/usr/bin/java -Xmx7000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --traceabstraction.prune.known.deadend.states.from.previous.iterations false -s ../../../trunk/examples/settings/gemcutter/NewStatesSleep.epf --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_ERROR_LOCATION --traceabstraction.abstraction.used.for.commutativity.in.por VARIABLES_GLOBAL -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-complex/workstealqueue_mutex-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.dynamic-abstractions-e2ee32c-m [2023-09-07 12:20:43,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-09-07 12:20:43,603 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep.epf [2023-09-07 12:20:43,606 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-09-07 12:20:43,606 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-09-07 12:20:43,606 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-09-07 12:20:43,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-07 12:20:43,631 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-07 12:20:43,631 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-07 12:20:43,632 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-07 12:20:43,632 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-07 12:20:43,633 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-07 12:20:43,633 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-09-07 12:20:43,633 INFO L153 SettingsManager]: * Use SBE=true [2023-09-07 12:20:43,633 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-07 12:20:43,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-07 12:20:43,634 INFO L153 SettingsManager]: * sizeof long=4 [2023-09-07 12:20:43,634 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-07 12:20:43,634 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-09-07 12:20:43,634 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-09-07 12:20:43,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-07 12:20:43,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-07 12:20:43,638 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-07 12:20:43,638 INFO L153 SettingsManager]: * sizeof long double=12 [2023-09-07 12:20:43,638 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-09-07 12:20:43,638 INFO L153 SettingsManager]: * Use constant arrays=true [2023-09-07 12:20:43,638 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-07 12:20:43,639 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-07 12:20:43,639 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-09-07 12:20:43,639 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-07 12:20:43,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-07 12:20:43,639 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-07 12:20:43,640 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-07 12:20:43,640 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-07 12:20:43,640 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-07 12:20:43,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-07 12:20:43,641 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-09-07 12:20:43,641 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-09-07 12:20:43,641 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-07 12:20:43,641 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2023-09-07 12:20:43,641 INFO L153 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Prune known deadend states from previous iterations -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_ERROR_LOCATION Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstraction used for commutativity in POR -> VARIABLES_GLOBAL [2023-09-07 12:20:43,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-07 12:20:43,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-07 12:20:43,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-07 12:20:43,851 INFO L270 PluginConnector]: Initializing CDTParser... [2023-09-07 12:20:43,852 INFO L274 PluginConnector]: CDTParser initialized [2023-09-07 12:20:43,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-complex/workstealqueue_mutex-2.i [2023-09-07 12:20:44,823 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-09-07 12:20:45,026 INFO L384 CDTParser]: Found 1 translation units. [2023-09-07 12:20:45,027 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/workstealqueue_mutex-2.i [2023-09-07 12:20:45,047 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3464261a/bc2bae25ff404bd8ab70bd9214aea050/FLAGc96041224 [2023-09-07 12:20:45,061 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3464261a/bc2bae25ff404bd8ab70bd9214aea050 [2023-09-07 12:20:45,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-07 12:20:45,068 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-09-07 12:20:45,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-07 12:20:45,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-07 12:20:45,074 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-07 12:20:45,074 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 12:20:45" (1/1) ... [2023-09-07 12:20:45,075 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69e04d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:20:45, skipping insertion in model container [2023-09-07 12:20:45,075 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 12:20:45" (1/1) ... [2023-09-07 12:20:45,136 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-09-07 12:20:45,542 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/workstealqueue_mutex-2.i[76469,76482] [2023-09-07 12:20:45,570 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/workstealqueue_mutex-2.i[79042,79055] [2023-09-07 12:20:45,577 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/workstealqueue_mutex-2.i[79451,79464] [2023-09-07 12:20:45,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-07 12:20:45,603 INFO L202 MainTranslator]: Completed pre-run [2023-09-07 12:20:45,622 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [127] [2023-09-07 12:20:45,635 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [524] [2023-09-07 12:20:45,635 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [525] [2023-09-07 12:20:45,657 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/workstealqueue_mutex-2.i[76469,76482] [2023-09-07 12:20:45,658 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1797] [2023-09-07 12:20:45,658 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1798] [2023-09-07 12:20:45,658 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1799] [2023-09-07 12:20:45,658 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1800] [2023-09-07 12:20:45,659 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1802] [2023-09-07 12:20:45,659 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1805] [2023-09-07 12:20:45,659 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1805] [2023-09-07 12:20:45,659 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1805] [2023-09-07 12:20:45,659 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1807] [2023-09-07 12:20:45,660 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1812] [2023-09-07 12:20:45,660 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1812] [2023-09-07 12:20:45,660 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1812] [2023-09-07 12:20:45,662 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1825] [2023-09-07 12:20:45,662 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1825] [2023-09-07 12:20:45,662 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1826] [2023-09-07 12:20:45,665 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1830] [2023-09-07 12:20:45,665 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1830] [2023-09-07 12:20:45,666 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1833] [2023-09-07 12:20:45,668 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1845] [2023-09-07 12:20:45,670 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1848] [2023-09-07 12:20:45,679 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1861] [2023-09-07 12:20:45,680 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1864] [2023-09-07 12:20:45,684 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1880] [2023-09-07 12:20:45,685 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1883] [2023-09-07 12:20:45,686 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1893] [2023-09-07 12:20:45,686 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1894] [2023-09-07 12:20:45,687 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1899] [2023-09-07 12:20:45,688 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/workstealqueue_mutex-2.i[79042,79055] [2023-09-07 12:20:45,689 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1902] [2023-09-07 12:20:45,689 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1904] [2023-09-07 12:20:45,692 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/workstealqueue_mutex-2.i[79451,79464] [2023-09-07 12:20:45,692 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1915] [2023-09-07 12:20:45,692 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1916] [2023-09-07 12:20:45,694 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1922] [2023-09-07 12:20:45,695 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1926] [2023-09-07 12:20:45,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-07 12:20:45,789 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-07 12:20:45,790 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-07 12:20:45,794 INFO L206 MainTranslator]: Completed translation [2023-09-07 12:20:45,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:20:45 WrapperNode [2023-09-07 12:20:45,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-07 12:20:45,796 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-07 12:20:45,796 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-07 12:20:45,796 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-07 12:20:45,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:20:45" (1/1) ... [2023-09-07 12:20:45,829 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:20:45" (1/1) ... [2023-09-07 12:20:45,894 INFO L138 Inliner]: procedures = 489, calls = 127, calls flagged for inlining = 45, calls inlined = 117, statements flattened = 1844 [2023-09-07 12:20:45,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-07 12:20:45,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-07 12:20:45,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-07 12:20:45,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-09-07 12:20:45,901 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:20:45" (1/1) ... [2023-09-07 12:20:45,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:20:45" (1/1) ... [2023-09-07 12:20:45,912 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:20:45" (1/1) ... [2023-09-07 12:20:45,912 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:20:45" (1/1) ... [2023-09-07 12:20:45,944 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:20:45" (1/1) ... [2023-09-07 12:20:45,970 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:20:45" (1/1) ... [2023-09-07 12:20:45,976 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:20:45" (1/1) ... [2023-09-07 12:20:45,981 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:20:45" (1/1) ... [2023-09-07 12:20:46,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-07 12:20:46,007 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-07 12:20:46,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-09-07 12:20:46,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-09-07 12:20:46,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:20:45" (1/1) ... [2023-09-07 12:20:46,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-07 12:20:46,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-07 12:20:46,045 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) [2023-09-07 12:20:46,063 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 [2023-09-07 12:20:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure Stealer [2023-09-07 12:20:46,072 INFO L138 BoogieDeclarations]: Found implementation of procedure Stealer [2023-09-07 12:20:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-07 12:20:46,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-07 12:20:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-07 12:20:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-07 12:20:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-07 12:20:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-07 12:20:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-07 12:20:46,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-07 12:20:46,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-07 12:20:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-07 12:20:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-07 12:20:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-07 12:20:46,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-07 12:20:46,076 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-07 12:20:46,312 INFO L236 CfgBuilder]: Building ICFG [2023-09-07 12:20:46,314 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-07 12:20:47,589 INFO L277 CfgBuilder]: Performing block encoding [2023-09-07 12:20:47,847 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-07 12:20:47,847 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-09-07 12:20:47,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 12:20:47 BoogieIcfgContainer [2023-09-07 12:20:47,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-07 12:20:47,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-07 12:20:47,853 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-09-07 12:20:47,855 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-09-07 12:20:47,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 12:20:45" (1/3) ... [2023-09-07 12:20:47,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4076910c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 12:20:47, skipping insertion in model container [2023-09-07 12:20:47,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:20:45" (2/3) ... [2023-09-07 12:20:47,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4076910c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 12:20:47, skipping insertion in model container [2023-09-07 12:20:47,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 12:20:47" (3/3) ... [2023-09-07 12:20:47,857 INFO L112 eAbstractionObserver]: Analyzing ICFG workstealqueue_mutex-2.i [2023-09-07 12:20:47,863 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-07 12:20:47,870 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-07 12:20:47,870 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-09-07 12:20:47,870 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-07 12:20:47,963 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-07 12:20:48,004 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-09-07 12:20:48,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-09-07 12:20:48,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-07 12:20:48,007 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) [2023-09-07 12:20:48,028 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 [2023-09-07 12:20:48,055 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-09-07 12:20:48,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION ======== [2023-09-07 12:20:48,066 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;@404a396f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-09-07 12:20:48,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-07 12:21:02,024 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION] === [2023-09-07 12:21:02,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-07 12:21:02,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1890635427, now seen corresponding path program 1 times [2023-09-07 12:21:02,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-07 12:21:02,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667229643] [2023-09-07 12:21:02,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-07 12:21:02,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-07 12:21:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-07 12:21:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 10913 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10913 trivial. 0 not checked. [2023-09-07 12:21:10,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-07 12:21:10,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667229643] [2023-09-07 12:21:10,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667229643] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-07 12:21:10,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-07 12:21:10,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-07 12:21:10,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633340305] [2023-09-07 12:21:10,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-07 12:21:10,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-07 12:21:10,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-07 12:21:10,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-07 12:21:10,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-07 12:21:10,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-07 12:21:10,118 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-09-07 12:21:10,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 381.0) internal successors, (1143), 3 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-07 12:21:10,119 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-09-07 12:21:16,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-07 12:21:16,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-07 12:21:16,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION] === [2023-09-07 12:21:16,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-07 12:21:16,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1802785909, now seen corresponding path program 1 times [2023-09-07 12:21:16,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-07 12:21:16,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612888700] [2023-09-07 12:21:16,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-07 12:21:16,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-07 12:21:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-07 12:21:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 13428 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13427 trivial. 0 not checked. [2023-09-07 12:21:26,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-07 12:21:26,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612888700] [2023-09-07 12:21:26,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612888700] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-07 12:21:26,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161419188] [2023-09-07 12:21:26,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-07 12:21:26,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-07 12:21:26,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-07 12:21:26,059 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-07 12:21:26,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process