./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/25_stack_longest-2.i --full-output --preprocessor.use.memory.slicer true --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d2ba6107 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/25_stack_longest-2.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cabdc6d1ed2adbc421c41fcb971b1cf28c20678c065a4de58d9cc1e3842298d4 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-d2ba610-m [2023-11-21 17:42:35,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 17:42:35,580 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2023-11-21 17:42:35,584 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 17:42:35,585 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 17:42:35,613 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 17:42:35,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 17:42:35,614 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 17:42:35,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 17:42:35,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 17:42:35,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 17:42:35,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 17:42:35,619 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 17:42:35,620 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 17:42:35,620 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 17:42:35,620 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 17:42:35,620 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 17:42:35,621 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 17:42:35,621 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 17:42:35,621 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 17:42:35,621 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 17:42:35,622 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 17:42:35,622 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 17:42:35,622 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 17:42:35,622 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 17:42:35,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 17:42:35,623 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 17:42:35,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 17:42:35,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 17:42:35,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 17:42:35,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 17:42:35,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 17:42:35,625 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 17:42:35,625 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 17:42:35,625 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-11-21 17:42:35,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 17:42:35,626 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 17:42:35,626 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-21 17:42:35,626 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 17:42:35,626 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-21 17:42:35,626 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-21 17:42:35,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cabdc6d1ed2adbc421c41fcb971b1cf28c20678c065a4de58d9cc1e3842298d4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-21 17:42:35,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 17:42:35,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 17:42:35,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 17:42:35,848 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 17:42:35,849 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 17:42:35,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-ext/25_stack_longest-2.i [2023-11-21 17:42:36,930 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 17:42:37,127 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 17:42:37,128 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longest-2.i [2023-11-21 17:42:37,143 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/43f3f9428/dc82903297ef4370bfb527e5395afc41/FLAGa1d90ea63 [2023-11-21 17:42:37,152 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/43f3f9428/dc82903297ef4370bfb527e5395afc41 [2023-11-21 17:42:37,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 17:42:37,162 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 17:42:37,163 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 17:42:37,166 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 17:42:37,169 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 17:42:37,171 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:42:37" (1/1) ... [2023-11-21 17:42:37,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405af3d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:42:37, skipping insertion in model container [2023-11-21 17:42:37,175 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:42:37" (1/1) ... [2023-11-21 17:42:37,218 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 17:42:37,487 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/25_stack_longest-2.i[31183,31196] [2023-11-21 17:42:37,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 17:42:37,508 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 17:42:37,557 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/25_stack_longest-2.i[31183,31196] [2023-11-21 17:42:37,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 17:42:37,590 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 17:42:37,590 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 17:42:37,596 INFO L206 MainTranslator]: Completed translation [2023-11-21 17:42:37,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:42:37 WrapperNode [2023-11-21 17:42:37,597 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 17:42:37,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 17:42:37,599 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 17:42:37,599 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 17:42:37,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:42:37" (1/1) ... [2023-11-21 17:42:37,629 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:42:37" (1/1) ... [2023-11-21 17:42:37,690 INFO L138 Inliner]: procedures = 179, calls = 36, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 174 [2023-11-21 17:42:37,690 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 17:42:37,691 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 17:42:37,691 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 17:42:37,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 17:42:37,708 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:42:37" (1/1) ... [2023-11-21 17:42:37,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:42:37" (1/1) ... [2023-11-21 17:42:37,712 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:42:37" (1/1) ... [2023-11-21 17:42:37,722 INFO L193 HeapSplitter]: Split 19 memory accesses to 3 slices as follows [2, 1, 16] [2023-11-21 17:42:37,723 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:42:37" (1/1) ... [2023-11-21 17:42:37,723 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:42:37" (1/1) ... [2023-11-21 17:42:37,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:42:37" (1/1) ... [2023-11-21 17:42:37,731 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:42:37" (1/1) ... [2023-11-21 17:42:37,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:42:37" (1/1) ... [2023-11-21 17:42:37,740 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:42:37" (1/1) ... [2023-11-21 17:42:37,743 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 17:42:37,743 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 17:42:37,744 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 17:42:37,744 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 17:42:37,744 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:42:37" (1/1) ... [2023-11-21 17:42:37,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 17:42:37,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-21 17:42:37,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 17:42:37,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 17:42:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 17:42:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 17:42:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 17:42:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-21 17:42:37,825 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-21 17:42:37,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 17:42:37,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 17:42:37,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 17:42:37,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 17:42:37,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 17:42:37,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 17:42:37,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 17:42:37,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 17:42:37,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 17:42:37,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 17:42:37,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 17:42:37,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 17:42:37,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 17:42:37,829 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 17:42:37,965 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 17:42:37,966 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 17:42:38,236 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 17:42:38,424 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 17:42:38,425 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 17:42:38,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:42:38 BoogieIcfgContainer [2023-11-21 17:42:38,427 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 17:42:38,429 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 17:42:38,429 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 17:42:38,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 17:42:38,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:42:37" (1/3) ... [2023-11-21 17:42:38,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa04b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:42:38, skipping insertion in model container [2023-11-21 17:42:38,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:42:37" (2/3) ... [2023-11-21 17:42:38,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa04b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:42:38, skipping insertion in model container [2023-11-21 17:42:38,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:42:38" (3/3) ... [2023-11-21 17:42:38,437 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longest-2.i [2023-11-21 17:42:38,445 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 17:42:38,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 17:42:38,454 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 17:42:38,454 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 17:42:38,522 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 17:42:38,558 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 17:42:38,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-21 17:42:38,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-21 17:42:38,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-21 17:42:38,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-21 17:42:38,605 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-21 17:42:38,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2023-11-21 17:42:38,621 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;@35947ac4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 17:42:38,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 17:42:38,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 17:42:38,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:42:38,811 INFO L85 PathProgramCache]: Analyzing trace with hash 171470636, now seen corresponding path program 1 times [2023-11-21 17:42:38,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:42:38,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675444002] [2023-11-21 17:42:38,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:42:38,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:42:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:42:39,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:42:39,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:42:39,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675444002] [2023-11-21 17:42:39,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675444002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:42:39,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:42:39,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 17:42:39,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753176957] [2023-11-21 17:42:39,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:42:39,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 17:42:39,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:42:39,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 17:42:39,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 17:42:39,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:42:39,228 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:42:39,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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) [2023-11-21 17:42:39,229 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:42:39,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 17:42:39,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 17:42:39,262 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 17:42:39,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:42:39,262 INFO L85 PathProgramCache]: Analyzing trace with hash 312209445, now seen corresponding path program 1 times [2023-11-21 17:42:39,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:42:39,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359271649] [2023-11-21 17:42:39,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:42:39,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:42:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 17:42:39,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 17:42:39,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 17:42:39,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359271649] [2023-11-21 17:42:39,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359271649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 17:42:39,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 17:42:39,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 17:42:39,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448727269] [2023-11-21 17:42:39,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 17:42:39,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 17:42:39,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 17:42:39,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 17:42:39,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 17:42:39,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:42:39,384 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-21 17:42:39,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2023-11-21 17:42:39,384 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-21 17:42:39,384 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-21 17:42:39,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 17:42:39,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 17:42:39,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 17:42:39,476 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 17:42:39,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 17:42:39,477 INFO L85 PathProgramCache]: Analyzing trace with hash -524048176, now seen corresponding path program 1 times [2023-11-21 17:42:39,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 17:42:39,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477206195] [2023-11-21 17:42:39,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 17:42:39,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 17:42:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 17:42:39,524 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 17:42:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 17:42:39,577 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 17:42:39,581 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 17:42:39,582 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 17:42:39,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 17:42:39,594 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-21 17:42:39,595 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was UNSAFE (1/2) [2023-11-21 17:42:39,598 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 17:42:39,598 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 17:42:39,637 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-21 17:42:39,638 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch10 could not be translated [2023-11-21 17:42:39,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 05:42:39 BasicIcfg [2023-11-21 17:42:39,654 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 17:42:39,655 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 17:42:39,655 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 17:42:39,656 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 17:42:39,656 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:42:38" (3/4) ... [2023-11-21 17:42:39,657 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-21 17:42:39,675 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated [2023-11-21 17:42:39,676 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch10 could not be translated [2023-11-21 17:42:39,718 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.graphml [2023-11-21 17:42:39,723 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 17:42:39,723 INFO L158 Benchmark]: Toolchain (without parser) took 2561.58ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 65.1MB in the beginning and 70.9MB in the end (delta: -5.8MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2023-11-21 17:42:39,724 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 138.4MB. Free memory is still 101.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 17:42:39,724 INFO L158 Benchmark]: CACSL2BoogieTranslator took 434.80ms. Allocated memory is still 138.4MB. Free memory was 64.8MB in the beginning and 44.2MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-21 17:42:39,724 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.95ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 44.2MB in the beginning and 136.0MB in the end (delta: -91.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 17:42:39,724 INFO L158 Benchmark]: Boogie Preprocessor took 52.08ms. Allocated memory is still 167.8MB. Free memory was 136.0MB in the beginning and 135.0MB in the end (delta: 1.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 17:42:39,725 INFO L158 Benchmark]: RCFGBuilder took 683.62ms. Allocated memory is still 167.8MB. Free memory was 135.0MB in the beginning and 83.5MB in the end (delta: 51.5MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2023-11-21 17:42:39,725 INFO L158 Benchmark]: TraceAbstraction took 1225.51ms. Allocated memory is still 167.8MB. Free memory was 82.6MB in the beginning and 77.2MB in the end (delta: 5.4MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2023-11-21 17:42:39,725 INFO L158 Benchmark]: Witness Printer took 67.95ms. Allocated memory is still 167.8MB. Free memory was 77.2MB in the beginning and 70.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 17:42:39,726 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 138.4MB. Free memory is still 101.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 434.80ms. Allocated memory is still 138.4MB. Free memory was 64.8MB in the beginning and 44.2MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.95ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 44.2MB in the beginning and 136.0MB in the end (delta: -91.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.08ms. Allocated memory is still 167.8MB. Free memory was 136.0MB in the beginning and 135.0MB in the end (delta: 1.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 683.62ms. Allocated memory is still 167.8MB. Free memory was 135.0MB in the beginning and 83.5MB in the end (delta: 51.5MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1225.51ms. Allocated memory is still 167.8MB. Free memory was 82.6MB in the beginning and 77.2MB in the end (delta: 5.4MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * Witness Printer took 67.95ms. Allocated memory is still 167.8MB. Free memory was 77.2MB in the beginning and 70.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch10 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch10 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: 415, independent: 360, independent conditional: 111, independent unconditional: 249, dependent: 55, dependent conditional: 48, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 367, independent: 360, independent conditional: 111, independent unconditional: 249, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 367, independent: 360, independent conditional: 111, independent unconditional: 249, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 367, independent: 360, independent conditional: 0, independent unconditional: 360, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 367, independent: 360, independent conditional: 0, independent unconditional: 360, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 367, independent: 360, independent conditional: 0, independent unconditional: 360, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 212, independent: 205, independent conditional: 0, independent unconditional: 205, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 212, independent: 198, independent conditional: 0, independent unconditional: 198, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 14, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 14, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 134, independent: 107, independent conditional: 0, independent unconditional: 107, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 367, independent: 155, independent conditional: 0, independent unconditional: 155, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 212, unknown conditional: 0, unknown unconditional: 212] , Statistics on independence cache: Total cache size (in pairs): 212, Positive cache size: 205, Positive conditional cache size: 0, Positive unconditional cache size: 205, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0, Independence queries for same thread: 48 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.2s, Number of persistent set computation: 25, Number of trivial persistent sets: 11, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 256, independent: 249, independent conditional: 0, independent unconditional: 249, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 415, independent: 360, independent conditional: 111, independent unconditional: 249, dependent: 55, dependent conditional: 48, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 367, independent: 360, independent conditional: 111, independent unconditional: 249, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 367, independent: 360, independent conditional: 111, independent unconditional: 249, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 367, independent: 360, independent conditional: 0, independent unconditional: 360, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 367, independent: 360, independent conditional: 0, independent unconditional: 360, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 367, independent: 360, independent conditional: 0, independent unconditional: 360, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 212, independent: 205, independent conditional: 0, independent unconditional: 205, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 212, independent: 198, independent conditional: 0, independent unconditional: 198, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 14, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 14, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 134, independent: 107, independent conditional: 0, independent unconditional: 107, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 367, independent: 155, independent conditional: 0, independent unconditional: 155, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 212, unknown conditional: 0, unknown unconditional: 212] , Statistics on independence cache: Total cache size (in pairs): 212, Positive cache size: 205, Positive conditional cache size: 0, Positive unconditional cache size: 205, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0, Independence queries for same thread: 48 - CounterExampleResult [Line: 749]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L701] 0 int memory[(2*960+1)]; [L702] 0 int next_alloc_idx = 1; [L703] 0 int m = 0; [L703] 0 int m = 0; [L704] 0 int top; [L759] 0 int m2 = 0; [L759] 0 int m2 = 0; [L760] 0 int state = 0; [L778] 0 pthread_t t; VAL [m2={4:0}, m={3:0}, next_alloc_idx=1, state=0, t={5:0}, top=0] [L779] COND TRUE 0 1 [L779] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m2={4:0}, m={3:0}, next_alloc_idx=1, state=0, t={5:0}, top=0] [L763] 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 [L763] RET 1 __VERIFIER_atomic_acquire(&m2) [L766] 1 case 0: [L767] CALL 1 EBStack_init() [L719] 1 top = 0 [L767] RET 1 EBStack_init() [L768] 1 state = 1 [L769] 1 case 1: VAL [arg={0:0}, arg={0:0}, m2={4:0}, m={3:0}, next_alloc_idx=1, state=1, top=0] [L769] 1 case 1: VAL [m2={4:0}, m={3:0}, next_alloc_idx=1, state=1, top=0] [L770] 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 [L770] RET 1 __VERIFIER_atomic_release(&m2) [L771] CALL 1 push_loop() [L752] 1 int r = -1; [L753] 1 int arg = __VERIFIER_nondet_int(); [L754] COND TRUE 1 1 [L755] CALL, EXPR 1 push(arg) [L728] 1 int oldTop = -1, newTop = -1; [L729] CALL, EXPR 1 index_malloc() [L706] 1 int curr_alloc_idx = -1; VAL [curr_alloc_idx=-1, m2={4:0}, m={3:0}, next_alloc_idx=1, state=1, top=0] [L707] 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 [L707] RET 1 __VERIFIER_atomic_acquire(&m) [L708] COND FALSE 1 !(next_alloc_idx+2-1 > (2*960+1)) [L712] 1 curr_alloc_idx = next_alloc_idx [L713] 1 next_alloc_idx += 2 VAL [curr_alloc_idx=1, m2={4:0}, m={3:0}, next_alloc_idx=3, state=1, top=0] [L714] 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 [L714] RET 1 __VERIFIER_atomic_release(&m) [L716] 1 return curr_alloc_idx; [L729] RET, EXPR 1 index_malloc() [L729] 1 newTop = index_malloc() [L730] COND FALSE 1 !(newTop == 0) [L733] 1 memory[newTop+0] = d VAL [\old(d)=0, d=0, m2={4:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top=0] [L734] 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 [L734] RET 1 __VERIFIER_atomic_acquire(&m) [L735] 1 oldTop = top [L736] 1 memory[newTop+1] = oldTop VAL [\old(d)=0, d=0, m2={4:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top=0] [L738] 1 top = newTop VAL [\old(d)=0, d=0, m2={4:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top=1] [L740] 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 [L740] RET 1 __VERIFIER_atomic_release(&m) [L741] 1 return 1; VAL [\old(d)=0, \result=1, d=0, m2={4:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top=1] [L755] RET, EXPR 1 push(arg) [L755] 1 r = push(arg) [L756] CALL 1 __VERIFIER_atomic_assert(r) [L749] EXPR 1 !r || !isEmpty() [L749] CALL, EXPR 1 isEmpty() [L722] COND FALSE 1 !(top == 0) [L725] 1 return 0; [L749] RET, EXPR 1 isEmpty() [L749] EXPR 1 !r || !isEmpty() [L749] COND TRUE 1 !(!(!r || !isEmpty())) [L749] 1 reach_error() VAL [\old(r)=1, m2={4:0}, m={3:0}, next_alloc_idx=3, r=1, state=1, top=1] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1Thread1of1ForFork0 with 1 thread instances CFG has 3 procedures, 54 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 89 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-21 17:42:39,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2023-11-21 17:42:39,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE