/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-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 21:34:00,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 21:34:00,616 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 21:34:00,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 21:34:00,622 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 21:34:00,641 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 21:34:00,642 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 21:34:00,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 21:34:00,643 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 21:34:00,643 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 21:34:00,643 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 21:34:00,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 21:34:00,644 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 21:34:00,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 21:34:00,644 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 21:34:00,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 21:34:00,644 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 21:34:00,644 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 21:34:00,644 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 21:34:00,644 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 21:34:00,644 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 21:34:00,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 21:34:00,645 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 21:34:00,645 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 21:34:00,645 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 21:34:00,645 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 21:34:00,645 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 21:34:00,645 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 21:34:00,645 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 21:34:00,645 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:34:00,645 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:34:00,645 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:34:00,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:34:00,645 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 21:34:00,645 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 21:34:00,645 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 21:34:00,645 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 21:34:00,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:34:00,645 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 21:34:00,645 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 21:34:00,646 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 21:34:00,646 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 21:34:00,646 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 21:34:00,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 21:34:00,646 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 21:34:00,646 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 21:34:00,646 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 21:34:00,646 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 21:34:00,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 21:34:00,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 21:34:00,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 21:34:00,889 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 21:34:00,889 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 21:34:00,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2025-04-13 21:34:02,131 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee19ba3fe/6f45fd3044ed40028615cd0e1511a331/FLAG8fb79ba8a [2025-04-13 21:34:02,357 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 21:34:02,358 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2025-04-13 21:34:02,368 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee19ba3fe/6f45fd3044ed40028615cd0e1511a331/FLAG8fb79ba8a [2025-04-13 21:34:03,181 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee19ba3fe/6f45fd3044ed40028615cd0e1511a331 [2025-04-13 21:34:03,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 21:34:03,184 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 21:34:03,185 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 21:34:03,185 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 21:34:03,188 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 21:34:03,188 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:34:03" (1/1) ... [2025-04-13 21:34:03,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657750c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:34:03, skipping insertion in model container [2025-04-13 21:34:03,189 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 09:34:03" (1/1) ... [2025-04-13 21:34:03,215 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 21:34:03,466 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-atomic/peterson.i[32348,32361] [2025-04-13 21:34:03,475 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-atomic/peterson.i[32502,32515] [2025-04-13 21:34:03,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:34:03,494 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 21:34:03,551 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-atomic/peterson.i[32348,32361] [2025-04-13 21:34:03,552 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-atomic/peterson.i[32502,32515] [2025-04-13 21:34:03,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 21:34:03,574 INFO L204 MainTranslator]: Completed translation [2025-04-13 21:34:03,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:34:03 WrapperNode [2025-04-13 21:34:03,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 21:34:03,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 21:34:03,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 21:34:03,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 21:34:03,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:34:03" (1/1) ... [2025-04-13 21:34:03,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:34:03" (1/1) ... [2025-04-13 21:34:03,599 INFO L138 Inliner]: procedures = 166, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2025-04-13 21:34:03,599 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 21:34:03,599 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 21:34:03,599 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 21:34:03,599 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 21:34:03,605 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:34:03" (1/1) ... [2025-04-13 21:34:03,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:34:03" (1/1) ... [2025-04-13 21:34:03,606 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:34:03" (1/1) ... [2025-04-13 21:34:03,616 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 21:34:03,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:34:03" (1/1) ... [2025-04-13 21:34:03,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:34:03" (1/1) ... [2025-04-13 21:34:03,618 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:34:03" (1/1) ... [2025-04-13 21:34:03,619 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:34:03" (1/1) ... [2025-04-13 21:34:03,619 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:34:03" (1/1) ... [2025-04-13 21:34:03,624 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:34:03" (1/1) ... [2025-04-13 21:34:03,626 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 21:34:03,630 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-13 21:34:03,630 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-13 21:34:03,630 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-13 21:34:03,631 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:34:03" (1/1) ... [2025-04-13 21:34:03,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 21:34:03,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 21:34:03,652 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 21:34:03,657 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 21:34:03,670 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2025-04-13 21:34:03,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2025-04-13 21:34:03,670 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-04-13 21:34:03,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-04-13 21:34:03,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 21:34:03,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 21:34:03,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 21:34:03,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 21:34:03,671 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 21:34:03,760 INFO L256 CfgBuilder]: Building ICFG [2025-04-13 21:34:03,761 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 21:34:03,834 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 21:34:03,835 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 21:34:03,835 INFO L318 CfgBuilder]: Performing block encoding [2025-04-13 21:34:03,899 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 21:34:03,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:34:03 BoogieIcfgContainer [2025-04-13 21:34:03,900 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-13 21:34:03,901 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 21:34:03,901 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 21:34:03,904 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 21:34:03,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 09:34:03" (1/3) ... [2025-04-13 21:34:03,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13368bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:34:03, skipping insertion in model container [2025-04-13 21:34:03,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 09:34:03" (2/3) ... [2025-04-13 21:34:03,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13368bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 09:34:03, skipping insertion in model container [2025-04-13 21:34:03,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.04 09:34:03" (3/3) ... [2025-04-13 21:34:03,906 INFO L128 eAbstractionObserver]: Analyzing ICFG peterson.i [2025-04-13 21:34:03,917 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 21:34:03,918 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG peterson.i that has 3 procedures, 25 locations, 24 edges, 1 initial locations, 2 loop locations, and 2 error locations. [2025-04-13 21:34:03,919 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 21:34:03,954 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-13 21:34:03,974 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 26 transitions, 66 flow [2025-04-13 21:34:04,002 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 133 states, 130 states have (on average 2.453846153846154) internal successors, (319), 132 states have internal predecessors, (319), 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 21:34:04,021 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 21:34:04,029 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;@2c2cf7b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 21:34:04,029 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-13 21:34:04,032 INFO L278 IsEmpty]: Start isEmpty. Operand has 133 states, 130 states have (on average 2.453846153846154) internal successors, (319), 132 states have internal predecessors, (319), 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 21:34:04,035 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-04-13 21:34:04,035 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 21:34:04,036 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-04-13 21:34:04,036 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-04-13 21:34:04,039 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 21:34:04,040 INFO L85 PathProgramCache]: Analyzing trace with hash 28651208, now seen corresponding path program 1 times [2025-04-13 21:34:04,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 21:34:04,046 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441085463] [2025-04-13 21:34:04,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 21:34:04,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 21:34:04,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-13 21:34:04,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-13 21:34:04,108 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 21:34:04,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 21:34:04,164 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 21:34:04,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 21:34:04,164 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441085463] [2025-04-13 21:34:04,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441085463] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 21:34:04,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 21:34:04,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-13 21:34:04,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522775402] [2025-04-13 21:34:04,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 21:34:04,169 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-13 21:34:04,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 21:34:04,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-13 21:34:04,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-13 21:34:04,185 INFO L87 Difference]: Start difference. First operand has 133 states, 130 states have (on average 2.453846153846154) internal successors, (319), 132 states have internal predecessors, (319), 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 2 states, 1 states have (on average 6.0) internal successors, (6), 2 states have internal predecessors, (6), 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 21:34:04,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 21:34:04,242 INFO L93 Difference]: Finished difference Result 133 states and 319 transitions. [2025-04-13 21:34:04,243 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-13 21:34:04,243 INFO L79 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 6.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2025-04-13 21:34:04,244 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 21:34:04,247 INFO L225 Difference]: With dead ends: 133 [2025-04-13 21:34:04,247 INFO L226 Difference]: Without dead ends: 0 [2025-04-13 21:34:04,252 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-13 21:34:04,255 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 21:34:04,256 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 21:34:04,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-04-13 21:34:04,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-04-13 21:34:04,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 21:34:04,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-04-13 21:34:04,272 INFO L79 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2025-04-13 21:34:04,272 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 21:34:04,272 INFO L485 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-13 21:34:04,272 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 6.0) internal successors, (6), 2 states have internal predecessors, (6), 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 21:34:04,272 INFO L278 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-04-13 21:34:04,272 INFO L284 IsEmpty]: Finished isEmpty. No accepting run. [2025-04-13 21:34:04,274 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2025-04-13 21:34:04,274 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2025-04-13 21:34:04,274 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2025-04-13 21:34:04,274 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2025-04-13 21:34:04,274 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2025-04-13 21:34:04,274 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2025-04-13 21:34:04,274 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 21:34:04,276 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 21:34:04,278 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 21:34:04,278 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 21:34:04,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 09:34:04 BasicIcfg [2025-04-13 21:34:04,280 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 21:34:04,281 INFO L158 Benchmark]: Toolchain (without parser) took 1096.68ms. Allocated memory is still 155.2MB. Free memory was 106.5MB in the beginning and 36.0MB in the end (delta: 70.5MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. [2025-04-13 21:34:04,281 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 21:34:04,281 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.20ms. Allocated memory is still 155.2MB. Free memory was 106.5MB in the beginning and 83.9MB in the end (delta: 22.6MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 21:34:04,281 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.44ms. Allocated memory is still 155.2MB. Free memory was 83.0MB in the beginning and 81.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 21:34:04,281 INFO L158 Benchmark]: Boogie Preprocessor took 26.80ms. Allocated memory is still 155.2MB. Free memory was 81.3MB in the beginning and 80.4MB in the end (delta: 869.5kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 21:34:04,281 INFO L158 Benchmark]: IcfgBuilder took 269.99ms. Allocated memory is still 155.2MB. Free memory was 80.4MB in the beginning and 61.2MB in the end (delta: 19.2MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-13 21:34:04,282 INFO L158 Benchmark]: TraceAbstraction took 379.05ms. Allocated memory is still 155.2MB. Free memory was 60.3MB in the beginning and 36.0MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-13 21:34:04,282 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 390.20ms. Allocated memory is still 155.2MB. Free memory was 106.5MB in the beginning and 83.9MB in the end (delta: 22.6MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.44ms. Allocated memory is still 155.2MB. Free memory was 83.0MB in the beginning and 81.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 26.80ms. Allocated memory is still 155.2MB. Free memory was 81.3MB in the beginning and 80.4MB in the end (delta: 869.5kB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 269.99ms. Allocated memory is still 155.2MB. Free memory was 80.4MB in the beginning and 61.2MB in the end (delta: 19.2MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 379.05ms. Allocated memory is still 155.2MB. Free memory was 60.3MB in the beginning and 36.0MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. 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 - PositiveResult [Line: 748]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 739]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 43 locations, 46 edges, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 4 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 21:34:04,294 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...