/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.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA -i ../../../trunk/examples/svcomp/pthread/singleton.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 17:05:32,524 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 17:05:32,581 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 17:05:32,585 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 17:05:32,585 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 17:05:32,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 17:05:32,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 17:05:32,608 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 17:05:32,608 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 17:05:32,608 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 17:05:32,609 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 17:05:32,609 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 17:05:32,609 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 17:05:32,609 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 17:05:32,610 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 17:05:32,610 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 17:05:32,610 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 17:05:32,610 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 17:05:32,610 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 17:05:32,610 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 17:05:32,610 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 17:05:32,610 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 17:05:32,610 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 17:05:32,610 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 17:05:32,610 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 17:05:32,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 17:05:32,610 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 17:05:32,611 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 17:05:32,611 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 17:05:32,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:05:32,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:05:32,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:05:32,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:05:32,611 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 17:05:32,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:05:32,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:05:32,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:05:32,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:05:32,611 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 17:05:32,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 17:05:32,612 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 17:05:32,612 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 17:05:32,612 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 17:05:32,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 17:05:32,612 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 17:05:32,612 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 17:05:32,612 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 17:05:32,612 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 [2025-04-13 17:05:32,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 17:05:32,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 17:05:32,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 17:05:32,825 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 17:05:32,826 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 17:05:32,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/singleton.i [2025-04-13 17:05:34,096 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b658f1d92/24e1f21c4bed4431a40d7b9733839772/FLAGf353c09f2 [2025-04-13 17:05:34,335 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 17:05:34,335 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.i [2025-04-13 17:05:34,352 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b658f1d92/24e1f21c4bed4431a40d7b9733839772/FLAGf353c09f2 [2025-04-13 17:05:35,096 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b658f1d92/24e1f21c4bed4431a40d7b9733839772 [2025-04-13 17:05:35,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 17:05:35,100 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 17:05:35,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 17:05:35,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 17:05:35,103 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 17:05:35,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:05:35" (1/1) ... [2025-04-13 17:05:35,104 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb9897a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:05:35, skipping insertion in model container [2025-04-13 17:05:35,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:05:35" (1/1) ... [2025-04-13 17:05:35,137 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 17:05:35,404 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/singleton.i[55547,55560] [2025-04-13 17:05:35,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:05:35,429 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 17:05:35,493 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/singleton.i[55547,55560] [2025-04-13 17:05:35,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:05:35,546 INFO L204 MainTranslator]: Completed translation [2025-04-13 17:05:35,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:05:35 WrapperNode [2025-04-13 17:05:35,547 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 17:05:35,547 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 17:05:35,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 17:05:35,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 17:05:35,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:05:35" (1/1) ... [2025-04-13 17:05:35,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:05:35" (1/1) ... [2025-04-13 17:05:35,588 INFO L138 Inliner]: procedures = 323, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2025-04-13 17:05:35,588 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 17:05:35,588 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 17:05:35,588 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 17:05:35,589 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 17:05:35,594 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:05:35" (1/1) ... [2025-04-13 17:05:35,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:05:35" (1/1) ... [2025-04-13 17:05:35,599 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:05:35" (1/1) ... [2025-04-13 17:05:35,615 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-04-13 17:05:35,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:05:35" (1/1) ... [2025-04-13 17:05:35,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:05:35" (1/1) ... [2025-04-13 17:05:35,622 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:05:35" (1/1) ... [2025-04-13 17:05:35,622 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:05:35" (1/1) ... [2025-04-13 17:05:35,623 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:05:35" (1/1) ... [2025-04-13 17:05:35,628 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:05:35" (1/1) ... [2025-04-13 17:05:35,629 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:05:35" (1/1) ... [2025-04-13 17:05:35,637 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 17:05:35,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 17:05:35,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 17:05:35,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 17:05:35,640 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:05:35" (1/1) ... [2025-04-13 17:05:35,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:05:35,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:05:35,664 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 17:05:35,666 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 17:05:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 17:05:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 17:05:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-13 17:05:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-13 17:05:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2025-04-13 17:05:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2025-04-13 17:05:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 17:05:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 17:05:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 17:05:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 17:05:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-13 17:05:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-13 17:05:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-13 17:05:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-13 17:05:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-13 17:05:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 17:05:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 17:05:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 17:05:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 17:05:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 17:05:35,683 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 17:05:35,766 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 17:05:35,767 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 17:05:35,886 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 17:05:35,887 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 17:05:35,887 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 17:05:35,963 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 17:05:35,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:05:35 BoogieIcfgContainer [2025-04-13 17:05:35,964 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 17:05:35,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 17:05:35,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 17:05:35,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 17:05:35,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 05:05:35" (1/3) ... [2025-04-13 17:05:35,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30564568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:05:35, skipping insertion in model container [2025-04-13 17:05:35,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:05:35" (2/3) ... [2025-04-13 17:05:35,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30564568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:05:35, skipping insertion in model container [2025-04-13 17:05:35,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:05:35" (3/3) ... [2025-04-13 17:05:35,971 INFO L128 eAbstractionObserver]: Analyzing ICFG singleton.i [2025-04-13 17:05:35,982 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 17:05:35,983 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG singleton.i that has 5 procedures, 36 locations, 31 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 17:05:35,983 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 17:05:36,055 INFO L143 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2025-04-13 17:05:36,077 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 81 places, 70 transitions, 237 flow [2025-04-13 17:05:36,194 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1552 states, 1551 states have (on average 3.923920051579626) internal successors, (6086), 1551 states have internal predecessors, (6086), 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 17:05:36,211 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 17:05:36,218 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;@48e4a906, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 17:05:36,218 INFO L341 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2025-04-13 17:05:36,226 INFO L278 IsEmpty]: Start isEmpty. Operand has 1552 states, 1551 states have (on average 3.923920051579626) internal successors, (6086), 1551 states have internal predecessors, (6086), 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 17:05:36,243 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-04-13 17:05:36,244 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:05:36,244 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:05:36,245 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2025-04-13 17:05:36,249 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:05:36,249 INFO L85 PathProgramCache]: Analyzing trace with hash -649958351, now seen corresponding path program 1 times [2025-04-13 17:05:36,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:05:36,255 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790464898] [2025-04-13 17:05:36,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:05:36,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:05:36,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-04-13 17:05:36,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 17:05:36,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:05:36,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:05:36,732 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 17:05:36,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:05:36,734 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790464898] [2025-04-13 17:05:36,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790464898] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:05:36,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:05:36,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-13 17:05:36,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575971359] [2025-04-13 17:05:36,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:05:36,739 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-13 17:05:36,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:05:36,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-13 17:05:36,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 17:05:36,759 INFO L87 Difference]: Start difference. First operand has 1552 states, 1551 states have (on average 3.923920051579626) internal successors, (6086), 1551 states have internal predecessors, (6086), 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 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 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 17:05:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:05:36,927 INFO L93 Difference]: Finished difference Result 2222 states and 8530 transitions. [2025-04-13 17:05:36,928 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-13 17:05:36,929 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2025-04-13 17:05:36,929 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:05:36,947 INFO L225 Difference]: With dead ends: 2222 [2025-04-13 17:05:36,947 INFO L226 Difference]: Without dead ends: 868 [2025-04-13 17:05:36,953 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-13 17:05:36,956 INFO L437 NwaCegarLoop]: 8 mSDtfsCounter, 21 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:05:36,956 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 12 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:05:36,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2025-04-13 17:05:37,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 868. [2025-04-13 17:05:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 3.640138408304498) internal successors, (3156), 867 states have internal predecessors, (3156), 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 17:05:37,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 3156 transitions. [2025-04-13 17:05:37,026 INFO L79 Accepts]: Start accepts. Automaton has 868 states and 3156 transitions. Word has length 36 [2025-04-13 17:05:37,026 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:05:37,026 INFO L485 AbstractCegarLoop]: Abstraction has 868 states and 3156 transitions. [2025-04-13 17:05:37,026 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 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 17:05:37,027 INFO L278 IsEmpty]: Start isEmpty. Operand 868 states and 3156 transitions. [2025-04-13 17:05:37,030 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-04-13 17:05:37,030 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:05:37,030 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:05:37,031 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 17:05:37,031 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2025-04-13 17:05:37,031 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:05:37,031 INFO L85 PathProgramCache]: Analyzing trace with hash -36296025, now seen corresponding path program 2 times [2025-04-13 17:05:37,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:05:37,032 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886119882] [2025-04-13 17:05:37,032 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:05:37,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:05:37,048 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 1 equivalence classes. [2025-04-13 17:05:37,067 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 17:05:37,067 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 17:05:37,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 17:05:37,067 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 17:05:37,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-04-13 17:05:37,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-04-13 17:05:37,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:05:37,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 17:05:37,118 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 17:05:37,119 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 17:05:37,120 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (11 of 12 remaining) [2025-04-13 17:05:37,121 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 12 remaining) [2025-04-13 17:05:37,121 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 12 remaining) [2025-04-13 17:05:37,121 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 12 remaining) [2025-04-13 17:05:37,121 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 12 remaining) [2025-04-13 17:05:37,121 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 12 remaining) [2025-04-13 17:05:37,121 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2025-04-13 17:05:37,123 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2025-04-13 17:05:37,123 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2025-04-13 17:05:37,123 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2025-04-13 17:05:37,123 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2025-04-13 17:05:37,123 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2025-04-13 17:05:37,123 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 17:05:37,125 INFO L422 BasicCegarLoop]: Path program histogram: [2] [2025-04-13 17:05:37,196 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 17:05:37,196 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 17:05:37,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 05:05:37 BasicIcfg [2025-04-13 17:05:37,200 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 17:05:37,201 INFO L158 Benchmark]: Toolchain (without parser) took 2100.87ms. Allocated memory is still 155.2MB. Free memory was 106.8MB in the beginning and 65.3MB in the end (delta: 41.5MB). Peak memory consumption was 42.4MB. Max. memory is 8.0GB. [2025-04-13 17:05:37,201 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 155.2MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 17:05:37,201 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.26ms. Allocated memory is still 155.2MB. Free memory was 106.8MB in the beginning and 71.5MB in the end (delta: 35.3MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2025-04-13 17:05:37,201 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.78ms. Allocated memory is still 155.2MB. Free memory was 71.5MB in the beginning and 69.5MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 17:05:37,201 INFO L158 Benchmark]: Boogie Preprocessor took 48.44ms. Allocated memory is still 155.2MB. Free memory was 69.5MB in the beginning and 67.3MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 17:05:37,202 INFO L158 Benchmark]: RCFGBuilder took 326.56ms. Allocated memory is still 155.2MB. Free memory was 67.3MB in the beginning and 45.0MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 17:05:37,203 INFO L158 Benchmark]: TraceAbstraction took 1234.74ms. Allocated memory is still 155.2MB. Free memory was 44.4MB in the beginning and 65.3MB in the end (delta: -20.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 17:05:37,203 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 155.2MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 446.26ms. Allocated memory is still 155.2MB. Free memory was 106.8MB in the beginning and 71.5MB in the end (delta: 35.3MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.78ms. Allocated memory is still 155.2MB. Free memory was 71.5MB in the beginning and 69.5MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 48.44ms. Allocated memory is still 155.2MB. Free memory was 69.5MB in the beginning and 67.3MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 326.56ms. Allocated memory is still 155.2MB. Free memory was 67.3MB in the beginning and 45.0MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1234.74ms. Allocated memory is still 155.2MB. Free memory was 44.4MB in the beginning and 65.3MB in the end (delta: -20.9MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1123]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1124] 0 char *v; [L1161] 0 pthread_t t; [L1162] FCALL, FORK 0 pthread_create(&t, 0, thread0, 0) VAL [\at(arg, Pre)={0:0}, t=-5, v={0:0}] [L1146] 1 pthread_t t1, t2, t3, t4, t5; [L1147] FCALL, FORK 1 pthread_create(&t1, 0, thread1, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, arg={0:0}, t1=-4, v={0:0}] [L1127] 2 v = malloc(sizeof(char)) [L1128] 2 return 0; [L1148] FCALL, JOIN 2 pthread_join(t1, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, t1=-4, v={-2:0}] [L1149] FCALL, FORK 1 pthread_create(&t2, 0, thread2, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, v={-2:0}] [L1150] FCALL, FORK 1 pthread_create(&t3, 0, thread3, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, v={-2:0}] [L1133] 3 v[0] = 'X' VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, v={-2:0}] [L1151] FCALL, FORK 1 pthread_create(&t4, 0, thread2, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, v={-2:0}] [L1152] FCALL, FORK 1 pthread_create(&t5, 0, thread2, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] [L1133] 6 v[0] = 'X' VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] [L1135] 6 return 0; [L1153] FCALL, JOIN 3 pthread_join(t2, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] [L1133] 5 v[0] = 'X' VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] [L1135] 5 return 0; [L1140] 4 v[0] = 'Y' VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] [L1142] 4 return 0; [L1154] FCALL, JOIN 4 pthread_join(t3, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] [L1155] FCALL, JOIN 5 pthread_join(t4, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] [L1156] FCALL, JOIN 6 pthread_join(t5, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] [L1157] 1 return 0; [L1163] FCALL, JOIN 1 pthread_join(t, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, t=-5, v={-2:0}] [L1164] EXPR 0 v[0] [L1164] CALL 0 __VERIFIER_assert(v[0] == 'X') [L1123] COND TRUE 0 !expression [L1123] 0 reach_error() VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(expression, Pre)=0, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-2:0}] - UnprovableResult [Line: 1150]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1147]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1151]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1149]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1152]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1162]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1152]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1147]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1149]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1150]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1151]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 84 locations, 105 edges, 12 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85 IncrementalHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 8 mSDtfsCounter, 85 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1552occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 71 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-04-13 17:05:37,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...