/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-ext/28_buggy_simple_loop1_vf.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 21:36:25,394 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 21:36:25,442 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 21:36:25,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 21:36:25,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 21:36:25,474 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 21:36:25,475 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 21:36:25,475 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 21:36:25,476 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 21:36:25,476 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 21:36:25,476 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 21:36:25,476 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 21:36:25,477 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 21:36:25,477 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 21:36:25,477 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 21:36:25,477 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 21:36:25,477 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 21:36:25,477 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 21:36:25,477 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 21:36:25,478 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 21:36:25,478 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 21:36:25,478 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 21:36:25,478 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 21:36:25,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 21:36:25,478 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 21:36:25,478 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 21:36:25,478 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 21:36:25,478 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 21:36:25,478 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 21:36:25,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:36:25,478 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:36:25,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:36:25,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:36:25,479 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 21:36:25,479 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:36:25,479 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:36:25,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:36:25,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:36:25,479 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 21:36:25,479 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 21:36:25,479 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 21:36:25,479 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 21:36:25,479 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 21:36:25,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 21:36:25,479 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 21:36:25,479 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 21:36:25,479 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 21:36:25,479 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 21:36:25,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 21:36:25,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 21:36:25,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 21:36:25,852 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 21:36:25,854 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 21:36:25,855 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2025-04-13 21:36:27,190 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/729820ad3/d7c6e28813764ff9a3ed7b345ce1bf59/FLAGdd40ba8e7 [2025-04-13 21:36:27,449 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 21:36:27,449 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/28_buggy_simple_loop1_vf.i [2025-04-13 21:36:27,466 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/729820ad3/d7c6e28813764ff9a3ed7b345ce1bf59/FLAGdd40ba8e7 [2025-04-13 21:36:28,191 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/729820ad3/d7c6e28813764ff9a3ed7b345ce1bf59 [2025-04-13 21:36:28,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 21:36:28,195 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 21:36:28,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 21:36:28,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 21:36:28,198 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 21:36:28,199 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:36:28" (1/1) ... [2025-04-13 21:36:28,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386b281c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:36:28, skipping insertion in model container [2025-04-13 21:36:28,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:36:28" (1/1) ... [2025-04-13 21:36:28,221 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 21:36:28,442 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-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2025-04-13 21:36:28,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:36:28,454 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 21:36:28,504 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-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2025-04-13 21:36:28,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:36:28,524 INFO L204 MainTranslator]: Completed translation [2025-04-13 21:36:28,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:36:28 WrapperNode [2025-04-13 21:36:28,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 21:36:28,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 21:36:28,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 21:36:28,525 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 21:36:28,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:36:28" (1/1) ... [2025-04-13 21:36:28,537 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:36:28" (1/1) ... [2025-04-13 21:36:28,547 INFO L138 Inliner]: procedures = 166, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2025-04-13 21:36:28,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 21:36:28,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 21:36:28,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 21:36:28,548 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 21:36:28,552 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:36:28" (1/1) ... [2025-04-13 21:36:28,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:36:28" (1/1) ... [2025-04-13 21:36:28,553 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:36:28" (1/1) ... [2025-04-13 21:36:28,560 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 21:36:28,561 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:36:28" (1/1) ... [2025-04-13 21:36:28,561 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:36:28" (1/1) ... [2025-04-13 21:36:28,566 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:36:28" (1/1) ... [2025-04-13 21:36:28,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:36:28" (1/1) ... [2025-04-13 21:36:28,567 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:36:28" (1/1) ... [2025-04-13 21:36:28,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:36:28" (1/1) ... [2025-04-13 21:36:28,570 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 21:36:28,570 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 21:36:28,570 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 21:36:28,570 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 21:36:28,571 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:36:28" (1/1) ... [2025-04-13 21:36:28,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:36:28,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:36:28,600 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 21:36:28,603 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 21:36:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-04-13 21:36:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-04-13 21:36:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 21:36:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 21:36:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 21:36:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 21:36:28,620 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 21:36:28,694 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 21:36:28,695 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 21:36:28,810 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 21:36:28,811 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 21:36:28,811 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 21:36:28,904 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:36:28,910 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:36:28,923 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 21:36:28,936 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 21:36:28,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:36:28 BoogieIcfgContainer [2025-04-13 21:36:28,936 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 21:36:28,939 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 21:36:28,939 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 21:36:28,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 21:36:28,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 09:36:28" (1/3) ... [2025-04-13 21:36:28,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5fdf5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:36:28, skipping insertion in model container [2025-04-13 21:36:28,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:36:28" (2/3) ... [2025-04-13 21:36:28,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d5fdf5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:36:28, skipping insertion in model container [2025-04-13 21:36:28,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:36:28" (3/3) ... [2025-04-13 21:36:28,944 INFO L128 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2025-04-13 21:36:28,955 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 21:36:28,957 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28_buggy_simple_loop1_vf.i that has 2 procedures, 9 locations, 14 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-04-13 21:36:28,958 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 21:36:29,006 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 21:36:29,031 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 12 places, 15 transitions, 34 flow [2025-04-13 21:36:29,041 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 21 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 20 states have internal predecessors, (50), 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 21:36:29,060 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 21:36:29,070 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;@6425622a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 21:36:29,070 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-13 21:36:29,072 INFO L278 IsEmpty]: Start isEmpty. Operand has 21 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 20 states have internal predecessors, (50), 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 21:36:29,075 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-04-13 21:36:29,075 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:36:29,076 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-04-13 21:36:29,076 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-13 21:36:29,079 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:36:29,079 INFO L85 PathProgramCache]: Analyzing trace with hash 4760193, now seen corresponding path program 1 times [2025-04-13 21:36:29,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:36:29,085 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532394620] [2025-04-13 21:36:29,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:36:29,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:36:29,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 21:36:29,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 21:36:29,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:36:29,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 21:36:29,178 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 21:36:29,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 21:36:29,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 21:36:29,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:36:29,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 21:36:29,205 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 21:36:29,206 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 21:36:29,208 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2025-04-13 21:36:29,209 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2025-04-13 21:36:29,209 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2025-04-13 21:36:29,209 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 21:36:29,213 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 21:36:29,215 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-04-13 21:36:29,215 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-04-13 21:36:29,257 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-13 21:36:29,262 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 25 transitions, 60 flow [2025-04-13 21:36:29,283 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 115 states, 107 states have (on average 4.401869158878505) internal successors, (471), 114 states have internal predecessors, (471), 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 21:36:29,284 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 21:36:29,288 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;@6425622a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 21:36:29,289 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 21:36:29,289 INFO L278 IsEmpty]: Start isEmpty. Operand has 115 states, 107 states have (on average 4.401869158878505) internal successors, (471), 114 states have internal predecessors, (471), 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 21:36:29,289 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-04-13 21:36:29,289 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:36:29,289 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-04-13 21:36:29,290 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-04-13 21:36:29,290 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:36:29,290 INFO L85 PathProgramCache]: Analyzing trace with hash 5538815, now seen corresponding path program 1 times [2025-04-13 21:36:29,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:36:29,290 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145203356] [2025-04-13 21:36:29,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:36:29,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:36:29,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 21:36:29,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 21:36:29,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:36:29,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 21:36:29,325 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-13 21:36:29,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-13 21:36:29,344 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-13 21:36:29,344 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:36:29,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-13 21:36:29,347 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-13 21:36:29,347 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-13 21:36:29,347 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-13 21:36:29,347 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2025-04-13 21:36:29,347 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-13 21:36:29,347 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2025-04-13 21:36:29,348 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 21:36:29,349 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 21:36:29,377 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2025-04-13 21:36:29,377 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 21:36:29,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 09:36:29 BasicIcfg [2025-04-13 21:36:29,380 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 21:36:29,380 INFO L158 Benchmark]: Toolchain (without parser) took 1185.82ms. Allocated memory is still 125.8MB. Free memory was 86.0MB in the beginning and 67.4MB in the end (delta: 18.6MB). Peak memory consumption was 19.3MB. Max. memory is 8.0GB. [2025-04-13 21:36:29,381 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 21:36:29,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.85ms. Allocated memory is still 125.8MB. Free memory was 85.5MB in the beginning and 61.1MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-13 21:36:29,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.49ms. Allocated memory is still 125.8MB. Free memory was 61.1MB in the beginning and 59.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 21:36:29,381 INFO L158 Benchmark]: Boogie Preprocessor took 22.03ms. Allocated memory is still 125.8MB. Free memory was 59.6MB in the beginning and 58.0MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 21:36:29,382 INFO L158 Benchmark]: IcfgBuilder took 365.95ms. Allocated memory is still 125.8MB. Free memory was 58.0MB in the beginning and 34.9MB in the end (delta: 23.1MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 21:36:29,382 INFO L158 Benchmark]: TraceAbstraction took 440.59ms. Allocated memory is still 125.8MB. Free memory was 34.4MB in the beginning and 67.4MB in the end (delta: -33.0MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 21:36:29,383 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 328.85ms. Allocated memory is still 125.8MB. Free memory was 85.5MB in the beginning and 61.1MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.49ms. Allocated memory is still 125.8MB. Free memory was 61.1MB in the beginning and 59.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 22.03ms. Allocated memory is still 125.8MB. Free memory was 59.6MB in the beginning and 58.0MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * IcfgBuilder took 365.95ms. Allocated memory is still 125.8MB. Free memory was 58.0MB in the beginning and 34.9MB in the end (delta: 23.1MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 440.59ms. Allocated memory is still 125.8MB. Free memory was 34.4MB in the beginning and 67.4MB in the end (delta: -33.0MB). 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 - 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: 695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L700] 0 pthread_t t; [L701] COND TRUE 0 1 [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [\at(arg, Pre)={0:0}, t=-1] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [\at(arg, Pre)={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i