./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/reorder_2.i --full-output --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 42d87675 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_2.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 eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --- Real Ultimate output --- This is Ultimate 0.3.0-dev-42d8767-m [2025-04-24 21:46:24,179 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 21:46:24,238 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-24 21:46:24,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 21:46:24,242 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 21:46:24,263 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 21:46:24,264 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 21:46:24,264 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 21:46:24,264 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 21:46:24,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 21:46:24,265 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 21:46:24,266 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 21:46:24,266 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 21:46:24,266 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 21:46:24,266 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 21:46:24,266 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 21:46:24,267 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-24 21:46:24,267 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 21:46:24,267 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 21:46:24,267 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 21:46:24,267 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 21:46:24,267 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 21:46:24,267 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 21:46:24,267 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 21:46:24,267 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 21:46:24,267 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 21:46:24,267 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 21:46:24,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 21:46:24,267 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 21:46:24,268 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 21:46:24,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 21:46:24,268 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 21:46:24,268 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 21:46:24,268 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 21:46:24,268 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 21:46:24,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 21:46:24,269 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 21:46:24,269 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 21:46:24,269 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 21:46:24,269 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 21:46:24,269 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 21:46:24,269 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-24 21:46:24,269 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 21:46:24,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-24 21:46:24,269 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 21:46:24,269 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 21:46:24,269 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 21:46:24,269 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 -> eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use conditional POR in concurrent analysis -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Commutativity condition synthesis -> NONE [2025-04-24 21:46:24,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 21:46:24,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 21:46:24,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 21:46:24,488 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 21:46:24,488 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 21:46:24,491 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread/reorder_2.i [2025-04-24 21:46:25,781 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/b19e361ef/dbd1974a9c41439d9942785e3e9546cc/FLAGf73c3ff2d [2025-04-24 21:46:26,058 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 21:46:26,061 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_2.i [2025-04-24 21:46:26,080 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/b19e361ef/dbd1974a9c41439d9942785e3e9546cc/FLAGf73c3ff2d [2025-04-24 21:46:26,831 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/b19e361ef/dbd1974a9c41439d9942785e3e9546cc [2025-04-24 21:46:26,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 21:46:26,835 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 21:46:26,835 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 21:46:26,835 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 21:46:26,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 21:46:26,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 09:46:26" (1/1) ... [2025-04-24 21:46:26,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9a65a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:26, skipping insertion in model container [2025-04-24 21:46:26,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 09:46:26" (1/1) ... [2025-04-24 21:46:26,866 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 21:46:27,244 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_2.i[60219,60232] [2025-04-24 21:46:27,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 21:46:27,253 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 21:46:27,308 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_2.i[60219,60232] [2025-04-24 21:46:27,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 21:46:27,354 INFO L204 MainTranslator]: Completed translation [2025-04-24 21:46:27,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:27 WrapperNode [2025-04-24 21:46:27,355 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 21:46:27,355 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 21:46:27,355 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 21:46:27,355 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 21:46:27,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:27" (1/1) ... [2025-04-24 21:46:27,375 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:27" (1/1) ... [2025-04-24 21:46:27,393 INFO L138 Inliner]: procedures = 372, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 108 [2025-04-24 21:46:27,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 21:46:27,394 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 21:46:27,394 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 21:46:27,394 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 21:46:27,400 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:27" (1/1) ... [2025-04-24 21:46:27,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:27" (1/1) ... [2025-04-24 21:46:27,402 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:27" (1/1) ... [2025-04-24 21:46:27,403 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:27" (1/1) ... [2025-04-24 21:46:27,407 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:27" (1/1) ... [2025-04-24 21:46:27,407 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:27" (1/1) ... [2025-04-24 21:46:27,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:27" (1/1) ... [2025-04-24 21:46:27,410 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:27" (1/1) ... [2025-04-24 21:46:27,411 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:27" (1/1) ... [2025-04-24 21:46:27,419 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 21:46:27,419 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 21:46:27,419 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 21:46:27,419 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 21:46:27,420 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:27" (1/1) ... [2025-04-24 21:46:27,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 21:46:27,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 21:46:27,444 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 21:46:27,446 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 21:46:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-24 21:46:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-24 21:46:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-24 21:46:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-24 21:46:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-04-24 21:46:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2025-04-24 21:46:27,461 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2025-04-24 21:46:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-24 21:46:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 21:46:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2025-04-24 21:46:27,461 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2025-04-24 21:46:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-24 21:46:27,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 21:46:27,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 21:46:27,462 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 21:46:27,562 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 21:46:27,563 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 21:46:27,707 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 21:46:27,708 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 21:46:27,842 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-24 21:46:27,843 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-24 21:46:27,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 09:46:27 BoogieIcfgContainer [2025-04-24 21:46:27,843 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-24 21:46:27,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-24 21:46:27,845 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-24 21:46:27,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-24 21:46:27,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 09:46:26" (1/3) ... [2025-04-24 21:46:27,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508e4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 09:46:27, skipping insertion in model container [2025-04-24 21:46:27,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:27" (2/3) ... [2025-04-24 21:46:27,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@508e4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 09:46:27, skipping insertion in model container [2025-04-24 21:46:27,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 09:46:27" (3/3) ... [2025-04-24 21:46:27,853 INFO L128 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2025-04-24 21:46:27,863 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-24 21:46:27,864 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG reorder_2.i that has 3 procedures, 27 locations, 29 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-04-24 21:46:27,864 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-24 21:46:27,902 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-24 21:46:27,933 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 21:46:27,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-24 21:46:27,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 21:46:27,936 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 21:46:27,937 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 21:46:27,996 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 21:46:28,004 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread1of1ForFork1 ======== [2025-04-24 21:46:28,011 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;@6100f229, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 21:46:28,011 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-04-24 21:46:28,046 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 21:46:28,048 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 21:46:28,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2060144042, now seen corresponding path program 1 times [2025-04-24 21:46:28,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 21:46:28,054 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866700230] [2025-04-24 21:46:28,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 21:46:28,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 21:46:28,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-24 21:46:28,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-24 21:46:28,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 21:46:28,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 21:46:28,298 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 21:46:28,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 21:46:28,300 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866700230] [2025-04-24 21:46:28,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866700230] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 21:46:28,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 21:46:28,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-24 21:46:28,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715650295] [2025-04-24 21:46:28,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 21:46:28,305 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-24 21:46:28,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 21:46:28,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-24 21:46:28,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-24 21:46:28,318 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 21:46:28,319 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 21:46:28,320 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 21:46:28,320 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 21:46:28,436 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 21:46:28,436 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-24 21:46:28,436 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 21:46:28,436 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 21:46:28,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1339779261, now seen corresponding path program 1 times [2025-04-24 21:46:28,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 21:46:28,437 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533910601] [2025-04-24 21:46:28,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 21:46:28,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 21:46:28,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-24 21:46:28,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-24 21:46:28,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 21:46:28,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 21:46:28,643 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 21:46:28,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-24 21:46:28,643 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533910601] [2025-04-24 21:46:28,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533910601] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 21:46:28,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 21:46:28,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-24 21:46:28,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044734572] [2025-04-24 21:46:28,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 21:46:28,644 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-24 21:46:28,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-24 21:46:28,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-24 21:46:28,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-24 21:46:28,645 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 21:46:28,645 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 21:46:28,645 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 21:46:28,645 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 21:46:28,645 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 21:46:28,830 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 21:46:28,831 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-24 21:46:28,831 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-24 21:46:28,831 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 21:46:28,832 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 21:46:28,832 INFO L85 PathProgramCache]: Analyzing trace with hash 875925956, now seen corresponding path program 1 times [2025-04-24 21:46:28,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-24 21:46:28,833 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308438973] [2025-04-24 21:46:28,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 21:46:28,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-24 21:46:28,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-24 21:46:28,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-24 21:46:28,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 21:46:28,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 21:46:28,871 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-24 21:46:28,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-24 21:46:28,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-24 21:46:28,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 21:46:28,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 21:46:28,903 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-24 21:46:28,903 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-24 21:46:28,904 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-04-24 21:46:28,905 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-24 21:46:28,911 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-24 21:46:28,913 INFO L320 ceAbstractionStarter]: Result for error location checkThreadThread1of1ForFork1 was UNSAFE (1/2) [2025-04-24 21:46:28,940 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-24 21:46:28,940 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-24 21:46:28,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2025-04-24 21:46:28,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.04 09:46:28 BasicIcfg [2025-04-24 21:46:28,949 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-24 21:46:28,949 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-24 21:46:28,949 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-24 21:46:28,949 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-24 21:46:28,950 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 09:46:27" (3/4) ... [2025-04-24 21:46:28,952 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-04-24 21:46:28,952 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-24 21:46:28,953 INFO L158 Benchmark]: Toolchain (without parser) took 2118.34ms. Allocated memory is still 142.6MB. Free memory was 110.7MB in the beginning and 80.9MB in the end (delta: 29.8MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2025-04-24 21:46:28,953 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 21:46:28,953 INFO L158 Benchmark]: CACSL2BoogieTranslator took 519.40ms. Allocated memory is still 142.6MB. Free memory was 110.3MB in the beginning and 70.0MB in the end (delta: 40.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-04-24 21:46:28,954 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.09ms. Allocated memory is still 142.6MB. Free memory was 70.0MB in the beginning and 67.2MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 21:46:28,954 INFO L158 Benchmark]: Boogie Preprocessor took 25.10ms. Allocated memory is still 142.6MB. Free memory was 67.2MB in the beginning and 65.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 21:46:28,954 INFO L158 Benchmark]: RCFGBuilder took 424.07ms. Allocated memory is still 142.6MB. Free memory was 65.9MB in the beginning and 101.1MB in the end (delta: -35.3MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. [2025-04-24 21:46:28,954 INFO L158 Benchmark]: TraceAbstraction took 1104.40ms. Allocated memory is still 142.6MB. Free memory was 100.6MB in the beginning and 80.9MB in the end (delta: 19.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-04-24 21:46:28,954 INFO L158 Benchmark]: Witness Printer took 2.93ms. Allocated memory is still 142.6MB. Free memory was 80.9MB in the beginning and 80.9MB in the end (delta: 13.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 21:46:28,956 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 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 519.40ms. Allocated memory is still 142.6MB. Free memory was 110.3MB in the beginning and 70.0MB in the end (delta: 40.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.09ms. Allocated memory is still 142.6MB. Free memory was 70.0MB in the beginning and 67.2MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.10ms. Allocated memory is still 142.6MB. Free memory was 67.2MB in the beginning and 65.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 424.07ms. Allocated memory is still 142.6MB. Free memory was 65.9MB in the beginning and 101.1MB in the end (delta: -35.3MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1104.40ms. Allocated memory is still 142.6MB. Free memory was 100.6MB in the beginning and 80.9MB in the end (delta: 19.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 2.93ms. Allocated memory is still 142.6MB. Free memory was 80.9MB in the beginning and 80.9MB in the end (delta: 13.7kB). 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: CachedIndependenceRelation.Independence Queries: [ total: 673, independent: 660, independent conditional: 0, independent unconditional: 660, dependent: 13, dependent conditional: 0, dependent unconditional: 13, 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: 32, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 673, independent: 174, independent conditional: 0, independent unconditional: 174, dependent: 1, dependent conditional: 0, dependent unconditional: 1, 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, Independence queries for same thread: 21, Persistent sets #1 benchmarks: Persistent set computation time: 0.1s, Number of persistent set computation: 64, Number of trivial persistent sets: 40, Underlying independence 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: CachedIndependenceRelation.Independence Queries: [ total: 673, independent: 660, independent conditional: 0, independent unconditional: 660, dependent: 13, dependent conditional: 0, dependent unconditional: 13, 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: 32, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 673, independent: 174, independent conditional: 0, independent unconditional: 174, dependent: 1, dependent conditional: 0, dependent unconditional: 1, 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, Independence queries for same thread: 21 - UnprovableResult [Line: 1307]: 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 1253. Possible FailurePath: [L1238] 0 static int iSet = 2; [L1239] 0 static int iCheck = 2; [L1240] 0 static int a = 0; [L1241] 0 static int b = 0; [L1247] 0 int i, err; [L1248] COND TRUE 0 argc != 1 [L1249] COND FALSE 0 !(argc != 3) [L1257] COND FALSE 0 !(iSet > 100000 || iCheck > 100000) [L1260] 0 pthread_t setPool[iSet]; [L1261] 0 pthread_t checkPool[iCheck]; [L1262] 0 i = 0 VAL [\at(argc, Pre)=3, \at(argv, Pre)={49:50}, a=0, argc=3, b=0, checkPool={5:0}, i=0, iCheck=2, iSet=1, setPool={6:0}] [L1262] COND TRUE 0 i < iSet [L1263] 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={5:0}, i=0, iCheck=2, iSet=1, setPool={6:0}] [L1291] 1 a = 1 VAL [\at(param, Pre)={0:0}, a=1, b=0, iCheck=2, iSet=1, param={0:0}] [L1263] EXPR 0 err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) [L1263] COND FALSE 0 !(0 != (err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)))) [L1262] 0 i++ VAL [\at(argc, Pre)=3, \at(argv, Pre)={49:50}, \at(param, Pre)={0:0}, a=1, argc=3, b=0, checkPool={5:0}, err=0, i=1, iCheck=2, iSet=1, param={0:0}, setPool={6:0}] [L1262] COND FALSE 0 !(i < iSet) [L1268] 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={5:0}, err=0, i=0, iCheck=2, iSet=1, param={0:0}, setPool={6:0}] [L1268] COND TRUE 0 i < iCheck [L1269-L1270] 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={5:0}, err=0, i=0, iCheck=2, iSet=1, param={0:0}, setPool={6:0}] [L1300] 2 int la = a; VAL [\at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, b=0, iCheck=2, iSet=1, la=1, param={0:0}, param={0:0}] [L1303] 2 int lb = b; VAL [\at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, b=0, iCheck=2, iSet=1, la=1, lb=0, param={0:0}, param={0:0}] [L1305] COND TRUE 2 ! ((la == 0 && lb == 0) || (la == 1 && lb == -1)) [L1307] 2 reach_error() VAL [\at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, b=0, iCheck=2, 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: 0.9s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 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, 0.3s 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: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-04-24 21:46:28,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, 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_2.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 eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --- Real Ultimate output --- This is Ultimate 0.3.0-dev-42d8767-m [2025-04-24 21:46:30,822 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 21:46:30,898 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf [2025-04-24 21:46:30,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 21:46:30,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 21:46:30,934 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 21:46:30,935 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 21:46:30,935 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 21:46:30,935 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 21:46:30,935 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 21:46:30,936 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 21:46:30,936 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 21:46:30,937 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 21:46:30,937 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 21:46:30,937 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 21:46:30,937 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 21:46:30,937 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 21:46:30,937 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 21:46:30,937 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 21:46:30,937 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 21:46:30,938 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 21:46:30,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 21:46:30,938 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * Refinement strategy for commutativity condition synthesis=FOX [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 21:46:30,938 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 21:46:30,939 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-04-24 21:46:30,939 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 21:46:30,939 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-04-24 21:46:30,939 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 21:46:30,939 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 21:46:30,939 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 21:46:30,939 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 -> eaeb1d72262bd1e189945b98598b3acb68c08676109949c39074605b8c62cb69 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use conditional POR in concurrent analysis -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Commutativity condition synthesis -> NONE [2025-04-24 21:46:31,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 21:46:31,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 21:46:31,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 21:46:31,185 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 21:46:31,186 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 21:46:31,186 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread/reorder_2.i [2025-04-24 21:46:32,566 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/6b8a488e8/14688882e4804539b67ab9367a3e6274/FLAGde86d2744 [2025-04-24 21:46:32,809 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 21:46:32,811 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_2.i [2025-04-24 21:46:32,830 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/6b8a488e8/14688882e4804539b67ab9367a3e6274/FLAGde86d2744 [2025-04-24 21:46:33,617 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/6b8a488e8/14688882e4804539b67ab9367a3e6274 [2025-04-24 21:46:33,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 21:46:33,620 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 21:46:33,621 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 21:46:33,621 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 21:46:33,624 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 21:46:33,626 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 09:46:33" (1/1) ... [2025-04-24 21:46:33,626 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8aad84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:33, skipping insertion in model container [2025-04-24 21:46:33,626 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 09:46:33" (1/1) ... [2025-04-24 21:46:33,652 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 21:46:33,979 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_2.i[60219,60232] [2025-04-24 21:46:33,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 21:46:33,990 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 21:46:34,056 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_2.i[60219,60232] [2025-04-24 21:46:34,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 21:46:34,113 INFO L204 MainTranslator]: Completed translation [2025-04-24 21:46:34,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:34 WrapperNode [2025-04-24 21:46:34,114 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 21:46:34,115 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 21:46:34,115 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 21:46:34,115 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 21:46:34,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:34" (1/1) ... [2025-04-24 21:46:34,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:34" (1/1) ... [2025-04-24 21:46:34,156 INFO L138 Inliner]: procedures = 375, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 107 [2025-04-24 21:46:34,156 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 21:46:34,157 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 21:46:34,157 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 21:46:34,157 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 21:46:34,164 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:34" (1/1) ... [2025-04-24 21:46:34,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:34" (1/1) ... [2025-04-24 21:46:34,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:34" (1/1) ... [2025-04-24 21:46:34,171 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:34" (1/1) ... [2025-04-24 21:46:34,180 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:34" (1/1) ... [2025-04-24 21:46:34,185 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:34" (1/1) ... [2025-04-24 21:46:34,187 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:34" (1/1) ... [2025-04-24 21:46:34,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:34" (1/1) ... [2025-04-24 21:46:34,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:34" (1/1) ... [2025-04-24 21:46:34,199 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 21:46:34,202 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 21:46:34,202 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 21:46:34,203 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 21:46:34,204 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:34" (1/1) ... [2025-04-24 21:46:34,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 21:46:34,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 21:46:34,230 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 21:46:34,232 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 21:46:34,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2025-04-24 21:46:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-24 21:46:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-24 21:46:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-24 21:46:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2025-04-24 21:46:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2025-04-24 21:46:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-24 21:46:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2025-04-24 21:46:34,250 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2025-04-24 21:46:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 21:46:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2025-04-24 21:46:34,250 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2025-04-24 21:46:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 21:46:34,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 21:46:34,251 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 21:46:34,369 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 21:46:34,370 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 21:46:34,517 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 21:46:34,517 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 21:46:34,636 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-24 21:46:34,637 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-24 21:46:34,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 09:46:34 BoogieIcfgContainer [2025-04-24 21:46:34,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-24 21:46:34,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-24 21:46:34,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-24 21:46:34,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-24 21:46:34,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.04 09:46:33" (1/3) ... [2025-04-24 21:46:34,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eefc84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 09:46:34, skipping insertion in model container [2025-04-24 21:46:34,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 09:46:34" (2/3) ... [2025-04-24 21:46:34,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eefc84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.04 09:46:34, skipping insertion in model container [2025-04-24 21:46:34,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 09:46:34" (3/3) ... [2025-04-24 21:46:34,646 INFO L128 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2025-04-24 21:46:34,655 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-24 21:46:34,657 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG reorder_2.i that has 3 procedures, 27 locations, 29 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-04-24 21:46:34,658 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-24 21:46:34,694 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-24 21:46:34,724 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 21:46:34,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-24 21:46:34,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 21:46:34,728 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 21:46:34,730 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 21:46:34,783 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-24 21:46:34,789 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread1of1ForFork1 ======== [2025-04-24 21:46:34,794 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;@7ceabfc0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-24 21:46:34,794 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-04-24 21:46:34,858 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 21:46:34,861 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 21:46:34,861 INFO L85 PathProgramCache]: Analyzing trace with hash 529937236, now seen corresponding path program 1 times [2025-04-24 21:46:34,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-24 21:46:34,868 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747363023] [2025-04-24 21:46:34,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 21:46:34,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 21:46:34,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 21:46:34,871 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 21:46:34,871 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 21:46:34,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-04-24 21:46:34,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-04-24 21:46:34,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 21:46:34,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 21:46:34,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-24 21:46:34,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 21:46:35,038 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 21:46:35,038 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-24 21:46:35,039 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-04-24 21:46:35,039 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747363023] [2025-04-24 21:46:35,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747363023] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 21:46:35,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 21:46:35,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-24 21:46:35,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997508625] [2025-04-24 21:46:35,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 21:46:35,043 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-24 21:46:35,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-04-24 21:46:35,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-24 21:46:35,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-24 21:46:35,056 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 21:46:35,057 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 21:46:35,058 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 21:46:35,058 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 21:46:35,220 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 21:46:35,233 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 21:46:35,421 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 21:46:35,422 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 21:46:35,422 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 21:46:35,422 INFO L85 PathProgramCache]: Analyzing trace with hash 287987011, now seen corresponding path program 1 times [2025-04-24 21:46:35,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-24 21:46:35,423 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [11239265] [2025-04-24 21:46:35,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 21:46:35,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 21:46:35,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 21:46:35,425 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 21:46:35,426 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 21:46:35,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-04-24 21:46:35,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-04-24 21:46:35,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 21:46:35,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-24 21:46:35,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-04-24 21:46:35,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-24 21:46:35,573 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 21:46:35,574 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-24 21:46:35,574 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-04-24 21:46:35,574 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11239265] [2025-04-24 21:46:35,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11239265] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-24 21:46:35,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-24 21:46:35,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-24 21:46:35,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335680523] [2025-04-24 21:46:35,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-24 21:46:35,575 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-24 21:46:35,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-04-24 21:46:35,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-24 21:46:35,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-24 21:46:35,576 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-24 21:46:35,576 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-24 21:46:35,576 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 21:46:35,576 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-04-24 21:46:35,576 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-24 21:46:35,812 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-24 21:46:35,813 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-24 21:46:35,820 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 21:46:36,018 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 21:46:36,018 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-04-24 21:46:36,018 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-24 21:46:36,019 INFO L85 PathProgramCache]: Analyzing trace with hash 202760196, now seen corresponding path program 1 times [2025-04-24 21:46:36,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-24 21:46:36,019 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788152614] [2025-04-24 21:46:36,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-24 21:46:36,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-24 21:46:36,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 21:46:36,022 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 21:46:36,023 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 21:46:36,067 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-24 21:46:36,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-24 21:46:36,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 21:46:36,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 21:46:36,083 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-24 21:46:36,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-24 21:46:36,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-24 21:46:36,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-24 21:46:36,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-24 21:46:36,122 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-04-24 21:46:36,123 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-24 21:46:36,123 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-04-24 21:46:36,132 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 21:46:36,325 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 21:46:36,329 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-24 21:46:36,330 INFO L320 ceAbstractionStarter]: Result for error location checkThreadThread1of1ForFork1 was UNSAFE (1/2) [2025-04-24 21:46:36,365 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-24 21:46:36,365 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-24 21:46:36,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2025-04-24 21:46:36,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.04 09:46:36 BasicIcfg [2025-04-24 21:46:36,378 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-24 21:46:36,378 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-24 21:46:36,378 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-24 21:46:36,378 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-24 21:46:36,379 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.04 09:46:34" (3/4) ... [2025-04-24 21:46:36,381 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-04-24 21:46:36,381 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-24 21:46:36,382 INFO L158 Benchmark]: Toolchain (without parser) took 2761.84ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 63.6MB in the end (delta: 26.2MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. [2025-04-24 21:46:36,382 INFO L158 Benchmark]: CDTParser took 2.21ms. Allocated memory is still 83.9MB. Free memory was 62.1MB in the beginning and 62.1MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 21:46:36,383 INFO L158 Benchmark]: CACSL2BoogieTranslator took 493.99ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 47.9MB in the end (delta: 42.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-04-24 21:46:36,383 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.21ms. Allocated memory is still 117.4MB. Free memory was 47.6MB in the beginning and 44.8MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-24 21:46:36,383 INFO L158 Benchmark]: Boogie Preprocessor took 44.67ms. Allocated memory is still 117.4MB. Free memory was 44.8MB in the beginning and 43.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 21:46:36,383 INFO L158 Benchmark]: RCFGBuilder took 435.67ms. Allocated memory is still 117.4MB. Free memory was 43.0MB in the beginning and 56.1MB in the end (delta: -13.1MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2025-04-24 21:46:36,383 INFO L158 Benchmark]: TraceAbstraction took 1738.82ms. Allocated memory is still 117.4MB. Free memory was 55.4MB in the beginning and 63.7MB in the end (delta: -8.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 21:46:36,384 INFO L158 Benchmark]: Witness Printer took 2.86ms. Allocated memory is still 117.4MB. Free memory was 63.7MB in the beginning and 63.6MB in the end (delta: 5.5kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 21:46:36,385 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.21ms. Allocated memory is still 83.9MB. Free memory was 62.1MB in the beginning and 62.1MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 493.99ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 47.9MB in the end (delta: 42.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.21ms. Allocated memory is still 117.4MB. Free memory was 47.6MB in the beginning and 44.8MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.67ms. Allocated memory is still 117.4MB. Free memory was 44.8MB in the beginning and 43.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 435.67ms. Allocated memory is still 117.4MB. Free memory was 43.0MB in the beginning and 56.1MB in the end (delta: -13.1MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1738.82ms. Allocated memory is still 117.4MB. Free memory was 55.4MB in the beginning and 63.7MB in the end (delta: -8.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.86ms. Allocated memory is still 117.4MB. Free memory was 63.7MB in the beginning and 63.6MB 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: CachedIndependenceRelation.Independence Queries: [ total: 673, independent: 660, independent conditional: 0, independent unconditional: 660, dependent: 13, dependent conditional: 0, dependent unconditional: 13, 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: 56, independent: 31, independent conditional: 0, independent unconditional: 31, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 673, independent: 174, independent conditional: 0, independent unconditional: 174, dependent: 1, dependent conditional: 0, dependent unconditional: 1, 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, Independence queries for same thread: 21, Persistent sets #1 benchmarks: Persistent set computation time: 0.1s, Number of persistent set computation: 64, Number of trivial persistent sets: 40, Underlying independence 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: CachedIndependenceRelation.Independence Queries: [ total: 673, independent: 660, independent conditional: 0, independent unconditional: 660, dependent: 13, dependent conditional: 0, dependent unconditional: 13, 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: 56, independent: 31, independent conditional: 0, independent unconditional: 31, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 673, independent: 174, independent conditional: 0, independent unconditional: 174, dependent: 1, dependent conditional: 0, dependent unconditional: 1, 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, Independence queries for same thread: 21 - UnprovableResult [Line: 1307]: 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 1253. Possible FailurePath: [L1238] 0 static int iSet = 2; [L1239] 0 static int iCheck = 2; [L1240] 0 static int a = 0; [L1241] 0 static int b = 0; [L1247] 0 int i, err; [L1248] COND TRUE 0 argc != 1 [L1249] COND FALSE 0 !(argc != 3) [L1257] COND FALSE 0 !(iSet > 100000 || iCheck > 100000) [L1260] 0 pthread_t setPool[iSet]; [L1261] 0 pthread_t checkPool[iCheck]; [L1262] 0 i = 0 VAL [\at(argc, Pre)=3, \at(argv, Pre)={0:0}, a=0, argc=3, b=0, checkPool={3:0}, i=0, iCheck=1, iSet=1, setPool={35:0}] [L1262] COND TRUE 0 i < iSet [L1263] 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={3:0}, i=0, iCheck=1, iSet=1, setPool={35:0}] [L1291] 1 a = 1 VAL [\at(param, Pre)={0:0}, a=1, b=0, iCheck=1, iSet=1, param={0:0}] [L1263] EXPR 0 err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) [L1263] COND FALSE 0 !(0 != (err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)))) [L1262] 0 i++ VAL [\at(argc, Pre)=3, \at(argv, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, argc=3, b=0, checkPool={3:0}, err=0, i=1, iCheck=1, iSet=1, param={0:0}, setPool={35:0}] [L1262] COND FALSE 0 !(i < iSet) [L1268] 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={3:0}, err=0, i=0, iCheck=1, iSet=1, param={0:0}, setPool={35:0}] [L1268] COND TRUE 0 i < iCheck [L1269-L1270] 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={3:0}, err=0, i=0, iCheck=1, iSet=1, param={0:0}, setPool={35:0}] [L1300] 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}] [L1303] 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}] [L1305] COND TRUE 2 ! ((la == 0 && lb == 0) || (la == 1 && lb == -1)) [L1307] 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: 1.6s, 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, 0.2s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 139 SizeOfPredicates, 4 NumberOfNonLiveVariables, 125 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: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-04-24 21:46:36,398 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