/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-divine_ring_2w1r-1_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 22:23:16,898 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 22:23:16,977 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 22:23:16,983 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 22:23:16,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 22:23:16,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 22:23:16,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 22:23:17,021 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 22:23:17,022 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 22:23:17,025 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 22:23:17,026 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 22:23:17,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 22:23:17,028 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 22:23:17,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 22:23:17,029 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 22:23:17,030 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 22:23:17,030 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 22:23:17,030 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 22:23:17,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 22:23:17,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 22:23:17,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 22:23:17,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 22:23:17,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 22:23:17,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 22:23:17,033 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 22:23:17,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 22:23:17,033 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 22:23:17,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 22:23:17,034 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 22:23:17,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 22:23:17,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:23:17,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 22:23:17,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 22:23:17,035 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 22:23:17,035 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 22:23:17,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 22:23:17,036 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 22:23:17,036 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 22:23:17,036 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 22:23:17,036 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 22:23:17,036 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 22:23:17,036 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 22:23:17,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 22:23:17,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 22:23:17,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 22:23:17,314 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 22:23:17,314 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 22:23:17,315 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-divine_ring_2w1r-1_bound2.i [2023-08-03 22:23:18,735 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 22:23:18,978 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 22:23:18,979 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-divine_ring_2w1r-1_bound2.i [2023-08-03 22:23:19,000 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0105684bf/4818712dc0414a08ba53beb989eedbe4/FLAG4151f1502 [2023-08-03 22:23:19,012 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0105684bf/4818712dc0414a08ba53beb989eedbe4 [2023-08-03 22:23:19,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 22:23:19,015 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 22:23:19,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 22:23:19,017 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 22:23:19,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 22:23:19,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:23:19" (1/1) ... [2023-08-03 22:23:19,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e4107b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:23:19, skipping insertion in model container [2023-08-03 22:23:19,021 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:23:19" (1/1) ... [2023-08-03 22:23:19,062 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 22:23:19,187 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-03 22:23:19,418 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-divine_ring_2w1r-1_bound2.i[39095,39108] [2023-08-03 22:23:19,421 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-divine_ring_2w1r-1_bound2.i[39180,39193] [2023-08-03 22:23:19,421 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-divine_ring_2w1r-1_bound2.i[39232,39245] [2023-08-03 22:23:19,508 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-divine_ring_2w1r-1_bound2.i[49388,49401] [2023-08-03 22:23:19,509 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-divine_ring_2w1r-1_bound2.i[49437,49450] [2023-08-03 22:23:19,512 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-divine_ring_2w1r-1_bound2.i[49565,49578] [2023-08-03 22:23:19,512 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-divine_ring_2w1r-1_bound2.i[49623,49636] [2023-08-03 22:23:19,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:23:19,534 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 22:23:19,552 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-03 22:23:19,570 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [250] [2023-08-03 22:23:19,572 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [250] [2023-08-03 22:23:19,581 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile long [805] [2023-08-03 22:23:19,582 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [806] [2023-08-03 22:23:19,582 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile long [807] [2023-08-03 22:23:19,582 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [809] [2023-08-03 22:23:19,584 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [814] [2023-08-03 22:23:19,584 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [815] [2023-08-03 22:23:19,590 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [827] [2023-08-03 22:23:19,594 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-divine_ring_2w1r-1_bound2.i[39095,39108] [2023-08-03 22:23:19,595 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-divine_ring_2w1r-1_bound2.i[39180,39193] [2023-08-03 22:23:19,596 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-divine_ring_2w1r-1_bound2.i[39232,39245] [2023-08-03 22:23:19,598 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [843] [2023-08-03 22:23:19,601 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [899] [2023-08-03 22:23:19,609 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1054] [2023-08-03 22:23:19,617 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-divine_ring_2w1r-1_bound2.i[49388,49401] [2023-08-03 22:23:19,618 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-divine_ring_2w1r-1_bound2.i[49437,49450] [2023-08-03 22:23:19,619 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-divine_ring_2w1r-1_bound2.i[49565,49578] [2023-08-03 22:23:19,620 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-divine_ring_2w1r-1_bound2.i[49623,49636] [2023-08-03 22:23:19,633 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1078] [2023-08-03 22:23:19,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:23:19,687 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 22:23:19,693 INFO L206 MainTranslator]: Completed translation [2023-08-03 22:23:19,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:23:19 WrapperNode [2023-08-03 22:23:19,693 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 22:23:19,695 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 22:23:19,695 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 22:23:19,695 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 22:23:19,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:23:19" (1/1) ... [2023-08-03 22:23:19,732 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:23:19" (1/1) ... [2023-08-03 22:23:19,768 INFO L138 Inliner]: procedures = 310, calls = 70, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 235 [2023-08-03 22:23:19,769 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 22:23:19,769 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 22:23:19,769 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 22:23:19,769 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 22:23:19,777 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:23:19" (1/1) ... [2023-08-03 22:23:19,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:23:19" (1/1) ... [2023-08-03 22:23:19,798 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:23:19" (1/1) ... [2023-08-03 22:23:19,798 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:23:19" (1/1) ... [2023-08-03 22:23:19,809 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:23:19" (1/1) ... [2023-08-03 22:23:19,823 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:23:19" (1/1) ... [2023-08-03 22:23:19,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:23:19" (1/1) ... [2023-08-03 22:23:19,836 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:23:19" (1/1) ... [2023-08-03 22:23:19,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 22:23:19,840 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 22:23:19,840 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 22:23:19,840 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 22:23:19,841 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:23:19" (1/1) ... [2023-08-03 22:23:19,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:23:19,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:23:19,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 22:23:19,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 22:23:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2023-08-03 22:23:19,914 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2023-08-03 22:23:19,914 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2023-08-03 22:23:19,915 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2023-08-03 22:23:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 22:23:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 22:23:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 22:23:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 22:23:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 22:23:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 22:23:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 22:23:19,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 22:23:19,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 22:23:19,917 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 22:23:20,030 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 22:23:20,032 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 22:23:20,336 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 22:23:20,344 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 22:23:20,344 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-03 22:23:20,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:23:20 BoogieIcfgContainer [2023-08-03 22:23:20,346 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 22:23:20,348 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 22:23:20,348 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 22:23:20,351 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 22:23:20,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 10:23:19" (1/3) ... [2023-08-03 22:23:20,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590f957d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:23:20, skipping insertion in model container [2023-08-03 22:23:20,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:23:19" (2/3) ... [2023-08-03 22:23:20,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590f957d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:23:20, skipping insertion in model container [2023-08-03 22:23:20,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:23:20" (3/3) ... [2023-08-03 22:23:20,353 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-divine_ring_2w1r-1_bound2.i [2023-08-03 22:23:20,359 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 22:23:20,367 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 22:23:20,368 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-03 22:23:20,368 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 22:23:20,471 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 22:23:20,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 247 transitions, 516 flow [2023-08-03 22:23:20,644 INFO L124 PetriNetUnfolderBase]: 55/500 cut-off events. [2023-08-03 22:23:20,644 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 22:23:20,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 500 events. 55/500 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2276 event pairs, 0 based on Foata normal form. 0/435 useless extension candidates. Maximal degree in co-relation 278. Up to 8 conditions per place. [2023-08-03 22:23:20,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 247 transitions, 516 flow [2023-08-03 22:23:20,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 227 places, 247 transitions, 516 flow [2023-08-03 22:23:20,668 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:23:20,685 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 227 places, 247 transitions, 516 flow [2023-08-03 22:23:20,687 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 227 places, 247 transitions, 516 flow [2023-08-03 22:23:20,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 247 transitions, 516 flow [2023-08-03 22:23:20,768 INFO L124 PetriNetUnfolderBase]: 55/500 cut-off events. [2023-08-03 22:23:20,769 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 22:23:20,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 500 events. 55/500 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2276 event pairs, 0 based on Foata normal form. 0/435 useless extension candidates. Maximal degree in co-relation 278. Up to 8 conditions per place. [2023-08-03 22:23:20,797 INFO L119 LiptonReduction]: Number of co-enabled transitions 26898 [2023-08-03 22:23:25,901 INFO L134 LiptonReduction]: Checked pairs total: 53477 [2023-08-03 22:23:25,902 INFO L136 LiptonReduction]: Total number of compositions: 208 [2023-08-03 22:23:25,934 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:23:25,939 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1a8291f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:23:25,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 22:23:25,945 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:23:25,946 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2023-08-03 22:23:25,946 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:23:25,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:23:25,947 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 22:23:25,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:23:25,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:23:25,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1491615609, now seen corresponding path program 1 times [2023-08-03 22:23:25,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:23:25,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460304875] [2023-08-03 22:23:25,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:23:25,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:23:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:23:26,107 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 22:23:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:23:26,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 22:23:26,185 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 22:23:26,186 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 22:23:26,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 22:23:26,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 22:23:26,188 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 22:23:26,193 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-03 22:23:26,195 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 22:23:26,195 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 22:23:26,267 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 22:23:26,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 373 transitions, 794 flow [2023-08-03 22:23:26,512 INFO L124 PetriNetUnfolderBase]: 179/1338 cut-off events. [2023-08-03 22:23:26,512 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 22:23:26,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 1338 events. 179/1338 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 8608 event pairs, 1 based on Foata normal form. 0/1164 useless extension candidates. Maximal degree in co-relation 864. Up to 32 conditions per place. [2023-08-03 22:23:26,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 373 transitions, 794 flow [2023-08-03 22:23:26,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 373 transitions, 794 flow [2023-08-03 22:23:26,554 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:23:26,554 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 340 places, 373 transitions, 794 flow [2023-08-03 22:23:26,554 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 340 places, 373 transitions, 794 flow [2023-08-03 22:23:26,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 373 transitions, 794 flow [2023-08-03 22:23:26,781 INFO L124 PetriNetUnfolderBase]: 179/1338 cut-off events. [2023-08-03 22:23:26,781 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 22:23:26,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 1338 events. 179/1338 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 8608 event pairs, 1 based on Foata normal form. 0/1164 useless extension candidates. Maximal degree in co-relation 864. Up to 32 conditions per place. [2023-08-03 22:23:26,881 INFO L119 LiptonReduction]: Number of co-enabled transitions 85104 [2023-08-03 22:23:32,714 INFO L134 LiptonReduction]: Checked pairs total: 170408 [2023-08-03 22:23:32,715 INFO L136 LiptonReduction]: Total number of compositions: 313 [2023-08-03 22:23:32,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:23:32,718 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1a8291f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:23:32,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 22:23:32,727 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:23:32,727 INFO L124 PetriNetUnfolderBase]: 14/117 cut-off events. [2023-08-03 22:23:32,728 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-03 22:23:32,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:23:32,728 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 22:23:32,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:23:32,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:23:32,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1472094844, now seen corresponding path program 1 times [2023-08-03 22:23:32,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:23:32,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393106414] [2023-08-03 22:23:32,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:23:32,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:23:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:23:32,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:23:32,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:23:32,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393106414] [2023-08-03 22:23:32,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393106414] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:23:32,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162382994] [2023-08-03 22:23:32,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:23:32,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:23:32,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:23:32,937 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 22:23:32,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 22:23:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:23:33,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 22:23:33,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:23:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:23:33,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 22:23:33,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162382994] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:23:33,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 22:23:33,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 22:23:33,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585444406] [2023-08-03 22:23:33,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:23:33,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:23:33,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:23:33,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:23:33,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:23:33,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 686 [2023-08-03 22:23:33,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 124 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 335.6) internal successors, (1678), 5 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:23:33,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:23:33,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 686 [2023-08-03 22:23:33,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand