./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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-ext/37_stack_lock_p0_vs_concur.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 62bb9e4cb3fb45378d7de513612dc08e0394f3048289be85bceda07932ec1175 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:30:07,377 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:30:07,423 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:30:07,437 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:30:07,437 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:30:07,471 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:30:07,471 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:30:07,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:30:07,472 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:30:07,472 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:30:07,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:30:07,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:30:07,473 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:30:07,473 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:30:07,473 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:30:07,473 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:30:07,473 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:30:07,474 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:30:07,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:30:07,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:30:07,474 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:30:07,477 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:30:07,477 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:30:07,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:30:07,478 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:30:07,478 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:30:07,478 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:30:07,478 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:30:07,478 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:30:07,479 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:30:07,479 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:30:07,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:30:07,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:30:07,479 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:30:07,479 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:30:07,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:30:07,480 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:30:07,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:30:07,480 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:30:07,480 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:30:07,480 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:30:07,481 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:30:07,481 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62bb9e4cb3fb45378d7de513612dc08e0394f3048289be85bceda07932ec1175 [2024-11-22 13:30:07,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:30:07,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:30:07,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:30:07,705 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:30:07,706 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:30:07,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i [2024-11-22 13:30:09,024 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:30:09,222 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:30:09,222 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i [2024-11-22 13:30:09,234 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9a65f226/6d92866941714e5798cd74d60457d76b/FLAG9a286a321 [2024-11-22 13:30:09,596 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9a65f226/6d92866941714e5798cd74d60457d76b [2024-11-22 13:30:09,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:30:09,599 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:30:09,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:30:09,600 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:30:09,604 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:30:09,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:30:09" (1/1) ... [2024-11-22 13:30:09,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eaabf18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:09, skipping insertion in model container [2024-11-22 13:30:09,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:30:09" (1/1) ... [2024-11-22 13:30:09,644 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:30:09,900 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-ext/37_stack_lock_p0_vs_concur.i[31044,31057] [2024-11-22 13:30:09,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:30:09,928 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:30:09,962 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-ext/37_stack_lock_p0_vs_concur.i[31044,31057] [2024-11-22 13:30:09,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:30:09,995 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:30:09,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:09 WrapperNode [2024-11-22 13:30:09,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:30:09,997 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:30:09,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:30:09,997 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:30:10,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:09" (1/1) ... [2024-11-22 13:30:10,014 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:09" (1/1) ... [2024-11-22 13:30:10,038 INFO L138 Inliner]: procedures = 165, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 148 [2024-11-22 13:30:10,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:30:10,040 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:30:10,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:30:10,040 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:30:10,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:09" (1/1) ... [2024-11-22 13:30:10,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:09" (1/1) ... [2024-11-22 13:30:10,051 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:09" (1/1) ... [2024-11-22 13:30:10,068 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 5, 1]. The 2 writes are split as follows [0, 0, 2]. [2024-11-22 13:30:10,070 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:09" (1/1) ... [2024-11-22 13:30:10,071 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:09" (1/1) ... [2024-11-22 13:30:10,075 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:09" (1/1) ... [2024-11-22 13:30:10,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:09" (1/1) ... [2024-11-22 13:30:10,080 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:09" (1/1) ... [2024-11-22 13:30:10,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:09" (1/1) ... [2024-11-22 13:30:10,083 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:30:10,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:30:10,084 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:30:10,084 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:30:10,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:09" (1/1) ... [2024-11-22 13:30:10,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:30:10,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:30:10,118 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) [2024-11-22 13:30:10,126 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 [2024-11-22 13:30:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:30:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:30:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 13:30:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-22 13:30:10,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-22 13:30:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:30:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:30:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 13:30:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-22 13:30:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:30:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 13:30:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 13:30:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:30:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:30:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 13:30:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-22 13:30:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:30:10,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:30:10,199 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:30:10,312 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:30:10,314 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:30:10,534 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:30:10,535 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:30:10,890 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:30:10,890 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 13:30:10,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:30:10 BoogieIcfgContainer [2024-11-22 13:30:10,891 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:30:10,893 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:30:10,893 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:30:10,897 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:30:10,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:30:09" (1/3) ... [2024-11-22 13:30:10,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464ac62b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:30:10, skipping insertion in model container [2024-11-22 13:30:10,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:30:09" (2/3) ... [2024-11-22 13:30:10,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464ac62b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:30:10, skipping insertion in model container [2024-11-22 13:30:10,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:30:10" (3/3) ... [2024-11-22 13:30:10,900 INFO L112 eAbstractionObserver]: Analyzing ICFG 37_stack_lock_p0_vs_concur.i [2024-11-22 13:30:10,915 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:30:10,915 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:30:10,915 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:30:10,954 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 13:30:10,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 26 transitions, 56 flow [2024-11-22 13:30:11,011 INFO L124 PetriNetUnfolderBase]: 3/28 cut-off events. [2024-11-22 13:30:11,012 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 13:30:11,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 28 events. 3/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-22 13:30:11,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 26 transitions, 56 flow [2024-11-22 13:30:11,016 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 26 transitions, 56 flow [2024-11-22 13:30:11,028 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:30:11,035 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;@28faf9f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:30:11,035 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-22 13:30:11,041 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:30:11,041 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-22 13:30:11,041 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 13:30:11,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:30:11,042 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-22 13:30:11,043 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:30:11,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:30:11,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1291107713, now seen corresponding path program 1 times [2024-11-22 13:30:11,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:30:11,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892836257] [2024-11-22 13:30:11,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:30:11,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:30:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 13:30:11,418 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 13:30:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 13:30:11,485 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 13:30:11,486 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 13:30:11,487 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-11-22 13:30:11,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-22 13:30:11,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-11-22 13:30:11,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:30:11,492 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-22 13:30:11,498 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 13:30:11,498 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-22 13:30:11,527 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 13:30:11,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 47 transitions, 104 flow [2024-11-22 13:30:11,565 INFO L124 PetriNetUnfolderBase]: 6/52 cut-off events. [2024-11-22 13:30:11,566 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:30:11,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 52 events. 6/52 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2024-11-22 13:30:11,568 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 47 transitions, 104 flow [2024-11-22 13:30:11,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 47 transitions, 104 flow [2024-11-22 13:30:11,571 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:30:11,573 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;@28faf9f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:30:11,573 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 13:30:11,580 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:30:11,581 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2024-11-22 13:30:11,581 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:30:11,581 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:30:11,581 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-22 13:30:11,582 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-22 13:30:11,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:30:11,582 INFO L85 PathProgramCache]: Analyzing trace with hash 23591720, now seen corresponding path program 1 times [2024-11-22 13:30:11,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:30:11,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885374823] [2024-11-22 13:30:11,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:30:11,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:30:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 13:30:11,835 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 13:30:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 13:30:11,863 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 13:30:11,864 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 13:30:11,864 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-22 13:30:11,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-22 13:30:11,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-22 13:30:11,864 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-22 13:30:11,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:30:11,865 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-22 13:30:11,865 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 13:30:11,865 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-22 13:30:11,889 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 13:30:11,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 68 transitions, 154 flow [2024-11-22 13:30:11,928 INFO L124 PetriNetUnfolderBase]: 9/76 cut-off events. [2024-11-22 13:30:11,929 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-22 13:30:11,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 9/76 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 221 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 63. Up to 4 conditions per place. [2024-11-22 13:30:11,932 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 68 transitions, 154 flow [2024-11-22 13:30:11,934 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 68 transitions, 154 flow [2024-11-22 13:30:11,936 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:30:11,937 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;@28faf9f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:30:11,938 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-22 13:30:11,951 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:30:11,952 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2024-11-22 13:30:11,952 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-22 13:30:11,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:30:11,952 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-22 13:30:11,952 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-22 13:30:11,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:30:11,953 INFO L85 PathProgramCache]: Analyzing trace with hash -710098594, now seen corresponding path program 1 times [2024-11-22 13:30:11,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:30:11,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146116954] [2024-11-22 13:30:11,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:30:11,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:30:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 13:30:12,160 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 13:30:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 13:30:12,182 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 13:30:12,182 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 13:30:12,182 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-22 13:30:12,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-22 13:30:12,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-22 13:30:12,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-22 13:30:12,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-22 13:30:12,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:30:12,184 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-22 13:30:12,184 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 13:30:12,184 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-22 13:30:12,208 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 13:30:12,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 89 transitions, 206 flow [2024-11-22 13:30:12,223 INFO L124 PetriNetUnfolderBase]: 12/100 cut-off events. [2024-11-22 13:30:12,224 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-22 13:30:12,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 100 events. 12/100 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 311 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 88. Up to 5 conditions per place. [2024-11-22 13:30:12,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 89 transitions, 206 flow [2024-11-22 13:30:12,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 89 transitions, 206 flow [2024-11-22 13:30:12,227 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:30:12,228 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;@28faf9f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:30:12,228 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-22 13:30:12,234 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:30:12,234 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2024-11-22 13:30:12,234 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-22 13:30:12,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:30:12,235 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:30:12,235 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-22 13:30:12,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:30:12,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1277391799, now seen corresponding path program 1 times [2024-11-22 13:30:12,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:30:12,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141741815] [2024-11-22 13:30:12,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:30:12,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:30:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:30:12,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:30:12,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:30:12,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141741815] [2024-11-22 13:30:12,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141741815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:30:12,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:30:12,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:30:12,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151465766] [2024-11-22 13:30:12,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:30:12,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 13:30:12,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:30:12,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 13:30:12,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 13:30:12,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 89 [2024-11-22 13:30:12,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 206 flow. Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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) [2024-11-22 13:30:12,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:30:12,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 89 [2024-11-22 13:30:12,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:30:27,191 INFO L124 PetriNetUnfolderBase]: 119631/194560 cut-off events. [2024-11-22 13:30:27,191 INFO L125 PetriNetUnfolderBase]: For 11318/11318 co-relation queries the response was YES. [2024-11-22 13:30:27,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352886 conditions, 194560 events. 119631/194560 cut-off events. For 11318/11318 co-relation queries the response was YES. Maximal size of possible extension queue 4784. Compared 1838692 event pairs, 106668 based on Foata normal form. 11679/195437 useless extension candidates. Maximal degree in co-relation 60764. Up to 152889 conditions per place. [2024-11-22 13:30:28,720 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 43 selfloop transitions, 0 changer transitions 0/76 dead transitions. [2024-11-22 13:30:28,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 266 flow [2024-11-22 13:30:28,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 13:30:28,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-22 13:30:28,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 122 transitions. [2024-11-22 13:30:28,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6853932584269663 [2024-11-22 13:30:28,732 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 206 flow. Second operand 2 states and 122 transitions. [2024-11-22 13:30:28,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 266 flow [2024-11-22 13:30:28,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 76 transitions, 260 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-22 13:30:28,752 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 174 flow [2024-11-22 13:30:28,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=174, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2024-11-22 13:30:28,756 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2024-11-22 13:30:28,757 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 174 flow [2024-11-22 13:30:28,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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) [2024-11-22 13:30:28,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:30:28,757 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-11-22 13:30:28,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:30:28,758 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-22 13:30:28,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:30:28,758 INFO L85 PathProgramCache]: Analyzing trace with hash 596429100, now seen corresponding path program 1 times [2024-11-22 13:30:28,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:30:28,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892026392] [2024-11-22 13:30:28,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:30:28,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:30:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 13:30:29,139 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 13:30:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 13:30:29,164 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 13:30:29,165 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 13:30:29,165 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-22 13:30:29,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-11-22 13:30:29,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-11-22 13:30:29,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-11-22 13:30:29,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-22 13:30:29,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-22 13:30:29,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:30:29,166 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-22 13:30:29,166 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-22 13:30:29,167 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-22 13:30:29,199 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-22 13:30:29,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 110 transitions, 260 flow [2024-11-22 13:30:29,216 INFO L124 PetriNetUnfolderBase]: 15/124 cut-off events. [2024-11-22 13:30:29,216 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-22 13:30:29,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 124 events. 15/124 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 415 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 118. Up to 6 conditions per place. [2024-11-22 13:30:29,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 110 transitions, 260 flow [2024-11-22 13:30:29,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 110 transitions, 260 flow [2024-11-22 13:30:29,219 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:30:29,219 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;@28faf9f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:30:29,220 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-22 13:30:29,224 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:30:29,224 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2024-11-22 13:30:29,224 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-22 13:30:29,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:30:29,224 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:30:29,225 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-22 13:30:29,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:30:29,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1905667129, now seen corresponding path program 1 times [2024-11-22 13:30:29,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:30:29,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063932819] [2024-11-22 13:30:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:30:29,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:30:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:30:29,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:30:29,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:30:29,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063932819] [2024-11-22 13:30:29,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063932819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:30:29,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:30:29,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 13:30:29,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860959656] [2024-11-22 13:30:29,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:30:29,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 13:30:29,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:30:29,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 13:30:29,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 13:30:29,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 110 [2024-11-22 13:30:29,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 110 transitions, 260 flow. Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 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) [2024-11-22 13:30:29,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:30:29,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 110 [2024-11-22 13:30:29,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand