./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/reorder_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 44c38e66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/pthread/reorder_5.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0517a9ebb69eeca4ecbb6ac063832eb703719698fb2ee670ca348e2c511f9dfd --- Real Ultimate output --- This is Ultimate 0.3.0-?-44c38e6-m [2025-04-24 18:27:47,337 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 18:27:47,394 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-24 18:27:47,400 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 18:27:47,400 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 18:27:47,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 18:27:47,423 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 18:27:47,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 18:27:47,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 18:27:47,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 18:27:47,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 18:27:47,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 18:27:47,425 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 18:27:47,425 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 18:27:47,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 18:27:47,425 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 18:27:47,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-24 18:27:47,425 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 18:27:47,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 18:27:47,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 18:27:47,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 18:27:47,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 18:27:47,426 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 18:27:47,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 18:27:47,426 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 18:27:47,426 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 18:27:47,426 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 18:27:47,426 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 18:27:47,426 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 18:27:47,426 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 18:27:47,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 18:27:47,426 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 18:27:47,426 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 18:27:47,427 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 18:27:47,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 18:27:47,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 18:27:47,427 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 18:27:47,427 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 18:27:47,427 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 18:27:47,427 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 18:27:47,427 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 18:27:47,428 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-24 18:27:47,428 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 18:27:47,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-24 18:27:47,428 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 18:27:47,428 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 18:27:47,428 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 18:27:47,428 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0517a9ebb69eeca4ecbb6ac063832eb703719698fb2ee670ca348e2c511f9dfd [2025-04-24 18:27:47,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 18:27:47,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 18:27:47,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 18:27:47,635 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 18:27:47,635 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 18:27:47,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread/reorder_5.i [2025-04-24 18:27:48,911 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/2db034f45/a50b9956f5064c809594c51741ffd042/FLAGb91a53825 [2025-04-24 18:27:49,178 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 18:27:49,178 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_5.i [2025-04-24 18:27:49,190 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/2db034f45/a50b9956f5064c809594c51741ffd042/FLAGb91a53825 [2025-04-24 18:27:49,960 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/2db034f45/a50b9956f5064c809594c51741ffd042 [2025-04-24 18:27:49,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 18:27:49,963 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 18:27:49,964 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 18:27:49,964 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 18:27:49,967 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 18:27:49,967 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 06:27:49" (1/1) ... [2025-04-24 18:27:49,968 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f2dd7a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:49, skipping insertion in model container [2025-04-24 18:27:49,968 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 06:27:49" (1/1) ... [2025-04-24 18:27:49,991 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 18:27:50,383 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_5.i[59755,59768] [2025-04-24 18:27:50,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 18:27:50,392 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 18:27:50,448 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_5.i[59755,59768] [2025-04-24 18:27:50,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 18:27:50,501 INFO L204 MainTranslator]: Completed translation [2025-04-24 18:27:50,501 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:50 WrapperNode [2025-04-24 18:27:50,501 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 18:27:50,502 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 18:27:50,502 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 18:27:50,502 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 18:27:50,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:50" (1/1) ... [2025-04-24 18:27:50,529 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:50" (1/1) ... [2025-04-24 18:27:50,551 INFO L138 Inliner]: procedures = 371, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 109 [2025-04-24 18:27:50,553 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 18:27:50,553 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 18:27:50,554 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 18:27:50,554 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 18:27:50,558 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:50" (1/1) ... [2025-04-24 18:27:50,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:50" (1/1) ... [2025-04-24 18:27:50,561 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:50" (1/1) ... [2025-04-24 18:27:50,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:50" (1/1) ... [2025-04-24 18:27:50,569 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:50" (1/1) ... [2025-04-24 18:27:50,570 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:50" (1/1) ... [2025-04-24 18:27:50,572 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:50" (1/1) ... [2025-04-24 18:27:50,573 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:50" (1/1) ... [2025-04-24 18:27:50,574 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:50" (1/1) ... [2025-04-24 18:27:50,577 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 18:27:50,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 18:27:50,577 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 18:27:50,577 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 18:27:50,582 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:50" (1/1) ... [2025-04-24 18:27:50,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 18:27:50,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:27:50,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-24 18:27:50,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-24 18:27:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-24 18:27:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-24 18:27:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-24 18:27:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-24 18:27:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-04-24 18:27:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2025-04-24 18:27:50,629 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2025-04-24 18:27:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-24 18:27:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 18:27:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2025-04-24 18:27:50,629 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2025-04-24 18:27:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-24 18:27:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 18:27:50,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 18:27:50,630 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-24 18:27:50,746 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 18:27:50,747 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 18:27:50,908 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 18:27:50,908 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 18:27:51,032 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-24 18:27:51,032 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-24 18:27:51,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 06:27:51 BoogieIcfgContainer [2025-04-24 18:27:51,033 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-24 18:27:51,034 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-24 18:27:51,035 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-24 18:27:51,038 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-24 18:27:51,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 06:27:49" (1/3) ... [2025-04-24 18:27:51,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4145362e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 06:27:51, skipping insertion in model container [2025-04-24 18:27:51,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:50" (2/3) ... [2025-04-24 18:27:51,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4145362e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 06:27:51, skipping insertion in model container [2025-04-24 18:27:51,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 06:27:51" (3/3) ... [2025-04-24 18:27:51,039 INFO L128 eAbstractionObserver]: Analyzing ICFG reorder_5.i [2025-04-24 18:27:51,048 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-24 18:27:51,050 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG reorder_5.i that has 3 procedures, 27 locations, 29 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-04-24 18:27:51,050 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-24 18:27:51,084 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-24 18:27:51,115 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 18:27:51,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-24 18:27:51,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:27:51,117 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-24 18:27:51,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-24 18:27:51,198 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 18:27:51,208 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread1of1ForFork1 ======== [2025-04-24 18:27:51,213 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;@4403bd47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 18:27:51,213 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-04-24 18:27:51,333 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:27:51,335 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:27:51,335 INFO L139 ounterexampleChecker]: Examining path program with hash -562282566, occurence #1 [2025-04-24 18:27:51,335 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:27:51,335 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:27:51,338 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:27:51,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1560060950, now seen corresponding path program 1 times [2025-04-24 18:27:51,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:27:51,345 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737588403] [2025-04-24 18:27:51,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:27:51,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:27:51,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-24 18:27:51,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-24 18:27:51,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:27:51,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:27:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:27:51,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:27:51,636 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737588403] [2025-04-24 18:27:51,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737588403] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:27:51,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:27:51,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-24 18:27:51,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505991879] [2025-04-24 18:27:51,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:27:51,641 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-24 18:27:51,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:27:51,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-24 18:27:51,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-24 18:27:51,656 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:51,657 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:27:51,659 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2025-04-24 18:27:51,659 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:51,863 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 18:27:51,864 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-24 18:27:51,864 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:27:51,864 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:27:51,865 INFO L139 ounterexampleChecker]: Examining path program with hash -888109935, occurence #1 [2025-04-24 18:27:51,865 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:27:51,865 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:27:51,866 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:27:51,866 INFO L85 PathProgramCache]: Analyzing trace with hash -91998239, now seen corresponding path program 1 times [2025-04-24 18:27:51,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:27:51,867 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124026300] [2025-04-24 18:27:51,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:27:51,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:27:51,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-24 18:27:51,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-24 18:27:51,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:27:51,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:27:52,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:27:52,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 18:27:52,070 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124026300] [2025-04-24 18:27:52,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124026300] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:27:52,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:27:52,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-24 18:27:52,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531678910] [2025-04-24 18:27:52,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:27:52,071 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-24 18:27:52,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 18:27:52,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-24 18:27:52,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-24 18:27:52,071 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:52,071 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:27:52,072 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2025-04-24 18:27:52,072 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 18:27:52,072 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:52,247 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 18:27:52,247 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-24 18:27:52,247 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-24 18:27:52,248 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:27:52,248 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:27:52,248 INFO L139 ounterexampleChecker]: Examining path program with hash 100821841, occurence #1 [2025-04-24 18:27:52,248 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:27:52,248 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:27:52,248 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:27:52,248 INFO L85 PathProgramCache]: Analyzing trace with hash 129671714, now seen corresponding path program 1 times [2025-04-24 18:27:52,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 18:27:52,248 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812057373] [2025-04-24 18:27:52,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:27:52,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 18:27:52,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-24 18:27:52,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-24 18:27:52,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:27:52,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 18:27:52,275 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-24 18:27:52,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-24 18:27:52,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-24 18:27:52,293 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:27:52,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 18:27:52,310 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-24 18:27:52,312 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-24 18:27:52,313 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-04-24 18:27:52,316 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-24 18:27:52,320 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-24 18:27:52,323 INFO L320 ceAbstractionStarter]: Result for error location checkThreadThread1of1ForFork1 was UNSAFE (1/2) [2025-04-24 18:27:52,369 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-24 18:27:52,370 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-24 18:27:52,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-04-24 18:27:52,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.04 06:27:52 BasicIcfg [2025-04-24 18:27:52,381 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-24 18:27:52,381 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-24 18:27:52,382 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-24 18:27:52,382 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-24 18:27:52,383 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 06:27:51" (3/4) ... [2025-04-24 18:27:52,384 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-04-24 18:27:52,385 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-24 18:27:52,386 INFO L158 Benchmark]: Toolchain (without parser) took 2422.31ms. Allocated memory is still 167.8MB. Free memory was 121.6MB in the beginning and 95.2MB in the end (delta: 26.4MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2025-04-24 18:27:52,386 INFO L158 Benchmark]: CDTParser took 0.79ms. Allocated memory is still 201.3MB. Free memory was 116.8MB in the beginning and 116.1MB in the end (delta: 755.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 18:27:52,386 INFO L158 Benchmark]: CACSL2BoogieTranslator took 537.68ms. Allocated memory is still 167.8MB. Free memory was 121.6MB in the beginning and 81.0MB in the end (delta: 40.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-04-24 18:27:52,386 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.65ms. Allocated memory is still 167.8MB. Free memory was 81.0MB in the beginning and 78.0MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 18:27:52,387 INFO L158 Benchmark]: Boogie Preprocessor took 23.38ms. Allocated memory is still 167.8MB. Free memory was 78.0MB in the beginning and 76.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 18:27:52,387 INFO L158 Benchmark]: RCFGBuilder took 455.62ms. Allocated memory is still 167.8MB. Free memory was 76.5MB in the beginning and 43.0MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-04-24 18:27:52,387 INFO L158 Benchmark]: TraceAbstraction took 1346.91ms. Allocated memory is still 167.8MB. Free memory was 43.0MB in the beginning and 95.2MB in the end (delta: -52.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 18:27:52,387 INFO L158 Benchmark]: Witness Printer took 3.70ms. Allocated memory is still 167.8MB. Free memory was 95.2MB in the beginning and 95.2MB in the end (delta: 15.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 18:27:52,388 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79ms. Allocated memory is still 201.3MB. Free memory was 116.8MB in the beginning and 116.1MB in the end (delta: 755.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 537.68ms. Allocated memory is still 167.8MB. Free memory was 121.6MB in the beginning and 81.0MB in the end (delta: 40.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.65ms. Allocated memory is still 167.8MB. Free memory was 81.0MB in the beginning and 78.0MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.38ms. Allocated memory is still 167.8MB. Free memory was 78.0MB in the beginning and 76.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 455.62ms. Allocated memory is still 167.8MB. Free memory was 76.5MB in the beginning and 43.0MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1346.91ms. Allocated memory is still 167.8MB. Free memory was 43.0MB in the beginning and 95.2MB in the end (delta: -52.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.70ms. Allocated memory is still 167.8MB. Free memory was 95.2MB in the beginning and 95.2MB in the end (delta: 15.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Partial order reduction statistics Independence relation #1 benchmarks: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 694, independent: 660, independent conditional: 135, independent unconditional: 525, dependent: 34, dependent conditional: 22, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 673, independent: 660, independent conditional: 135, independent unconditional: 525, dependent: 13, dependent conditional: 1, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 673, independent: 660, independent conditional: 135, independent unconditional: 525, dependent: 13, dependent conditional: 1, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 674, independent: 660, independent conditional: 135, independent unconditional: 525, dependent: 14, dependent conditional: 2, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 674, independent: 660, independent conditional: 0, independent unconditional: 660, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 674, independent: 660, independent conditional: 0, independent unconditional: 660, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 498, independent: 486, independent conditional: 0, independent unconditional: 486, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 498, independent: 480, independent conditional: 0, independent unconditional: 480, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 18, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 18, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 210, independent: 67, independent conditional: 0, independent unconditional: 67, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 674, independent: 174, independent conditional: 0, independent unconditional: 174, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 498, unknown conditional: 0, unknown unconditional: 498] , Statistics on independence cache: Total cache size (in pairs): 498, Positive cache size: 486, Positive conditional cache size: 0, Positive unconditional cache size: 486, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 137, Maximal queried relation: 1, Independence queries for same thread: 21, Persistent sets #1 benchmarks: Persistent set computation time: 0.2s, Number of persistent set computation: 64, Number of trivial persistent sets: 40, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 537, independent: 525, independent conditional: 0, independent unconditional: 525, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 694, independent: 660, independent conditional: 135, independent unconditional: 525, dependent: 34, dependent conditional: 22, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 673, independent: 660, independent conditional: 135, independent unconditional: 525, dependent: 13, dependent conditional: 1, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 673, independent: 660, independent conditional: 135, independent unconditional: 525, dependent: 13, dependent conditional: 1, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 674, independent: 660, independent conditional: 135, independent unconditional: 525, dependent: 14, dependent conditional: 2, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 674, independent: 660, independent conditional: 0, independent unconditional: 660, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 674, independent: 660, independent conditional: 0, independent unconditional: 660, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 498, independent: 486, independent conditional: 0, independent unconditional: 486, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 498, independent: 480, independent conditional: 0, independent unconditional: 480, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 18, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 18, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 210, independent: 67, independent conditional: 0, independent unconditional: 67, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 674, independent: 174, independent conditional: 0, independent unconditional: 174, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 498, unknown conditional: 0, unknown unconditional: 498] , Statistics on independence cache: Total cache size (in pairs): 498, Positive cache size: 486, Positive conditional cache size: 0, Positive unconditional cache size: 486, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 137, Maximal queried relation: 1, Independence queries for same thread: 21 - UnprovableResult [Line: 1299]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of sscanf at line 1245. Possible FailurePath: [L1229] 0 static int iSet = 4; [L1230] 0 static int iCheck = 1; [L1231] 0 static int a = 0; [L1232] 0 static int b = 0; [L1239] 0 int i, err; [L1240] COND TRUE 0 argc != 1 [L1241] COND FALSE 0 !(argc != 3) [L1249] COND FALSE 0 !(iSet > 100000 || iCheck > 100000) [L1252] 0 pthread_t setPool[iSet]; [L1253] 0 pthread_t checkPool[iCheck]; [L1254] 0 i = 0 VAL [\at(argc, Pre)=3, \at(argv, Pre)={49:50}, a=0, argc=3, b=0, checkPool={6:0}, i=0, iCheck=1, iSet=1, setPool={5:0}] [L1254] COND TRUE 0 i < iSet [L1255] EXPR, FCALL, FORK 0 pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\at(argc, Pre)=3, \at(argv, Pre)={49:50}, \at(param, Pre)={0:0}, a=0, argc=3, b=0, checkPool={6:0}, i=0, iCheck=1, iSet=1, setPool={5:0}] [L1283] 1 a = 1 VAL [\at(param, Pre)={0:0}, a=1, b=0, iCheck=1, iSet=1, param={0:0}] [L1255] EXPR 0 err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) [L1255] COND FALSE 0 !(0 != (err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)))) [L1254] 0 i++ VAL [\at(argc, Pre)=3, \at(argv, Pre)={49:50}, \at(param, Pre)={0:0}, a=1, argc=3, b=0, checkPool={6:0}, err=0, i=1, iCheck=1, iSet=1, param={0:0}, setPool={5:0}] [L1254] COND FALSE 0 !(i < iSet) [L1260] 0 i = 0 VAL [\at(argc, Pre)=3, \at(argv, Pre)={49:50}, \at(param, Pre)={0:0}, a=1, argc=3, b=0, checkPool={6:0}, err=0, i=0, iCheck=1, iSet=1, param={0:0}, setPool={5:0}] [L1260] COND TRUE 0 i < iCheck [L1261-L1262] FCALL, FORK 0 pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0)) VAL [\at(argc, Pre)=3, \at(argv, Pre)={49:50}, \at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, argc=3, b=0, checkPool={6:0}, err=0, i=0, iCheck=1, iSet=1, param={0:0}, setPool={5:0}] [L1292] 2 int la = a; VAL [\at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, b=0, iCheck=1, iSet=1, la=1, param={0:0}, param={0:0}] [L1295] 2 int lb = b; VAL [\at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, b=0, iCheck=1, iSet=1, la=1, lb=0, param={0:0}, param={0:0}] [L1297] COND TRUE 2 ! ((la == 0 && lb == 0) || (la == 1 && lb == -1)) [L1299] 2 reach_error() VAL [\at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, b=0, iCheck=1, iSet=1, la=1, lb=0, param={0:0}, param={0:0}] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: checkThreadThread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 42 locations, 49 edges, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.5s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 139 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 could not prove your program: unable to determine feasibility of some traces [2025-04-24 18:27:52,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/pthread/reorder_5.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0517a9ebb69eeca4ecbb6ac063832eb703719698fb2ee670ca348e2c511f9dfd --- Real Ultimate output --- This is Ultimate 0.3.0-?-44c38e6-m [2025-04-24 18:27:54,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 18:27:54,217 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf [2025-04-24 18:27:54,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 18:27:54,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 18:27:54,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 18:27:54,240 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 18:27:54,240 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 18:27:54,240 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 18:27:54,240 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 18:27:54,241 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 18:27:54,241 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 18:27:54,242 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 18:27:54,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 18:27:54,242 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 18:27:54,242 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 18:27:54,242 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 18:27:54,242 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 18:27:54,242 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 18:27:54,242 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 18:27:54,243 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 18:27:54,243 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-04-24 18:27:54,243 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-04-24 18:27:54,243 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 18:27:54,243 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 18:27:54,243 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 18:27:54,243 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 18:27:54,243 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 18:27:54,243 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 18:27:54,243 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 18:27:54,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 18:27:54,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 18:27:54,244 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 18:27:54,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 18:27:54,244 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 18:27:54,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 18:27:54,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 18:27:54,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 18:27:54,245 INFO L153 SettingsManager]: * Refinement strategy for commutativity condition synthesis=FOX [2025-04-24 18:27:54,245 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 18:27:54,245 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 18:27:54,245 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 18:27:54,245 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 18:27:54,245 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-04-24 18:27:54,245 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 18:27:54,245 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-04-24 18:27:54,246 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 18:27:54,246 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 18:27:54,246 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 18:27:54,246 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0517a9ebb69eeca4ecbb6ac063832eb703719698fb2ee670ca348e2c511f9dfd [2025-04-24 18:27:54,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 18:27:54,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 18:27:54,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 18:27:54,492 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 18:27:54,492 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 18:27:54,494 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread/reorder_5.i [2025-04-24 18:27:55,759 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/f99d7bda6/e11a1d9c42854c67aa012e0101cf04a7/FLAG5b84bcfde [2025-04-24 18:27:55,990 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 18:27:55,990 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_5.i [2025-04-24 18:27:56,006 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/f99d7bda6/e11a1d9c42854c67aa012e0101cf04a7/FLAG5b84bcfde [2025-04-24 18:27:56,760 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/f99d7bda6/e11a1d9c42854c67aa012e0101cf04a7 [2025-04-24 18:27:56,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 18:27:56,763 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 18:27:56,764 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 18:27:56,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 18:27:56,766 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 18:27:56,767 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 06:27:56" (1/1) ... [2025-04-24 18:27:56,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39151493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:56, skipping insertion in model container [2025-04-24 18:27:56,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 06:27:56" (1/1) ... [2025-04-24 18:27:56,792 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 18:27:57,134 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_5.i[59755,59768] [2025-04-24 18:27:57,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 18:27:57,145 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 18:27:57,208 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_5.i[59755,59768] [2025-04-24 18:27:57,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 18:27:57,262 INFO L204 MainTranslator]: Completed translation [2025-04-24 18:27:57,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:57 WrapperNode [2025-04-24 18:27:57,262 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 18:27:57,263 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 18:27:57,263 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 18:27:57,263 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 18:27:57,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:57" (1/1) ... [2025-04-24 18:27:57,285 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:57" (1/1) ... [2025-04-24 18:27:57,301 INFO L138 Inliner]: procedures = 374, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 108 [2025-04-24 18:27:57,302 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 18:27:57,302 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 18:27:57,302 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 18:27:57,302 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 18:27:57,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:57" (1/1) ... [2025-04-24 18:27:57,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:57" (1/1) ... [2025-04-24 18:27:57,311 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:57" (1/1) ... [2025-04-24 18:27:57,311 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:57" (1/1) ... [2025-04-24 18:27:57,317 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:57" (1/1) ... [2025-04-24 18:27:57,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:57" (1/1) ... [2025-04-24 18:27:57,320 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:57" (1/1) ... [2025-04-24 18:27:57,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:57" (1/1) ... [2025-04-24 18:27:57,323 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:57" (1/1) ... [2025-04-24 18:27:57,326 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 18:27:57,327 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 18:27:57,327 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 18:27:57,327 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 18:27:57,328 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:57" (1/1) ... [2025-04-24 18:27:57,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 18:27:57,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:27:57,354 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-24 18:27:57,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-24 18:27:57,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2025-04-24 18:27:57,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-24 18:27:57,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-24 18:27:57,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-24 18:27:57,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2025-04-24 18:27:57,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2025-04-24 18:27:57,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-24 18:27:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2025-04-24 18:27:57,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2025-04-24 18:27:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 18:27:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2025-04-24 18:27:57,374 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2025-04-24 18:27:57,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 18:27:57,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 18:27:57,375 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-24 18:27:57,538 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 18:27:57,539 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 18:27:57,725 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 18:27:57,725 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 18:27:57,895 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-24 18:27:57,895 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-24 18:27:57,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 06:27:57 BoogieIcfgContainer [2025-04-24 18:27:57,896 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-24 18:27:57,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-24 18:27:57,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-24 18:27:57,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-24 18:27:57,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 06:27:56" (1/3) ... [2025-04-24 18:27:57,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10785232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 06:27:57, skipping insertion in model container [2025-04-24 18:27:57,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 06:27:57" (2/3) ... [2025-04-24 18:27:57,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10785232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 06:27:57, skipping insertion in model container [2025-04-24 18:27:57,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 06:27:57" (3/3) ... [2025-04-24 18:27:57,903 INFO L128 eAbstractionObserver]: Analyzing ICFG reorder_5.i [2025-04-24 18:27:57,912 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-24 18:27:57,913 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG reorder_5.i that has 3 procedures, 27 locations, 29 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-04-24 18:27:57,913 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-24 18:27:57,948 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-24 18:27:57,978 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 18:27:57,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-24 18:27:57,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:27:57,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2025-04-24 18:27:57,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2025-04-24 18:27:58,041 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 18:27:58,056 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread1of1ForFork1 ======== [2025-04-24 18:27:58,064 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;@4c917264, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 18:27:58,064 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-04-24 18:27:58,213 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:27:58,213 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:27:58,214 INFO L139 ounterexampleChecker]: Examining path program with hash -562282566, occurence #1 [2025-04-24 18:27:58,214 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:27:58,214 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:27:58,217 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:27:58,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1030020328, now seen corresponding path program 1 times [2025-04-24 18:27:58,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-24 18:27:58,224 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380820237] [2025-04-24 18:27:58,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:27:58,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:27:58,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:27:58,226 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 18:27:58,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-24 18:27:58,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-24 18:27:58,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-24 18:27:58,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:27:58,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:27:58,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-24 18:27:58,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 18:27:58,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:27:58,383 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-24 18:27:58,384 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-04-24 18:27:58,384 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380820237] [2025-04-24 18:27:58,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380820237] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:27:58,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:27:58,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-24 18:27:58,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594836333] [2025-04-24 18:27:58,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:27:58,392 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-24 18:27:58,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-04-24 18:27:58,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-24 18:27:58,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-24 18:27:58,405 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:58,406 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:27:58,407 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2025-04-24 18:27:58,407 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:58,637 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 18:27:58,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-24 18:27:58,840 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:27:58,840 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:27:58,840 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:27:58,840 INFO L139 ounterexampleChecker]: Examining path program with hash -105130432, occurence #1 [2025-04-24 18:27:58,840 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:27:58,840 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:27:58,841 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:27:58,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1535768033, now seen corresponding path program 1 times [2025-04-24 18:27:58,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-24 18:27:58,841 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187903474] [2025-04-24 18:27:58,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:27:58,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:27:58,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:27:58,843 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 18:27:58,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-24 18:27:58,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-24 18:27:58,909 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-24 18:27:58,909 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:27:58,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 18:27:58,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-24 18:27:58,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 18:27:58,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-24 18:27:58,985 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-24 18:27:58,985 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-04-24 18:27:58,985 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187903474] [2025-04-24 18:27:58,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187903474] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 18:27:58,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 18:27:58,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-24 18:27:58,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27512229] [2025-04-24 18:27:58,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 18:27:58,987 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-24 18:27:58,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-04-24 18:27:58,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-24 18:27:58,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-24 18:27:58,987 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:58,988 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 18:27:58,988 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2025-04-24 18:27:58,988 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 18:27:58,988 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 18:27:59,221 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 18:27:59,222 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-24 18:27:59,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-04-24 18:27:59,422 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:27:59,423 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 18:27:59,423 INFO L305 artialOrderCegarLoop]: Trying commutativity condition synthesis. [2025-04-24 18:27:59,423 INFO L139 ounterexampleChecker]: Examining path program with hash 400405381, occurence #1 [2025-04-24 18:27:59,423 INFO L141 ounterexampleChecker]: Commutativity condition synthesis is only active after more than 2 occurrences. Skipping... [2025-04-24 18:27:59,423 INFO L316 artialOrderCegarLoop]: No commutativity proof found, falling back to feasibility check. [2025-04-24 18:27:59,423 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 18:27:59,423 INFO L85 PathProgramCache]: Analyzing trace with hash -543494046, now seen corresponding path program 1 times [2025-04-24 18:27:59,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-24 18:27:59,424 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385405942] [2025-04-24 18:27:59,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 18:27:59,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:27:59,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 18:27:59,425 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-24 18:27:59,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-24 18:27:59,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-24 18:27:59,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-24 18:27:59,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:27:59,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 18:27:59,491 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-24 18:27:59,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-24 18:27:59,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-24 18:27:59,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 18:27:59,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 18:27:59,545 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-04-24 18:27:59,545 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-24 18:27:59,545 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-04-24 18:27:59,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-24 18:27:59,747 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 18:27:59,751 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-24 18:27:59,752 INFO L320 ceAbstractionStarter]: Result for error location checkThreadThread1of1ForFork1 was UNSAFE (1/2) [2025-04-24 18:27:59,804 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-24 18:27:59,804 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-24 18:27:59,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-04-24 18:27:59,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.04 06:27:59 BasicIcfg [2025-04-24 18:27:59,813 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-24 18:27:59,814 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-24 18:27:59,814 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-24 18:27:59,814 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-24 18:27:59,814 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 06:27:57" (3/4) ... [2025-04-24 18:27:59,816 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-04-24 18:27:59,817 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-24 18:27:59,818 INFO L158 Benchmark]: Toolchain (without parser) took 3054.87ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 84.3MB in the end (delta: 6.1MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2025-04-24 18:27:59,818 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 83.9MB. Free memory was 62.4MB in the beginning and 62.3MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 18:27:59,818 INFO L158 Benchmark]: CACSL2BoogieTranslator took 499.16ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 48.5MB in the end (delta: 41.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-04-24 18:27:59,820 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.72ms. Allocated memory is still 117.4MB. Free memory was 48.3MB in the beginning and 45.5MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 18:27:59,820 INFO L158 Benchmark]: Boogie Preprocessor took 24.50ms. Allocated memory is still 117.4MB. Free memory was 45.5MB in the beginning and 43.6MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-24 18:27:59,821 INFO L158 Benchmark]: RCFGBuilder took 569.13ms. Allocated memory is still 117.4MB. Free memory was 43.6MB in the beginning and 54.4MB in the end (delta: -10.8MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2025-04-24 18:27:59,821 INFO L158 Benchmark]: TraceAbstraction took 1915.65ms. Allocated memory is still 117.4MB. Free memory was 54.4MB in the beginning and 84.3MB in the end (delta: -29.9MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2025-04-24 18:27:59,821 INFO L158 Benchmark]: Witness Printer took 3.32ms. Allocated memory is still 117.4MB. Free memory was 84.3MB in the beginning and 84.3MB in the end (delta: 5.5kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 18:27:59,822 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 83.9MB. Free memory was 62.4MB in the beginning and 62.3MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 499.16ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 48.5MB in the end (delta: 41.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.72ms. Allocated memory is still 117.4MB. Free memory was 48.3MB in the beginning and 45.5MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.50ms. Allocated memory is still 117.4MB. Free memory was 45.5MB in the beginning and 43.6MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 569.13ms. Allocated memory is still 117.4MB. Free memory was 43.6MB in the beginning and 54.4MB in the end (delta: -10.8MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1915.65ms. Allocated memory is still 117.4MB. Free memory was 54.4MB in the beginning and 84.3MB in the end (delta: -29.9MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Witness Printer took 3.32ms. Allocated memory is still 117.4MB. Free memory was 84.3MB in the beginning and 84.3MB in the end (delta: 5.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Partial order reduction statistics Independence relation #1 benchmarks: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 694, independent: 660, independent conditional: 135, independent unconditional: 525, dependent: 34, dependent conditional: 22, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 673, independent: 660, independent conditional: 135, independent unconditional: 525, dependent: 13, dependent conditional: 1, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 673, independent: 660, independent conditional: 135, independent unconditional: 525, dependent: 13, dependent conditional: 1, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 674, independent: 660, independent conditional: 135, independent unconditional: 525, dependent: 14, dependent conditional: 2, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 674, independent: 660, independent conditional: 0, independent unconditional: 660, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 674, independent: 660, independent conditional: 0, independent unconditional: 660, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 498, independent: 486, independent conditional: 0, independent unconditional: 486, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 498, independent: 480, independent conditional: 0, independent unconditional: 480, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 18, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 18, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 227, independent: 74, independent conditional: 0, independent unconditional: 74, dependent: 153, dependent conditional: 0, dependent unconditional: 153, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 674, independent: 174, independent conditional: 0, independent unconditional: 174, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 498, unknown conditional: 0, unknown unconditional: 498] , Statistics on independence cache: Total cache size (in pairs): 498, Positive cache size: 486, Positive conditional cache size: 0, Positive unconditional cache size: 486, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 137, Maximal queried relation: 1, Independence queries for same thread: 21, Persistent sets #1 benchmarks: Persistent set computation time: 0.3s, Number of persistent set computation: 64, Number of trivial persistent sets: 40, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 537, independent: 525, independent conditional: 0, independent unconditional: 525, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 694, independent: 660, independent conditional: 135, independent unconditional: 525, dependent: 34, dependent conditional: 22, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 673, independent: 660, independent conditional: 135, independent unconditional: 525, dependent: 13, dependent conditional: 1, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 673, independent: 660, independent conditional: 135, independent unconditional: 525, dependent: 13, dependent conditional: 1, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 674, independent: 660, independent conditional: 135, independent unconditional: 525, dependent: 14, dependent conditional: 2, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 674, independent: 660, independent conditional: 0, independent unconditional: 660, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 674, independent: 660, independent conditional: 0, independent unconditional: 660, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 498, independent: 486, independent conditional: 0, independent unconditional: 486, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 498, independent: 480, independent conditional: 0, independent unconditional: 480, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 18, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 18, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 227, independent: 74, independent conditional: 0, independent unconditional: 74, dependent: 153, dependent conditional: 0, dependent unconditional: 153, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 674, independent: 174, independent conditional: 0, independent unconditional: 174, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 498, unknown conditional: 0, unknown unconditional: 498] , Statistics on independence cache: Total cache size (in pairs): 498, Positive cache size: 486, Positive conditional cache size: 0, Positive unconditional cache size: 486, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 137, Maximal queried relation: 1, Independence queries for same thread: 21 - UnprovableResult [Line: 1299]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of sscanf at line 1245. Possible FailurePath: [L1229] 0 static int iSet = 4; [L1230] 0 static int iCheck = 1; [L1231] 0 static int a = 0; [L1232] 0 static int b = 0; [L1239] 0 int i, err; [L1240] COND TRUE 0 argc != 1 [L1241] COND FALSE 0 !(argc != 3) [L1249] COND FALSE 0 !(iSet > 100000 || iCheck > 100000) [L1252] 0 pthread_t setPool[iSet]; [L1253] 0 pthread_t checkPool[iCheck]; [L1254] 0 i = 0 VAL [\at(argc, Pre)=3, \at(argv, Pre)={0:0}, a=0, argc=3, b=0, checkPool={5:0}, i=0, iCheck=1, iSet=1, setPool={21:0}] [L1254] COND TRUE 0 i < iSet [L1255] EXPR, FCALL, FORK 0 pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\at(argc, Pre)=3, \at(argv, Pre)={0:0}, \at(param, Pre)={0:0}, a=0, argc=3, b=0, checkPool={5:0}, i=0, iCheck=1, iSet=1, setPool={21:0}] [L1283] 1 a = 1 VAL [\at(param, Pre)={0:0}, a=1, b=0, iCheck=1, iSet=1, param={0:0}] [L1255] EXPR 0 err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) [L1255] COND FALSE 0 !(0 != (err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)))) [L1254] 0 i++ VAL [\at(argc, Pre)=3, \at(argv, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, argc=3, b=0, checkPool={5:0}, err=0, i=1, iCheck=1, iSet=1, param={0:0}, setPool={21:0}] [L1254] COND FALSE 0 !(i < iSet) [L1260] 0 i = 0 VAL [\at(argc, Pre)=3, \at(argv, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, argc=3, b=0, checkPool={5:0}, err=0, i=0, iCheck=1, iSet=1, param={0:0}, setPool={21:0}] [L1260] COND TRUE 0 i < iCheck [L1261-L1262] FCALL, FORK 0 pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0)) VAL [\at(argc, Pre)=3, \at(argv, Pre)={0:0}, \at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, argc=3, b=0, checkPool={5:0}, err=0, i=0, iCheck=1, iSet=1, param={0:0}, setPool={21:0}] [L1292] 2 int la = a; VAL [\at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, b=0, iCheck=1, iSet=1, la=1, param={0:0}, param={0:0}] [L1295] 2 int lb = b; VAL [\at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, b=0, iCheck=1, iSet=1, la=1, lb=0, param={0:0}, param={0:0}] [L1297] COND TRUE 2 ! ((la == 0 && lb == 0) || (la == 1 && lb == -1)) [L1299] 2 reach_error() VAL [\at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, b=0, iCheck=1, iSet=1, la=1, lb=0, param={0:0}, param={0:0}] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: checkThreadThread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 42 locations, 49 edges, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.6s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 139 SizeOfPredicates, 4 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 could not prove your program: unable to determine feasibility of some traces [2025-04-24 18:27:59,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample