/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/unwind3-1.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-dev-4cc0a57-m [2025-04-14 17:02:59,953 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 17:03:00,009 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 17:03:00,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 17:03:00,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 17:03:00,034 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 17:03:00,035 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 17:03:00,035 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 17:03:00,035 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 17:03:00,035 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 17:03:00,036 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 17:03:00,036 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 17:03:00,036 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 17:03:00,036 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 17:03:00,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 17:03:00,037 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 17:03:00,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 17:03:00,037 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 17:03:00,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 17:03:00,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 17:03:00,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 17:03:00,037 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 17:03:00,037 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 17:03:00,037 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 17:03:00,037 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 17:03:00,037 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 17:03:00,037 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 17:03:00,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 17:03:00,037 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 17:03:00,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 17:03:00,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 17:03:00,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 17:03:00,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 17:03:00,037 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 17:03:00,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 17:03:00,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 17:03:00,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 17:03:00,038 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 17:03:00,038 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 17:03:00,038 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-14 17:03:00,038 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 17:03:00,038 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 17:03:00,038 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-14 17:03:00,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 17:03:00,038 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-14 17:03:00,038 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-14 17:03:00,038 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-14 17:03:00,038 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 17:03:00,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 17:03:00,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 17:03:00,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 17:03:00,260 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 17:03:00,262 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 17:03:00,263 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-theta/unwind3-1.i [2025-04-14 17:03:01,461 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/874b78d79/0461f79a4e7f4f91ab245de2353bdf97/FLAGd427efd61 [2025-04-14 17:03:01,695 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 17:03:01,696 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-theta/unwind3-1.i [2025-04-14 17:03:01,704 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/874b78d79/0461f79a4e7f4f91ab245de2353bdf97/FLAGd427efd61 [2025-04-14 17:03:02,461 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/874b78d79/0461f79a4e7f4f91ab245de2353bdf97 [2025-04-14 17:03:02,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 17:03:02,464 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 17:03:02,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 17:03:02,465 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 17:03:02,468 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 17:03:02,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 05:03:02" (1/1) ... [2025-04-14 17:03:02,469 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2511232c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:03:02, skipping insertion in model container [2025-04-14 17:03:02,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 05:03:02" (1/1) ... [2025-04-14 17:03:02,486 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 17:03:02,686 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/unwind3-1.i[33026,33039] [2025-04-14 17:03:02,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 17:03:02,701 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 17:03:02,749 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/unwind3-1.i[33026,33039] [2025-04-14 17:03:02,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 17:03:02,778 INFO L204 MainTranslator]: Completed translation [2025-04-14 17:03:02,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:03:02 WrapperNode [2025-04-14 17:03:02,780 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 17:03:02,781 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 17:03:02,781 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 17:03:02,781 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 17:03:02,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:03:02" (1/1) ... [2025-04-14 17:03:02,798 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:03:02" (1/1) ... [2025-04-14 17:03:02,813 INFO L138 Inliner]: procedures = 169, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2025-04-14 17:03:02,813 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 17:03:02,814 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 17:03:02,814 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 17:03:02,814 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 17:03:02,818 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:03:02" (1/1) ... [2025-04-14 17:03:02,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:03:02" (1/1) ... [2025-04-14 17:03:02,823 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:03:02" (1/1) ... [2025-04-14 17:03:02,823 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:03:02" (1/1) ... [2025-04-14 17:03:02,830 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:03:02" (1/1) ... [2025-04-14 17:03:02,831 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:03:02" (1/1) ... [2025-04-14 17:03:02,831 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:03:02" (1/1) ... [2025-04-14 17:03:02,833 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:03:02" (1/1) ... [2025-04-14 17:03:02,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 17:03:02,837 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 17:03:02,837 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 17:03:02,837 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 17:03:02,837 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:03:02" (1/1) ... [2025-04-14 17:03:02,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 17:03:02,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 17:03:02,859 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 17:03:02,863 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 17:03:02,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 17:03:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-04-14 17:03:02,878 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-04-14 17:03:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-04-14 17:03:02,878 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-04-14 17:03:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-14 17:03:02,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 17:03:02,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 17:03:02,879 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 17:03:02,965 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 17:03:02,966 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 17:03:03,046 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 17:03:03,046 INFO L307 CfgBuilder]: Performing block encoding [2025-04-14 17:03:03,106 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 17:03:03,106 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 17:03:03,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 05:03:03 BoogieIcfgContainer [2025-04-14 17:03:03,107 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 17:03:03,109 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 17:03:03,109 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 17:03:03,112 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 17:03:03,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 05:03:02" (1/3) ... [2025-04-14 17:03:03,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487fbed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 05:03:03, skipping insertion in model container [2025-04-14 17:03:03,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 05:03:02" (2/3) ... [2025-04-14 17:03:03,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487fbed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 05:03:03, skipping insertion in model container [2025-04-14 17:03:03,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 05:03:03" (3/3) ... [2025-04-14 17:03:03,114 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind3-1.i [2025-04-14 17:03:03,123 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 17:03:03,126 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind3-1.i that has 3 procedures, 20 locations, 20 edges, 1 initial locations, 2 loop locations, and 1 error locations. [2025-04-14 17:03:03,126 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 17:03:03,163 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-14 17:03:03,191 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 17:03:03,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-14 17:03:03,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 17:03:03,194 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 17:03:03,195 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 17:03:03,247 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-14 17:03:03,258 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == f2Thread1of1ForFork1 ======== [2025-04-14 17:03:03,266 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;@56918761, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 17:03:03,266 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-04-14 17:03:03,391 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-14 17:03:03,391 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-14 17:03:03,391 INFO L139 ounterexampleChecker]: Examining path program with hash 1809939803, occurence #1 [2025-04-14 17:03:03,391 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-14 17:03:03,391 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-14 17:03:03,395 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 17:03:03,395 INFO L85 PathProgramCache]: Analyzing trace with hash -340267956, now seen corresponding path program 1 times [2025-04-14 17:03:03,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 17:03:03,401 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702495233] [2025-04-14 17:03:03,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 17:03:03,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 17:03:03,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-14 17:03:03,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-14 17:03:03,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 17:03:03,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 17:03:03,742 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 17:03:03,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 17:03:03,744 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702495233] [2025-04-14 17:03:03,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702495233] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 17:03:03,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 17:03:03,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-14 17:03:03,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629773525] [2025-04-14 17:03:03,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 17:03:03,749 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-14 17:03:03,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 17:03:03,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-14 17:03:03,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-14 17:03:03,764 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-14 17:03:03,765 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-14 17:03:03,766 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 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 17:03:03,766 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-14 17:03:03,840 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 17:03:03,841 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 17:03:03,841 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-14 17:03:03,841 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-14 17:03:03,841 INFO L139 ounterexampleChecker]: Examining path program with hash 1809939803, occurence #2 [2025-04-14 17:03:03,841 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-14 17:03:03,841 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 2 [2025-04-14 17:03:03,842 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-14 17:03:03,842 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-04-14 17:03:03,842 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-14 17:03:03,842 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2025-04-14 17:03:03,842 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-14 17:03:03,842 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 10 [2025-04-14 17:03:03,842 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-14 17:03:03,842 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-14 17:03:03,842 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-14 17:03:03,842 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 17:03:03,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1958402698, now seen corresponding path program 1 times [2025-04-14 17:03:03,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 17:03:03,843 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406270679] [2025-04-14 17:03:03,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 17:03:03,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 17:03:03,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-14 17:03:03,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-14 17:03:03,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 17:03:03,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 17:03:04,002 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 17:03:04,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 17:03:04,002 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406270679] [2025-04-14 17:03:04,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406270679] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-14 17:03:04,002 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924820358] [2025-04-14 17:03:04,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 17:03:04,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-14 17:03:04,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 17:03:04,006 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 17:03:04,007 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 17:03:04,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-04-14 17:03:04,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-04-14 17:03:04,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 17:03:04,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 17:03:04,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-04-14 17:03:04,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-14 17:03:04,151 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 17:03:04,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-14 17:03:04,218 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 17:03:04,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924820358] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-14 17:03:04,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-14 17:03:04,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 12 [2025-04-14 17:03:04,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938450165] [2025-04-14 17:03:04,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-14 17:03:04,219 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-04-14 17:03:04,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 17:03:04,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-04-14 17:03:04,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-04-14 17:03:04,220 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-14 17:03:04,220 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-14 17:03:04,221 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 17:03:04,221 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-14 17:03:04,221 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-14 17:03:04,363 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-14 17:03:04,363 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-14 17:03:04,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-14 17:03:04,567 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 17:03:04,567 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-14 17:03:04,567 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-14 17:03:04,567 INFO L139 ounterexampleChecker]: Examining path program with hash 1809939803, occurence #3 [2025-04-14 17:03:04,567 INFO L145 ounterexampleChecker]: Trying to synthesize and prove commutativity condition. [2025-04-14 17:03:04,567 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 2 [2025-04-14 17:03:04,567 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-14 17:03:04,567 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 4 [2025-04-14 17:03:04,568 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-14 17:03:04,568 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 8 [2025-04-14 17:03:04,568 INFO L209 ounterexampleChecker]: No commutativity condition found. [2025-04-14 17:03:04,568 INFO L166 ounterexampleChecker]: Performing commutativity condition check at non-minimality point 10 [2025-04-14 17:03:04,568 WARN L190 ounterexampleChecker]: Statements were already independent. [2025-04-14 17:03:04,568 WARN L214 ounterexampleChecker]: Failed to synthesize and prove commutativity condition. [2025-04-14 17:03:04,568 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-14 17:03:04,568 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 17:03:04,568 INFO L85 PathProgramCache]: Analyzing trace with hash -580972148, now seen corresponding path program 2 times [2025-04-14 17:03:04,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 17:03:04,568 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221779308] [2025-04-14 17:03:04,568 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-14 17:03:04,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 17:03:04,576 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-04-14 17:03:04,600 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 17:03:04,600 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-04-14 17:03:04,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 17:03:04,600 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-14 17:03:04,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-04-14 17:03:04,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-04-14 17:03:04,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 17:03:04,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 17:03:04,630 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-14 17:03:04,630 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-14 17:03:04,631 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-04-14 17:03:04,632 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-14 17:03:04,636 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1] [2025-04-14 17:03:04,639 INFO L320 ceAbstractionStarter]: Result for error location f2Thread1of1ForFork1 was UNSAFE (1/2) [2025-04-14 17:03:04,673 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 17:03:04,673 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 17:03:04,681 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 17:03:04,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 05:03:04 BasicIcfg [2025-04-14 17:03:04,682 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 17:03:04,682 INFO L158 Benchmark]: Toolchain (without parser) took 2217.91ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 98.2MB in the end (delta: 535.6kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 17:03:04,683 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 155.2MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 17:03:04,683 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.22ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 75.2MB in the end (delta: 23.5MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2025-04-14 17:03:04,683 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.67ms. Allocated memory is still 142.6MB. Free memory was 75.2MB in the beginning and 73.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 17:03:04,683 INFO L158 Benchmark]: Boogie Preprocessor took 22.30ms. Allocated memory is still 142.6MB. Free memory was 73.3MB in the beginning and 72.4MB in the end (delta: 948.0kB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 17:03:04,683 INFO L158 Benchmark]: IcfgBuilder took 270.12ms. Allocated memory is still 142.6MB. Free memory was 72.4MB in the beginning and 53.3MB in the end (delta: 19.1MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2025-04-14 17:03:04,683 INFO L158 Benchmark]: TraceAbstraction took 1573.06ms. Allocated memory is still 142.6MB. Free memory was 53.3MB in the beginning and 98.2MB in the end (delta: -44.9MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 17:03:04,684 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 155.2MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 315.22ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 75.2MB in the end (delta: 23.5MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.67ms. Allocated memory is still 142.6MB. Free memory was 75.2MB in the beginning and 73.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Preprocessor took 22.30ms. Allocated memory is still 142.6MB. Free memory was 73.3MB in the beginning and 72.4MB in the end (delta: 948.0kB). There was no memory consumed. Max. memory is 8.0GB. * IcfgBuilder took 270.12ms. Allocated memory is still 142.6MB. Free memory was 72.4MB in the beginning and 53.3MB in the end (delta: 19.1MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1573.06ms. Allocated memory is still 142.6MB. Free memory was 53.3MB in the beginning and 98.2MB in the end (delta: -44.9MB). There was no memory consumed. 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: 118, independent: 99, independent conditional: 21, independent unconditional: 78, dependent: 19, dependent conditional: 16, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 102, independent: 99, independent conditional: 21, independent unconditional: 78, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 102, independent: 99, independent conditional: 21, independent unconditional: 78, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 102, independent: 99, independent conditional: 21, independent unconditional: 78, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 102, independent: 99, independent conditional: 0, independent unconditional: 99, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 102, independent: 99, independent conditional: 0, independent unconditional: 99, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 81, independent: 78, independent conditional: 0, independent unconditional: 78, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 81, independent: 75, independent conditional: 0, independent unconditional: 75, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 6, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 6, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 97, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 102, independent: 21, independent conditional: 0, independent unconditional: 21, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 81, unknown conditional: 0, unknown unconditional: 81] , Statistics on independence cache: Total cache size (in pairs): 81, Positive cache size: 78, Positive conditional cache size: 0, Positive unconditional cache size: 78, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 21, Maximal queried relation: 0, Independence queries for same thread: 16, Persistent sets #1 benchmarks: Persistent set computation time: 0.1s, Number of persistent set computation: 17, Number of trivial persistent sets: 16, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 81, independent: 78, independent conditional: 0, independent unconditional: 78, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 118, independent: 99, independent conditional: 21, independent unconditional: 78, dependent: 19, dependent conditional: 16, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 102, independent: 99, independent conditional: 21, independent unconditional: 78, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 102, independent: 99, independent conditional: 21, independent unconditional: 78, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 102, independent: 99, independent conditional: 21, independent unconditional: 78, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 102, independent: 99, independent conditional: 0, independent unconditional: 99, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 102, independent: 99, independent conditional: 0, independent unconditional: 99, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 81, independent: 78, independent conditional: 0, independent unconditional: 78, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 81, independent: 75, independent conditional: 0, independent unconditional: 75, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 6, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 6, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 97, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 102, independent: 21, independent conditional: 0, independent unconditional: 21, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 81, unknown conditional: 0, unknown unconditional: 81] , Statistics on independence cache: Total cache size (in pairs): 81, Positive cache size: 78, Positive conditional cache size: 0, Positive unconditional cache size: 78, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 21, Maximal queried relation: 0, Independence queries for same thread: 16 - 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; [L770] 0 _N = 1 [L771] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff / 2) [L750] COND FALSE 0 !(!cond) [L771] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff / 2) [L772] 0 limit = _N VAL [_N=1, limit=1] [L773] 0 int i = 0; VAL [_N=1, i=0, limit=1] [L773] COND TRUE 0 i < _N [L774] 0 pthread_t t; [L775] FCALL, FORK 0 pthread_create(&t, 0, f1, 0) VAL [\at(arg, Pre)={0:0}, _N=1, i=0, limit=1, t=-1] [L757] 1 int l; [L758] 1 l = limit VAL [\at(arg, Pre)={0:0}, _N=1, arg={0:0}, l=1, limit=1] [L759] 1 limit = l + 1 VAL [\at(arg, Pre)={0:0}, _N=1, arg={0:0}, l=1, limit=2] [L760] 1 return 0; [L773] 0 ++i VAL [\at(arg, Pre)={0:0}, \result={0:0}, _N=1, arg={0:0}, i=1, l=1, limit=2] [L773] COND FALSE 0 !(i < _N) [L777] 0 pthread_t t; [L778] FCALL, FORK 0 pthread_create(&t, 0, f2, 0) VAL [\at(arg, Pre)={0:0}, \result={0:0}, _N=1, arg={0:0}, l=1, limit=2, t=0] [L763] 2 int i, bound; [L764] 2 bound = limit [L765] 2 i = 0 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=0, l=1, limit=2] [L779] 0 return 0; [L765] COND TRUE 2 i < bound [L765] 2 i++ VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=1, l=1, limit=2] [L765] COND TRUE 2 i < bound [L765] 2 i++ VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=2, l=1, limit=2] [L765] COND FALSE 2 !(i < bound) [L766] CALL 2 __VERIFIER_assert(i != 2 * _N) [L753] COND TRUE 2 !expression VAL [\at(arg, Pre)={0:0}, \at(expression, Pre)=0, \result={0:0}, _N=1, arg={0:0}, expression=0, l=1, limit=2] [L753] 2 reach_error() VAL [\at(arg, Pre)={0:0}, \at(expression, Pre)=0, \result={0:0}, _N=1, arg={0:0}, expression=0, l=1, limit=2] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: f2Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 33 locations, 35 edges, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.3s, 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: 13, 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, 0.5s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 213 SizeOfPredicates, 6 NumberOfNonLiveVariables, 95 ConjunctsInSsa, 8 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]: 0, ConditionCalculationTime [ms]: 0, ConditionCalculations: 4, QuantifiedConditions: 0, TraceChecks: 0, UnknownTraceChecks: 0, UnsatisfiedConditions: 0, ImperfectProofs: 0 RESULT: Ultimate proved your program to be incorrect! [2025-04-14 17:03:04,699 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...