/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline_IcfgBuilder.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/pthread-complex/bounded_buffer.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 21:51:06,677 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 21:51:06,729 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 21:51:06,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 21:51:06,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 21:51:06,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 21:51:06,757 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 21:51:06,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 21:51:06,757 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 21:51:06,758 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 21:51:06,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 21:51:06,758 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 21:51:06,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 21:51:06,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 21:51:06,759 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 21:51:06,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 21:51:06,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 21:51:06,759 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 21:51:06,759 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 21:51:06,759 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 21:51:06,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 21:51:06,759 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 21:51:06,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 21:51:06,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 21:51:06,759 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 21:51:06,759 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 21:51:06,759 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 21:51:06,759 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 21:51:06,759 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 21:51:06,759 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:51:06,759 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:51:06,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:51:06,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:51:06,760 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 21:51:06,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:51:06,760 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:51:06,760 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:51:06,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:51:06,760 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 21:51:06,760 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 21:51:06,760 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 21:51:06,760 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 21:51:06,760 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 21:51:06,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 21:51:06,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 21:51:06,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 21:51:06,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 21:51:06,760 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> FINITE_AUTOMATA Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-13 21:51:06,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 21:51:06,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 21:51:06,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 21:51:06,995 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 21:51:06,995 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 21:51:06,995 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-complex/bounded_buffer.i [2025-04-13 21:51:08,321 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/227abbaac/ac8dfdbb43ca4c2ab557b7a7665709ee/FLAG7243da5e8 [2025-04-13 21:51:08,597 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 21:51:08,597 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/bounded_buffer.i [2025-04-13 21:51:08,618 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/227abbaac/ac8dfdbb43ca4c2ab557b7a7665709ee/FLAG7243da5e8 [2025-04-13 21:51:09,372 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/227abbaac/ac8dfdbb43ca4c2ab557b7a7665709ee [2025-04-13 21:51:09,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 21:51:09,376 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 21:51:09,377 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 21:51:09,377 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 21:51:09,379 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 21:51:09,380 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:51:09" (1/1) ... [2025-04-13 21:51:09,381 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b4a55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:51:09, skipping insertion in model container [2025-04-13 21:51:09,381 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:51:09" (1/1) ... [2025-04-13 21:51:09,415 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 21:51:09,899 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/bounded_buffer.i[70002,70015] [2025-04-13 21:51:09,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:51:09,940 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 21:51:10,030 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/bounded_buffer.i[70002,70015] [2025-04-13 21:51:10,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:51:10,107 INFO L204 MainTranslator]: Completed translation [2025-04-13 21:51:10,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:51:10 WrapperNode [2025-04-13 21:51:10,109 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 21:51:10,109 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 21:51:10,110 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 21:51:10,110 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 21:51:10,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:51:10" (1/1) ... [2025-04-13 21:51:10,133 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:51:10" (1/1) ... [2025-04-13 21:51:10,168 INFO L138 Inliner]: procedures = 429, calls = 134, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 450 [2025-04-13 21:51:10,168 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 21:51:10,169 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 21:51:10,169 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 21:51:10,169 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 21:51:10,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:51:10" (1/1) ... [2025-04-13 21:51:10,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:51:10" (1/1) ... [2025-04-13 21:51:10,184 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:51:10" (1/1) ... [2025-04-13 21:51:10,210 INFO L175 MemorySlicer]: Split 78 memory accesses to 6 slices as follows [2, 2, 5, 5, 58, 6]. 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, 3, 17, 2]. [2025-04-13 21:51:10,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:51:10" (1/1) ... [2025-04-13 21:51:10,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:51:10" (1/1) ... [2025-04-13 21:51:10,225 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:51:10" (1/1) ... [2025-04-13 21:51:10,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:51:10" (1/1) ... [2025-04-13 21:51:10,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:51:10" (1/1) ... [2025-04-13 21:51:10,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:51:10" (1/1) ... [2025-04-13 21:51:10,241 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 21:51:10,242 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 21:51:10,242 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 21:51:10,242 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 21:51:10,243 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:51:10" (1/1) ... [2025-04-13 21:51:10,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:51:10,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:51:10,276 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) [2025-04-13 21:51:10,278 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 [2025-04-13 21:51:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2025-04-13 21:51:10,299 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2025-04-13 21:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-13 21:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 21:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 21:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-13 21:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-04-13 21:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-04-13 21:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-04-13 21:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 21:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 21:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 21:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-04-13 21:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-04-13 21:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-04-13 21:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-04-13 21:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-04-13 21:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-04-13 21:51:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 21:51:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 21:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-13 21:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-04-13 21:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-04-13 21:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-04-13 21:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-04-13 21:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-04-13 21:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-04-13 21:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2025-04-13 21:51:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2025-04-13 21:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 21:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 21:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 21:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-13 21:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-04-13 21:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-04-13 21:51:10,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-04-13 21:51:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 21:51:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 21:51:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 21:51:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-04-13 21:51:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-04-13 21:51:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-04-13 21:51:10,305 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 21:51:10,479 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 21:51:10,480 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 21:51:10,771 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1646: havoc ~#temp~1#1.base, ~#temp~1#1.offset; [2025-04-13 21:51:10,771 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1646-1: SUMMARY for call ULTIMATE.dealloc(~#temp~1#1.base, ~#temp~1#1.offset); srcloc: null [2025-04-13 21:51:10,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1663: havoc main_~#producers~0#1.base, main_~#producers~0#1.offset; [2025-04-13 21:51:10,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1663-1: SUMMARY for call ULTIMATE.dealloc(main_~#producers~0#1.base, main_~#producers~0#1.offset); srcloc: null [2025-04-13 21:51:10,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1664: havoc main_~#consumers~0#1.base, main_~#consumers~0#1.offset; [2025-04-13 21:51:10,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1664-1: SUMMARY for call ULTIMATE.dealloc(main_~#consumers~0#1.base, main_~#consumers~0#1.offset); srcloc: null [2025-04-13 21:51:10,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1666: havoc main_~#buffer~0#1.base, main_~#buffer~0#1.offset; [2025-04-13 21:51:10,962 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L1666-1: SUMMARY for call ULTIMATE.dealloc(main_~#buffer~0#1.base, main_~#buffer~0#1.offset); srcloc: null [2025-04-13 21:51:10,963 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 21:51:10,964 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 21:51:10,964 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 21:51:11,437 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:51:11,447 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:51:11,456 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:51:11,487 WARN L179 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:51:11,500 WARN L179 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:51:11,516 WARN L179 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:51:11,523 WARN L179 LargeBlockEncoding]: Complex 4:4 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:51:11,531 WARN L179 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:51:11,541 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 21:51:11,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:51:11 BoogieIcfgContainer [2025-04-13 21:51:11,541 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 21:51:11,543 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 21:51:11,543 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 21:51:11,546 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 21:51:11,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 09:51:09" (1/3) ... [2025-04-13 21:51:11,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0e03b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:51:11, skipping insertion in model container [2025-04-13 21:51:11,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:51:10" (2/3) ... [2025-04-13 21:51:11,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0e03b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:51:11, skipping insertion in model container [2025-04-13 21:51:11,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:51:11" (3/3) ... [2025-04-13 21:51:11,549 INFO L128 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2025-04-13 21:51:11,562 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 21:51:11,563 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bounded_buffer.i that has 3 procedures, 44 locations, 80 edges, 1 initial locations, 13 loop locations, and 3 error locations. [2025-04-13 21:51:11,563 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 21:51:11,671 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-13 21:51:11,696 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 50 places, 84 transitions, 188 flow [2025-04-13 21:51:11,847 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2673 states, 2644 states have (on average 4.256051437216339) internal successors, (11253), 2672 states have internal predecessors, (11253), 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) [2025-04-13 21:51:11,863 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 21:51:11,871 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@2a674eab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 21:51:11,871 INFO L341 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-04-13 21:51:11,881 INFO L278 IsEmpty]: Start isEmpty. Operand has 2673 states, 2644 states have (on average 4.256051437216339) internal successors, (11253), 2672 states have internal predecessors, (11253), 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) [2025-04-13 21:51:11,885 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-04-13 21:51:11,885 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:51:11,886 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-04-13 21:51:11,886 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [consumer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE, consumer_routineErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-04-13 21:51:11,892 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:51:11,892 INFO L85 PathProgramCache]: Analyzing trace with hash 34208440, now seen corresponding path program 1 times [2025-04-13 21:51:11,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:51:11,897 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281370420] [2025-04-13 21:51:11,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:51:11,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:51:12,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 21:51:12,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 21:51:12,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:51:12,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 21:51:12,121 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 21:51:12,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 21:51:12,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 21:51:12,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:51:12,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 21:51:12,242 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 21:51:12,243 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 21:51:12,243 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2025-04-13 21:51:12,245 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (6 of 8 remaining) [2025-04-13 21:51:12,245 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2025-04-13 21:51:12,245 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2025-04-13 21:51:12,245 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (3 of 8 remaining) [2025-04-13 21:51:12,246 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (2 of 8 remaining) [2025-04-13 21:51:12,246 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2025-04-13 21:51:12,247 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (0 of 8 remaining) [2025-04-13 21:51:12,247 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 21:51:12,250 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 21:51:12,252 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 21:51:12,252 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-04-13 21:51:12,392 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-04-13 21:51:12,399 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 81 places, 129 transitions, 302 flow [2025-04-13 21:51:31,921 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 544170 states, 543905 states have (on average 6.991724657798697) internal successors, (3802834), 544169 states have internal predecessors, (3802834), 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) [2025-04-13 21:51:31,923 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 21:51:31,924 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@2a674eab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 21:51:31,924 INFO L341 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-04-13 21:51:33,054 INFO L278 IsEmpty]: Start isEmpty. Operand has 544170 states, 543905 states have (on average 6.991724657798697) internal successors, (3802834), 544169 states have internal predecessors, (3802834), 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) [2025-04-13 21:51:33,055 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-04-13 21:51:33,056 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:51:33,056 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-04-13 21:51:33,056 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [consumer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE, consumer_routineErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-04-13 21:51:33,056 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:51:33,056 INFO L85 PathProgramCache]: Analyzing trace with hash 38157201, now seen corresponding path program 1 times [2025-04-13 21:51:33,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:51:33,056 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232669184] [2025-04-13 21:51:33,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:51:33,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:51:33,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 21:51:33,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 21:51:33,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:51:33,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:51:34,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:51:34,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:51:34,719 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232669184] [2025-04-13 21:51:34,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232669184] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:51:34,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:51:34,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-13 21:51:34,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535612176] [2025-04-13 21:51:34,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:51:34,730 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-13 21:51:34,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:51:34,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-13 21:51:34,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-13 21:51:36,173 INFO L87 Difference]: Start difference. First operand has 544170 states, 543905 states have (on average 6.991724657798697) internal successors, (3802834), 544169 states have internal predecessors, (3802834), 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) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2025-04-13 21:51:52,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:51:52,306 INFO L93 Difference]: Finished difference Result 650551 states and 4611966 transitions. [2025-04-13 21:51:52,307 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-13 21:51:52,308 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2025-04-13 21:51:52,308 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:51:54,695 INFO L225 Difference]: With dead ends: 650551 [2025-04-13 21:51:54,696 INFO L226 Difference]: Without dead ends: 106401 [2025-04-13 21:51:55,523 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-13 21:51:55,525 INFO L437 NwaCegarLoop]: 7 mSDtfsCounter, 37 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-04-13 21:51:55,525 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 20 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-04-13 21:51:55,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106401 states. [2025-04-13 21:51:59,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106401 to 104767. [2025-04-13 21:52:00,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104767 states, 104746 states have (on average 5.572642392072251) internal successors, (583712), 104766 states have internal predecessors, (583712), 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) [2025-04-13 21:52:01,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104767 states to 104767 states and 583712 transitions. [2025-04-13 21:52:01,605 INFO L79 Accepts]: Start accepts. Automaton has 104767 states and 583712 transitions. Word has length 4 [2025-04-13 21:52:01,606 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:52:01,606 INFO L485 AbstractCegarLoop]: Abstraction has 104767 states and 583712 transitions. [2025-04-13 21:52:01,606 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2025-04-13 21:52:01,606 INFO L278 IsEmpty]: Start isEmpty. Operand 104767 states and 583712 transitions. [2025-04-13 21:52:01,607 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-04-13 21:52:01,607 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:52:01,607 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-04-13 21:52:01,607 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 21:52:01,607 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [consumer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE, consumer_routineErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-04-13 21:52:01,607 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:52:01,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1182821599, now seen corresponding path program 1 times [2025-04-13 21:52:01,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:52:01,608 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281684899] [2025-04-13 21:52:01,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:52:01,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:52:01,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-13 21:52:01,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-13 21:52:01,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:52:01,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:52:02,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 21:52:02,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:52:02,553 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281684899] [2025-04-13 21:52:02,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281684899] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:52:02,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:52:02,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 21:52:02,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403564448] [2025-04-13 21:52:02,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:52:02,554 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 21:52:02,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:52:02,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 21:52:02,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-13 21:52:02,554 INFO L87 Difference]: Start difference. First operand 104767 states and 583712 transitions. Second operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 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)