/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_ERROR_LOCATION -s ../../../trunk/examples/settings/gemcutter/SleepMap-ConcreteSmt-VarAbsGlobalSmt.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.dpor-d6e1636 [2023-01-10 19:10:56,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-10 19:10:56,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-10 19:10:56,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-10 19:10:56,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-10 19:10:56,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-10 19:10:56,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-10 19:10:56,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-10 19:10:56,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-10 19:10:56,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-10 19:10:56,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-10 19:10:56,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-10 19:10:56,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-10 19:10:56,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-10 19:10:56,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-10 19:10:56,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-10 19:10:56,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-10 19:10:56,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-10 19:10:56,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-10 19:10:56,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-10 19:10:56,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-10 19:10:56,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-10 19:10:56,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-10 19:10:56,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-10 19:10:56,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-10 19:10:56,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-10 19:10:56,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-10 19:10:56,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-10 19:10:56,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-10 19:10:56,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-10 19:10:56,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-10 19:10:56,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-10 19:10:56,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-10 19:10:56,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-10 19:10:56,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-10 19:10:56,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-10 19:10:56,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-10 19:10:56,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-10 19:10:56,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-10 19:10:56,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-10 19:10:56,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-10 19:10:56,578 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/SleepMap-ConcreteSmt-VarAbsGlobalSmt.epf [2023-01-10 19:10:56,599 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-10 19:10:56,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-10 19:10:56,600 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-01-10 19:10:56,600 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-01-10 19:10:56,601 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-10 19:10:56,601 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-10 19:10:56,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-10 19:10:56,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-10 19:10:56,601 INFO L138 SettingsManager]: * Use SBE=true [2023-01-10 19:10:56,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-10 19:10:56,602 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-10 19:10:56,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-10 19:10:56,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-10 19:10:56,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-10 19:10:56,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-10 19:10:56,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-10 19:10:56,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-10 19:10:56,603 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-10 19:10:56,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-10 19:10:56,603 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-10 19:10:56,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-10 19:10:56,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-10 19:10:56,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-10 19:10:56,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-10 19:10:56,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-10 19:10:56,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-10 19:10:56,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-10 19:10:56,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-10 19:10:56,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-10 19:10:56,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-10 19:10:56,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-10 19:10:56,604 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-01-10 19:10:56,604 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-01-10 19:10:56,605 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-01-10 19:10:56,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-01-10 19:10:56,605 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2023-01-10 19:10:56,605 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2023-01-10 19:10:56,605 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-10 19:10:56,605 INFO L138 SettingsManager]: * Number of independence relations to use for POR=2 WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_ERROR_LOCATION Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-01-10 19:10:56,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-10 19:10:56,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-10 19:10:56,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-10 19:10:56,825 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-10 19:10:56,825 INFO L275 PluginConnector]: CDTParser initialized [2023-01-10 19:10:56,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2023-01-10 19:10:57,844 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-10 19:10:57,992 INFO L351 CDTParser]: Found 1 translation units. [2023-01-10 19:10:57,992 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2023-01-10 19:10:57,996 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaa9a9966/8d81c66fa6ec4c12b6b09d72143f772e/FLAG24124c122 [2023-01-10 19:10:58,006 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaa9a9966/8d81c66fa6ec4c12b6b09d72143f772e [2023-01-10 19:10:58,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-10 19:10:58,008 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-10 19:10:58,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-10 19:10:58,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-10 19:10:58,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-10 19:10:58,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:10:58" (1/1) ... [2023-01-10 19:10:58,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67cb872d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:58, skipping insertion in model container [2023-01-10 19:10:58,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:10:58" (1/1) ... [2023-01-10 19:10:58,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-10 19:10:58,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-10 19:10:58,132 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c[2147,2160] [2023-01-10 19:10:58,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-10 19:10:58,140 INFO L203 MainTranslator]: Completed pre-run [2023-01-10 19:10:58,151 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c[2147,2160] [2023-01-10 19:10:58,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-10 19:10:58,160 WARN L663 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-10 19:10:58,160 WARN L663 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-10 19:10:58,165 INFO L208 MainTranslator]: Completed translation [2023-01-10 19:10:58,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:58 WrapperNode [2023-01-10 19:10:58,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-10 19:10:58,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-10 19:10:58,166 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-10 19:10:58,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-10 19:10:58,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:58" (1/1) ... [2023-01-10 19:10:58,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:58" (1/1) ... [2023-01-10 19:10:58,193 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2023-01-10 19:10:58,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-10 19:10:58,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-10 19:10:58,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-10 19:10:58,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-10 19:10:58,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:58" (1/1) ... [2023-01-10 19:10:58,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:58" (1/1) ... [2023-01-10 19:10:58,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:58" (1/1) ... [2023-01-10 19:10:58,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:58" (1/1) ... [2023-01-10 19:10:58,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:58" (1/1) ... [2023-01-10 19:10:58,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:58" (1/1) ... [2023-01-10 19:10:58,207 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:58" (1/1) ... [2023-01-10 19:10:58,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:58" (1/1) ... [2023-01-10 19:10:58,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-10 19:10:58,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-10 19:10:58,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-10 19:10:58,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-10 19:10:58,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:58" (1/1) ... [2023-01-10 19:10:58,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-10 19:10:58,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-10 19:10:58,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-10 19:10:58,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-10 19:10:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-10 19:10:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-10 19:10:58,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-10 19:10:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-10 19:10:58,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-10 19:10:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-10 19:10:58,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-10 19:10:58,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-10 19:10:58,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-10 19:10:58,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-10 19:10:58,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-10 19:10:58,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-10 19:10:58,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-10 19:10:58,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-10 19:10:58,264 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-10 19:10:58,386 INFO L236 CfgBuilder]: Building ICFG [2023-01-10 19:10:58,388 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-10 19:10:58,632 INFO L277 CfgBuilder]: Performing block encoding [2023-01-10 19:10:58,660 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-10 19:10:58,661 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-10 19:10:58,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:10:58 BoogieIcfgContainer [2023-01-10 19:10:58,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-10 19:10:58,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-10 19:10:58,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-10 19:10:58,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-10 19:10:58,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:10:58" (1/3) ... [2023-01-10 19:10:58,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c40ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:10:58, skipping insertion in model container [2023-01-10 19:10:58,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:10:58" (2/3) ... [2023-01-10 19:10:58,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c40ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:10:58, skipping insertion in model container [2023-01-10 19:10:58,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:10:58" (3/3) ... [2023-01-10 19:10:58,667 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2023-01-10 19:10:58,678 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-01-10 19:10:58,684 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-10 19:10:58,684 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-01-10 19:10:58,684 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-10 19:10:58,744 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-10 19:10:58,785 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-01-10 19:10:58,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-01-10 19:10:58,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-10 19:10:58,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-01-10 19:10:58,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-01-10 19:10:58,811 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-01-10 19:10:58,816 INFO L164 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2023-01-10 19:10:58,816 WARN L167 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2023-01-10 19:10:58,816 WARN L168 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2023-01-10 19:10:58,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE ======== [2023-01-10 19:10:58,826 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e5a41c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-01-10 19:10:58,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-01-10 19:10:58,889 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.PartialOrderReductionFacade$SleepBlockedStatistics.computeSleepBlocked(PartialOrderReductionFacade.java:493) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.PartialOrderReductionFacade$SleepBlockedStatistics.(PartialOrderReductionFacade.java:485) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.PartialOrderReductionFacade.apply(PartialOrderReductionFacade.java:335) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.PartialOrderCegarLoop.isAbstractionEmpty(PartialOrderCegarLoop.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.computeInitialAbstraction(AbstractCegarLoop.java:404) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:365) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-01-10 19:10:58,892 INFO L158 Benchmark]: Toolchain (without parser) took 882.98ms. Allocated memory is still 269.5MB. Free memory was 220.6MB in the beginning and 174.0MB in the end (delta: 46.7MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. [2023-01-10 19:10:58,892 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 177.2MB. Free memory was 128.9MB in the beginning and 128.7MB in the end (delta: 164.5kB). There was no memory consumed. Max. memory is 8.0GB. [2023-01-10 19:10:58,892 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.28ms. Allocated memory is still 269.5MB. Free memory was 220.6MB in the beginning and 209.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-01-10 19:10:58,893 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.85ms. Allocated memory is still 269.5MB. Free memory was 209.6MB in the beginning and 208.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-01-10 19:10:58,893 INFO L158 Benchmark]: Boogie Preprocessor took 15.16ms. Allocated memory is still 269.5MB. Free memory was 208.0MB in the beginning and 207.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-01-10 19:10:58,894 INFO L158 Benchmark]: RCFGBuilder took 452.63ms. Allocated memory is still 269.5MB. Free memory was 207.0MB in the beginning and 191.3MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-01-10 19:10:58,894 INFO L158 Benchmark]: TraceAbstraction took 227.08ms. Allocated memory is still 269.5MB. Free memory was 190.2MB in the beginning and 174.0MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-01-10 19:10:58,896 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 177.2MB. Free memory was 128.9MB in the beginning and 128.7MB in the end (delta: 164.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 156.28ms. Allocated memory is still 269.5MB. Free memory was 220.6MB in the beginning and 209.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.85ms. Allocated memory is still 269.5MB. Free memory was 209.6MB in the beginning and 208.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.16ms. Allocated memory is still 269.5MB. Free memory was 208.0MB in the beginning and 207.0MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 452.63ms. Allocated memory is still 269.5MB. Free memory was 207.0MB in the beginning and 191.3MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 227.08ms. Allocated memory is still 269.5MB. Free memory was 190.2MB in the beginning and 174.0MB in the end (delta: 16.3MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.PartialOrderReductionFacade$SleepBlockedStatistics.computeSleepBlocked(PartialOrderReductionFacade.java:493) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-01-10 19:10:58,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2023-01-10 19:10:59,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...