/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/NewStatesSleepPersistent.epf --traceabstraction.dfs.order.used.in.por PSEUDO_LOCKSTEP -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 17:04:39,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 17:04:39,835 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleepPersistent.epf [2023-11-17 17:04:39,842 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-17 17:04:39,842 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-17 17:04:39,868 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 17:04:39,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-17 17:04:39,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-17 17:04:39,870 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 17:04:39,874 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 17:04:39,875 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 17:04:39,875 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 17:04:39,876 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 17:04:39,877 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 17:04:39,877 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 17:04:39,877 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 17:04:39,877 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 17:04:39,878 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 17:04:39,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 17:04:39,878 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 17:04:39,878 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 17:04:39,879 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 17:04:39,879 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 17:04:39,879 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 17:04:39,879 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 17:04:39,880 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 17:04:39,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 17:04:39,880 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 17:04:39,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 17:04:39,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 17:04:39,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 17:04:39,882 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 17:04:39,882 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 17:04:39,882 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 17:04:39,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 17:04:39,882 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-17 17:04:39,882 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-17 17:04:39,882 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-17 17:04:39,883 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-17 17:04:39,883 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES [2023-11-17 17:04:39,883 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: DFS Order used in POR -> PSEUDO_LOCKSTEP [2023-11-17 17:04:40,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 17:04:40,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 17:04:40,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 17:04:40,163 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 17:04:40,163 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 17:04:40,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i [2023-11-17 17:04:41,445 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 17:04:41,662 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 17:04:41,662 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i [2023-11-17 17:04:41,678 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55e600ed6/a03d0b9c77db44cc92273084dbc3301c/FLAG6e4c299e3 [2023-11-17 17:04:41,692 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55e600ed6/a03d0b9c77db44cc92273084dbc3301c [2023-11-17 17:04:41,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 17:04:41,696 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 17:04:41,697 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 17:04:41,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 17:04:41,702 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 17:04:41,703 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 05:04:41" (1/1) ... [2023-11-17 17:04:41,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d3a1df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:04:41, skipping insertion in model container [2023-11-17 17:04:41,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 05:04:41" (1/1) ... [2023-11-17 17:04:41,751 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 17:04:42,077 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i[31309,31322] [2023-11-17 17:04:42,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 17:04:42,101 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 17:04:42,146 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-1.i[31309,31322] [2023-11-17 17:04:42,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 17:04:42,172 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 17:04:42,173 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 17:04:42,179 INFO L206 MainTranslator]: Completed translation [2023-11-17 17:04:42,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:04:42 WrapperNode [2023-11-17 17:04:42,180 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 17:04:42,181 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 17:04:42,181 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 17:04:42,181 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 17:04:42,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:04:42" (1/1) ... [2023-11-17 17:04:42,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:04:42" (1/1) ... [2023-11-17 17:04:42,227 INFO L138 Inliner]: procedures = 179, calls = 49, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 189 [2023-11-17 17:04:42,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 17:04:42,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 17:04:42,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 17:04:42,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 17:04:42,235 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:04:42" (1/1) ... [2023-11-17 17:04:42,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:04:42" (1/1) ... [2023-11-17 17:04:42,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:04:42" (1/1) ... [2023-11-17 17:04:42,249 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:04:42" (1/1) ... [2023-11-17 17:04:42,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:04:42" (1/1) ... [2023-11-17 17:04:42,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:04:42" (1/1) ... [2023-11-17 17:04:42,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:04:42" (1/1) ... [2023-11-17 17:04:42,263 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:04:42" (1/1) ... [2023-11-17 17:04:42,266 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 17:04:42,267 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 17:04:42,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 17:04:42,267 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 17:04:42,268 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:04:42" (1/1) ... [2023-11-17 17:04:42,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 17:04:42,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 17:04:42,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 17:04:42,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 17:04:42,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 17:04:42,324 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-17 17:04:42,324 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-17 17:04:42,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 17:04:42,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 17:04:42,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 17:04:42,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 17:04:42,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 17:04:42,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 17:04:42,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 17:04:42,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 17:04:42,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 17:04:42,327 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 17:04:42,439 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 17:04:42,441 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 17:04:42,699 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 17:04:42,916 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 17:04:42,916 INFO L307 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-17 17:04:42,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 05:04:42 BoogieIcfgContainer [2023-11-17 17:04:42,918 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 17:04:42,920 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 17:04:42,920 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 17:04:42,924 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 17:04:42,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 05:04:41" (1/3) ... [2023-11-17 17:04:42,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e2e175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 05:04:42, skipping insertion in model container [2023-11-17 17:04:42,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 05:04:42" (2/3) ... [2023-11-17 17:04:42,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e2e175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 05:04:42, skipping insertion in model container [2023-11-17 17:04:42,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 05:04:42" (3/3) ... [2023-11-17 17:04:42,927 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longest-1.i [2023-11-17 17:04:42,935 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-17 17:04:42,941 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 17:04:42,942 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 17:04:42,942 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 17:04:43,025 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 17:04:43,076 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 17:04:43,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-17 17:04:43,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 17:04:43,079 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-17 17:04:43,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-17 17:04:43,114 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-17 17:04:43,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2023-11-17 17:04:43,140 INFO L357 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, mHoare=true, 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;@7752c21f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 17:04:43,151 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-17 17:04:43,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-17 17:04:43,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 17:04:43,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1467320802, now seen corresponding path program 1 times [2023-11-17 17:04:43,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 17:04:43,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159592691] [2023-11-17 17:04:43,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 17:04:43,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 17:04:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 17:04:43,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 17:04:43,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 17:04:43,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159592691] [2023-11-17 17:04:43,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159592691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 17:04:43,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 17:04:43,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 17:04:43,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176709527] [2023-11-17 17:04:43,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 17:04:43,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 17:04:43,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 17:04:43,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 17:04:43,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 17:04:43,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 17:04:43,948 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 17:04:43,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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) [2023-11-17 17:04:43,950 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 17:04:44,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 17:04:44,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 17:04:44,010 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-17 17:04:44,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 17:04:44,011 INFO L85 PathProgramCache]: Analyzing trace with hash 731104762, now seen corresponding path program 1 times [2023-11-17 17:04:44,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 17:04:44,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061053854] [2023-11-17 17:04:44,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 17:04:44,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 17:04:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 17:04:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 17:04:44,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 17:04:44,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061053854] [2023-11-17 17:04:44,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061053854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 17:04:44,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 17:04:44,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 17:04:44,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664196745] [2023-11-17 17:04:44,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 17:04:44,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 17:04:44,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 17:04:44,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 17:04:44,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-17 17:04:44,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 17:04:44,340 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 17:04:44,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 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) [2023-11-17 17:04:44,340 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 17:04:44,340 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 17:04:44,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 17:04:44,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 17:04:44,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 17:04:44,530 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-17 17:04:44,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 17:04:44,530 INFO L85 PathProgramCache]: Analyzing trace with hash -896941519, now seen corresponding path program 1 times [2023-11-17 17:04:44,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 17:04:44,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236365396] [2023-11-17 17:04:44,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 17:04:44,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 17:04:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 17:04:44,608 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 17:04:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 17:04:44,696 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 17:04:44,696 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 17:04:44,697 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-17 17:04:44,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 17:04:44,709 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-17 17:04:44,711 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was UNSAFE (1/2) [2023-11-17 17:04:44,714 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 17:04:44,714 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 17:04:44,791 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre15 could not be translated [2023-11-17 17:04:44,793 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch14 could not be translated [2023-11-17 17:04:44,794 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch14 could not be translated [2023-11-17 17:04:44,795 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch14 could not be translated [2023-11-17 17:04:44,795 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch14 could not be translated [2023-11-17 17:04:44,796 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet12 could not be translated [2023-11-17 17:04:44,796 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre15 could not be translated [2023-11-17 17:04:44,798 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret7 could not be translated [2023-11-17 17:04:44,799 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated [2023-11-17 17:04:44,799 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated [2023-11-17 17:04:44,800 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret13 could not be translated [2023-11-17 17:04:44,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 05:04:44 BasicIcfg [2023-11-17 17:04:44,811 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 17:04:44,812 INFO L158 Benchmark]: Toolchain (without parser) took 3115.35ms. Allocated memory is still 262.1MB. Free memory was 211.3MB in the beginning and 106.0MB in the end (delta: 105.3MB). Peak memory consumption was 106.3MB. Max. memory is 8.0GB. [2023-11-17 17:04:44,812 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 197.1MB. Free memory is still 149.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 17:04:44,812 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.82ms. Allocated memory is still 262.1MB. Free memory was 210.8MB in the beginning and 190.3MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-11-17 17:04:44,813 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.49ms. Allocated memory is still 262.1MB. Free memory was 190.3MB in the beginning and 187.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 17:04:44,813 INFO L158 Benchmark]: Boogie Preprocessor took 38.12ms. Allocated memory is still 262.1MB. Free memory was 187.7MB in the beginning and 185.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 17:04:44,813 INFO L158 Benchmark]: RCFGBuilder took 651.49ms. Allocated memory is still 262.1MB. Free memory was 185.6MB in the beginning and 143.7MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. [2023-11-17 17:04:44,814 INFO L158 Benchmark]: TraceAbstraction took 1890.80ms. Allocated memory is still 262.1MB. Free memory was 143.1MB in the beginning and 106.0MB in the end (delta: 37.1MB). Peak memory consumption was 38.2MB. Max. memory is 8.0GB. [2023-11-17 17:04:44,816 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 197.1MB. Free memory is still 149.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 482.82ms. Allocated memory is still 262.1MB. Free memory was 210.8MB in the beginning and 190.3MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.49ms. Allocated memory is still 262.1MB. Free memory was 190.3MB in the beginning and 187.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.12ms. Allocated memory is still 262.1MB. Free memory was 187.7MB in the beginning and 185.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 651.49ms. Allocated memory is still 262.1MB. Free memory was 185.6MB in the beginning and 143.7MB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 8.0GB. * TraceAbstraction took 1890.80ms. Allocated memory is still 262.1MB. Free memory was 143.1MB in the beginning and 106.0MB in the end (delta: 37.1MB). Peak memory consumption was 38.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre15 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre15 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret13 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1142, independent: 1070, independent conditional: 120, independent unconditional: 950, dependent: 72, dependent conditional: 55, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1090, independent: 1070, independent conditional: 120, independent unconditional: 950, dependent: 20, dependent conditional: 3, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1090, independent: 1070, independent conditional: 120, independent unconditional: 950, dependent: 20, dependent conditional: 3, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1093, independent: 1070, independent conditional: 0, independent unconditional: 1070, dependent: 23, dependent conditional: 3, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1093, independent: 1070, independent conditional: 0, independent unconditional: 1070, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1093, independent: 1070, independent conditional: 0, independent unconditional: 1070, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 967, independent: 950, independent conditional: 0, independent unconditional: 950, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 967, independent: 940, independent conditional: 0, independent unconditional: 940, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 27, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 27, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 174, independent: 93, independent conditional: 0, independent unconditional: 93, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 1093, independent: 120, independent conditional: 0, independent unconditional: 120, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 967, unknown conditional: 0, unknown unconditional: 967] , Statistics on independence cache: Total cache size (in pairs): 967, Positive cache size: 950, Positive conditional cache size: 0, Positive unconditional cache size: 950, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 3, Maximal queried relation: 2, Independence queries for same thread: 52 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.2s, Number of persistent set computation: 95, Number of trivial persistent sets: 79, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 967, independent: 950, independent conditional: 0, independent unconditional: 950, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1142, independent: 1070, independent conditional: 120, independent unconditional: 950, dependent: 72, dependent conditional: 55, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1090, independent: 1070, independent conditional: 120, independent unconditional: 950, dependent: 20, dependent conditional: 3, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1090, independent: 1070, independent conditional: 120, independent unconditional: 950, dependent: 20, dependent conditional: 3, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1093, independent: 1070, independent conditional: 0, independent unconditional: 1070, dependent: 23, dependent conditional: 3, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1093, independent: 1070, independent conditional: 0, independent unconditional: 1070, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1093, independent: 1070, independent conditional: 0, independent unconditional: 1070, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 967, independent: 950, independent conditional: 0, independent unconditional: 950, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 967, independent: 940, independent conditional: 0, independent unconditional: 940, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 27, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 27, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 174, independent: 93, independent conditional: 0, independent unconditional: 93, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 1093, independent: 120, independent conditional: 0, independent unconditional: 120, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 967, unknown conditional: 0, unknown unconditional: 967] , Statistics on independence cache: Total cache size (in pairs): 967, Positive cache size: 950, Positive conditional cache size: 0, Positive unconditional cache size: 950, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 3, Maximal queried relation: 2, Independence queries for same thread: 52 - CounterExampleResult [Line: 763]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L716] 0 int memory[(2*960+1)]; [L717] 0 int next_alloc_idx = 1; VAL [next_alloc_idx=1] [L718] 0 int m = 0; VAL [m={3:0}, next_alloc_idx=1] [L719] 0 int top; VAL [m={3:0}, next_alloc_idx=1, top={4:0}] [L773] 0 int m2 = 0; VAL [m2={5:0}, m={3:0}, next_alloc_idx=1, top={4:0}] [L774] 0 int state = 0; VAL [m2={5:0}, m={3:0}, next_alloc_idx=1, state=0, top={4:0}] [L792] 0 pthread_t t; VAL [m2={5:0}, m={3:0}, next_alloc_idx=1, state=0, t={8:0}, top={4:0}] [L793] COND TRUE 0 1 VAL [m2={5:0}, m={3:0}, next_alloc_idx=1, state=0, t={8:0}, top={4:0}] [L793] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m2={5:0}, m={3:0}, next_alloc_idx=1, state=0, t={8:0}, top={4:0}] [L777] CALL 1 __VERIFIER_atomic_acquire(&m2) [L693] EXPR 1 \read(*m) [L693] CALL 1 assume_abort_if_not(*m==0) [L4] COND FALSE 1 !(!cond) [L693] RET 1 assume_abort_if_not(*m==0) [L694] 1 *m = 1 [L777] RET 1 __VERIFIER_atomic_acquire(&m2) [L780] 1 case 0: VAL [arg={0:0}, arg={0:0}, m2={5:0}, m={3:0}, next_alloc_idx=1, state=0, top={4:0}] [L780] 1 case 0: [L781] CALL 1 EBStack_init() [L793] COND TRUE 0 1 VAL [m2={5:0}, m={3:0}, next_alloc_idx=1, state=0, t={8:0}, top={4:0}] [L734] 1 top = 0 VAL [m2={5:0}, m={3:0}, next_alloc_idx=1, state=0, top={4:0}] [L781] RET 1 EBStack_init() [L782] 1 state = 1 VAL [arg={0:0}, arg={0:0}, m2={5:0}, m={3:0}, next_alloc_idx=1, state=1, top={4:0}] [L783] 1 case 1: VAL [arg={0:0}, arg={0:0}, m2={5:0}, m={3:0}, next_alloc_idx=1, state=1, top={4:0}] [L783] 1 case 1: VAL [arg={0:0}, arg={0:0}, m2={5:0}, m={3:0}, next_alloc_idx=1, state=1, top={4:0}] [L784] CALL 1 __VERIFIER_atomic_release(&m2) [L698] EXPR 1 \read(*m) [L698] CALL 1 assume_abort_if_not(*m==1) [L4] COND FALSE 1 !(!cond) [L698] RET 1 assume_abort_if_not(*m==1) [L699] 1 *m = 0 [L784] RET 1 __VERIFIER_atomic_release(&m2) [L785] CALL 1 push_loop() [L766] 1 int r = -1; VAL [m2={5:0}, m={3:0}, next_alloc_idx=1, r=-1, state=1, top={4:0}] [L767] 1 int arg = __VERIFIER_nondet_int(); VAL [arg=0, m2={5:0}, m={3:0}, next_alloc_idx=1, r=-1, state=1, top={4:0}] [L768] COND TRUE 1 1 [L769] CALL, EXPR 1 push(arg) [L743] 1 int oldTop = -1, newTop = -1, casret = -1; VAL [\old(d)=0, d=0, m2={5:0}, m={3:0}, newTop=-1, next_alloc_idx=1, oldTop=-1, state=1, top={4:0}] [L793] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m2={5:0}, m={3:0}, next_alloc_idx=1, state=1, t={8:0}, top={4:0}] [L743] 1 int oldTop = -1, newTop = -1, casret = -1; VAL [\old(d)=0, casret={6:0}, d=0, m2={5:0}, m={3:0}, newTop=-1, next_alloc_idx=1, oldTop=-1, state=1, top={4:0}] [L744] CALL, EXPR 1 index_malloc() [L721] 1 int curr_alloc_idx = -1; VAL [curr_alloc_idx=-1, m2={5:0}, m={3:0}, next_alloc_idx=1, state=1, top={4:0}] [L722] CALL 1 __VERIFIER_atomic_acquire(&m) [L693] EXPR 1 \read(*m) [L693] CALL 1 assume_abort_if_not(*m==0) [L4] COND FALSE 1 !(!cond) [L693] RET 1 assume_abort_if_not(*m==0) [L694] 1 *m = 1 [L722] RET 1 __VERIFIER_atomic_acquire(&m) [L723] COND FALSE 1 !(next_alloc_idx+2-1 > (2*960+1)) VAL [curr_alloc_idx=-1, m2={5:0}, m={3:0}, next_alloc_idx=1, state=1, top={4:0}] [L727] 1 curr_alloc_idx = next_alloc_idx VAL [curr_alloc_idx=1, m2={5:0}, m={3:0}, next_alloc_idx=1, state=1, top={4:0}] [L728] 1 next_alloc_idx += 2 VAL [curr_alloc_idx=1, m2={5:0}, m={3:0}, next_alloc_idx=3, state=1, top={4:0}] [L729] CALL 1 __VERIFIER_atomic_release(&m) [L698] EXPR 1 \read(*m) [L698] CALL 1 assume_abort_if_not(*m==1) [L4] COND FALSE 1 !(!cond) [L698] RET 1 assume_abort_if_not(*m==1) [L699] 1 *m = 0 [L729] RET 1 __VERIFIER_atomic_release(&m) [L731] 1 return curr_alloc_idx; VAL [\result=1, curr_alloc_idx=1, m2={5:0}, m={3:0}, next_alloc_idx=3, state=1, top={4:0}] [L744] RET, EXPR 1 index_malloc() [L744] 1 newTop = index_malloc() VAL [\old(d)=0, casret={6:0}, d=0, m2={5:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={4:0}] [L745] COND FALSE 1 !(newTop == 0) VAL [\old(d)=0, casret={6:0}, d=0, m2={5:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={4:0}] [L748] 1 memory[newTop+0] = d VAL [\old(d)=0, casret={6:0}, d=0, m2={5:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={4:0}] [L749] COND TRUE 1 1 VAL [\old(d)=0, casret={6:0}, d=0, m2={5:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={4:0}] [L751] EXPR 1 \read(top) [L751] 1 oldTop = top [L753] 1 memory[newTop+1] = oldTop VAL [\old(d)=0, casret={6:0}, d=0, m2={5:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={4:0}] [L754] CALL 1 __VERIFIER_atomic_CAS(&top,oldTop,newTop,&casret) [L707] EXPR 1 \read(*v) [L707] COND TRUE 1 *v == e [L709] 1 *v = u [L709] 1 *r = 1 [L754] RET 1 __VERIFIER_atomic_CAS(&top,oldTop,newTop,&casret) [L755] EXPR 1 \read(casret) VAL [\old(d)=0, casret={6:0}, d=0, m2={5:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={4:0}] [L755] COND TRUE 1 casret==1 VAL [\old(d)=0, casret={6:0}, d=0, m2={5:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={4:0}] [L756] 1 return 1; VAL [\old(d)=0, \result=1, casret={6:0}, d=0, m2={5:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={4:0}] [L743] 1 int oldTop = -1, newTop = -1, casret = -1; VAL [\old(d)=0, \result=1, casret={6:0}, d=0, m2={5:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={4:0}] [L756] 1 return 1; VAL [\old(d)=0, \result=1, d=0, m2={5:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={4:0}] [L769] RET, EXPR 1 push(arg) [L769] 1 r = push(arg) VAL [arg=0, m2={5:0}, m={3:0}, next_alloc_idx=3, r=1, state=1, top={4:0}] [L770] CALL 1 __VERIFIER_atomic_assert(r) [L763] EXPR 1 !r || !isEmpty() [L763] CALL, EXPR 1 isEmpty() [L737] EXPR 1 \read(top) [L737] COND FALSE 1 !(top == 0) [L740] 1 return 0; [L763] RET, EXPR 1 isEmpty() [L763] EXPR 1 !r || !isEmpty() [L763] COND TRUE 1 !(!(!r || !isEmpty())) [L763] 1 reach_error() VAL [\old(r)=1, m2={5:0}, m={3:0}, next_alloc_idx=3, r=1, state=1, top={4:0}] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1Thread1of1ForFork0 with 1 thread instances CFG has 3 procedures, 177 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.5s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 253 NumberOfCodeBlocks, 253 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 397 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 10/10 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! [2023-11-17 17:04:44,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2023-11-17 17:04:45,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...