditional: 14, positive unconditional: 170, negative: 77, negative conditional: 2, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3468, positive: 1697, positive conditional: 245, positive unconditional: 1452, negative: 61, negative conditional: 1, negative unconditional: 60, unknown: 1710, unknown conditional: 14, unknown unconditional: 1696] , Statistics on independence cache: Total cache size (in pairs): 1710, Positive cache size: 1684, Positive conditional cache size: 13, Positive unconditional cache size: 1671, Negative cache size: 26, Negative conditional cache size: 1, Negative unconditional cache size: 25, Eliminated conditions: 1129, Maximal queried relation: 3, Independence queries for same thread: 979 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.3s, Number of persistent set computation: 228, Number of trivial persistent sets: 212, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2042, positive: 2018, positive conditional: 0, positive unconditional: 2018, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 4398, positive: 3381, positive conditional: 1363, positive unconditional: 2018, negative: 1017, negative conditional: 993, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3419, positive: 3381, positive conditional: 1363, positive unconditional: 2018, negative: 38, negative conditional: 14, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 3419, positive: 3381, positive conditional: 1363, positive unconditional: 2018, negative: 38, negative conditional: 14, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3468, positive: 3381, positive conditional: 1340, positive unconditional: 2041, negative: 87, negative conditional: 49, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 3468, positive: 3381, positive conditional: 258, positive unconditional: 3123, negative: 87, negative conditional: 2, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3468, positive: 3381, positive conditional: 258, positive unconditional: 3123, negative: 87, negative conditional: 2, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1710, positive: 1684, positive conditional: 13, positive unconditional: 1671, negative: 26, negative conditional: 1, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1710, positive: 1488, positive conditional: 0, positive unconditional: 1488, negative: 222, negative conditional: 0, negative unconditional: 222, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 222, positive: 196, positive conditional: 12, positive unconditional: 184, negative: 26, negative conditional: 1, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 262, positive: 184, positive conditional: 14, positive unconditional: 170, negative: 77, negative conditional: 2, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3468, positive: 1697, positive conditional: 245, positive unconditional: 1452, negative: 61, negative conditional: 1, negative unconditional: 60, unknown: 1710, unknown conditional: 14, unknown unconditional: 1696] , Statistics on independence cache: Total cache size (in pairs): 1710, Positive cache size: 1684, Positive conditional cache size: 13, Positive unconditional cache size: 1671, Negative cache size: 26, Negative conditional cache size: 1, Negative unconditional cache size: 25, Eliminated conditions: 1129, Maximal queried relation: 3, Independence queries for same thread: 979 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - DataRaceFoundResult [Line: 709]: Data race detected Data race detected The following path leads to a data race: [L695] 0 unsigned a, b; VAL [a=0, b=0] [L747] 0 unsigned a_in=__VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=-8589934593, a=0, a_in=4294967295, b=0] [L748] 0 unsigned b_in=__VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=-6012954214, a=0, a_in=4294967295, b=0, b_in=2576980378] [L749] CALL 0 assume_abort_if_not(a_in>0) [L15] COND FALSE 0 !(!cond) VAL [\old(cond)=1, a=0, b=0, cond=1] [L749] RET 0 assume_abort_if_not(a_in>0) [L750] CALL 0 assume_abort_if_not(b_in>0) [L15] COND FALSE 0 !(!cond) VAL [\old(cond)=1, a=0, b=0, cond=1] [L750] RET 0 assume_abort_if_not(b_in>0) [L751] CALL 0 start(a_in, b_in) [L726] 0 a=a_in VAL [\old(a_in)=4294967295, \old(b_in)=2576980378, a=-8589934593, a_in=4294967295, b=0, b_in=2576980378] [L727] 0 b=b_in VAL [\old(a_in)=4294967295, \old(b_in)=2576980378, a=-8589934593, a_in=4294967295, b=-6012954214, b_in=2576980378] [L728] 0 pthread_t t1, t2; VAL [\old(a_in)=4294967295, \old(b_in)=2576980378, a=-8589934593, a_in=4294967295, b=-6012954214, b_in=2576980378, t1={6:0}, t2={5:0}] [L729] FCALL, FORK 0 pthread_create(&t1, 0, dec_a, 0) VAL [\old(a_in)=4294967295, \old(b_in)=2576980378, a=-8589934593, a_in=4294967295, b=-6012954214, b_in=2576980378, pthread_create(&t1, 0, dec_a, 0)=-1, t1={6:0}, t2={5:0}] [L709] 1 a!=b VAL [a=-8589934593, arg={0:0}, arg={0:0}, b=-6012954214] [L709] 1 a!=b VAL [a=-8589934593, arg={0:0}, arg={0:0}, b=-6012954214] [L709] 1 a!=b VAL [a=-8589934593, arg={0:0}, arg={0:0}, b=-6012954214] [L709] 1 a!=b VAL [a=-8589934593, arg={0:0}, arg={0:0}, b=-6012954214] [L709] COND TRUE 1 a!=b VAL [a=-8589934593, arg={0:0}, arg={0:0}, b=-6012954214] [L730] FCALL, FORK 0 pthread_create(&t2, 0, dec_b, 0) VAL [\old(a_in)=4294967295, \old(b_in)=2576980378, a=-8589934593, a_in=4294967295, b=-6012954214, b_in=2576980378, pthread_create(&t2, 0, dec_b, 0)=0, t1={6:0}, t2={5:0}] [L711] CALL 1 __VERIFIER_atomic_dec_a() [L698] 1 a>b [L698] COND TRUE 1 a>b [L699] EXPR 1 a-b [L699] 1 a=a-b [L711] RET 1 __VERIFIER_atomic_dec_a() [L709] 1 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-6012954214] [L718] 2 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-6012954214] [L709] 1 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-6012954214] [L718] 2 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-6012954214] [L731] EXPR 0 \read(t1) VAL [\old(a_in)=4294967295, \old(b_in)=2576980378, \read(t1)=-1, a=-2576980379, a_in=4294967295, b=-6012954214, b_in=2576980378, t1={6:0}, t2={5:0}] [L709] 1 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-6012954214] [L718] 2 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-6012954214] [L709] 1 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-6012954214] [L718] 2 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-6012954214] [L709] COND TRUE 1 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-6012954214] [L718] COND TRUE 2 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-6012954214] [L711] CALL 1 __VERIFIER_atomic_dec_a() [L698] 1 a>b [L698] COND FALSE 1 !(a>b) [L711] RET 1 __VERIFIER_atomic_dec_a() [L720] CALL 2 __VERIFIER_atomic_dec_b() [L703] 2 b>a [L703] COND TRUE 2 b>a [L704] EXPR 2 b-a [L704] 2 b=b-a [L720] RET 2 __VERIFIER_atomic_dec_b() [L709] 1 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-3435973835] [L718] 2 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-3435973835] [L731] 0 pthread_join(t1, 0) VAL [\old(a_in)=4294967295, \old(b_in)=2576980378, \read(t1)=-1, a=-2576980379, a_in=4294967295, b=-3435973835, b_in=2576980378, t1={6:0}, t2={5:0}] [L709] 1 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-3435973835] [L718] 2 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-3435973835] [L709] 1 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-3435973835] [L718] 2 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-3435973835] [L709] 1 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-3435973835] [L718] 2 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-3435973835] [L709] COND TRUE 1 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-3435973835] [L718] COND TRUE 2 a!=b VAL [a=-2576980379, arg={0:0}, arg={0:0}, b=-3435973835] [L711] CALL 1 __VERIFIER_atomic_dec_a() [L698] 1 a>b [L698] COND TRUE 1 a>b [L699] EXPR 1 a-b [L699] 1 a=a-b [L711] RET 1 __VERIFIER_atomic_dec_a() [L709] 1 a!=b VAL [a=858993456, arg={0:0}, arg={0:0}, b=-3435973835] [L720] CALL 2 __VERIFIER_atomic_dec_b() [L703] 2 b>a [L703] COND TRUE 2 b>a [L704] EXPR 2 b-a [L704] 2 b=b-a [L720] RET 2 __VERIFIER_atomic_dec_b() [L718] 2 a!=b VAL [a=858993456, arg={0:0}, arg={0:0}, b=-4294967291] [L709] 1 a!=b VAL [a=858993456, arg={0:0}, arg={0:0}, b=-4294967291] Now there is a data race on ~b~0 between C: b=b-a [704] and C: a!=b [709] - UnprovableResult [Line: 709]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: 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 for errors in thread instance: dec_aThread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 222 locations, 35 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 5, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.5s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 383 NumberOfCodeBlocks, 383 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 276 ConstructedInterpolants, 0 QuantifiedInterpolants, 527 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 38/38 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 could not prove your program: unable to determine feasibility of some traces [2022-04-18 16:53:45,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2022-04-18 16:53:45,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-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