./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe027_rmo.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe027_rmo.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85e3ce8f111292d815206f012225ed7eff4e108dc07a389f6fa2d1590522afb0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:37:21,602 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:37:21,666 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:37:21,670 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:37:21,671 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:37:21,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:37:21,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:37:21,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:37:21,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:37:21,700 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:37:21,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:37:21,701 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:37:21,702 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:37:21,704 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:37:21,704 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:37:21,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:37:21,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:37:21,705 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:37:21,705 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:37:21,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:37:21,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:37:21,707 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:37:21,707 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:37:21,707 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:37:21,707 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:37:21,708 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:37:21,708 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:37:21,708 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:37:21,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:37:21,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:37:21,709 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:37:21,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:37:21,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:37:21,710 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:37:21,710 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:37:21,710 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:37:21,714 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:37:21,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:37:21,715 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:37:21,716 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:37:21,716 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:37:21,717 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:37:21,717 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85e3ce8f111292d815206f012225ed7eff4e108dc07a389f6fa2d1590522afb0 [2024-11-19 01:37:21,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:37:22,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:37:22,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:37:22,018 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:37:22,018 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:37:22,019 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_rmo.i [2024-11-19 01:37:23,539 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:37:23,806 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:37:23,806 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_rmo.i [2024-11-19 01:37:23,822 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b1a3459/7da4e83356564a4ebea16f4f986b1228/FLAGeea3f815a [2024-11-19 01:37:23,838 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b1a3459/7da4e83356564a4ebea16f4f986b1228 [2024-11-19 01:37:23,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:37:23,842 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:37:23,845 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:37:23,845 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:37:23,851 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:37:23,852 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:37:23" (1/1) ... [2024-11-19 01:37:23,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@704cfeba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:23, skipping insertion in model container [2024-11-19 01:37:23,855 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:37:23" (1/1) ... [2024-11-19 01:37:23,910 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:37:24,141 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_rmo.i[988,1001] [2024-11-19 01:37:24,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:37:24,388 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:37:24,402 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_rmo.i[988,1001] [2024-11-19 01:37:24,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:37:24,513 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:37:24,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:24 WrapperNode [2024-11-19 01:37:24,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:37:24,515 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:37:24,516 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:37:24,516 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:37:24,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:24" (1/1) ... [2024-11-19 01:37:24,555 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:24" (1/1) ... [2024-11-19 01:37:24,589 INFO L138 Inliner]: procedures = 176, calls = 66, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 137 [2024-11-19 01:37:24,589 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:37:24,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:37:24,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:37:24,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:37:24,602 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:24" (1/1) ... [2024-11-19 01:37:24,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:24" (1/1) ... [2024-11-19 01:37:24,606 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:24" (1/1) ... [2024-11-19 01:37:24,631 INFO L175 MemorySlicer]: Split 21 memory accesses to 2 slices as follows [2, 19]. 90 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 7 writes are split as follows [0, 7]. [2024-11-19 01:37:24,632 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:24" (1/1) ... [2024-11-19 01:37:24,632 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:24" (1/1) ... [2024-11-19 01:37:24,648 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:24" (1/1) ... [2024-11-19 01:37:24,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:24" (1/1) ... [2024-11-19 01:37:24,657 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:24" (1/1) ... [2024-11-19 01:37:24,662 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:24" (1/1) ... [2024-11-19 01:37:24,669 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:37:24,672 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:37:24,672 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:37:24,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:37:24,673 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:24" (1/1) ... [2024-11-19 01:37:24,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:37:24,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:37:24,711 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 01:37:24,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 01:37:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:37:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:37:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:37:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:37:24,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 01:37:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:37:24,765 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-19 01:37:24,766 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-19 01:37:24,766 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-19 01:37:24,767 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-19 01:37:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-19 01:37:24,767 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-19 01:37:24,767 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-19 01:37:24,768 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-19 01:37:24,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:37:24,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:37:24,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 01:37:24,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:37:24,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:37:24,770 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:37:24,933 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:37:24,934 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:37:25,354 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:37:25,354 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:37:25,729 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:37:25,729 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 01:37:25,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:37:25 BoogieIcfgContainer [2024-11-19 01:37:25,730 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:37:25,733 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:37:25,733 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:37:25,736 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:37:25,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:37:23" (1/3) ... [2024-11-19 01:37:25,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40adc95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:37:25, skipping insertion in model container [2024-11-19 01:37:25,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:37:24" (2/3) ... [2024-11-19 01:37:25,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40adc95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:37:25, skipping insertion in model container [2024-11-19 01:37:25,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:37:25" (3/3) ... [2024-11-19 01:37:25,740 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_rmo.i [2024-11-19 01:37:25,759 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:37:25,759 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:37:25,760 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:37:25,829 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 01:37:25,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2024-11-19 01:37:25,910 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2024-11-19 01:37:25,910 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:37:25,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-19 01:37:25,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2024-11-19 01:37:25,920 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2024-11-19 01:37:25,929 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:37:25,936 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@332d0b5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:37:25,936 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-19 01:37:25,953 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:37:25,953 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-11-19 01:37:25,954 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:37:25,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:37:25,955 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:37:25,955 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:37:25,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:37:25,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1504629998, now seen corresponding path program 1 times [2024-11-19 01:37:25,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:37:25,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886973487] [2024-11-19 01:37:25,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:37:25,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:37:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:37:26,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:37:26,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:37:26,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886973487] [2024-11-19 01:37:26,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886973487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:37:26,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:37:26,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:37:26,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89224900] [2024-11-19 01:37:26,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:37:26,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:37:26,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:37:26,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:37:26,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:37:26,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-11-19 01:37:26,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:37:26,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:37:26,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-11-19 01:37:26,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:37:28,135 INFO L124 PetriNetUnfolderBase]: 5237/7701 cut-off events. [2024-11-19 01:37:28,135 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-19 01:37:28,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15063 conditions, 7701 events. 5237/7701 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 48279 event pairs, 655 based on Foata normal form. 240/7927 useless extension candidates. Maximal degree in co-relation 15051. Up to 4461 conditions per place. [2024-11-19 01:37:28,209 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 47 selfloop transitions, 6 changer transitions 1/66 dead transitions. [2024-11-19 01:37:28,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 261 flow [2024-11-19 01:37:28,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:37:28,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:37:28,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-19 01:37:28,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2024-11-19 01:37:28,222 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 4 states and 124 transitions. [2024-11-19 01:37:28,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 261 flow [2024-11-19 01:37:28,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 66 transitions, 254 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 01:37:28,228 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 126 flow [2024-11-19 01:37:28,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-11-19 01:37:28,233 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2024-11-19 01:37:28,233 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 126 flow [2024-11-19 01:37:28,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:37:28,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:37:28,234 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:37:28,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:37:28,234 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:37:28,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:37:28,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1064450256, now seen corresponding path program 1 times [2024-11-19 01:37:28,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:37:28,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529583352] [2024-11-19 01:37:28,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:37:28,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:37:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:37:28,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:37:28,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:37:28,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529583352] [2024-11-19 01:37:28,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529583352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:37:28,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:37:28,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:37:28,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197275329] [2024-11-19 01:37:28,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:37:28,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:37:28,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:37:28,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:37:28,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:37:28,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-11-19 01:37:28,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:37:28,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:37:28,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-11-19 01:37:28,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:37:29,618 INFO L124 PetriNetUnfolderBase]: 4265/6325 cut-off events. [2024-11-19 01:37:29,619 INFO L125 PetriNetUnfolderBase]: For 1693/1698 co-relation queries the response was YES. [2024-11-19 01:37:29,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14755 conditions, 6325 events. 4265/6325 cut-off events. For 1693/1698 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 38295 event pairs, 245 based on Foata normal form. 230/6541 useless extension candidates. Maximal degree in co-relation 14743. Up to 3201 conditions per place. [2024-11-19 01:37:29,675 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 60 selfloop transitions, 10 changer transitions 1/83 dead transitions. [2024-11-19 01:37:29,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 83 transitions, 379 flow [2024-11-19 01:37:29,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:37:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:37:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-11-19 01:37:29,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7022222222222222 [2024-11-19 01:37:29,680 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 126 flow. Second operand 5 states and 158 transitions. [2024-11-19 01:37:29,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 83 transitions, 379 flow [2024-11-19 01:37:29,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 83 transitions, 368 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-19 01:37:29,685 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 178 flow [2024-11-19 01:37:29,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-11-19 01:37:29,687 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2024-11-19 01:37:29,688 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 178 flow [2024-11-19 01:37:29,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:37:29,689 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:37:29,689 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:37:29,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:37:29,690 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:37:29,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:37:29,690 INFO L85 PathProgramCache]: Analyzing trace with hash -557894156, now seen corresponding path program 1 times [2024-11-19 01:37:29,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:37:29,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358109166] [2024-11-19 01:37:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:37:29,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:37:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:37:29,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:37:29,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:37:29,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358109166] [2024-11-19 01:37:29,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358109166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:37:29,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:37:29,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:37:29,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069242281] [2024-11-19 01:37:29,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:37:29,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:37:29,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:37:29,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:37:29,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:37:29,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-11-19 01:37:29,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:37:29,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:37:29,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-11-19 01:37:29,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:37:30,788 INFO L124 PetriNetUnfolderBase]: 2781/4141 cut-off events. [2024-11-19 01:37:30,789 INFO L125 PetriNetUnfolderBase]: For 3297/3307 co-relation queries the response was YES. [2024-11-19 01:37:30,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10897 conditions, 4141 events. 2781/4141 cut-off events. For 3297/3307 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 22372 event pairs, 111 based on Foata normal form. 176/4303 useless extension candidates. Maximal degree in co-relation 10883. Up to 1361 conditions per place. [2024-11-19 01:37:30,818 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 71 selfloop transitions, 14 changer transitions 1/98 dead transitions. [2024-11-19 01:37:30,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 98 transitions, 502 flow [2024-11-19 01:37:30,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:37:30,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:37:30,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-11-19 01:37:30,821 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-11-19 01:37:30,821 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 178 flow. Second operand 6 states and 190 transitions. [2024-11-19 01:37:30,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 98 transitions, 502 flow [2024-11-19 01:37:30,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 472 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-19 01:37:30,833 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 228 flow [2024-11-19 01:37:30,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-11-19 01:37:30,834 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2024-11-19 01:37:30,834 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 228 flow [2024-11-19 01:37:30,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:37:30,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:37:30,835 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:37:30,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:37:30,835 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:37:30,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:37:30,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1851568372, now seen corresponding path program 1 times [2024-11-19 01:37:30,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:37:30,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878832921] [2024-11-19 01:37:30,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:37:30,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:37:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:37:31,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:37:31,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:37:31,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878832921] [2024-11-19 01:37:31,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878832921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:37:31,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:37:31,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:37:31,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867644381] [2024-11-19 01:37:31,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:37:31,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:37:31,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:37:31,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:37:31,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:37:31,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-11-19 01:37:31,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:37:31,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:37:31,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-11-19 01:37:31,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:37:31,746 INFO L124 PetriNetUnfolderBase]: 1769/2589 cut-off events. [2024-11-19 01:37:31,747 INFO L125 PetriNetUnfolderBase]: For 3581/3591 co-relation queries the response was YES. [2024-11-19 01:37:31,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7578 conditions, 2589 events. 1769/2589 cut-off events. For 3581/3591 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 12415 event pairs, 73 based on Foata normal form. 84/2659 useless extension candidates. Maximal degree in co-relation 7563. Up to 796 conditions per place. [2024-11-19 01:37:31,764 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 64 selfloop transitions, 18 changer transitions 1/95 dead transitions. [2024-11-19 01:37:31,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 95 transitions, 500 flow [2024-11-19 01:37:31,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:37:31,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:37:31,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-11-19 01:37:31,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6476190476190476 [2024-11-19 01:37:31,767 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 228 flow. Second operand 7 states and 204 transitions. [2024-11-19 01:37:31,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 95 transitions, 500 flow [2024-11-19 01:37:31,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 454 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-19 01:37:31,783 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 238 flow [2024-11-19 01:37:31,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=238, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2024-11-19 01:37:31,784 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-11-19 01:37:31,784 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 238 flow [2024-11-19 01:37:31,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:37:31,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:37:31,785 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:37:31,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:37:31,785 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:37:31,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:37:31,786 INFO L85 PathProgramCache]: Analyzing trace with hash -736900721, now seen corresponding path program 1 times [2024-11-19 01:37:31,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:37:31,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551408351] [2024-11-19 01:37:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:37:31,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:37:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:37:32,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:37:32,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:37:32,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551408351] [2024-11-19 01:37:32,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551408351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:37:32,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:37:32,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:37:32,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210915305] [2024-11-19 01:37:32,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:37:32,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:37:32,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:37:32,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:37:32,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:37:32,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-11-19 01:37:32,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:37:32,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:37:32,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-11-19 01:37:32,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:37:32,783 INFO L124 PetriNetUnfolderBase]: 2267/3872 cut-off events. [2024-11-19 01:37:32,783 INFO L125 PetriNetUnfolderBase]: For 2103/2193 co-relation queries the response was YES. [2024-11-19 01:37:32,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9239 conditions, 3872 events. 2267/3872 cut-off events. For 2103/2193 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24759 event pairs, 422 based on Foata normal form. 16/3705 useless extension candidates. Maximal degree in co-relation 9223. Up to 1325 conditions per place. [2024-11-19 01:37:32,807 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 41 selfloop transitions, 3 changer transitions 16/86 dead transitions. [2024-11-19 01:37:32,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 86 transitions, 446 flow [2024-11-19 01:37:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:37:32,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:37:32,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-11-19 01:37:32,808 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2024-11-19 01:37:32,808 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 238 flow. Second operand 6 states and 175 transitions. [2024-11-19 01:37:32,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 86 transitions, 446 flow [2024-11-19 01:37:32,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 86 transitions, 340 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-11-19 01:37:32,828 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 160 flow [2024-11-19 01:37:32,829 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-11-19 01:37:32,829 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2024-11-19 01:37:32,830 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 160 flow [2024-11-19 01:37:32,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:37:32,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:37:32,830 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:37:32,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:37:32,830 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:37:32,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:37:32,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1259025143, now seen corresponding path program 2 times [2024-11-19 01:37:32,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:37:32,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587643184] [2024-11-19 01:37:32,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:37:32,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:37:32,906 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:37:32,906 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:37:34,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:37:34,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:37:34,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587643184] [2024-11-19 01:37:34,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587643184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:37:34,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:37:34,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:37:34,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009235712] [2024-11-19 01:37:34,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:37:34,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:37:34,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:37:34,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:37:34,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:37:34,079 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-11-19 01:37:34,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 160 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:37:34,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:37:34,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-11-19 01:37:34,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:37:35,223 INFO L124 PetriNetUnfolderBase]: 3701/6363 cut-off events. [2024-11-19 01:37:35,224 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-19 01:37:35,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12524 conditions, 6363 events. 3701/6363 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 47782 event pairs, 1219 based on Foata normal form. 16/5680 useless extension candidates. Maximal degree in co-relation 12510. Up to 1879 conditions per place. [2024-11-19 01:37:35,269 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 39 selfloop transitions, 6 changer transitions 14/88 dead transitions. [2024-11-19 01:37:35,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 88 transitions, 356 flow [2024-11-19 01:37:35,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:37:35,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:37:35,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 228 transitions. [2024-11-19 01:37:35,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-19 01:37:35,271 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 160 flow. Second operand 8 states and 228 transitions. [2024-11-19 01:37:35,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 88 transitions, 356 flow [2024-11-19 01:37:35,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 88 transitions, 346 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-19 01:37:35,275 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 193 flow [2024-11-19 01:37:35,275 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=193, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-11-19 01:37:35,277 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2024-11-19 01:37:35,277 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 193 flow [2024-11-19 01:37:35,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:37:35,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:37:35,278 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:37:35,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:37:35,278 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:37:35,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:37:35,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1875629841, now seen corresponding path program 3 times [2024-11-19 01:37:35,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:37:35,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412474031] [2024-11-19 01:37:35,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:37:35,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:37:35,418 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:37:35,418 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:37:35,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:37:35,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:37:35,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412474031] [2024-11-19 01:37:35,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412474031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:37:35,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:37:35,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:37:35,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4905907] [2024-11-19 01:37:35,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:37:35,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:37:35,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:37:35,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:37:35,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:37:35,701 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-11-19 01:37:35,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:37:35,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:37:35,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-11-19 01:37:35,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:37:37,106 INFO L124 PetriNetUnfolderBase]: 9041/15459 cut-off events. [2024-11-19 01:37:37,107 INFO L125 PetriNetUnfolderBase]: For 2939/2939 co-relation queries the response was YES. [2024-11-19 01:37:37,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32486 conditions, 15459 events. 9041/15459 cut-off events. For 2939/2939 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 129544 event pairs, 2597 based on Foata normal form. 16/14231 useless extension candidates. Maximal degree in co-relation 32469. Up to 5697 conditions per place. [2024-11-19 01:37:37,246 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 35 selfloop transitions, 1 changer transitions 34/97 dead transitions. [2024-11-19 01:37:37,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 97 transitions, 465 flow [2024-11-19 01:37:37,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:37:37,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:37:37,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-11-19 01:37:37,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6518518518518519 [2024-11-19 01:37:37,249 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 193 flow. Second operand 6 states and 176 transitions. [2024-11-19 01:37:37,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 97 transitions, 465 flow [2024-11-19 01:37:37,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 458 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-19 01:37:37,258 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 187 flow [2024-11-19 01:37:37,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2024-11-19 01:37:37,259 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 19 predicate places. [2024-11-19 01:37:37,260 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 187 flow [2024-11-19 01:37:37,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:37:37,260 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:37:37,260 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:37:37,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:37:37,261 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:37:37,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:37:37,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1805460799, now seen corresponding path program 4 times [2024-11-19 01:37:37,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:37:37,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733011118] [2024-11-19 01:37:37,262 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:37:37,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:37:37,362 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:37:37,363 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 01:37:37,363 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 01:37:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 01:37:37,504 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 01:37:37,504 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 01:37:37,506 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-11-19 01:37:37,508 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2024-11-19 01:37:37,508 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-19 01:37:37,508 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-11-19 01:37:37,508 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-11-19 01:37:37,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:37:37,509 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2024-11-19 01:37:37,664 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 01:37:37,664 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 01:37:37,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:37:37 BasicIcfg [2024-11-19 01:37:37,672 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 01:37:37,673 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 01:37:37,673 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 01:37:37,674 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 01:37:37,675 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:37:25" (3/4) ... [2024-11-19 01:37:37,676 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-19 01:37:37,805 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 01:37:37,806 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 01:37:37,809 INFO L158 Benchmark]: Toolchain (without parser) took 13966.58ms. Allocated memory was 138.4MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 78.9MB in the beginning and 717.1MB in the end (delta: -638.2MB). Peak memory consumption was 507.4MB. Max. memory is 16.1GB. [2024-11-19 01:37:37,809 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 138.4MB. Free memory is still 110.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 01:37:37,809 INFO L158 Benchmark]: CACSL2BoogieTranslator took 669.62ms. Allocated memory was 138.4MB in the beginning and 197.1MB in the end (delta: 58.7MB). Free memory was 78.7MB in the beginning and 151.5MB in the end (delta: -72.8MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2024-11-19 01:37:37,809 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.15ms. Allocated memory is still 197.1MB. Free memory was 151.5MB in the beginning and 148.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 01:37:37,810 INFO L158 Benchmark]: Boogie Preprocessor took 81.04ms. Allocated memory is still 197.1MB. Free memory was 148.3MB in the beginning and 144.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 01:37:37,810 INFO L158 Benchmark]: RCFGBuilder took 1058.27ms. Allocated memory is still 197.1MB. Free memory was 144.1MB in the beginning and 140.6MB in the end (delta: 3.5MB). Peak memory consumption was 73.4MB. Max. memory is 16.1GB. [2024-11-19 01:37:37,810 INFO L158 Benchmark]: TraceAbstraction took 11939.80ms. Allocated memory was 197.1MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 139.6MB in the beginning and 742.2MB in the end (delta: -602.6MB). Peak memory consumption was 485.8MB. Max. memory is 16.1GB. [2024-11-19 01:37:37,810 INFO L158 Benchmark]: Witness Printer took 135.34ms. Allocated memory is still 1.3GB. Free memory was 742.2MB in the beginning and 717.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-19 01:37:37,813 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 138.4MB. Free memory is still 110.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 669.62ms. Allocated memory was 138.4MB in the beginning and 197.1MB in the end (delta: 58.7MB). Free memory was 78.7MB in the beginning and 151.5MB in the end (delta: -72.8MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.15ms. Allocated memory is still 197.1MB. Free memory was 151.5MB in the beginning and 148.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.04ms. Allocated memory is still 197.1MB. Free memory was 148.3MB in the beginning and 144.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1058.27ms. Allocated memory is still 197.1MB. Free memory was 144.1MB in the beginning and 140.6MB in the end (delta: 3.5MB). Peak memory consumption was 73.4MB. Max. memory is 16.1GB. * TraceAbstraction took 11939.80ms. Allocated memory was 197.1MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 139.6MB in the beginning and 742.2MB in the end (delta: -602.6MB). Peak memory consumption was 485.8MB. Max. memory is 16.1GB. * Witness Printer took 135.34ms. Allocated memory is still 1.3GB. Free memory was 742.2MB in the beginning and 717.1MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L711] 0 int __unbuffered_cnt = 0; [L713] 0 int __unbuffered_p0_EAX = 0; [L714] 0 _Bool __unbuffered_p0_EAX$flush_delayed; [L715] 0 int __unbuffered_p0_EAX$mem_tmp; [L716] 0 _Bool __unbuffered_p0_EAX$r_buff0_thd0; [L717] 0 _Bool __unbuffered_p0_EAX$r_buff0_thd1; [L718] 0 _Bool __unbuffered_p0_EAX$r_buff0_thd2; [L719] 0 _Bool __unbuffered_p0_EAX$r_buff0_thd3; [L720] 0 _Bool __unbuffered_p0_EAX$r_buff0_thd4; [L721] 0 _Bool __unbuffered_p0_EAX$r_buff1_thd0; [L722] 0 _Bool __unbuffered_p0_EAX$r_buff1_thd1; [L723] 0 _Bool __unbuffered_p0_EAX$r_buff1_thd2; [L724] 0 _Bool __unbuffered_p0_EAX$r_buff1_thd3; [L725] 0 _Bool __unbuffered_p0_EAX$r_buff1_thd4; [L726] 0 _Bool __unbuffered_p0_EAX$read_delayed; [L727] 0 int *__unbuffered_p0_EAX$read_delayed_var; [L728] 0 int __unbuffered_p0_EAX$w_buff0; [L729] 0 _Bool __unbuffered_p0_EAX$w_buff0_used; [L730] 0 int __unbuffered_p0_EAX$w_buff1; [L731] 0 _Bool __unbuffered_p0_EAX$w_buff1_used; [L733] 0 int __unbuffered_p0_EBX = 0; [L735] 0 int __unbuffered_p2_EAX = 0; [L737] 0 int __unbuffered_p2_EBX = 0; [L738] 0 _Bool main$tmp_guard0; [L739] 0 _Bool main$tmp_guard1; [L741] 0 int x = 0; [L743] 0 int y = 0; [L743] 0 int y = 0; [L744] 0 _Bool y$flush_delayed; [L745] 0 int y$mem_tmp; [L746] 0 _Bool y$r_buff0_thd0; [L747] 0 _Bool y$r_buff0_thd1; [L748] 0 _Bool y$r_buff0_thd2; [L749] 0 _Bool y$r_buff0_thd3; [L750] 0 _Bool y$r_buff0_thd4; [L751] 0 _Bool y$r_buff1_thd0; [L752] 0 _Bool y$r_buff1_thd1; [L753] 0 _Bool y$r_buff1_thd2; [L754] 0 _Bool y$r_buff1_thd3; [L755] 0 _Bool y$r_buff1_thd4; [L756] 0 _Bool y$read_delayed; [L757] 0 int *y$read_delayed_var; [L758] 0 int y$w_buff0; [L759] 0 _Bool y$w_buff0_used; [L760] 0 int y$w_buff1; [L761] 0 _Bool y$w_buff1_used; [L762] 0 _Bool weak$$choice0; [L763] 0 _Bool weak$$choice1; [L764] 0 _Bool weak$$choice2; [L863] 0 pthread_t t2433; [L864] FCALL, FORK 0 pthread_create(&t2433, ((void *)0), P0, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=0, __unbuffered_p0_EAX$read_delayed_var={0:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t2433=-3, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L768] 1 weak$$choice0 = __VERIFIER_nondet_bool() [L769] 1 weak$$choice2 = __VERIFIER_nondet_bool() [L770] 1 y$flush_delayed = weak$$choice2 [L771] EXPR 1 \read(y) [L771] 1 y$mem_tmp = y [L772] EXPR 1 !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff1) [L772] EXPR 1 \read(y) [L772] EXPR 1 !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff1) [L772] 1 y = !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff1) [L773] 1 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff0)) [L774] 1 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff1 : y$w_buff1)) [L775] 1 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used)) [L776] 1 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L777] 1 y$r_buff0_thd1 = weak$$choice2 ? y$r_buff0_thd1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff0_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1)) [L778] 1 y$r_buff1_thd1 = weak$$choice2 ? y$r_buff1_thd1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff1_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L779] 1 __unbuffered_p0_EAX$read_delayed = (_Bool)1 [L780] 1 __unbuffered_p0_EAX$read_delayed_var = &y [L781] EXPR 1 \read(y) [L781] 1 __unbuffered_p0_EAX = y [L782] EXPR 1 y$flush_delayed ? y$mem_tmp : y [L782] EXPR 1 y$flush_delayed ? y$mem_tmp : y [L782] 1 y = y$flush_delayed ? y$mem_tmp : y [L783] 1 y$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice1=0, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L865] 0 pthread_t t2434; [L866] FCALL, FORK 0 pthread_create(&t2434, ((void *)0), P1, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2433=-3, t2434=-2, weak$$choice0=0, weak$$choice1=0, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L786] 1 __unbuffered_p0_EBX = x VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice1=0, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L867] 0 pthread_t t2435; [L868] FCALL, FORK 0 pthread_create(&t2435, ((void *)0), P2, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2433=-3, t2434=-2, t2435=-1, weak$$choice0=0, weak$$choice1=0, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L869] 0 pthread_t t2436; [L870] FCALL, FORK 0 pthread_create(&t2436, ((void *)0), P3, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2433=-3, t2434=-2, t2435=-1, t2436=0, weak$$choice0=0, weak$$choice1=0, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L798] 2 x = 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L810] 3 __unbuffered_p2_EAX = x VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L813] 3 weak$$choice0 = __VERIFIER_nondet_bool() [L814] 3 weak$$choice2 = __VERIFIER_nondet_bool() [L815] 3 y$flush_delayed = weak$$choice2 [L816] EXPR 3 \read(y) [L816] 3 y$mem_tmp = y [L817] EXPR 3 !y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff1) [L817] EXPR 3 \read(y) [L817] EXPR 3 !y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff1) [L817] 3 y = !y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff1) [L818] 3 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff0)) [L819] 3 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff1 : y$w_buff1)) [L820] 3 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used)) [L821] 3 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L822] 3 y$r_buff0_thd3 = weak$$choice2 ? y$r_buff0_thd3 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$r_buff0_thd3 : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3)) [L823] 3 y$r_buff1_thd3 = weak$$choice2 ? y$r_buff1_thd3 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$r_buff1_thd3 : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L824] EXPR 3 \read(y) [L824] 3 __unbuffered_p2_EBX = y [L825] EXPR 3 y$flush_delayed ? y$mem_tmp : y [L825] EXPR 3 \read(y) [L825] EXPR 3 y$flush_delayed ? y$mem_tmp : y [L825] 3 y = y$flush_delayed ? y$mem_tmp : y [L826] 3 y$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice1=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L838] 4 y = 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice1=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L841] EXPR 4 y$w_buff0_used && y$r_buff0_thd4 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd4 ? y$w_buff1 : y) [L841] EXPR 4 y$w_buff1_used && y$r_buff1_thd4 ? y$w_buff1 : y [L841] EXPR 4 \read(y) [L841] EXPR 4 y$w_buff1_used && y$r_buff1_thd4 ? y$w_buff1 : y [L841] EXPR 4 y$w_buff0_used && y$r_buff0_thd4 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd4 ? y$w_buff1 : y) [L841] 4 y = y$w_buff0_used && y$r_buff0_thd4 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd4 ? y$w_buff1 : y) [L842] 4 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$w_buff0_used [L843] 4 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$w_buff1_used [L844] 4 y$r_buff0_thd4 = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$r_buff0_thd4 [L845] 4 y$r_buff1_thd4 = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$r_buff1_thd4 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice1=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L791] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice1=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L803] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice1=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L831] 3 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=3, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice1=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L848] 4 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=4, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice1=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L872] 0 main$tmp_guard0 = __unbuffered_cnt == 4 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=4, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2433=-3, t2434=-2, t2435=-1, t2436=0, weak$$choice0=1, weak$$choice1=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L874] CALL 0 assume_abort_if_not(main$tmp_guard0) [L4] COND FALSE 0 !(!cond) [L874] RET 0 assume_abort_if_not(main$tmp_guard0) [L876] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L876] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L876] EXPR 0 \read(y) [L876] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L876] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L876] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L877] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L878] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L879] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L880] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=4, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2433=-3, t2434=-2, t2435=-1, t2436=0, weak$$choice0=1, weak$$choice1=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L883] 0 weak$$choice1 = __VERIFIER_nondet_bool() [L884] EXPR 0 __unbuffered_p0_EAX$read_delayed ? (weak$$choice1 ? *__unbuffered_p0_EAX$read_delayed_var : __unbuffered_p0_EAX) : __unbuffered_p0_EAX [L884] EXPR 0 weak$$choice1 ? *__unbuffered_p0_EAX$read_delayed_var : __unbuffered_p0_EAX [L884] EXPR 0 \read(*__unbuffered_p0_EAX$read_delayed_var) [L884] EXPR 0 weak$$choice1 ? *__unbuffered_p0_EAX$read_delayed_var : __unbuffered_p0_EAX [L884] EXPR 0 __unbuffered_p0_EAX$read_delayed ? (weak$$choice1 ? *__unbuffered_p0_EAX$read_delayed_var : __unbuffered_p0_EAX) : __unbuffered_p0_EAX [L884] 0 __unbuffered_p0_EAX = __unbuffered_p0_EAX$read_delayed ? (weak$$choice1 ? *__unbuffered_p0_EAX$read_delayed_var : __unbuffered_p0_EAX) : __unbuffered_p0_EAX [L885] 0 main$tmp_guard1 = !(__unbuffered_p0_EAX == 1 && __unbuffered_p0_EBX == 0 && __unbuffered_p2_EAX == 1 && __unbuffered_p2_EBX == 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=4, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2433=-3, t2434=-2, t2435=-1, t2436=0, weak$$choice0=1, weak$$choice1=1, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L887] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L19] COND TRUE 0 !expression VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=4, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice1=1, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L19] 0 reach_error() VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=4, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff0_thd4=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$r_buff1_thd4=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice1=1, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] - UnprovableResult [Line: 870]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 868]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 866]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 864]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 75 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 496 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 467 mSDsluCounter, 113 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 85 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1004 IncrementalHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 28 mSDtfsCounter, 1004 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=238occurred in iteration=4, InterpolantAutomatonStates: 42, 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, 0.7s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 225 NumberOfCodeBlocks, 225 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 184 ConstructedInterpolants, 0 QuantifiedInterpolants, 788 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-19 01:37:37,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE