./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/reorder_5.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 6f232940 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/pthread/reorder_5.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0517a9ebb69eeca4ecbb6ac063832eb703719698fb2ee670ca348e2c511f9dfd --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6f23294-m [2025-03-19 09:55:54,873 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-19 09:55:54,955 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-03-19 09:55:54,961 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-19 09:55:54,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-19 09:55:54,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-19 09:55:54,979 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-19 09:55:54,980 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-19 09:55:54,980 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-19 09:55:54,980 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-19 09:55:54,980 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-19 09:55:54,980 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-19 09:55:54,980 INFO L153 SettingsManager]: * Use SBE=true [2025-03-19 09:55:54,980 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-19 09:55:54,980 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-19 09:55:54,980 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-19 09:55:54,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-19 09:55:54,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-19 09:55:54,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-19 09:55:54,980 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-19 09:55:54,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-19 09:55:54,981 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-19 09:55:54,981 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-19 09:55:54,981 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-19 09:55:54,981 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-19 09:55:54,981 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-19 09:55:54,981 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-03-19 09:55:54,981 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-19 09:55:54,981 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-19 09:55:54,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-19 09:55:54,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-19 09:55:54,981 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-19 09:55:54,981 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-19 09:55:54,981 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-19 09:55:54,981 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-03-19 09:55:54,981 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-19 09:55:54,981 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-19 09:55:54,984 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-03-19 09:55:54,984 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-19 09:55:54,985 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-03-19 09:55:54,985 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-03-19 09:55:54,985 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-03-19 09:55:54,985 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0517a9ebb69eeca4ecbb6ac063832eb703719698fb2ee670ca348e2c511f9dfd 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 [2025-03-19 09:55:55,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-19 09:55:55,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-19 09:55:55,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-19 09:55:55,242 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-19 09:55:55,243 INFO L274 PluginConnector]: CDTParser initialized [2025-03-19 09:55:55,243 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread/reorder_5.i [2025-03-19 09:55:56,556 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/73afba6a8/af4daec7580a4fadb59eb4cafb13976c/FLAGdf55e9507 [2025-03-19 09:55:56,791 INFO L389 CDTParser]: Found 1 translation units. [2025-03-19 09:55:56,791 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_5.i [2025-03-19 09:55:56,809 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/73afba6a8/af4daec7580a4fadb59eb4cafb13976c/FLAGdf55e9507 [2025-03-19 09:55:57,606 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/73afba6a8/af4daec7580a4fadb59eb4cafb13976c [2025-03-19 09:55:57,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-19 09:55:57,609 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-19 09:55:57,610 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-19 09:55:57,610 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-19 09:55:57,613 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-19 09:55:57,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 09:55:57" (1/1) ... [2025-03-19 09:55:57,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3914ef81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:55:57, skipping insertion in model container [2025-03-19 09:55:57,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 09:55:57" (1/1) ... [2025-03-19 09:55:57,645 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-19 09:55:57,998 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_5.i[59755,59768] [2025-03-19 09:55:58,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-19 09:55:58,006 INFO L200 MainTranslator]: Completed pre-run [2025-03-19 09:55:58,059 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_5.i[59755,59768] [2025-03-19 09:55:58,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-19 09:55:58,115 INFO L204 MainTranslator]: Completed translation [2025-03-19 09:55:58,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:55:58 WrapperNode [2025-03-19 09:55:58,116 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-19 09:55:58,117 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-19 09:55:58,117 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-19 09:55:58,117 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-19 09:55:58,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:55:58" (1/1) ... [2025-03-19 09:55:58,134 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:55:58" (1/1) ... [2025-03-19 09:55:58,151 INFO L138 Inliner]: procedures = 371, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 109 [2025-03-19 09:55:58,151 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-19 09:55:58,151 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-19 09:55:58,151 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-19 09:55:58,151 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-19 09:55:58,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:55:58" (1/1) ... [2025-03-19 09:55:58,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:55:58" (1/1) ... [2025-03-19 09:55:58,159 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:55:58" (1/1) ... [2025-03-19 09:55:58,159 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:55:58" (1/1) ... [2025-03-19 09:55:58,167 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:55:58" (1/1) ... [2025-03-19 09:55:58,172 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:55:58" (1/1) ... [2025-03-19 09:55:58,174 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:55:58" (1/1) ... [2025-03-19 09:55:58,180 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:55:58" (1/1) ... [2025-03-19 09:55:58,180 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:55:58" (1/1) ... [2025-03-19 09:55:58,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-19 09:55:58,184 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-03-19 09:55:58,185 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-03-19 09:55:58,185 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-03-19 09:55:58,185 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:55:58" (1/1) ... [2025-03-19 09:55:58,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-19 09:55:58,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 09:55:58,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2025-03-19 09:55:58,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2025-03-19 09:55:58,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-19 09:55:58,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-19 09:55:58,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-19 09:55:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-19 09:55:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-19 09:55:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2025-03-19 09:55:58,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2025-03-19 09:55:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-19 09:55:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-19 09:55:58,234 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2025-03-19 09:55:58,234 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2025-03-19 09:55:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-19 09:55:58,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-19 09:55:58,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-19 09:55:58,236 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-19 09:55:58,353 INFO L234 CfgBuilder]: Building ICFG [2025-03-19 09:55:58,355 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-19 09:55:58,538 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-19 09:55:58,538 INFO L283 CfgBuilder]: Performing block encoding [2025-03-19 09:55:58,638 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-19 09:55:58,639 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-19 09:55:58,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 09:55:58 BoogieIcfgContainer [2025-03-19 09:55:58,639 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-03-19 09:55:58,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-19 09:55:58,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-19 09:55:58,644 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-19 09:55:58,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 09:55:57" (1/3) ... [2025-03-19 09:55:58,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c5500d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 09:55:58, skipping insertion in model container [2025-03-19 09:55:58,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:55:58" (2/3) ... [2025-03-19 09:55:58,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c5500d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 09:55:58, skipping insertion in model container [2025-03-19 09:55:58,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 09:55:58" (3/3) ... [2025-03-19 09:55:58,647 INFO L128 eAbstractionObserver]: Analyzing ICFG reorder_5.i [2025-03-19 09:55:58,656 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-19 09:55:58,658 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG reorder_5.i that has 3 procedures, 27 locations, 29 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-19 09:55:58,659 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-19 09:55:58,688 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-19 09:55:58,718 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-19 09:55:58,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-03-19 09:55:58,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 09:55:58,722 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) [2025-03-19 09:55:58,724 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 [2025-03-19 09:55:58,782 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-03-19 09:55:58,790 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread1of1ForFork1 ======== [2025-03-19 09:55:58,796 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;@2d5c6c87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-19 09:55:58,796 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-19 09:55:58,914 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-19 09:55:58,917 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-19 09:55:58,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1560060950, now seen corresponding path program 1 times [2025-03-19 09:55:58,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-19 09:55:58,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041941228] [2025-03-19 09:55:58,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-19 09:55:58,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-19 09:55:58,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-19 09:55:59,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-19 09:55:59,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 09:55:59,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-19 09:55:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-19 09:55:59,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-19 09:55:59,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041941228] [2025-03-19 09:55:59,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041941228] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-19 09:55:59,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-19 09:55:59,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-19 09:55:59,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516720043] [2025-03-19 09:55:59,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-19 09:55:59,209 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-19 09:55:59,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-19 09:55:59,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-19 09:55:59,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-19 09:55:59,224 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-19 09:55:59,225 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-19 09:55:59,226 INFO L481 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) [2025-03-19 09:55:59,226 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-19 09:55:59,394 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-19 09:55:59,395 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-19 09:55:59,395 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-19 09:55:59,395 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-19 09:55:59,395 INFO L85 PathProgramCache]: Analyzing trace with hash -91998239, now seen corresponding path program 1 times [2025-03-19 09:55:59,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-19 09:55:59,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379250772] [2025-03-19 09:55:59,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-19 09:55:59,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-19 09:55:59,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-19 09:55:59,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-19 09:55:59,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 09:55:59,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-19 09:55:59,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-19 09:55:59,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-19 09:55:59,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379250772] [2025-03-19 09:55:59,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379250772] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-19 09:55:59,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-19 09:55:59,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-19 09:55:59,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886569245] [2025-03-19 09:55:59,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-19 09:55:59,573 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-19 09:55:59,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-19 09:55:59,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-19 09:55:59,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-19 09:55:59,574 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-19 09:55:59,574 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-19 09:55:59,574 INFO L481 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) [2025-03-19 09:55:59,575 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-03-19 09:55:59,575 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-19 09:55:59,754 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-19 09:55:59,755 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-19 09:55:59,755 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-19 09:55:59,756 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-19 09:55:59,756 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-19 09:55:59,756 INFO L85 PathProgramCache]: Analyzing trace with hash 129671714, now seen corresponding path program 1 times [2025-03-19 09:55:59,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-19 09:55:59,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069827475] [2025-03-19 09:55:59,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-19 09:55:59,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-19 09:55:59,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-19 09:55:59,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-19 09:55:59,779 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 09:55:59,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-19 09:55:59,779 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-19 09:55:59,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-19 09:55:59,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-19 09:55:59,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 09:55:59,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-19 09:55:59,813 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-19 09:55:59,815 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-19 09:55:59,815 INFO L791 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-19 09:55:59,817 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-19 09:55:59,820 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-19 09:55:59,821 INFO L320 ceAbstractionStarter]: Result for error location checkThreadThread1of1ForFork1 was UNSAFE (1/2) [2025-03-19 09:55:59,862 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-19 09:55:59,863 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-03-19 09:55:59,871 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 [2025-03-19 09:55:59,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 09:55:59 BasicIcfg [2025-03-19 09:55:59,872 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-19 09:55:59,873 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-19 09:55:59,873 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-19 09:55:59,873 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-19 09:55:59,873 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 09:55:58" (3/4) ... [2025-03-19 09:55:59,874 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-19 09:55:59,875 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-19 09:55:59,877 INFO L158 Benchmark]: Toolchain (without parser) took 2266.96ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 57.9MB in the end (delta: 32.0MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2025-03-19 09:55:59,877 INFO L158 Benchmark]: CDTParser took 2.51ms. Allocated memory is still 83.9MB. Free memory is still 61.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-19 09:55:59,878 INFO L158 Benchmark]: CACSL2BoogieTranslator took 506.72ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 48.7MB in the end (delta: 41.2MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-19 09:55:59,878 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.29ms. Allocated memory is still 117.4MB. Free memory was 48.7MB in the beginning and 46.3MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-19 09:55:59,878 INFO L158 Benchmark]: Boogie Preprocessor took 32.44ms. Allocated memory is still 117.4MB. Free memory was 46.3MB in the beginning and 45.0MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-19 09:55:59,879 INFO L158 Benchmark]: RCFGBuilder took 454.78ms. Allocated memory is still 117.4MB. Free memory was 45.0MB in the beginning and 65.6MB in the end (delta: -20.6MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2025-03-19 09:55:59,879 INFO L158 Benchmark]: TraceAbstraction took 1231.47ms. Allocated memory is still 117.4MB. Free memory was 65.0MB in the beginning and 57.9MB in the end (delta: 7.1MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2025-03-19 09:55:59,879 INFO L158 Benchmark]: Witness Printer took 2.41ms. Allocated memory is still 117.4MB. Free memory is still 57.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-19 09:55:59,880 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.51ms. Allocated memory is still 83.9MB. Free memory is still 61.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 506.72ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 48.7MB in the end (delta: 41.2MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.29ms. Allocated memory is still 117.4MB. Free memory was 48.7MB in the beginning and 46.3MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.44ms. Allocated memory is still 117.4MB. Free memory was 46.3MB in the beginning and 45.0MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 454.78ms. Allocated memory is still 117.4MB. Free memory was 45.0MB in the beginning and 65.6MB in the end (delta: -20.6MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1231.47ms. Allocated memory is still 117.4MB. Free memory was 65.0MB in the beginning and 57.9MB in the end (delta: 7.1MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * Witness Printer took 2.41ms. Allocated memory is still 117.4MB. Free memory is still 57.9MB. 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: 176, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 118, dependent conditional: 0, dependent unconditional: 118, 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: 0.2s, 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: 176, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 118, dependent conditional: 0, dependent unconditional: 118, 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: 1299]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of sscanf at line 1245. Possible FailurePath: [L1229] 0 static int iSet = 4; [L1230] 0 static int iCheck = 1; [L1231] 0 static int a = 0; [L1232] 0 static int b = 0; [L1239] 0 int i, err; [L1240] COND TRUE 0 argc != 1 [L1241] COND FALSE 0 !(argc != 3) [L1249] COND FALSE 0 !(iSet > 100000 || iCheck > 100000) [L1252] 0 pthread_t setPool[iSet]; [L1253] 0 pthread_t checkPool[iCheck]; [L1254] 0 i = 0 VAL [\at(argc, Pre)=3, \at(argv, Pre)={49:50}, a=0, argc=3, b=0, checkPool={6:0}, i=0, iCheck=1, iSet=1, setPool={5:0}] [L1254] COND TRUE 0 i < iSet [L1255] EXPR, FCALL, FORK 0 pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\at(argc, Pre)=3, \at(argv, Pre)={49:50}, \at(param, Pre)={0:0}, a=0, argc=3, b=0, checkPool={6:0}, i=0, iCheck=1, iSet=1, setPool={5:0}] [L1283] 1 a = 1 VAL [\at(param, Pre)={0:0}, a=1, b=0, iCheck=1, iSet=1, param={0:0}] [L1255] EXPR 0 err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) [L1255] COND FALSE 0 !(0 != (err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)))) [L1254] 0 i++ VAL [\at(argc, Pre)=3, \at(argv, Pre)={49:50}, \at(param, Pre)={0:0}, a=1, argc=3, b=0, checkPool={6:0}, err=0, i=1, iCheck=1, iSet=1, param={0:0}, setPool={5:0}] [L1254] COND FALSE 0 !(i < iSet) [L1260] 0 i = 0 VAL [\at(argc, Pre)=3, \at(argv, Pre)={49:50}, \at(param, Pre)={0:0}, a=1, argc=3, b=0, checkPool={6:0}, err=0, i=0, iCheck=1, iSet=1, param={0:0}, setPool={5:0}] [L1260] COND TRUE 0 i < iCheck [L1261-L1262] FCALL, FORK 0 pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0)) VAL [\at(argc, Pre)=3, \at(argv, Pre)={49:50}, \at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, argc=3, b=0, checkPool={6:0}, err=0, i=0, iCheck=1, iSet=1, param={0:0}, setPool={5:0}] [L1292] 2 int la = a; VAL [\at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, b=0, iCheck=1, iSet=1, la=1, param={0:0}, param={0:0}] [L1295] 2 int lb = b; VAL [\at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, b=0, iCheck=1, iSet=1, la=1, lb=0, param={0:0}, param={0:0}] [L1297] COND TRUE 2 ! ((la == 0 && lb == 0) || (la == 1 && lb == -1)) [L1299] 2 reach_error() VAL [\at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, b=0, iCheck=1, iSet=1, la=1, lb=0, param={0:0}, param={0:0}] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: checkThreadThread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 42 locations, 49 edges, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.5s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s 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 [2025-03-19 09:55:59,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/pthread/reorder_5.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0517a9ebb69eeca4ecbb6ac063832eb703719698fb2ee670ca348e2c511f9dfd --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6f23294-m [2025-03-19 09:56:01,589 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-19 09:56:01,660 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf [2025-03-19 09:56:01,664 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-19 09:56:01,664 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-19 09:56:01,708 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-19 09:56:01,709 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-19 09:56:01,709 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-19 09:56:01,709 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-19 09:56:01,709 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-19 09:56:01,709 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-19 09:56:01,709 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-19 09:56:01,709 INFO L153 SettingsManager]: * Use SBE=true [2025-03-19 09:56:01,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-19 09:56:01,710 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-19 09:56:01,710 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-19 09:56:01,710 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-19 09:56:01,710 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-19 09:56:01,710 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-19 09:56:01,710 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-19 09:56:01,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-19 09:56:01,710 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-19 09:56:01,710 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-19 09:56:01,710 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-19 09:56:01,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-19 09:56:01,710 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-19 09:56:01,711 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-19 09:56:01,711 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-03-19 09:56:01,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-19 09:56:01,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-19 09:56:01,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-19 09:56:01,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-19 09:56:01,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-19 09:56:01,711 INFO L153 SettingsManager]: * Refinement strategy for commutativity condition synthesis=FOX [2025-03-19 09:56:01,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-19 09:56:01,711 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-19 09:56:01,711 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-03-19 09:56:01,711 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-19 09:56:01,711 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-19 09:56:01,711 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-03-19 09:56:01,711 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-19 09:56:01,711 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-03-19 09:56:01,711 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-03-19 09:56:01,711 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-03-19 09:56:01,711 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0517a9ebb69eeca4ecbb6ac063832eb703719698fb2ee670ca348e2c511f9dfd 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 [2025-03-19 09:56:01,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-19 09:56:01,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-19 09:56:01,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-19 09:56:01,926 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-19 09:56:01,926 INFO L274 PluginConnector]: CDTParser initialized [2025-03-19 09:56:01,927 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread/reorder_5.i [2025-03-19 09:56:03,139 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/ea6bcadab/89094c75da1340879b718b99b4559f54/FLAG9c1be5440 [2025-03-19 09:56:03,388 INFO L389 CDTParser]: Found 1 translation units. [2025-03-19 09:56:03,389 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_5.i [2025-03-19 09:56:03,407 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/ea6bcadab/89094c75da1340879b718b99b4559f54/FLAG9c1be5440 [2025-03-19 09:56:04,140 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/ea6bcadab/89094c75da1340879b718b99b4559f54 [2025-03-19 09:56:04,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-19 09:56:04,143 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-19 09:56:04,143 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-19 09:56:04,143 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-19 09:56:04,146 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-19 09:56:04,147 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 09:56:04" (1/1) ... [2025-03-19 09:56:04,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba599b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:56:04, skipping insertion in model container [2025-03-19 09:56:04,147 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 09:56:04" (1/1) ... [2025-03-19 09:56:04,167 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-19 09:56:04,480 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_5.i[59755,59768] [2025-03-19 09:56:04,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-19 09:56:04,489 INFO L200 MainTranslator]: Completed pre-run [2025-03-19 09:56:04,564 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/reorder_5.i[59755,59768] [2025-03-19 09:56:04,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-19 09:56:04,617 INFO L204 MainTranslator]: Completed translation [2025-03-19 09:56:04,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:56:04 WrapperNode [2025-03-19 09:56:04,619 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-19 09:56:04,619 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-19 09:56:04,619 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-19 09:56:04,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-19 09:56:04,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:56:04" (1/1) ... [2025-03-19 09:56:04,636 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:56:04" (1/1) ... [2025-03-19 09:56:04,663 INFO L138 Inliner]: procedures = 374, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 108 [2025-03-19 09:56:04,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-19 09:56:04,665 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-19 09:56:04,665 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-19 09:56:04,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-19 09:56:04,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:56:04" (1/1) ... [2025-03-19 09:56:04,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:56:04" (1/1) ... [2025-03-19 09:56:04,677 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:56:04" (1/1) ... [2025-03-19 09:56:04,677 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:56:04" (1/1) ... [2025-03-19 09:56:04,687 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:56:04" (1/1) ... [2025-03-19 09:56:04,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:56:04" (1/1) ... [2025-03-19 09:56:04,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:56:04" (1/1) ... [2025-03-19 09:56:04,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:56:04" (1/1) ... [2025-03-19 09:56:04,691 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:56:04" (1/1) ... [2025-03-19 09:56:04,693 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-19 09:56:04,694 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-03-19 09:56:04,694 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-03-19 09:56:04,694 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-03-19 09:56:04,695 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:56:04" (1/1) ... [2025-03-19 09:56:04,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2025-03-19 09:56:04,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 09:56:04,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2025-03-19 09:56:04,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2025-03-19 09:56:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2025-03-19 09:56:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-19 09:56:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-19 09:56:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-19 09:56:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2025-03-19 09:56:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2025-03-19 09:56:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-19 09:56:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2025-03-19 09:56:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2025-03-19 09:56:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-19 09:56:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2025-03-19 09:56:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2025-03-19 09:56:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-19 09:56:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-19 09:56:04,739 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-19 09:56:04,851 INFO L234 CfgBuilder]: Building ICFG [2025-03-19 09:56:04,852 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-19 09:56:05,007 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-19 09:56:05,007 INFO L283 CfgBuilder]: Performing block encoding [2025-03-19 09:56:05,126 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-19 09:56:05,126 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-19 09:56:05,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 09:56:05 BoogieIcfgContainer [2025-03-19 09:56:05,126 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-03-19 09:56:05,128 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-19 09:56:05,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-19 09:56:05,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-19 09:56:05,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 09:56:04" (1/3) ... [2025-03-19 09:56:05,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e51b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 09:56:05, skipping insertion in model container [2025-03-19 09:56:05,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:56:04" (2/3) ... [2025-03-19 09:56:05,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e51b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 09:56:05, skipping insertion in model container [2025-03-19 09:56:05,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 09:56:05" (3/3) ... [2025-03-19 09:56:05,135 INFO L128 eAbstractionObserver]: Analyzing ICFG reorder_5.i [2025-03-19 09:56:05,145 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-19 09:56:05,146 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG reorder_5.i that has 3 procedures, 27 locations, 29 edges, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-19 09:56:05,147 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-19 09:56:05,207 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-19 09:56:05,238 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-19 09:56:05,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-03-19 09:56:05,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 09:56:05,242 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) [2025-03-19 09:56:05,243 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 [2025-03-19 09:56:05,300 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-03-19 09:56:05,308 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == checkThreadThread1of1ForFork1 ======== [2025-03-19 09:56:05,316 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;@7e58693d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-19 09:56:05,317 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-19 09:56:05,436 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-19 09:56:05,441 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-19 09:56:05,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1030020328, now seen corresponding path program 1 times [2025-03-19 09:56:05,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-19 09:56:05,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73624549] [2025-03-19 09:56:05,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-19 09:56:05,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 09:56:05,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 09:56:05,451 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) [2025-03-19 09:56:05,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-19 09:56:05,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-19 09:56:05,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-19 09:56:05,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 09:56:05,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-19 09:56:05,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-19 09:56:05,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-19 09:56:05,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-19 09:56:05,599 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-19 09:56:05,599 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-19 09:56:05,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73624549] [2025-03-19 09:56:05,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73624549] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-19 09:56:05,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-19 09:56:05,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-19 09:56:05,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97506988] [2025-03-19 09:56:05,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-19 09:56:05,603 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-19 09:56:05,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-19 09:56:05,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-19 09:56:05,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-19 09:56:05,616 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-19 09:56:05,617 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-19 09:56:05,617 INFO L481 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) [2025-03-19 09:56:05,618 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-19 09:56:05,867 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-19 09:56:05,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-19 09:56:06,068 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 09:56:06,068 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-19 09:56:06,069 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-19 09:56:06,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1535768033, now seen corresponding path program 1 times [2025-03-19 09:56:06,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-19 09:56:06,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493551961] [2025-03-19 09:56:06,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-19 09:56:06,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 09:56:06,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 09:56:06,072 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) [2025-03-19 09:56:06,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-19 09:56:06,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-19 09:56:06,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-19 09:56:06,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 09:56:06,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-19 09:56:06,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-19 09:56:06,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-19 09:56:06,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-19 09:56:06,229 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-19 09:56:06,229 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-19 09:56:06,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493551961] [2025-03-19 09:56:06,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493551961] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-19 09:56:06,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-19 09:56:06,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-19 09:56:06,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346380622] [2025-03-19 09:56:06,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-19 09:56:06,230 INFO L557 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-19 09:56:06,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-19 09:56:06,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-19 09:56:06,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-19 09:56:06,231 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-19 09:56:06,231 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-03-19 09:56:06,231 INFO L481 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) [2025-03-19 09:56:06,231 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2025-03-19 09:56:06,231 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-03-19 09:56:06,482 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-19 09:56:06,483 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-19 09:56:06,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-19 09:56:06,683 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 09:56:06,684 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-19 09:56:06,684 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-03-19 09:56:06,684 INFO L85 PathProgramCache]: Analyzing trace with hash -543494046, now seen corresponding path program 1 times [2025-03-19 09:56:06,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-19 09:56:06,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571118719] [2025-03-19 09:56:06,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-19 09:56:06,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 09:56:06,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-03-19 09:56:06,686 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) [2025-03-19 09:56:06,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-19 09:56:06,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-19 09:56:06,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-19 09:56:06,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 09:56:06,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-19 09:56:06,757 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-19 09:56:06,766 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-19 09:56:06,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-19 09:56:06,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-19 09:56:06,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-19 09:56:06,815 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-03-19 09:56:06,815 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-19 09:56:06,816 INFO L791 garLoopResultBuilder]: Registering result UNSAFE for location checkThreadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-19 09:56:06,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-19 09:56:07,021 WARN L461 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-19 09:56:07,027 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-19 09:56:07,028 INFO L320 ceAbstractionStarter]: Result for error location checkThreadThread1of1ForFork1 was UNSAFE (1/2) [2025-03-19 09:56:07,063 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-19 09:56:07,063 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-03-19 09:56:07,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2025-03-19 09:56:07,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 09:56:07 BasicIcfg [2025-03-19 09:56:07,071 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-19 09:56:07,072 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-19 09:56:07,072 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-19 09:56:07,072 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-19 09:56:07,073 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 09:56:05" (3/4) ... [2025-03-19 09:56:07,074 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-19 09:56:07,075 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-19 09:56:07,076 INFO L158 Benchmark]: Toolchain (without parser) took 2932.89ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 88.8MB in the beginning and 140.8MB in the end (delta: -52.0MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. [2025-03-19 09:56:07,076 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-19 09:56:07,076 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.62ms. Allocated memory is still 117.4MB. Free memory was 88.7MB in the beginning and 46.0MB in the end (delta: 42.7MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-19 09:56:07,076 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.30ms. Allocated memory is still 117.4MB. Free memory was 46.0MB in the beginning and 88.1MB in the end (delta: -42.1MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2025-03-19 09:56:07,076 INFO L158 Benchmark]: Boogie Preprocessor took 28.63ms. Allocated memory is still 117.4MB. Free memory was 88.1MB in the beginning and 86.1MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-19 09:56:07,077 INFO L158 Benchmark]: RCFGBuilder took 432.90ms. Allocated memory is still 117.4MB. Free memory was 86.1MB in the beginning and 44.4MB in the end (delta: 41.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-19 09:56:07,077 INFO L158 Benchmark]: TraceAbstraction took 1942.86ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 43.9MB in the beginning and 140.9MB in the end (delta: -96.9MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. [2025-03-19 09:56:07,077 INFO L158 Benchmark]: Witness Printer took 3.16ms. Allocated memory is still 234.9MB. Free memory was 140.9MB in the beginning and 140.8MB in the end (delta: 27.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-19 09:56:07,078 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 117.4MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 475.62ms. Allocated memory is still 117.4MB. Free memory was 88.7MB in the beginning and 46.0MB in the end (delta: 42.7MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.30ms. Allocated memory is still 117.4MB. Free memory was 46.0MB in the beginning and 88.1MB in the end (delta: -42.1MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.63ms. Allocated memory is still 117.4MB. Free memory was 88.1MB in the beginning and 86.1MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 432.90ms. Allocated memory is still 117.4MB. Free memory was 86.1MB in the beginning and 44.4MB in the end (delta: 41.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1942.86ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 43.9MB in the beginning and 140.9MB in the end (delta: -96.9MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. * Witness Printer took 3.16ms. Allocated memory is still 234.9MB. Free memory was 140.9MB in the beginning and 140.8MB in the end (delta: 27.7kB). 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: 246, independent: 66, independent conditional: 0, independent unconditional: 66, dependent: 179, dependent conditional: 0, dependent unconditional: 179, 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: 0.3s, 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: 246, independent: 66, independent conditional: 0, independent unconditional: 66, dependent: 179, dependent conditional: 0, dependent unconditional: 179, 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: 1299]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of sscanf at line 1245. Possible FailurePath: [L1229] 0 static int iSet = 4; [L1230] 0 static int iCheck = 1; [L1231] 0 static int a = 0; [L1232] 0 static int b = 0; [L1239] 0 int i, err; [L1240] COND TRUE 0 argc != 1 [L1241] COND FALSE 0 !(argc != 3) [L1249] COND FALSE 0 !(iSet > 100000 || iCheck > 100000) [L1252] 0 pthread_t setPool[iSet]; [L1253] 0 pthread_t checkPool[iCheck]; [L1254] 0 i = 0 VAL [\at(argc, Pre)=3, \at(argv, Pre)={0:0}, a=0, argc=3, b=0, checkPool={5:0}, i=0, iCheck=1, iSet=1, setPool={21:0}] [L1254] COND TRUE 0 i < iSet [L1255] EXPR, FCALL, FORK 0 pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) VAL [\at(argc, Pre)=3, \at(argv, Pre)={0:0}, \at(param, Pre)={0:0}, a=0, argc=3, b=0, checkPool={5:0}, i=0, iCheck=1, iSet=1, setPool={21:0}] [L1283] 1 a = 1 VAL [\at(param, Pre)={0:0}, a=1, b=0, iCheck=1, iSet=1, param={0:0}] [L1255] EXPR 0 err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)) [L1255] COND FALSE 0 !(0 != (err = pthread_create(&setPool[i], ((void *)0), &setThread, ((void *)0)))) [L1254] 0 i++ VAL [\at(argc, Pre)=3, \at(argv, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, argc=3, b=0, checkPool={5:0}, err=0, i=1, iCheck=1, iSet=1, param={0:0}, setPool={21:0}] [L1254] COND FALSE 0 !(i < iSet) [L1260] 0 i = 0 VAL [\at(argc, Pre)=3, \at(argv, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, argc=3, b=0, checkPool={5:0}, err=0, i=0, iCheck=1, iSet=1, param={0:0}, setPool={21:0}] [L1260] COND TRUE 0 i < iCheck [L1261-L1262] FCALL, FORK 0 pthread_create(&checkPool[i], ((void *)0), &checkThread, ((void *)0)) VAL [\at(argc, Pre)=3, \at(argv, Pre)={0:0}, \at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, argc=3, b=0, checkPool={5:0}, err=0, i=0, iCheck=1, iSet=1, param={0:0}, setPool={21:0}] [L1292] 2 int la = a; VAL [\at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, b=0, iCheck=1, iSet=1, la=1, param={0:0}, param={0:0}] [L1295] 2 int lb = b; VAL [\at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, b=0, iCheck=1, iSet=1, la=1, lb=0, param={0:0}, param={0:0}] [L1297] COND TRUE 2 ! ((la == 0 && lb == 0) || (la == 1 && lb == -1)) [L1299] 2 reach_error() VAL [\at(param, Pre)={0:0}, \at(param, Pre)={0:0}, a=1, b=0, iCheck=1, iSet=1, la=1, lb=0, param={0:0}, param={0:0}] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: checkThreadThread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 42 locations, 49 edges, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.6s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 139 SizeOfPredicates, 4 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-19 09:56:07,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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