/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/gemcutter/svcomp-Reach-32bit-GemCutter_Default.epf --preprocessor.replace.while.statements.and.if-then-else.statements false -i ../../../trunk/examples/svcomp/pthread-theta/unwind1-nondet.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-dev-4cc0a57-m [2025-04-14 17:01:56,966 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 17:01:57,010 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/gemcutter/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-14 17:01:57,014 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 17:01:57,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 17:01:57,036 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 17:01:57,036 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 17:01:57,036 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 17:01:57,037 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 17:01:57,037 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 17:01:57,037 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 17:01:57,037 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 17:01:57,037 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 17:01:57,037 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 17:01:57,037 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 17:01:57,037 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 17:01:57,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 17:01:57,037 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 17:01:57,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 17:01:57,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 17:01:57,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 17:01:57,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 17:01:57,038 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 17:01:57,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 17:01:57,038 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 17:01:57,038 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 17:01:57,038 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 17:01:57,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 17:01:57,038 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 17:01:57,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 17:01:57,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 17:01:57,038 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 17:01:57,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 17:01:57,038 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 17:01:57,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 17:01:57,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 17:01:57,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 17:01:57,041 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 17:01:57,041 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 17:01:57,041 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-14 17:01:57,041 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 17:01:57,041 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 17:01:57,041 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-14 17:01:57,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 17:01:57,041 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-14 17:01:57,041 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-14 17:01:57,041 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-14 17:01:57,041 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false [2025-04-14 17:01:57,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 17:01:57,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 17:01:57,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 17:01:57,239 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 17:01:57,239 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 17:01:57,241 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-theta/unwind1-nondet.i [2025-04-14 17:01:58,508 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c42c73d0/ba6b32bedc6b462eab419ee8ab756ae8/FLAGbb88eef46 [2025-04-14 17:01:58,732 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 17:01:58,733 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-theta/unwind1-nondet.i [2025-04-14 17:01:58,747 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c42c73d0/ba6b32bedc6b462eab419ee8ab756ae8/FLAGbb88eef46 [2025-04-14 17:01:59,508 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c42c73d0/ba6b32bedc6b462eab419ee8ab756ae8 [2025-04-14 17:01:59,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 17:01:59,511 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 17:01:59,512 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 17:01:59,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 17:01:59,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 17:01:59,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 05:01:59" (1/1) ... [2025-04-14 17:01:59,517 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b0c498e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:01:59, skipping insertion in model container [2025-04-14 17:01:59,517 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 05:01:59" (1/1) ... [2025-04-14 17:01:59,542 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 17:01:59,806 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-theta/unwind1-nondet.i[33026,33039] [2025-04-14 17:01:59,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 17:01:59,825 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 17:01:59,869 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-theta/unwind1-nondet.i[33026,33039] [2025-04-14 17:01:59,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 17:01:59,894 INFO L204 MainTranslator]: Completed translation [2025-04-14 17:01:59,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:01:59 WrapperNode [2025-04-14 17:01:59,895 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 17:01:59,895 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 17:01:59,895 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 17:01:59,895 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 17:01:59,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:01:59" (1/1) ... [2025-04-14 17:01:59,908 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:01:59" (1/1) ... [2025-04-14 17:01:59,923 INFO L138 Inliner]: procedures = 169, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2025-04-14 17:01:59,923 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 17:01:59,923 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 17:01:59,923 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 17:01:59,923 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 17:01:59,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:01:59" (1/1) ... [2025-04-14 17:01:59,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:01:59" (1/1) ... [2025-04-14 17:01:59,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:01:59" (1/1) ... [2025-04-14 17:01:59,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:01:59" (1/1) ... [2025-04-14 17:01:59,933 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:01:59" (1/1) ... [2025-04-14 17:01:59,934 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:01:59" (1/1) ... [2025-04-14 17:01:59,934 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:01:59" (1/1) ... [2025-04-14 17:01:59,935 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:01:59" (1/1) ... [2025-04-14 17:01:59,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 17:01:59,938 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 17:01:59,938 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 17:01:59,938 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 17:01:59,938 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:01:59" (1/1) ... [2025-04-14 17:01:59,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 17:01:59,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 17:01:59,962 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) [2025-04-14 17:01:59,964 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 [2025-04-14 17:01:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 17:01:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-04-14 17:01:59,978 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-04-14 17:01:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-04-14 17:01:59,978 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-04-14 17:01:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-14 17:01:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 17:01:59,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 17:01:59,979 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-14 17:02:00,058 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 17:02:00,059 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 17:02:00,141 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 17:02:00,142 INFO L307 CfgBuilder]: Performing block encoding [2025-04-14 17:02:00,212 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 17:02:00,213 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 17:02:00,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 05:02:00 BoogieIcfgContainer [2025-04-14 17:02:00,213 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 17:02:00,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 17:02:00,214 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 17:02:00,217 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 17:02:00,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 05:01:59" (1/3) ... [2025-04-14 17:02:00,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bdf812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 05:02:00, skipping insertion in model container [2025-04-14 17:02:00,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:01:59" (2/3) ... [2025-04-14 17:02:00,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bdf812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 05:02:00, skipping insertion in model container [2025-04-14 17:02:00,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 05:02:00" (3/3) ... [2025-04-14 17:02:00,220 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind1-nondet.i [2025-04-14 17:02:00,230 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 17:02:00,232 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind1-nondet.i that has 3 procedures, 22 locations, 22 edges, 1 initial locations, 1 loop locations, and 1 error locations. [2025-04-14 17:02:00,232 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 17:02:00,266 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-14 17:02:00,299 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 17:02:00,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-14 17:02:00,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 17:02:00,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-14 17:02:00,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-14 17:02:00,359 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-14 17:02:00,371 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == f2Thread1of1ForFork0 ======== [2025-04-14 17:02:00,379 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=PARTIAL_ORDER_FA, 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;@cb31e8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 17:02:00,379 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-04-14 17:02:00,512 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-14 17:02:00,512 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-14 17:02:00,513 INFO L139 ounterexampleChecker]: Examining path program with hash -1176480858, occurence #1 [2025-04-14 17:02:00,513 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-14 17:02:00,513 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-14 17:02:00,516 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 17:02:00,516 INFO L85 PathProgramCache]: Analyzing trace with hash 255494044, now seen corresponding path program 1 times [2025-04-14 17:02:00,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 17:02:00,522 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337612118] [2025-04-14 17:02:00,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 17:02:00,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 17:02:00,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-14 17:02:00,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-14 17:02:00,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 17:02:00,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 17:02:00,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 17:02:00,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 17:02:00,822 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337612118] [2025-04-14 17:02:00,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337612118] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 17:02:00,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 17:02:00,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 17:02:00,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536057997] [2025-04-14 17:02:00,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 17:02:00,830 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 17:02:00,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 17:02:00,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 17:02:00,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 17:02:00,845 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-14 17:02:00,846 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-14 17:02:00,847 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-04-14 17:02:00,847 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-14 17:02:00,906 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 17:02:00,906 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 17:02:00,906 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-14 17:02:00,906 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-14 17:02:00,907 INFO L139 ounterexampleChecker]: Examining path program with hash -1176480858, occurence #2 [2025-04-14 17:02:00,907 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-14 17:02:00,907 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 1 [2025-04-14 17:02:00,924 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-14 17:02:00,925 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 7 [2025-04-14 17:02:00,925 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-14 17:02:00,925 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-14 17:02:00,925 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-14 17:02:00,925 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 17:02:00,925 INFO L85 PathProgramCache]: Analyzing trace with hash -669649877, now seen corresponding path program 1 times [2025-04-14 17:02:00,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 17:02:00,925 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186880105] [2025-04-14 17:02:00,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 17:02:00,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 17:02:00,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-14 17:02:00,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-14 17:02:00,944 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 17:02:00,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 17:02:01,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 17:02:01,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 17:02:01,036 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186880105] [2025-04-14 17:02:01,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186880105] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 17:02:01,036 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296019258] [2025-04-14 17:02:01,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 17:02:01,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 17:02:01,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 17:02:01,039 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-14 17:02:01,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-14 17:02:01,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-14 17:02:01,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-14 17:02:01,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 17:02:01,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 17:02:01,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-04-14 17:02:01,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 17:02:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 17:02:01,134 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 17:02:01,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-14 17:02:01,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296019258] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 17:02:01,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 17:02:01,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2025-04-14 17:02:01,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935787832] [2025-04-14 17:02:01,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 17:02:01,178 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-14 17:02:01,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 17:02:01,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-14 17:02:01,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-04-14 17:02:01,178 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-14 17:02:01,179 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-14 17:02:01,179 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2025-04-14 17:02:01,179 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-14 17:02:01,179 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-14 17:02:01,356 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 17:02:01,357 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-14 17:02:01,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-14 17:02:01,557 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-04-14 17:02:01,557 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-14 17:02:01,558 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-14 17:02:01,558 INFO L139 ounterexampleChecker]: Examining path program with hash -271726187, occurence #1 [2025-04-14 17:02:01,558 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-14 17:02:01,558 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-14 17:02:01,558 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 17:02:01,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1957448779, now seen corresponding path program 1 times [2025-04-14 17:02:01,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 17:02:01,558 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295880332] [2025-04-14 17:02:01,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 17:02:01,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 17:02:01,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-14 17:02:01,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-14 17:02:01,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 17:02:01,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 17:02:01,568 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-14 17:02:01,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-14 17:02:01,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-14 17:02:01,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 17:02:01,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 17:02:01,583 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-14 17:02:01,584 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-14 17:02:01,584 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-04-14 17:02:01,585 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 17:02:01,590 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-14 17:02:01,593 INFO L320 ceAbstractionStarter]: Result for error location f2Thread1of1ForFork0 was UNSAFE (1/2) [2025-04-14 17:02:01,644 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 17:02:01,644 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 17:02:01,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-04-14 17:02:01,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 05:02:01 BasicIcfg [2025-04-14 17:02:01,652 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 17:02:01,653 INFO L158 Benchmark]: Toolchain (without parser) took 2141.36ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 105.8MB in the end (delta: -3.9MB). Peak memory consumption was 74.5MB. Max. memory is 8.0GB. [2025-04-14 17:02:01,653 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 155.2MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 17:02:01,653 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.82ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 79.0MB in the end (delta: 23.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-14 17:02:01,653 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.72ms. Allocated memory is still 142.6MB. Free memory was 79.0MB in the beginning and 76.9MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 17:02:01,656 INFO L158 Benchmark]: Boogie Preprocessor took 13.98ms. Allocated memory is still 142.6MB. Free memory was 76.9MB in the beginning and 76.1MB in the end (delta: 804.3kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 17:02:01,657 INFO L158 Benchmark]: IcfgBuilder took 275.38ms. Allocated memory is still 142.6MB. Free memory was 76.1MB in the beginning and 56.4MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2025-04-14 17:02:01,657 INFO L158 Benchmark]: TraceAbstraction took 1437.55ms. Allocated memory is still 142.6MB. Free memory was 55.9MB in the beginning and 105.8MB in the end (delta: -49.9MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2025-04-14 17:02:01,658 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 155.2MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 382.82ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 79.0MB in the end (delta: 23.0MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.72ms. Allocated memory is still 142.6MB. Free memory was 79.0MB in the beginning and 76.9MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.98ms. Allocated memory is still 142.6MB. Free memory was 76.9MB in the beginning and 76.1MB in the end (delta: 804.3kB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 275.38ms. Allocated memory is still 142.6MB. Free memory was 76.1MB in the beginning and 56.4MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 1437.55ms. Allocated memory is still 142.6MB. Free memory was 55.9MB in the beginning and 105.8MB in the end (delta: -49.9MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Partial order reduction statistics Independence relation #1 benchmarks: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 297, independent: 259, independent conditional: 85, independent unconditional: 174, dependent: 38, dependent conditional: 32, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 266, independent: 259, independent conditional: 85, independent unconditional: 174, dependent: 7, dependent conditional: 1, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 266, independent: 259, independent conditional: 85, independent unconditional: 174, dependent: 7, dependent conditional: 1, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 268, independent: 259, independent conditional: 85, independent unconditional: 174, dependent: 9, dependent conditional: 3, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 268, independent: 259, independent conditional: 0, independent unconditional: 259, dependent: 9, dependent conditional: 2, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 268, independent: 259, independent conditional: 0, independent unconditional: 259, dependent: 9, dependent conditional: 2, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 183, independent: 175, independent conditional: 0, independent unconditional: 175, dependent: 8, dependent conditional: 2, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 183, independent: 173, independent conditional: 0, independent unconditional: 173, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 10, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 8, dependent conditional: 2, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 10, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 8, dependent conditional: 2, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 178, independent: 52, independent conditional: 0, independent unconditional: 52, dependent: 126, dependent conditional: 27, dependent unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 268, independent: 84, independent conditional: 0, independent unconditional: 84, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 183, unknown conditional: 2, unknown unconditional: 181] , Statistics on independence cache: Total cache size (in pairs): 183, Positive cache size: 175, Positive conditional cache size: 0, Positive unconditional cache size: 175, Negative cache size: 8, Negative conditional cache size: 2, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 86, Maximal queried relation: 2, Independence queries for same thread: 31, Persistent sets #1 benchmarks: Persistent set computation time: 0.2s, Number of persistent set computation: 29, Number of trivial persistent sets: 26, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 180, independent: 174, independent conditional: 0, independent unconditional: 174, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 297, independent: 259, independent conditional: 85, independent unconditional: 174, dependent: 38, dependent conditional: 32, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 266, independent: 259, independent conditional: 85, independent unconditional: 174, dependent: 7, dependent conditional: 1, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 266, independent: 259, independent conditional: 85, independent unconditional: 174, dependent: 7, dependent conditional: 1, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 268, independent: 259, independent conditional: 85, independent unconditional: 174, dependent: 9, dependent conditional: 3, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 268, independent: 259, independent conditional: 0, independent unconditional: 259, dependent: 9, dependent conditional: 2, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 268, independent: 259, independent conditional: 0, independent unconditional: 259, dependent: 9, dependent conditional: 2, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 183, independent: 175, independent conditional: 0, independent unconditional: 175, dependent: 8, dependent conditional: 2, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 183, independent: 173, independent conditional: 0, independent unconditional: 173, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 10, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 8, dependent conditional: 2, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 10, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 8, dependent conditional: 2, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 178, independent: 52, independent conditional: 0, independent unconditional: 52, dependent: 126, dependent conditional: 27, dependent unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 268, independent: 84, independent conditional: 0, independent unconditional: 84, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 183, unknown conditional: 2, unknown unconditional: 181] , Statistics on independence cache: Total cache size (in pairs): 183, Positive cache size: 175, Positive conditional cache size: 0, Positive unconditional cache size: 175, Negative cache size: 8, Negative conditional cache size: 2, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 86, Maximal queried relation: 2, Independence queries for same thread: 31 - CounterExampleResult [Line: 753]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L772] 0 _N = __VERIFIER_nondet_int() [L773] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L773] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L774] 0 pthread_t t1, t2; [L775] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [\at(arg, Pre)={0:0}, _N=0, limit=0, t1=0] [L757] COND FALSE 1 !(__VERIFIER_nondet_int()) [L760] 1 limit = _N + 1 VAL [\at(arg, Pre)={0:0}, _N=0, arg={0:0}, limit=1] [L762] 1 return 0; [L776] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [\at(arg, Pre)={0:0}, \result={0:0}, _N=0, arg={0:0}, limit=1, t1=0, t2=1] [L765] 2 int i, bound; [L766] 2 bound = limit [L767] 2 i = 0 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, _N=0, arg={0:0}, arg={0:0}, bound=1, i=0, limit=1] [L777] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\at(arg, Pre)={0:0}, \result={0:0}, _N=0, arg={0:0}, limit=1, t1=0, t2=1] [L767] COND TRUE 2 i < bound [L767] 2 i++ VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, _N=0, arg={0:0}, arg={0:0}, bound=1, i=1, limit=1] [L767] COND FALSE 2 !(i < bound) [L768] CALL 2 __VERIFIER_assert(i <= _N) [L753] COND TRUE 2 !expression VAL [\at(arg, Pre)={0:0}, \at(expression, Pre)=0, \result={0:0}, _N=0, arg={0:0}, expression=0, limit=1] [L753] 2 reach_error() VAL [\at(arg, Pre)={0:0}, \at(expression, Pre)=0, \result={0:0}, _N=0, arg={0:0}, expression=0, limit=1] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: f2Thread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 37 locations, 42 edges, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.4s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 141 SizeOfPredicates, 6 NumberOfNonLiveVariables, 89 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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: SuccessfulCommutativityProofs: 0, ConComChecker Statistics: CheckTime [ms]: 17, ConditionCalculationTime [ms]: 0, ConditionCalculations: 0, QuantifiedConditions: 0, TraceChecks: 0, UnknownTraceChecks: 0, UnsatisfiedConditions: 0, ImperfectProofs: 0 RESULT: Ultimate proved your program to be incorrect! [2025-04-14 17:02:01,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...