./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-theta/unwind1-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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-theta/unwind1-nondet.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 591990a0070f9287f734f2988edce5e1b5a43791c74b5c6b7374ff93ddaa2267 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-13 02:51:00,356 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 02:51:00,413 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-11-13 02:51:00,420 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 02:51:00,421 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 02:51:00,441 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 02:51:00,442 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 02:51:00,442 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 02:51:00,443 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 02:51:00,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 02:51:00,444 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 02:51:00,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 02:51:00,444 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 02:51:00,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 02:51:00,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 02:51:00,445 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 02:51:00,446 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 02:51:00,446 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 02:51:00,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 02:51:00,447 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 02:51:00,447 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 02:51:00,448 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 02:51:00,448 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 02:51:00,448 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 02:51:00,449 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 02:51:00,449 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 02:51:00,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 02:51:00,450 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 02:51:00,450 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 02:51:00,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 02:51:00,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 02:51:00,451 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 02:51:00,451 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 02:51:00,451 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 02:51:00,452 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 02:51:00,452 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-11-13 02:51:00,452 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 02:51:00,453 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 02:51:00,453 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-11-13 02:51:00,453 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-11-13 02:51:00,453 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-11-13 02:51:00,454 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 591990a0070f9287f734f2988edce5e1b5a43791c74b5c6b7374ff93ddaa2267 [2024-11-13 02:51:00,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 02:51:00,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 02:51:00,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 02:51:00,784 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 02:51:00,785 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 02:51:00,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread-theta/unwind1-nondet.i [2024-11-13 02:51:02,208 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 02:51:02,456 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 02:51:02,456 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-nondet.i [2024-11-13 02:51:02,475 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/bdd0f5784/2c0bccd65a7042c288750364fac9b02b/FLAG13395d0c9 [2024-11-13 02:51:02,770 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/bdd0f5784/2c0bccd65a7042c288750364fac9b02b [2024-11-13 02:51:02,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 02:51:02,774 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 02:51:02,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 02:51:02,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 02:51:02,779 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 02:51:02,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:51:02" (1/1) ... [2024-11-13 02:51:02,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@146ac450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:02, skipping insertion in model container [2024-11-13 02:51:02,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:51:02" (1/1) ... [2024-11-13 02:51:02,822 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 02:51:03,156 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-theta/unwind1-nondet.i[33026,33039] [2024-11-13 02:51:03,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 02:51:03,185 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 02:51:03,239 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-theta/unwind1-nondet.i[33026,33039] [2024-11-13 02:51:03,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 02:51:03,279 INFO L204 MainTranslator]: Completed translation [2024-11-13 02:51:03,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:03 WrapperNode [2024-11-13 02:51:03,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 02:51:03,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 02:51:03,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 02:51:03,282 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 02:51:03,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:03" (1/1) ... [2024-11-13 02:51:03,299 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:03" (1/1) ... [2024-11-13 02:51:03,319 INFO L138 Inliner]: procedures = 169, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2024-11-13 02:51:03,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 02:51:03,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 02:51:03,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 02:51:03,321 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 02:51:03,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:03" (1/1) ... [2024-11-13 02:51:03,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:03" (1/1) ... [2024-11-13 02:51:03,330 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:03" (1/1) ... [2024-11-13 02:51:03,330 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:03" (1/1) ... [2024-11-13 02:51:03,334 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:03" (1/1) ... [2024-11-13 02:51:03,337 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:03" (1/1) ... [2024-11-13 02:51:03,338 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:03" (1/1) ... [2024-11-13 02:51:03,339 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:03" (1/1) ... [2024-11-13 02:51:03,341 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 02:51:03,342 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 02:51:03,342 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 02:51:03,342 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 02:51:03,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:03" (1/1) ... [2024-11-13 02:51:03,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 02:51:03,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-11-13 02:51:03,379 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) [2024-11-13 02:51:03,382 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 [2024-11-13 02:51:03,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 02:51:03,431 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-13 02:51:03,432 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-13 02:51:03,432 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-13 02:51:03,432 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-13 02:51:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 02:51:03,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 02:51:03,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 02:51:03,435 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 02:51:03,580 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 02:51:03,582 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 02:51:03,697 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 02:51:03,697 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 02:51:03,806 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 02:51:03,806 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 02:51:03,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:51:03 BoogieIcfgContainer [2024-11-13 02:51:03,807 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 02:51:03,809 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 02:51:03,809 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 02:51:03,816 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 02:51:03,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:51:02" (1/3) ... [2024-11-13 02:51:03,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb8994b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:51:03, skipping insertion in model container [2024-11-13 02:51:03,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:51:03" (2/3) ... [2024-11-13 02:51:03,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fb8994b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:51:03, skipping insertion in model container [2024-11-13 02:51:03,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:51:03" (3/3) ... [2024-11-13 02:51:03,819 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind1-nondet.i [2024-11-13 02:51:03,835 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 02:51:03,835 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-13 02:51:03,835 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 02:51:03,877 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 02:51:03,917 INFO L107 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 02:51:03,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-11-13 02:51:03,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-11-13 02:51:03,919 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) [2024-11-13 02:51:03,920 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 [2024-11-13 02:51:03,947 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-11-13 02:51:03,958 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == f2Thread1of1ForFork1 ======== [2024-11-13 02:51:03,964 INFO L333 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;@7b57e751, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 02:51:03,964 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 02:51:04,375 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 02:51:04,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 02:51:04,380 INFO L85 PathProgramCache]: Analyzing trace with hash -307489905, now seen corresponding path program 1 times [2024-11-13 02:51:04,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 02:51:04,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046471844] [2024-11-13 02:51:04,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 02:51:04,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 02:51:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 02:51:04,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 02:51:04,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 02:51:04,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046471844] [2024-11-13 02:51:04,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046471844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 02:51:04,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 02:51:04,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 02:51:04,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436416651] [2024-11-13 02:51:04,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 02:51:04,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 02:51:04,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 02:51:04,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 02:51:04,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 02:51:04,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 02:51:04,866 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-13 02:51:04,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-13 02:51:04,867 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-13 02:51:04,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 02:51:04,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 02:51:04,953 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 02:51:04,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 02:51:04,953 INFO L85 PathProgramCache]: Analyzing trace with hash -942283089, now seen corresponding path program 1 times [2024-11-13 02:51:04,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 02:51:04,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900526039] [2024-11-13 02:51:04,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 02:51:04,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 02:51:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 02:51:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 02:51:05,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 02:51:05,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900526039] [2024-11-13 02:51:05,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900526039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 02:51:05,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210360044] [2024-11-13 02:51:05,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 02:51:05,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 02:51:05,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-11-13 02:51:05,104 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) [2024-11-13 02:51:05,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 02:51:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 02:51:05,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 02:51:05,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 02:51:05,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 02:51:05,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 02:51:05,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 02:51:05,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210360044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 02:51:05,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 02:51:05,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-11-13 02:51:05,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610494529] [2024-11-13 02:51:05,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 02:51:05,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 02:51:05,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 02:51:05,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 02:51:05,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 02:51:05,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 02:51:05,313 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-11-13 02:51:05,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2024-11-13 02:51:05,313 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-11-13 02:51:05,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-11-13 02:51:05,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 02:51:05,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 02:51:05,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 02:51:05,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-13 02:51:05,876 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 02:51:05,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 02:51:05,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1684815567, now seen corresponding path program 1 times [2024-11-13 02:51:05,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 02:51:05,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478889381] [2024-11-13 02:51:05,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 02:51:05,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 02:51:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 02:51:05,890 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 02:51:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 02:51:05,924 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 02:51:05,925 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 02:51:05,926 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 02:51:05,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 02:51:05,936 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-13 02:51:05,938 INFO L317 ceAbstractionStarter]: Result for error location f2Thread1of1ForFork1 was UNSAFE (1/2) [2024-11-13 02:51:05,978 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 02:51:05,978 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 02:51:05,998 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 [2024-11-13 02:51:05,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:51:05 BasicIcfg [2024-11-13 02:51:05,999 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 02:51:06,000 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 02:51:06,000 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 02:51:06,000 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 02:51:06,000 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:51:03" (3/4) ... [2024-11-13 02:51:06,001 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 02:51:06,054 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.graphml [2024-11-13 02:51:06,057 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 02:51:06,057 INFO L158 Benchmark]: Toolchain (without parser) took 3283.48ms. Allocated memory is still 165.7MB. Free memory was 126.0MB in the beginning and 113.9MB in the end (delta: 12.1MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2024-11-13 02:51:06,057 INFO L158 Benchmark]: CDTParser took 3.60ms. Allocated memory is still 117.4MB. Free memory is still 90.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 02:51:06,058 INFO L158 Benchmark]: CACSL2BoogieTranslator took 505.92ms. Allocated memory is still 165.7MB. Free memory was 126.0MB in the beginning and 102.9MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-13 02:51:06,058 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.77ms. Allocated memory is still 165.7MB. Free memory was 102.9MB in the beginning and 101.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 02:51:06,058 INFO L158 Benchmark]: Boogie Preprocessor took 20.75ms. Allocated memory is still 165.7MB. Free memory was 101.6MB in the beginning and 100.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-13 02:51:06,059 INFO L158 Benchmark]: RCFGBuilder took 465.02ms. Allocated memory is still 165.7MB. Free memory was 100.1MB in the beginning and 79.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-13 02:51:06,059 INFO L158 Benchmark]: TraceAbstraction took 2190.24ms. Allocated memory is still 165.7MB. Free memory was 78.5MB in the beginning and 118.0MB in the end (delta: -39.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 02:51:06,063 INFO L158 Benchmark]: Witness Printer took 56.92ms. Allocated memory is still 165.7MB. Free memory was 116.9MB in the beginning and 113.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-13 02:51:06,065 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.60ms. Allocated memory is still 117.4MB. Free memory is still 90.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 505.92ms. Allocated memory is still 165.7MB. Free memory was 126.0MB in the beginning and 102.9MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.77ms. Allocated memory is still 165.7MB. Free memory was 102.9MB in the beginning and 101.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.75ms. Allocated memory is still 165.7MB. Free memory was 101.6MB in the beginning and 100.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 465.02ms. Allocated memory is still 165.7MB. Free memory was 100.1MB in the beginning and 79.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2190.24ms. Allocated memory is still 165.7MB. Free memory was 78.5MB in the beginning and 118.0MB in the end (delta: -39.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 56.92ms. Allocated memory is still 165.7MB. Free memory was 116.9MB in the beginning and 113.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. 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: 295, independent: 257, independent conditional: 83, independent unconditional: 174, dependent: 38, dependent conditional: 32, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 264, independent: 257, independent conditional: 83, independent unconditional: 174, dependent: 7, dependent conditional: 1, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 264, independent: 257, independent conditional: 83, independent unconditional: 174, dependent: 7, dependent conditional: 1, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 266, independent: 257, independent conditional: 83, independent unconditional: 174, dependent: 9, dependent conditional: 3, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 266, independent: 257, independent conditional: 0, independent unconditional: 257, dependent: 9, dependent conditional: 2, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 266, independent: 257, independent conditional: 0, independent unconditional: 257, dependent: 9, dependent conditional: 2, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 182, independent: 174, independent conditional: 0, independent unconditional: 174, dependent: 8, dependent conditional: 2, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 182, independent: 173, independent conditional: 0, independent unconditional: 173, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 9, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 8, dependent conditional: 2, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 9, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 8, dependent conditional: 2, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 525, independent: 144, independent conditional: 0, independent unconditional: 144, dependent: 380, dependent conditional: 86, dependent unconditional: 294, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 266, independent: 83, independent conditional: 0, independent unconditional: 83, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 182, unknown conditional: 2, unknown unconditional: 180] , Statistics on independence cache: Total cache size (in pairs): 182, Positive cache size: 174, Positive conditional cache size: 0, Positive unconditional cache size: 174, Negative cache size: 8, Negative conditional cache size: 2, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 84, Maximal queried relation: 2, Independence queries for same thread: 31, Persistent sets #1 benchmarks: Persistent set computation time: 0.5s, Number of persistent set computation: 29, Number of trivial persistent sets: 26, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 180, independent: 174, independent conditional: 0, independent unconditional: 174, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 295, independent: 257, independent conditional: 83, independent unconditional: 174, dependent: 38, dependent conditional: 32, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 264, independent: 257, independent conditional: 83, independent unconditional: 174, dependent: 7, dependent conditional: 1, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 264, independent: 257, independent conditional: 83, independent unconditional: 174, dependent: 7, dependent conditional: 1, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 266, independent: 257, independent conditional: 83, independent unconditional: 174, dependent: 9, dependent conditional: 3, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 266, independent: 257, independent conditional: 0, independent unconditional: 257, dependent: 9, dependent conditional: 2, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 266, independent: 257, independent conditional: 0, independent unconditional: 257, dependent: 9, dependent conditional: 2, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 182, independent: 174, independent conditional: 0, independent unconditional: 174, dependent: 8, dependent conditional: 2, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 182, independent: 173, independent conditional: 0, independent unconditional: 173, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 9, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 8, dependent conditional: 2, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 9, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 8, dependent conditional: 2, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 525, independent: 144, independent conditional: 0, independent unconditional: 144, dependent: 380, dependent conditional: 86, dependent unconditional: 294, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 266, independent: 83, independent conditional: 0, independent unconditional: 83, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 182, unknown conditional: 2, unknown unconditional: 180] , Statistics on independence cache: Total cache size (in pairs): 182, Positive cache size: 174, Positive conditional cache size: 0, Positive unconditional cache size: 174, Negative cache size: 8, Negative conditional cache size: 2, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 84, Maximal queried relation: 2, Independence queries for same thread: 31 - CounterExampleResult [Line: 753]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L772] 0 _N = __VERIFIER_nondet_int() [L773] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L773] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L774] 0 pthread_t t1, t2; [L775] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [\old(arg)={0:0}, _N=0, limit=0, t1=-1] [L757] COND FALSE 1 !(__VERIFIER_nondet_int()) [L760] 1 limit = _N + 1 VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=1] [L762] 1 return 0; [L776] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [\old(arg)={0:0}, \result={0:0}, _N=0, arg={0:0}, limit=1, t1=-1, t2=0] [L765] 2 int i, bound; [L766] 2 bound = limit [L767] 2 i = 0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, _N=0, arg={0:0}, arg={0:0}, bound=1, i=0, limit=1] [L777] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\old(arg)={0:0}, \result={0:0}, _N=0, arg={0:0}, limit=1, t1=-1, t2=0] [L767] COND TRUE 2 i < bound [L767] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, _N=0, arg={0:0}, arg={0:0}, bound=1, i=1, limit=1] [L767] COND FALSE 2 !(i < bound) [L768] CALL 2 __VERIFIER_assert(i <= _N) [L753] COND TRUE 2 !expression VAL [\old(arg)={0:0}, \old(expression)=0, \result={0:0}, _N=0, arg={0:0}, expression=0, limit=1] [L753] 2 reach_error() VAL [\old(arg)={0:0}, \old(expression)=0, \result={0:0}, _N=0, arg={0:0}, expression=0, limit=1] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: f2Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 37 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.9s, 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, 0.5s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 141 SizeOfPredicates, 6 NumberOfNonLiveVariables, 89 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-13 02:51:06,098 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE