/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-wmm/safe025_power.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-dev-4cc0a57-m [2025-04-14 14:48:29,816 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-14 14:48:29,862 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 14:48:29,866 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-14 14:48:29,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-14 14:48:29,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-14 14:48:29,886 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-14 14:48:29,887 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-14 14:48:29,887 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-14 14:48:29,887 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-14 14:48:29,887 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-14 14:48:29,887 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-14 14:48:29,887 INFO L153 SettingsManager]: * Use SBE=true [2025-04-14 14:48:29,887 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-14 14:48:29,887 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-14 14:48:29,887 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-14 14:48:29,887 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-14 14:48:29,887 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-14 14:48:29,888 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-14 14:48:29,888 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-14 14:48:29,888 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-14 14:48:29,888 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-14 14:48:29,888 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-14 14:48:29,888 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-14 14:48:29,888 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-14 14:48:29,888 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-14 14:48:29,888 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-14 14:48:29,888 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 14:48:29,888 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 14:48:29,888 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 14:48:29,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 14:48:29,894 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-14 14:48:29,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-14 14:48:29,894 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-14 14:48:29,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-14 14:48:29,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 14:48:29,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-14 14:48:29,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-14 14:48:29,894 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-14 14:48:29,894 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-14 14:48:29,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-14 14:48:29,894 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-14 14:48:29,894 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-14 14:48:29,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-14 14:48:29,894 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-14 14:48:29,894 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-14 14:48:29,894 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-14 14:48:29,894 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 14:48:30,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-14 14:48:30,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-14 14:48:30,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-14 14:48:30,117 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-14 14:48:30,118 INFO L274 PluginConnector]: CDTParser initialized [2025-04-14 14:48:30,118 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_power.i [2025-04-14 14:48:31,430 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8049c5e95/4f6a54adf46b4375a02fa1826f852b83/FLAG0a3ab1ddd [2025-04-14 14:48:31,722 INFO L389 CDTParser]: Found 1 translation units. [2025-04-14 14:48:31,722 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_power.i [2025-04-14 14:48:31,738 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8049c5e95/4f6a54adf46b4375a02fa1826f852b83/FLAG0a3ab1ddd [2025-04-14 14:48:32,481 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8049c5e95/4f6a54adf46b4375a02fa1826f852b83 [2025-04-14 14:48:32,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-14 14:48:32,484 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-14 14:48:32,487 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-14 14:48:32,488 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-14 14:48:32,491 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-14 14:48:32,492 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 02:48:32" (1/1) ... [2025-04-14 14:48:32,493 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@696ca9a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:48:32, skipping insertion in model container [2025-04-14 14:48:32,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 02:48:32" (1/1) ... [2025-04-14 14:48:32,526 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-14 14:48:32,689 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-wmm/safe025_power.i[990,1003] [2025-04-14 14:48:32,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 14:48:32,855 INFO L200 MainTranslator]: Completed pre-run [2025-04-14 14:48:32,874 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-wmm/safe025_power.i[990,1003] [2025-04-14 14:48:32,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-14 14:48:32,960 INFO L204 MainTranslator]: Completed translation [2025-04-14 14:48:32,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:48:32 WrapperNode [2025-04-14 14:48:32,961 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-14 14:48:32,961 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-14 14:48:32,962 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-14 14:48:32,962 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-14 14:48:32,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:48:32" (1/1) ... [2025-04-14 14:48:32,981 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:48:32" (1/1) ... [2025-04-14 14:48:33,010 INFO L138 Inliner]: procedures = 175, calls = 74, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 219 [2025-04-14 14:48:33,010 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-14 14:48:33,011 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-14 14:48:33,011 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-14 14:48:33,011 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-14 14:48:33,018 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:48:32" (1/1) ... [2025-04-14 14:48:33,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:48:32" (1/1) ... [2025-04-14 14:48:33,022 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:48:32" (1/1) ... [2025-04-14 14:48:33,022 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:48:32" (1/1) ... [2025-04-14 14:48:33,044 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:48:32" (1/1) ... [2025-04-14 14:48:33,046 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:48:32" (1/1) ... [2025-04-14 14:48:33,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:48:32" (1/1) ... [2025-04-14 14:48:33,048 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:48:32" (1/1) ... [2025-04-14 14:48:33,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-14 14:48:33,070 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-04-14 14:48:33,070 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-04-14 14:48:33,070 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-04-14 14:48:33,073 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:48:32" (1/1) ... [2025-04-14 14:48:33,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-14 14:48:33,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 14:48:33,101 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 14:48:33,103 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 14:48:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-04-14 14:48:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-14 14:48:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-14 14:48:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-14 14:48:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-04-14 14:48:33,121 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-04-14 14:48:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-04-14 14:48:33,121 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-04-14 14:48:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-04-14 14:48:33,121 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-04-14 14:48:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-14 14:48:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-14 14:48:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-14 14:48:33,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-14 14:48:33,123 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 14:48:33,244 INFO L256 CfgBuilder]: Building ICFG [2025-04-14 14:48:33,245 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-14 14:48:33,670 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-14 14:48:33,670 INFO L307 CfgBuilder]: Performing block encoding [2025-04-14 14:48:34,005 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-14 14:48:34,005 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-14 14:48:34,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 02:48:34 BoogieIcfgContainer [2025-04-14 14:48:34,005 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-04-14 14:48:34,007 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-14 14:48:34,007 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-14 14:48:34,010 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-14 14:48:34,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 02:48:32" (1/3) ... [2025-04-14 14:48:34,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33419513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 02:48:34, skipping insertion in model container [2025-04-14 14:48:34,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 02:48:32" (2/3) ... [2025-04-14 14:48:34,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33419513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 02:48:34, skipping insertion in model container [2025-04-14 14:48:34,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.04 02:48:34" (3/3) ... [2025-04-14 14:48:34,011 INFO L128 eAbstractionObserver]: Analyzing ICFG safe025_power.i [2025-04-14 14:48:34,022 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-14 14:48:34,023 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe025_power.i that has 4 procedures, 41 locations, 38 edges, 1 initial locations, 0 loop locations, and 3 error locations. [2025-04-14 14:48:34,024 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-14 14:48:34,081 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-14 14:48:34,112 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 14:48:34,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-14 14:48:34,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-14 14:48:34,115 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 14:48:34,117 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 14:48:34,196 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-14 14:48:34,208 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == P1Thread1of1ForFork0 ======== [2025-04-14 14:48:34,216 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;@7fe2f245, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-14 14:48:34,217 INFO L341 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-04-14 14:48:37,566 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err1ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-14 14:48:37,567 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-14 14:48:37,567 INFO L139 ounterexampleChecker]: Examining path program with hash 677494148, occurence #1 [2025-04-14 14:48:37,567 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-14 14:48:37,567 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-14 14:48:37,570 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 14:48:37,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1906381106, now seen corresponding path program 1 times [2025-04-14 14:48:37,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 14:48:37,577 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083547821] [2025-04-14 14:48:37,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 14:48:37,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 14:48:37,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-14 14:48:37,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-14 14:48:37,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 14:48:37,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-14 14:48:37,961 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 14:48:37,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-14 14:48:37,962 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083547821] [2025-04-14 14:48:37,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083547821] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-14 14:48:37,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-14 14:48:37,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-14 14:48:37,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960952449] [2025-04-14 14:48:37,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-14 14:48:37,968 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-14 14:48:37,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-14 14:48:37,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-14 14:48:37,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-14 14:48:37,982 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-14 14:48:37,983 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-14 14:48:37,983 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-14 14:48:37,984 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-14 14:48:39,912 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-14 14:48:39,912 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-14 14:48:39,913 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err1ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-14 14:48:39,913 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-14 14:48:39,913 INFO L139 ounterexampleChecker]: Examining path program with hash -1943146724, occurence #1 [2025-04-14 14:48:39,913 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-14 14:48:39,913 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-14 14:48:39,913 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-14 14:48:39,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1031727039, now seen corresponding path program 1 times [2025-04-14 14:48:39,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-14 14:48:39,913 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132491784] [2025-04-14 14:48:39,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-14 14:48:39,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-14 14:48:39,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-14 14:48:39,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-14 14:48:39,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 14:48:39,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 14:48:39,928 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-14 14:48:39,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-14 14:48:39,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-14 14:48:39,943 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-14 14:48:39,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-14 14:48:39,972 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-14 14:48:39,972 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-14 14:48:39,973 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2025-04-14 14:48:39,974 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2025-04-14 14:48:39,975 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-14 14:48:39,982 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-04-14 14:48:39,983 INFO L320 ceAbstractionStarter]: Result for error location P1Thread1of1ForFork0 was UNSAFE,UNKNOWN (1/2) [2025-04-14 14:48:40,023 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-14 14:48:40,023 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-14 14:48:40,033 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 14:48:40,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 02:48:40 BasicIcfg [2025-04-14 14:48:40,034 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-14 14:48:40,035 INFO L158 Benchmark]: Toolchain (without parser) took 7550.21ms. Allocated memory was 142.6MB in the beginning and 599.8MB in the end (delta: 457.2MB). Free memory was 98.7MB in the beginning and 313.5MB in the end (delta: -214.8MB). Peak memory consumption was 242.8MB. Max. memory is 8.0GB. [2025-04-14 14:48:40,035 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 83.4MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-14 14:48:40,036 INFO L158 Benchmark]: CACSL2BoogieTranslator took 473.57ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 68.9MB in the end (delta: 29.8MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2025-04-14 14:48:40,038 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.79ms. Allocated memory is still 142.6MB. Free memory was 68.9MB in the beginning and 65.4MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 14:48:40,038 INFO L158 Benchmark]: Boogie Preprocessor took 58.29ms. Allocated memory is still 142.6MB. Free memory was 65.4MB in the beginning and 63.1MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-14 14:48:40,038 INFO L158 Benchmark]: IcfgBuilder took 935.81ms. Allocated memory is still 142.6MB. Free memory was 63.1MB in the beginning and 76.3MB in the end (delta: -13.2MB). Peak memory consumption was 45.3MB. Max. memory is 8.0GB. [2025-04-14 14:48:40,038 INFO L158 Benchmark]: TraceAbstraction took 6027.10ms. Allocated memory was 142.6MB in the beginning and 599.8MB in the end (delta: 457.2MB). Free memory was 75.8MB in the beginning and 313.5MB in the end (delta: -237.7MB). Peak memory consumption was 220.6MB. Max. memory is 8.0GB. [2025-04-14 14:48:40,041 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 155.2MB. Free memory is still 83.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 473.57ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 68.9MB in the end (delta: 29.8MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.79ms. Allocated memory is still 142.6MB. Free memory was 68.9MB in the beginning and 65.4MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 58.29ms. Allocated memory is still 142.6MB. Free memory was 65.4MB in the beginning and 63.1MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * IcfgBuilder took 935.81ms. Allocated memory is still 142.6MB. Free memory was 63.1MB in the beginning and 76.3MB in the end (delta: -13.2MB). Peak memory consumption was 45.3MB. Max. memory is 8.0GB. * TraceAbstraction took 6027.10ms. Allocated memory was 142.6MB in the beginning and 599.8MB in the end (delta: 457.2MB). Free memory was 75.8MB in the beginning and 313.5MB in the end (delta: -237.7MB). Peak memory consumption was 220.6MB. 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: 259, independent: 250, independent conditional: 24, independent unconditional: 226, dependent: 9, dependent conditional: 2, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 257, independent: 250, independent conditional: 24, independent unconditional: 226, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 257, independent: 250, independent conditional: 24, independent unconditional: 226, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 257, independent: 250, independent conditional: 24, independent unconditional: 226, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 257, independent: 250, independent conditional: 0, independent unconditional: 250, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 257, independent: 250, independent conditional: 0, independent unconditional: 250, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 233, independent: 226, independent conditional: 0, independent unconditional: 226, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 233, independent: 224, independent conditional: 0, independent unconditional: 224, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 9, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 9, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5206, independent: 59, independent conditional: 0, independent unconditional: 59, dependent: 5147, dependent conditional: 0, dependent unconditional: 5147, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 257, independent: 24, independent conditional: 0, independent unconditional: 24, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 233, unknown conditional: 0, unknown unconditional: 233] , Statistics on independence cache: Total cache size (in pairs): 233, Positive cache size: 226, Positive conditional cache size: 0, Positive unconditional cache size: 226, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 24, Maximal queried relation: 0, Independence queries for same thread: 2, Persistent sets #1 benchmarks: Persistent set computation time: 5.2s, Number of persistent set computation: 7, Number of trivial persistent sets: 4, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 233, independent: 226, independent conditional: 0, independent unconditional: 226, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 259, independent: 250, independent conditional: 24, independent unconditional: 226, dependent: 9, dependent conditional: 2, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 257, independent: 250, independent conditional: 24, independent unconditional: 226, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 257, independent: 250, independent conditional: 24, independent unconditional: 226, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 257, independent: 250, independent conditional: 24, independent unconditional: 226, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 257, independent: 250, independent conditional: 0, independent unconditional: 250, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 257, independent: 250, independent conditional: 0, independent unconditional: 250, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 233, independent: 226, independent conditional: 0, independent unconditional: 226, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 233, independent: 224, independent conditional: 0, independent unconditional: 224, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 9, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 9, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5206, independent: 59, independent conditional: 0, independent unconditional: 59, dependent: 5147, dependent conditional: 0, dependent unconditional: 5147, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 257, independent: 24, independent conditional: 0, independent unconditional: 24, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 233, unknown conditional: 0, unknown unconditional: 233] , Statistics on independence cache: Total cache size (in pairs): 233, Positive cache size: 226, Positive conditional cache size: 0, Positive unconditional cache size: 226, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 24, Maximal queried relation: 0, Independence queries for same thread: 2 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p0_EAX = 0; [L714] 0 int __unbuffered_p2_EAX = 0; [L715] 0 _Bool __unbuffered_p2_EAX$flush_delayed; [L716] 0 int __unbuffered_p2_EAX$mem_tmp; [L717] 0 _Bool __unbuffered_p2_EAX$r_buff0_thd0; [L718] 0 _Bool __unbuffered_p2_EAX$r_buff0_thd1; [L719] 0 _Bool __unbuffered_p2_EAX$r_buff0_thd2; [L720] 0 _Bool __unbuffered_p2_EAX$r_buff0_thd3; [L721] 0 _Bool __unbuffered_p2_EAX$r_buff1_thd0; [L722] 0 _Bool __unbuffered_p2_EAX$r_buff1_thd1; [L723] 0 _Bool __unbuffered_p2_EAX$r_buff1_thd2; [L724] 0 _Bool __unbuffered_p2_EAX$r_buff1_thd3; [L725] 0 _Bool __unbuffered_p2_EAX$read_delayed; [L726] 0 int *__unbuffered_p2_EAX$read_delayed_var; [L727] 0 int __unbuffered_p2_EAX$w_buff0; [L728] 0 _Bool __unbuffered_p2_EAX$w_buff0_used; [L729] 0 int __unbuffered_p2_EAX$w_buff1; [L730] 0 _Bool __unbuffered_p2_EAX$w_buff1_used; [L732] 0 int __unbuffered_p2_EBX = 0; [L733] 0 _Bool main$tmp_guard0; [L734] 0 _Bool main$tmp_guard1; [L736] 0 int x = 0; [L737] 0 _Bool x$flush_delayed; [L738] 0 int x$mem_tmp; [L739] 0 _Bool x$r_buff0_thd0; [L740] 0 _Bool x$r_buff0_thd1; [L741] 0 _Bool x$r_buff0_thd2; [L742] 0 _Bool x$r_buff0_thd3; [L743] 0 _Bool x$r_buff1_thd0; [L744] 0 _Bool x$r_buff1_thd1; [L745] 0 _Bool x$r_buff1_thd2; [L746] 0 _Bool x$r_buff1_thd3; [L747] 0 _Bool x$read_delayed; [L748] 0 int *x$read_delayed_var; [L749] 0 int x$w_buff0; [L750] 0 _Bool x$w_buff0_used; [L751] 0 int x$w_buff1; [L752] 0 _Bool x$w_buff1_used; [L754] 0 int y = 0; [L755] 0 _Bool weak$$choice0; [L756] 0 _Bool weak$$choice1; [L757] 0 _Bool weak$$choice2; [L873] 0 pthread_t t2369; [L874] FCALL, FORK 0 pthread_create(&t2369, ((void *)0), P0, ((void *)0)) VAL [\at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX$flush_delayed=0, __unbuffered_p2_EAX$mem_tmp=0, __unbuffered_p2_EAX$r_buff0_thd0=0, __unbuffered_p2_EAX$r_buff0_thd1=0, __unbuffered_p2_EAX$r_buff0_thd2=0, __unbuffered_p2_EAX$r_buff0_thd3=0, __unbuffered_p2_EAX$r_buff1_thd0=0, __unbuffered_p2_EAX$r_buff1_thd1=0, __unbuffered_p2_EAX$r_buff1_thd2=0, __unbuffered_p2_EAX$r_buff1_thd3=0, __unbuffered_p2_EAX$read_delayed=0, __unbuffered_p2_EAX$read_delayed_var={0:0}, __unbuffered_p2_EAX$w_buff0=0, __unbuffered_p2_EAX$w_buff0_used=0, __unbuffered_p2_EAX$w_buff1=0, __unbuffered_p2_EAX$w_buff1_used=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t2369=-2, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x={3:0}, y=0] [L875] 0 pthread_t t2370; [L876] FCALL, FORK 0 pthread_create(&t2370, ((void *)0), P1, ((void *)0)) VAL [\at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX$flush_delayed=0, __unbuffered_p2_EAX$mem_tmp=0, __unbuffered_p2_EAX$r_buff0_thd0=0, __unbuffered_p2_EAX$r_buff0_thd1=0, __unbuffered_p2_EAX$r_buff0_thd2=0, __unbuffered_p2_EAX$r_buff0_thd3=0, __unbuffered_p2_EAX$r_buff1_thd0=0, __unbuffered_p2_EAX$r_buff1_thd1=0, __unbuffered_p2_EAX$r_buff1_thd2=0, __unbuffered_p2_EAX$r_buff1_thd3=0, __unbuffered_p2_EAX$read_delayed=0, __unbuffered_p2_EAX$read_delayed_var={0:0}, __unbuffered_p2_EAX$w_buff0=0, __unbuffered_p2_EAX$w_buff0_used=0, __unbuffered_p2_EAX$w_buff1=0, __unbuffered_p2_EAX$w_buff1_used=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t2369=-2, t2370=-1, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x={3:0}, y=0] [L791] 2 x$w_buff1 = x$w_buff0 [L792] 2 x$w_buff0 = 1 [L793] 2 x$w_buff1_used = x$w_buff0_used [L794] 2 x$w_buff0_used = (_Bool)1 [L795] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L19] COND FALSE 2 !(!expression) [L795] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L796] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L797] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L798] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L799] 2 x$r_buff1_thd3 = x$r_buff0_thd3 [L800] 2 x$r_buff0_thd2 = (_Bool)1 VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX$flush_delayed=0, __unbuffered_p2_EAX$mem_tmp=0, __unbuffered_p2_EAX$r_buff0_thd0=0, __unbuffered_p2_EAX$r_buff0_thd1=0, __unbuffered_p2_EAX$r_buff0_thd2=0, __unbuffered_p2_EAX$r_buff0_thd3=0, __unbuffered_p2_EAX$r_buff1_thd0=0, __unbuffered_p2_EAX$r_buff1_thd1=0, __unbuffered_p2_EAX$r_buff1_thd2=0, __unbuffered_p2_EAX$r_buff1_thd3=0, __unbuffered_p2_EAX$read_delayed=0, __unbuffered_p2_EAX$read_delayed_var={0:0}, __unbuffered_p2_EAX$w_buff0=0, __unbuffered_p2_EAX$w_buff0_used=0, __unbuffered_p2_EAX$w_buff1=0, __unbuffered_p2_EAX$w_buff1_used=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x={3:0}, y=0] [L803] 2 x$w_buff1 = x$w_buff0 [L804] 2 x$w_buff0 = 2 [L805] 2 x$w_buff1_used = x$w_buff0_used [L806] 2 x$w_buff0_used = (_Bool)1 [L807] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L19] COND TRUE 2 !expression [L19] 2 reach_error() VAL [\at(arg, Pre)={0:0}, \at(expression, Pre)=0, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX$flush_delayed=0, __unbuffered_p2_EAX$mem_tmp=0, __unbuffered_p2_EAX$r_buff0_thd0=0, __unbuffered_p2_EAX$r_buff0_thd1=0, __unbuffered_p2_EAX$r_buff0_thd2=0, __unbuffered_p2_EAX$r_buff0_thd3=0, __unbuffered_p2_EAX$r_buff1_thd0=0, __unbuffered_p2_EAX$r_buff1_thd1=0, __unbuffered_p2_EAX$r_buff1_thd2=0, __unbuffered_p2_EAX$r_buff1_thd3=0, __unbuffered_p2_EAX$read_delayed=0, __unbuffered_p2_EAX$read_delayed_var={0:0}, __unbuffered_p2_EAX$w_buff0=0, __unbuffered_p2_EAX$w_buff0_used=0, __unbuffered_p2_EAX$w_buff1=0, __unbuffered_p2_EAX$w_buff1_used=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, expression=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=1, x$w_buff1_used=1, x={3:0}, y=0] - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: P1Thread1of1ForFork0 with 1 thread instances CFG has 7 procedures, 68 locations, 65 edges, 8 error locations. Started 1 CEGAR loops. OverallTime: 5.8s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 5.3s, 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: 3, 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, 0.3s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 45 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: SuccessfulCommutativityProofs: 0, ConComChecker Statistics: CheckTime [ms]: 0, 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 14:48:40,054 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...