./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-complex/bounded_buffer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-complex/bounded_buffer.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:34:02,048 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:34:02,139 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:34:02,147 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:34:02,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:34:02,186 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:34:02,190 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:34:02,191 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:34:02,191 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:34:02,192 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:34:02,192 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:34:02,192 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:34:02,193 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:34:02,194 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:34:02,195 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:34:02,195 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:34:02,195 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:34:02,196 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:34:02,196 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:34:02,196 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:34:02,197 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:34:02,200 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:34:02,200 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:34:02,201 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:34:02,201 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:34:02,201 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:34:02,202 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:34:02,202 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:34:02,202 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:34:02,203 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:34:02,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:34:02,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:34:02,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:34:02,204 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:34:02,204 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:34:02,204 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:34:02,205 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:34:02,205 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:34:02,205 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:34:02,206 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:34:02,206 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:34:02,207 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:34:02,207 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 [2024-11-09 02:34:02,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:34:02,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:34:02,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:34:02,488 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:34:02,489 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:34:02,491 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-complex/bounded_buffer.i [2024-11-09 02:34:04,057 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:34:04,382 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:34:04,383 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/bounded_buffer.i [2024-11-09 02:34:04,406 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a50b498f7/e11c4c6aceb34768aa5440da57ff0fcc/FLAGefd11dbe7 [2024-11-09 02:34:04,423 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a50b498f7/e11c4c6aceb34768aa5440da57ff0fcc [2024-11-09 02:34:04,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:34:04,427 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:34:04,428 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:34:04,428 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:34:04,433 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:34:04,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:34:04" (1/1) ... [2024-11-09 02:34:04,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2f4745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:34:04, skipping insertion in model container [2024-11-09 02:34:04,435 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:34:04" (1/1) ... [2024-11-09 02:34:04,488 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:34:05,145 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2024-11-09 02:34:05,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:34:05,212 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:34:05,311 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2024-11-09 02:34:05,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:34:05,440 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:34:05,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:34:05 WrapperNode [2024-11-09 02:34:05,441 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:34:05,443 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:34:05,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:34:05,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:34:05,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:34:05" (1/1) ... [2024-11-09 02:34:05,485 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:34:05" (1/1) ... [2024-11-09 02:34:05,544 INFO L138 Inliner]: procedures = 429, calls = 134, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 473 [2024-11-09 02:34:05,545 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:34:05,546 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:34:05,546 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:34:05,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:34:05,557 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:34:05" (1/1) ... [2024-11-09 02:34:05,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:34:05" (1/1) ... [2024-11-09 02:34:05,572 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:34:05" (1/1) ... [2024-11-09 02:34:05,599 INFO L175 MemorySlicer]: Split 78 memory accesses to 6 slices as follows [2, 2, 5, 6, 58, 5]. 74 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 26 writes are split as follows [0, 1, 3, 2, 17, 3]. [2024-11-09 02:34:05,600 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:34:05" (1/1) ... [2024-11-09 02:34:05,600 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:34:05" (1/1) ... [2024-11-09 02:34:05,620 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:34:05" (1/1) ... [2024-11-09 02:34:05,626 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:34:05" (1/1) ... [2024-11-09 02:34:05,629 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:34:05" (1/1) ... [2024-11-09 02:34:05,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:34:05" (1/1) ... [2024-11-09 02:34:05,644 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:34:05,645 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:34:05,646 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:34:05,646 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:34:05,647 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:34:05" (1/1) ... [2024-11-09 02:34:05,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:34:05,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:34:05,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 02:34:05,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 02:34:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2024-11-09 02:34:05,747 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2024-11-09 02:34:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 02:34:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:34:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:34:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 02:34:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 02:34:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 02:34:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-09 02:34:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 02:34:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:34:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:34:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 02:34:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 02:34:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-09 02:34:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-09 02:34:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-09 02:34:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-09 02:34:05,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:34:05,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:34:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 02:34:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 02:34:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 02:34:05,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-09 02:34:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-09 02:34:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-09 02:34:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-09 02:34:05,752 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2024-11-09 02:34:05,753 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2024-11-09 02:34:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 02:34:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:34:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:34:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 02:34:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 02:34:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 02:34:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-09 02:34:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:34:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:34:05,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 02:34:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 02:34:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 02:34:05,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-09 02:34:05,756 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:34:05,991 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:34:05,993 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:34:06,618 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:34:06,618 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:34:07,223 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:34:07,223 INFO L316 CfgBuilder]: Removed 13 assume(true) statements. [2024-11-09 02:34:07,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:34:07 BoogieIcfgContainer [2024-11-09 02:34:07,224 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:34:07,226 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:34:07,226 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:34:07,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:34:07,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:34:04" (1/3) ... [2024-11-09 02:34:07,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4ad40a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:34:07, skipping insertion in model container [2024-11-09 02:34:07,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:34:05" (2/3) ... [2024-11-09 02:34:07,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4ad40a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:34:07, skipping insertion in model container [2024-11-09 02:34:07,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:34:07" (3/3) ... [2024-11-09 02:34:07,233 INFO L112 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2024-11-09 02:34:07,252 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:34:07,252 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-09 02:34:07,252 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:34:07,359 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-09 02:34:07,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 114 transitions, 248 flow [2024-11-09 02:34:07,508 INFO L124 PetriNetUnfolderBase]: 76/264 cut-off events. [2024-11-09 02:34:07,509 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-09 02:34:07,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 264 events. 76/264 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1180 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 146. Up to 16 conditions per place. [2024-11-09 02:34:07,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 114 transitions, 248 flow [2024-11-09 02:34:07,525 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 114 transitions, 248 flow [2024-11-09 02:34:07,533 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:34:07,540 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@70a380a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:34:07,541 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-09 02:34:07,554 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:34:07,554 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2024-11-09 02:34:07,554 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:34:07,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:34:07,555 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 02:34:07,556 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [consumer_routineErr1ASSERT_VIOLATIONUNSUPPORTED_FEATURE, consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-09 02:34:07,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:34:07,562 INFO L85 PathProgramCache]: Analyzing trace with hash 516346199, now seen corresponding path program 1 times [2024-11-09 02:34:07,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:34:07,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470452648] [2024-11-09 02:34:07,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:34:07,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:34:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:34:07,824 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:34:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:34:07,941 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:34:07,943 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:34:07,944 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-09 02:34:07,948 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr1ASSERT_VIOLATIONUNSUPPORTED_FEATURE (6 of 8 remaining) [2024-11-09 02:34:07,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2024-11-09 02:34:07,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2024-11-09 02:34:07,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (3 of 8 remaining) [2024-11-09 02:34:07,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr1ASSERT_VIOLATIONUNSUPPORTED_FEATURE (2 of 8 remaining) [2024-11-09 02:34:07,949 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2024-11-09 02:34:07,950 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (0 of 8 remaining) [2024-11-09 02:34:07,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:34:07,951 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 02:34:07,956 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:34:07,956 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 02:34:08,084 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-11-09 02:34:08,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 186 transitions, 416 flow [2024-11-09 02:34:08,296 INFO L124 PetriNetUnfolderBase]: 293/919 cut-off events. [2024-11-09 02:34:08,297 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-09 02:34:08,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 919 events. 293/919 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5540 event pairs, 1 based on Foata normal form. 0/625 useless extension candidates. Maximal degree in co-relation 533. Up to 64 conditions per place. [2024-11-09 02:34:08,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 186 transitions, 416 flow [2024-11-09 02:34:08,329 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 186 transitions, 416 flow [2024-11-09 02:34:08,334 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:34:08,335 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@70a380a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:34:08,335 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-09 02:34:08,350 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:34:08,351 INFO L124 PetriNetUnfolderBase]: 4/49 cut-off events. [2024-11-09 02:34:08,351 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 02:34:08,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:34:08,351 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:34:08,351 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [consumer_routineErr1ASSERT_VIOLATIONUNSUPPORTED_FEATURE, consumer_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-09 02:34:08,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:34:08,352 INFO L85 PathProgramCache]: Analyzing trace with hash -158174170, now seen corresponding path program 1 times [2024-11-09 02:34:08,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:34:08,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403262023] [2024-11-09 02:34:08,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:34:08,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:34:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:34:09,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:34:09,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:34:09,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403262023] [2024-11-09 02:34:09,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403262023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:34:09,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:34:09,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 02:34:09,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167628155] [2024-11-09 02:34:09,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:34:09,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:34:09,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:34:09,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:34:09,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:34:09,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 186 [2024-11-09 02:34:09,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 186 transitions, 416 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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) [2024-11-09 02:34:09,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:34:09,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 186 [2024-11-09 02:34:09,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand