./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/33_double_lock_p1_vs.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-ext/33_double_lock_p1_vs.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 3937112f59473340c79cc2d7ab59a9fe9e4faa83d54303e5490f5452d86b21aa --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 17:25:16,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 17:25:16,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 17:25:16,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 17:25:16,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 17:25:16,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 17:25:16,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 17:25:16,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 17:25:16,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 17:25:16,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 17:25:16,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 17:25:16,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 17:25:16,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 17:25:16,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 17:25:16,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 17:25:16,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 17:25:16,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 17:25:16,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 17:25:16,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 17:25:16,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 17:25:16,763 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 17:25:16,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 17:25:16,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 17:25:16,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 17:25:16,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 17:25:16,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 17:25:16,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 17:25:16,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 17:25:16,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 17:25:16,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 17:25:16,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 17:25:16,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 17:25:16,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 17:25:16,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 17:25:16,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 17:25:16,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 17:25:16,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 17:25:16,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 17:25:16,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 17:25:16,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 17:25:16,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 17:25:16,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 17:25:16,783 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-DataRace-32bit-GemCutter_Default.epf [2022-04-18 17:25:16,816 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 17:25:16,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 17:25:16,817 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 17:25:16,817 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 17:25:16,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 17:25:16,818 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 17:25:16,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 17:25:16,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 17:25:16,819 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 17:25:16,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 17:25:16,820 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 17:25:16,820 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 17:25:16,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 17:25:16,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 17:25:16,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 17:25:16,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 17:25:16,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 17:25:16,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 17:25:16,822 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 17:25:16,823 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 17:25:16,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 17:25:16,823 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 17:25:16,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 17:25:16,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 17:25:16,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 17:25:16,824 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-18 17:25:16,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 17:25:16,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 17:25:16,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 17:25:16,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 17:25:16,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 17:25:16,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 17:25:16,825 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2022-04-18 17:25:16,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 17:25:16,826 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 17:25:16,826 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-04-18 17:25:16,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 17:25:16,826 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2022-04-18 17:25:16,827 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2022-04-18 17:25:16,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3937112f59473340c79cc2d7ab59a9fe9e4faa83d54303e5490f5452d86b21aa [2022-04-18 17:25:17,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 17:25:17,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 17:25:17,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 17:25:17,098 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 17:25:17,098 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 17:25:17,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/33_double_lock_p1_vs.i [2022-04-18 17:25:17,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/6e192f13b/1ad900baba834b2c8f74ed0e8a6d7015/FLAGb9dceeec8 [2022-04-18 17:25:17,609 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 17:25:17,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/33_double_lock_p1_vs.i [2022-04-18 17:25:17,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/6e192f13b/1ad900baba834b2c8f74ed0e8a6d7015/FLAGb9dceeec8 [2022-04-18 17:25:17,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/6e192f13b/1ad900baba834b2c8f74ed0e8a6d7015 [2022-04-18 17:25:17,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 17:25:17,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 17:25:17,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 17:25:17,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 17:25:17,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 17:25:17,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 05:25:17" (1/1) ... [2022-04-18 17:25:17,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7865fae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:25:17, skipping insertion in model container [2022-04-18 17:25:17,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 05:25:17" (1/1) ... [2022-04-18 17:25:17,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 17:25:18,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 17:25:18,310 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-ext/33_double_lock_p1_vs.i[30807,30820] [2022-04-18 17:25:18,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 17:25:18,326 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 17:25:18,374 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-ext/33_double_lock_p1_vs.i[30807,30820] [2022-04-18 17:25:18,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 17:25:18,420 INFO L208 MainTranslator]: Completed translation [2022-04-18 17:25:18,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:25:18 WrapperNode [2022-04-18 17:25:18,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 17:25:18,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 17:25:18,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 17:25:18,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 17:25:18,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:25:18" (1/1) ... [2022-04-18 17:25:18,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:25:18" (1/1) ... [2022-04-18 17:25:18,492 INFO L137 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 281 [2022-04-18 17:25:18,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 17:25:18,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 17:25:18,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 17:25:18,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 17:25:18,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:25:18" (1/1) ... [2022-04-18 17:25:18,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:25:18" (1/1) ... [2022-04-18 17:25:18,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:25:18" (1/1) ... [2022-04-18 17:25:18,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:25:18" (1/1) ... [2022-04-18 17:25:18,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:25:18" (1/1) ... [2022-04-18 17:25:18,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:25:18" (1/1) ... [2022-04-18 17:25:18,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:25:18" (1/1) ... [2022-04-18 17:25:18,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 17:25:18,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 17:25:18,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 17:25:18,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 17:25:18,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:25:18" (1/1) ... [2022-04-18 17:25:18,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 17:25:18,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2022-04-18 17:25:18,570 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 17:25:18,579 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 17:25:18,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 17:25:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-04-18 17:25:18,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-04-18 17:25:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 17:25:18,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 17:25:18,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 17:25:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 17:25:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 17:25:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 17:25:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 17:25:18,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 17:25:18,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 17:25:18,605 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 17:25:18,689 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 17:25:18,690 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 17:25:19,262 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 17:25:19,488 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 17:25:19,488 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-18 17:25:19,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 05:25:19 BoogieIcfgContainer [2022-04-18 17:25:19,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 17:25:19,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 17:25:19,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 17:25:19,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 17:25:19,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 05:25:17" (1/3) ... [2022-04-18 17:25:19,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@556ebb93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 05:25:19, skipping insertion in model container [2022-04-18 17:25:19,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 05:25:18" (2/3) ... [2022-04-18 17:25:19,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@556ebb93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 05:25:19, skipping insertion in model container [2022-04-18 17:25:19,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 05:25:19" (3/3) ... [2022-04-18 17:25:19,497 INFO L111 eAbstractionObserver]: Analyzing ICFG 33_double_lock_p1_vs.i [2022-04-18 17:25:19,501 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 17:25:19,501 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 17:25:19,501 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-04-18 17:25:19,502 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 17:25:19,549 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 17:25:19,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-04-18 17:25:19,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2022-04-18 17:25:19,587 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 17:25:19,601 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 17:25:19,631 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork1 ======== [2022-04-18 17:25:19,642 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 17:25:19,642 INFO L341 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-04-18 17:25:21,094 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-04-18 17:25:21,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 17:25:21,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1968686768, now seen corresponding path program 1 times [2022-04-18 17:25:21,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 17:25:21,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029707919] [2022-04-18 17:25:21,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 17:25:21,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 17:25:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 17:25:21,327 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 17:25:21,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 17:25:21,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029707919] [2022-04-18 17:25:21,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029707919] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 17:25:21,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 17:25:21,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 17:25:21,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125329549] [2022-04-18 17:25:21,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 17:25:21,335 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 17:25:21,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 17:25:21,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 17:25:21,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 17:25:21,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:25:21,358 INFO L478 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-04-18 17:25:21,359 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 29.0) internal successors, (29), 2 states have internal predecessors, (29), 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 17:25:21,360 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:25:21,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:25:21,429 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 17:25:21,430 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-04-18 17:25:21,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 17:25:21,432 INFO L85 PathProgramCache]: Analyzing trace with hash -480697181, now seen corresponding path program 1 times [2022-04-18 17:25:21,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 17:25:21,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838850242] [2022-04-18 17:25:21,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 17:25:21,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 17:25:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 17:25:21,531 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 17:25:21,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 17:25:21,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838850242] [2022-04-18 17:25:21,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838850242] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 17:25:21,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 17:25:21,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 17:25:21,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145250235] [2022-04-18 17:25:21,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 17:25:21,534 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 17:25:21,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 17:25:21,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 17:25:21,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 17:25:21,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:25:21,536 INFO L478 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-04-18 17:25:21,536 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 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 17:25:21,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:25:21,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:25:33,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:25:33,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 17:25:33,504 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 17:25:33,504 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-04-18 17:25:33,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 17:25:33,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1672876495, now seen corresponding path program 1 times [2022-04-18 17:25:33,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 17:25:33,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621976555] [2022-04-18 17:25:33,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 17:25:33,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 17:25:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 17:25:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-18 17:25:33,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 17:25:33,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621976555] [2022-04-18 17:25:33,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621976555] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 17:25:33,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408335994] [2022-04-18 17:25:33,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 17:25:33,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 17:25:33,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2022-04-18 17:25:33,882 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 17:25:33,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-18 17:25:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 17:25:34,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 67 conjunts are in the unsatisfiable core [2022-04-18 17:25:34,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 17:25:34,319 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-04-18 17:25:34,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-04-18 17:25:34,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-04-18 17:25:34,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-04-18 17:25:34,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-04-18 17:25:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 17:25:34,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 17:25:34,912 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_177 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_177) |c_~#mutexa~0.base|) |c_~#mutexa~0.offset|) 0))) is different from false [2022-04-18 17:25:34,919 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-04-18 17:25:34,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2022-04-18 17:25:34,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2022-04-18 17:25:34,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-04-18 17:25:35,077 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-04-18 17:25:35,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-04-18 17:25:35,095 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2022-04-18 17:25:35,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408335994] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 17:25:35,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 17:25:35,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 20 [2022-04-18 17:25:35,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140633048] [2022-04-18 17:25:35,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 17:25:35,097 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-18 17:25:35,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 17:25:35,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-18 17:25:35,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=256, Unknown=1, NotChecked=34, Total=380 [2022-04-18 17:25:35,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:25:35,099 INFO L478 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-04-18 17:25:35,099 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.45) internal successors, (149), 20 states have internal predecessors, (149), 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 17:25:35,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:25:35,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-04-18 17:25:35,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:25:53,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 17:25:53,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 17:25:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-18 17:25:53,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-18 17:25:53,815 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-18 17:25:53,816 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-04-18 17:25:53,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 17:25:53,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1659910573, now seen corresponding path program 1 times [2022-04-18 17:25:53,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 17:25:53,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372111826] [2022-04-18 17:25:53,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 17:25:53,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 17:25:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 17:25:53,906 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 17:25:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 17:25:53,958 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 17:25:53,958 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 17:25:53,959 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 10 remaining) [2022-04-18 17:25:53,960 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2022-04-18 17:25:53,960 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2022-04-18 17:25:53,961 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2022-04-18 17:25:53,961 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2022-04-18 17:25:53,961 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2022-04-18 17:25:53,964 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2022-04-18 17:25:53,964 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2022-04-18 17:25:53,964 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2022-04-18 17:25:53,964 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2022-04-18 17:25:53,965 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 17:25:53,970 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-04-18 17:25:53,972 INFO L306 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork1 was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN (1/3) [2022-04-18 17:25:53,975 INFO L227 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-04-18 17:25:53,975 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-18 17:25:54,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 05:25:54 BasicIcfg [2022-04-18 17:25:54,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-18 17:25:54,033 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-04-18 17:25:54,033 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-04-18 17:25:54,033 INFO L275 PluginConnector]: Witness Printer initialized [2022-04-18 17:25:54,034 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 05:25:19" (3/4) ... [2022-04-18 17:25:54,036 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-04-18 17:25:54,036 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-04-18 17:25:54,037 INFO L158 Benchmark]: Toolchain (without parser) took 36092.37ms. Allocated memory was 92.3MB in the beginning and 146.8MB in the end (delta: 54.5MB). Free memory was 56.4MB in the beginning and 73.1MB in the end (delta: -16.7MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2022-04-18 17:25:54,037 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory was 62.1MB in the beginning and 62.1MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 17:25:54,037 INFO L158 Benchmark]: CACSL2BoogieTranslator took 474.22ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 56.2MB in the beginning and 83.9MB in the end (delta: -27.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-04-18 17:25:54,038 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.94ms. Allocated memory is still 117.4MB. Free memory was 83.9MB in the beginning and 80.3MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 17:25:54,038 INFO L158 Benchmark]: Boogie Preprocessor took 38.25ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 77.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-04-18 17:25:54,039 INFO L158 Benchmark]: RCFGBuilder took 957.11ms. Allocated memory is still 117.4MB. Free memory was 77.1MB in the beginning and 68.9MB in the end (delta: 8.2MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2022-04-18 17:25:54,039 INFO L158 Benchmark]: TraceAbstraction took 34540.61ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 68.9MB in the beginning and 73.1MB in the end (delta: -4.2MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2022-04-18 17:25:54,039 INFO L158 Benchmark]: Witness Printer took 3.18ms. Allocated memory is still 146.8MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 17:25:54,041 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory was 62.1MB in the beginning and 62.1MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 474.22ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 56.2MB in the beginning and 83.9MB in the end (delta: -27.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.94ms. Allocated memory is still 117.4MB. Free memory was 83.9MB in the beginning and 80.3MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.25ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 77.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 957.11ms. Allocated memory is still 117.4MB. Free memory was 77.1MB in the beginning and 68.9MB in the end (delta: 8.2MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. * TraceAbstraction took 34540.61ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 68.9MB in the beginning and 73.1MB in the end (delta: -4.2MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. * Witness Printer took 3.18ms. Allocated memory is still 146.8MB. Free memory is still 73.1MB. 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: 9465, positive: 8009, positive conditional: 4222, positive unconditional: 3787, negative: 1456, negative conditional: 1402, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8105, positive: 8009, positive conditional: 4222, positive unconditional: 3787, negative: 96, negative conditional: 42, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 8105, positive: 8009, positive conditional: 4222, positive unconditional: 3787, negative: 96, negative conditional: 42, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8177, positive: 8009, positive conditional: 4147, positive unconditional: 3862, negative: 168, negative conditional: 72, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 8177, positive: 8009, positive conditional: 2510, positive unconditional: 5499, negative: 168, negative conditional: 35, negative unconditional: 133, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 8177, positive: 8009, positive conditional: 2510, positive unconditional: 5499, negative: 168, negative conditional: 35, negative unconditional: 133, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2914, positive: 2850, positive conditional: 20, positive unconditional: 2830, negative: 64, negative conditional: 8, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2914, positive: 2533, positive conditional: 0, positive unconditional: 2533, negative: 381, negative conditional: 0, negative unconditional: 381, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 381, positive: 317, positive conditional: 20, positive unconditional: 297, negative: 49, negative conditional: 8, negative unconditional: 41, unknown: 15, unknown conditional: 0, unknown unconditional: 15] , SemanticIndependenceRelation.Query Time [ms]: [ total: 31206, positive: 1263, positive conditional: 153, positive unconditional: 1109, negative: 383, negative conditional: 150, negative unconditional: 233, unknown: 29560, unknown conditional: 0, unknown unconditional: 29560] ], Cache Queries: [ total: 8177, positive: 5159, positive conditional: 2490, positive unconditional: 2669, negative: 104, negative conditional: 27, negative unconditional: 77, unknown: 2914, unknown conditional: 28, unknown unconditional: 2886] , Statistics on independence cache: Total cache size (in pairs): 2914, Positive cache size: 2850, Positive conditional cache size: 20, Positive unconditional cache size: 2830, Negative cache size: 64, Negative conditional cache size: 8, Negative unconditional cache size: 56, Eliminated conditions: 1674, Maximal queried relation: 2, Independence queries for same thread: 1360 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 31.0s, Number of persistent set computation: 599, Number of trivial persistent sets: 557, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3841, positive: 3787, positive conditional: 0, positive unconditional: 3787, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 9465, positive: 8009, positive conditional: 4222, positive unconditional: 3787, negative: 1456, negative conditional: 1402, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8105, positive: 8009, positive conditional: 4222, positive unconditional: 3787, negative: 96, negative conditional: 42, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 8105, positive: 8009, positive conditional: 4222, positive unconditional: 3787, negative: 96, negative conditional: 42, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8177, positive: 8009, positive conditional: 4147, positive unconditional: 3862, negative: 168, negative conditional: 72, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 8177, positive: 8009, positive conditional: 2510, positive unconditional: 5499, negative: 168, negative conditional: 35, negative unconditional: 133, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 8177, positive: 8009, positive conditional: 2510, positive unconditional: 5499, negative: 168, negative conditional: 35, negative unconditional: 133, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2914, positive: 2850, positive conditional: 20, positive unconditional: 2830, negative: 64, negative conditional: 8, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2914, positive: 2533, positive conditional: 0, positive unconditional: 2533, negative: 381, negative conditional: 0, negative unconditional: 381, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 381, positive: 317, positive conditional: 20, positive unconditional: 297, negative: 49, negative conditional: 8, negative unconditional: 41, unknown: 15, unknown conditional: 0, unknown unconditional: 15] , SemanticIndependenceRelation.Query Time [ms]: [ total: 31206, positive: 1263, positive conditional: 153, positive unconditional: 1109, negative: 383, negative conditional: 150, negative unconditional: 233, unknown: 29560, unknown conditional: 0, unknown unconditional: 29560] ], Cache Queries: [ total: 8177, positive: 5159, positive conditional: 2490, positive unconditional: 2669, negative: 104, negative conditional: 27, negative unconditional: 77, unknown: 2914, unknown conditional: 28, unknown unconditional: 2886] , Statistics on independence cache: Total cache size (in pairs): 2914, Positive cache size: 2850, Positive conditional cache size: 20, Positive unconditional cache size: 2830, Negative cache size: 64, Negative conditional cache size: 8, Negative unconditional cache size: 56, Eliminated conditions: 1674, Maximal queried relation: 2, Independence queries for same thread: 1360 - 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: 729]: Data race detected Data race detected The following path leads to a data race: [L689] 0 int count = 0; VAL [count=0] [L708] 0 int mutexa = 0; VAL [count=0, mutexa={3:0}] [L709] 0 int mutexb = 0; VAL [count=0, mutexa={3:0}, mutexb={4:0}] [L747] 0 pthread_t t; VAL [count=0, mutexa={3:0}, mutexb={4:0}, t={5:0}] [L748] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [count=0, mutexa={3:0}, mutexb={4:0}, pthread_create(&t, 0, thr1, 0)=-2, t={5:0}] [L726] COND TRUE 1 1 VAL [arg={0:0}, arg={0:0}, count=0, mutexa={3:0}, mutexb={4:0}] [L728] CALL 1 __VERIFIER_atomic_acquire(&mutexa) [L692] EXPR 1 \read(*m) [L692] EXPR 1 *m==0 [L692] CALL 1 assume_abort_if_not(*m==0) [L4] COND FALSE 1 !(!cond) [L692] RET 1 assume_abort_if_not(*m==0) [L693] 1 *m = 1 [L728] RET 1 __VERIFIER_atomic_acquire(&mutexa) [L749] COND TRUE 0 1 VAL [count=0, mutexa={3:0}, mutexb={4:0}, t={5:0}] [L729] EXPR 1 count >= -1 VAL [arg={0:0}, arg={0:0}, count=0, mutexa={3:0}, mutexb={4:0}] [L729] EXPR 1 count >= -1 VAL [arg={0:0}, arg={0:0}, count=0, mutexa={3:0}, mutexb={4:0}] [L729] COND FALSE 1 !(!(count >= -1)) VAL [arg={0:0}, arg={0:0}, count=0, mutexa={3:0}, mutexb={4:0}] [L730] CALL 1 __VERIFIER_atomic_acquire(&mutexb) [L692] EXPR 1 \read(*m) [L692] EXPR 1 *m==0 [L692] CALL 1 assume_abort_if_not(*m==0) [L4] COND FALSE 1 !(!cond) [L692] RET 1 assume_abort_if_not(*m==0) [L693] 1 *m = 1 [L730] RET 1 __VERIFIER_atomic_acquire(&mutexb) [L751] FCALL, FORK 0 pthread_create(&t, 0, thr2, 0) VAL [count=0, mutexa={3:0}, mutexb={4:0}, pthread_create(&t, 0, thr2, 0)=-1, t={5:0}] [L731] EXPR 1 count == 0 VAL [arg={0:0}, arg={0:0}, count=0, mutexa={3:0}, mutexb={4:0}] [L731] EXPR 1 count == 0 VAL [arg={0:0}, arg={0:0}, count=0, mutexa={3:0}, mutexb={4:0}] [L731] COND FALSE 1 !(!(count == 0)) VAL [arg={0:0}, arg={0:0}, count=0, mutexa={3:0}, mutexb={4:0}] [L739] COND FALSE 2 !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, arg={0:0}, arg={0:0}, count=0, mutexa={3:0}, mutexb={4:0}] [L749] COND TRUE 0 1 VAL [count=0, mutexa={3:0}, mutexb={4:0}, t={5:0}] [L732] CALL 1 __VERIFIER_atomic_release(&mutexb) [L697] EXPR 1 \read(*m) [L697] EXPR 1 *m==1 [L697] CALL 1 assume_abort_if_not(*m==1) [L4] COND FALSE 1 !(!cond) [L697] RET 1 assume_abort_if_not(*m==1) [L698] 1 *m = 0 [L732] RET 1 __VERIFIER_atomic_release(&mutexb) [L733] CALL 1 __VERIFIER_atomic_release(&mutexa) [L697] EXPR 1 \read(*m) [L697] EXPR 1 *m==1 [L697] CALL 1 assume_abort_if_not(*m==1) [L4] COND FALSE 1 !(!cond) [L697] RET 1 assume_abort_if_not(*m==1) [L698] 1 *m = 0 [L733] RET 1 __VERIFIER_atomic_release(&mutexa) [L742] CALL 2 my_thread2() [L726] COND TRUE 1 1 VAL [arg={0:0}, arg={0:0}, count=0, mutexa={3:0}, mutexb={4:0}] [L719] CALL 2 __VERIFIER_atomic_acquire(&mutexb) [L692] EXPR 2 \read(*m) [L692] EXPR 2 *m==0 [L692] CALL 2 assume_abort_if_not(*m==0) [L4] COND FALSE 2 !(!cond) [L692] RET 2 assume_abort_if_not(*m==0) [L693] 2 *m = 1 [L719] RET 2 __VERIFIER_atomic_acquire(&mutexb) [L728] CALL 1 __VERIFIER_atomic_acquire(&mutexa) [L692] EXPR 1 \read(*m) [L692] EXPR 1 *m==0 [L692] CALL 1 assume_abort_if_not(*m==0) [L4] COND FALSE 1 !(!cond) [L692] RET 1 assume_abort_if_not(*m==0) [L693] 1 *m = 1 [L728] RET 1 __VERIFIER_atomic_acquire(&mutexa) [L720] CALL 2 __VERIFIER_atomic_dec() [L706] 2 count-- [L720] RET 2 __VERIFIER_atomic_dec() [L751] FCALL, FORK 0 pthread_create(&t, 0, thr2, 0) VAL [count=-1, mutexa={3:0}, mutexb={4:0}, pthread_create(&t, 0, thr2, 0)=0, t={5:0}] [L729] 1 count >= -1 VAL [arg={0:0}, arg={0:0}, count=-1, mutexa={3:0}, mutexb={4:0}] [L721] CALL 2 __VERIFIER_atomic_inc() [L702] 2 count++ [L721] RET 2 __VERIFIER_atomic_inc() [L729] 1 count >= -1 VAL [arg={0:0}, arg={0:0}, count=0, mutexa={3:0}, mutexb={4:0}] Now there is a data race on ~count~0 between C: count++ [702] and C: count >= -1 [729] - UnprovableResult [Line: 692]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 697]: 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: 731]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 697]: 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. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 167 locations, 54 error locations. Started 1 CEGAR loops. OverallTime: 34.4s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 32.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 16, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 248 NumberOfCodeBlocks, 248 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 243 ConstructedInterpolants, 1 QuantifiedInterpolants, 1719 SizeOfPredicates, 29 NumberOfNonLiveVariables, 386 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 17/27 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 17:25:54,305 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forcibly destroying the process [2022-04-18 17:25:54,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2022-04-18 17:25:54,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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