./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/mutex_lock_int.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/mutex_lock_int.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8b169d38538f0c8a0181bbf45a50b1cbddb80f9f42a6ac6255edc1f7c35c3dfd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:26:59,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:26:59,595 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:26:59,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:26:59,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:26:59,617 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:26:59,618 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:26:59,619 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:26:59,619 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:26:59,620 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:26:59,620 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:26:59,621 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:26:59,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:26:59,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:26:59,622 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:26:59,623 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:26:59,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:26:59,623 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:26:59,623 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:26:59,623 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:26:59,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:26:59,627 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:26:59,627 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:26:59,628 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:26:59,628 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:26:59,628 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:26:59,628 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:26:59,628 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:26:59,628 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:26:59,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:26:59,629 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:26:59,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:26:59,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:26:59,629 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:26:59,629 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:26:59,629 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:26:59,629 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:26:59,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:26:59,630 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:26:59,630 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:26:59,630 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:26:59,630 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:26:59,631 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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/UAutomizer-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b169d38538f0c8a0181bbf45a50b1cbddb80f9f42a6ac6255edc1f7c35c3dfd [2024-11-16 06:26:59,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:26:59,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:26:59,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:26:59,866 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:26:59,867 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:26:59,868 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/mutex_lock_int.i [2024-11-16 06:27:01,119 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:27:01,269 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:27:01,270 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/mutex_lock_int.i [2024-11-16 06:27:01,276 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2681ae87/480855e13fec46d2b95869030d591c49/FLAGab40e3cd5 [2024-11-16 06:27:01,290 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2681ae87/480855e13fec46d2b95869030d591c49 [2024-11-16 06:27:01,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:27:01,293 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:27:01,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:27:01,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:27:01,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:27:01,299 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:27:01" (1/1) ... [2024-11-16 06:27:01,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16682df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:27:01, skipping insertion in model container [2024-11-16 06:27:01,299 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:27:01" (1/1) ... [2024-11-16 06:27:01,314 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:27:01,444 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/ldv-regression/mutex_lock_int.i[293,306] [2024-11-16 06:27:01,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:27:01,464 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:27:01,472 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/ldv-regression/mutex_lock_int.i[293,306] [2024-11-16 06:27:01,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:27:01,487 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:27:01,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:27:01 WrapperNode [2024-11-16 06:27:01,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:27:01,489 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:27:01,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:27:01,489 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:27:01,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:27:01" (1/1) ... [2024-11-16 06:27:01,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:27:01" (1/1) ... [2024-11-16 06:27:01,512 INFO L138 Inliner]: procedures = 15, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 15 [2024-11-16 06:27:01,513 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:27:01,514 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:27:01,514 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:27:01,514 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:27:01,521 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:27:01" (1/1) ... [2024-11-16 06:27:01,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:27:01" (1/1) ... [2024-11-16 06:27:01,522 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:27:01" (1/1) ... [2024-11-16 06:27:01,531 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-16 06:27:01,531 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:27:01" (1/1) ... [2024-11-16 06:27:01,531 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:27:01" (1/1) ... [2024-11-16 06:27:01,534 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:27:01" (1/1) ... [2024-11-16 06:27:01,534 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:27:01" (1/1) ... [2024-11-16 06:27:01,535 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:27:01" (1/1) ... [2024-11-16 06:27:01,535 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:27:01" (1/1) ... [2024-11-16 06:27:01,536 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:27:01,537 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:27:01,537 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:27:01,537 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:27:01,538 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:27:01" (1/1) ... [2024-11-16 06:27:01,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:27:01,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:27:01,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 06:27:01,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 06:27:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:27:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure err [2024-11-16 06:27:01,609 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2024-11-16 06:27:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:27:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 06:27:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 06:27:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 06:27:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 06:27:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2024-11-16 06:27:01,610 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2024-11-16 06:27:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:27:01,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:27:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 06:27:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 06:27:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 06:27:01,691 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:27:01,693 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:27:01,784 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-16 06:27:01,784 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:27:01,800 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:27:01,801 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:27:01,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:27:01 BoogieIcfgContainer [2024-11-16 06:27:01,801 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:27:01,804 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:27:01,805 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:27:01,808 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:27:01,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:27:01" (1/3) ... [2024-11-16 06:27:01,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467f40ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:27:01, skipping insertion in model container [2024-11-16 06:27:01,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:27:01" (2/3) ... [2024-11-16 06:27:01,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467f40ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:27:01, skipping insertion in model container [2024-11-16 06:27:01,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:27:01" (3/3) ... [2024-11-16 06:27:01,811 INFO L112 eAbstractionObserver]: Analyzing ICFG mutex_lock_int.i [2024-11-16 06:27:01,829 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:27:01,829 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:27:01,889 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:27:01,895 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=PETRI_NET, 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;@76fb4f07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:27:01,896 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:27:01,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-16 06:27:01,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-16 06:27:01,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:27:01,907 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:27:01,907 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errErr0ASSERT_VIOLATIONERROR_FUNCTION === [errErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:27:01,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:27:01,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1373739389, now seen corresponding path program 1 times [2024-11-16 06:27:01,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:27:01,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907982460] [2024-11-16 06:27:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:27:01,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:27:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:27:02,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 06:27:02,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:27:02,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907982460] [2024-11-16 06:27:02,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907982460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:27:02,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:27:02,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 06:27:02,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330614714] [2024-11-16 06:27:02,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:27:02,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:27:02,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:27:02,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:27:02,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:27:02,287 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:27:02,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:27:02,355 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2024-11-16 06:27:02,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:27:02,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-16 06:27:02,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:27:02,361 INFO L225 Difference]: With dead ends: 37 [2024-11-16 06:27:02,361 INFO L226 Difference]: Without dead ends: 15 [2024-11-16 06:27:02,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:27:02,366 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:27:02,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 48 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:27:02,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-16 06:27:02,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-16 06:27:02,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 06:27:02,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2024-11-16 06:27:02,390 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 8 [2024-11-16 06:27:02,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:27:02,390 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2024-11-16 06:27:02,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:27:02,391 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2024-11-16 06:27:02,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-16 06:27:02,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:27:02,391 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:27:02,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:27:02,392 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errErr0ASSERT_VIOLATIONERROR_FUNCTION === [errErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:27:02,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:27:02,392 INFO L85 PathProgramCache]: Analyzing trace with hash -797712708, now seen corresponding path program 1 times [2024-11-16 06:27:02,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:27:02,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815741919] [2024-11-16 06:27:02,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:27:02,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:27:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 06:27:02,410 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 06:27:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 06:27:02,429 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 06:27:02,430 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 06:27:02,431 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location errErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 06:27:02,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:27:02,435 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-16 06:27:02,451 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 06:27:02,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 06:27:02 BoogieIcfgContainer [2024-11-16 06:27:02,456 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 06:27:02,456 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 06:27:02,456 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 06:27:02,457 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 06:27:02,457 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:27:01" (3/4) ... [2024-11-16 06:27:02,457 INFO L137 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-16 06:27:02,494 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 06:27:02,494 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 06:27:02,495 INFO L158 Benchmark]: Toolchain (without parser) took 1201.84ms. Allocated memory is still 159.4MB. Free memory was 89.1MB in the beginning and 86.8MB in the end (delta: 2.3MB). Peak memory consumption was 456.3kB. Max. memory is 16.1GB. [2024-11-16 06:27:02,495 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 117.4MB. Free memory was 78.2MB in the beginning and 78.1MB in the end (delta: 124.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 06:27:02,495 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.20ms. Allocated memory is still 159.4MB. Free memory was 88.9MB in the beginning and 76.9MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-16 06:27:02,496 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.52ms. Allocated memory is still 159.4MB. Free memory was 76.9MB in the beginning and 75.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 06:27:02,496 INFO L158 Benchmark]: Boogie Preprocessor took 23.03ms. Allocated memory is still 159.4MB. Free memory was 75.5MB in the beginning and 74.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 06:27:02,496 INFO L158 Benchmark]: IcfgBuilder took 265.25ms. Allocated memory is still 159.4MB. Free memory was 74.0MB in the beginning and 127.2MB in the end (delta: -53.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-16 06:27:02,497 INFO L158 Benchmark]: TraceAbstraction took 651.74ms. Allocated memory is still 159.4MB. Free memory was 126.7MB in the beginning and 88.9MB in the end (delta: 37.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-11-16 06:27:02,497 INFO L158 Benchmark]: Witness Printer took 37.89ms. Allocated memory is still 159.4MB. Free memory was 88.9MB in the beginning and 86.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 06:27:02,498 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 117.4MB. Free memory was 78.2MB in the beginning and 78.1MB in the end (delta: 124.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.20ms. Allocated memory is still 159.4MB. Free memory was 88.9MB in the beginning and 76.9MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.52ms. Allocated memory is still 159.4MB. Free memory was 76.9MB in the beginning and 75.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.03ms. Allocated memory is still 159.4MB. Free memory was 75.5MB in the beginning and 74.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 265.25ms. Allocated memory is still 159.4MB. Free memory was 74.0MB in the beginning and 127.2MB in the end (delta: -53.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 651.74ms. Allocated memory is still 159.4MB. Free memory was 126.7MB in the beginning and 88.9MB in the end (delta: 37.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Witness Printer took 37.89ms. Allocated memory is still 159.4MB. Free memory was 88.9MB in the beginning and 86.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L32] int m; [L33] m = 0 [L35] CALL mutex_lock(&m) VAL [\old(a)={5:0}] [L20] EXPR \read(*a) VAL [\old(a)={5:0}, a={5:0}] [L20] COND FALSE !(*a == 1) [L21] *a = 1 VAL [\old(a)={5:0}] [L35] RET mutex_lock(&m) VAL [m={5:0}] [L39] CALL mutex_lock(&m) VAL [\old(a)={5:0}] [L20] EXPR \read(*a) VAL [\old(a)={5:0}, a={5:0}] [L20] COND TRUE *a == 1 [L20] CALL err() [L16] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18 IncrementalHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 14 mSDtfsCounter, 18 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-16 06:27:02,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE