./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.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 d59c014df9ead169c56b7ae39b852ef0f17fdf8c183ee9a03f7bf209d03f772f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 06:52:09,709 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 06:52:09,796 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 06:52:09,801 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 06:52:09,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 06:52:09,831 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 06:52:09,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 06:52:09,834 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 06:52:09,835 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 06:52:09,835 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 06:52:09,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 06:52:09,836 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 06:52:09,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 06:52:09,839 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 06:52:09,839 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 06:52:09,840 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 06:52:09,842 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 06:52:09,842 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 06:52:09,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 06:52:09,847 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 06:52:09,847 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 06:52:09,847 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 06:52:09,848 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 06:52:09,848 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 06:52:09,848 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 06:52:09,848 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 06:52:09,849 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 06:52:09,849 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 06:52:09,849 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 06:52:09,850 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 06:52:09,850 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 06:52:09,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 06:52:09,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 06:52:09,851 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 06:52:09,851 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 06:52:09,852 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 06:52:09,852 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 06:52:09,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 06:52:09,853 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 06:52:09,853 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 06:52:09,853 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 06:52:09,854 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 06:52:09,854 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d59c014df9ead169c56b7ae39b852ef0f17fdf8c183ee9a03f7bf209d03f772f [2024-10-13 06:52:10,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 06:52:10,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 06:52:10,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 06:52:10,155 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 06:52:10,156 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 06:52:10,158 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.i [2024-10-13 06:52:11,671 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 06:52:11,938 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 06:52:11,939 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur-pthread.i [2024-10-13 06:52:11,960 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b343306e/2b5c10fb4f72444d9b78987b38dcf9a0/FLAGde5eb7fe6 [2024-10-13 06:52:11,975 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b343306e/2b5c10fb4f72444d9b78987b38dcf9a0 [2024-10-13 06:52:11,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 06:52:11,979 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 06:52:11,981 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 06:52:11,981 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 06:52:11,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 06:52:11,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:52:11" (1/1) ... [2024-10-13 06:52:11,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35bfde8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:52:11, skipping insertion in model container [2024-10-13 06:52:11,992 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:52:11" (1/1) ... [2024-10-13 06:52:12,048 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 06:52:12,393 WARN L248 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-pthread.i[31052,31065] [2024-10-13 06:52:12,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 06:52:12,423 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 06:52:12,562 WARN L248 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-pthread.i[31052,31065] [2024-10-13 06:52:12,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 06:52:12,599 INFO L204 MainTranslator]: Completed translation [2024-10-13 06:52:12,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:52:12 WrapperNode [2024-10-13 06:52:12,600 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 06:52:12,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 06:52:12,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 06:52:12,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 06:52:12,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:52:12" (1/1) ... [2024-10-13 06:52:12,629 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:52:12" (1/1) ... [2024-10-13 06:52:12,654 INFO L138 Inliner]: procedures = 165, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 84 [2024-10-13 06:52:12,655 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 06:52:12,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 06:52:12,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 06:52:12,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 06:52:12,669 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:52:12" (1/1) ... [2024-10-13 06:52:12,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:52:12" (1/1) ... [2024-10-13 06:52:12,673 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:52:12" (1/1) ... [2024-10-13 06:52:12,693 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]. [2024-10-13 06:52:12,693 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:52:12" (1/1) ... [2024-10-13 06:52:12,694 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:52:12" (1/1) ... [2024-10-13 06:52:12,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:52:12" (1/1) ... [2024-10-13 06:52:12,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:52:12" (1/1) ... [2024-10-13 06:52:12,704 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:52:12" (1/1) ... [2024-10-13 06:52:12,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:52:12" (1/1) ... [2024-10-13 06:52:12,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 06:52:12,709 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 06:52:12,709 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 06:52:12,709 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 06:52:12,710 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:52:12" (1/1) ... [2024-10-13 06:52:12,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 06:52:12,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:52:12,745 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) [2024-10-13 06:52:12,751 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 [2024-10-13 06:52:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 06:52:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 06:52:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 06:52:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-13 06:52:12,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-13 06:52:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 06:52:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 06:52:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 06:52:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 06:52:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 06:52:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 06:52:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 06:52:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 06:52:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 06:52:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 06:52:12,808 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 06:52:12,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 06:52:12,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 06:52:12,810 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 06:52:12,979 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 06:52:12,982 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 06:52:13,207 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 06:52:13,209 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 06:52:13,352 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 06:52:13,352 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 06:52:13,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:52:13 BoogieIcfgContainer [2024-10-13 06:52:13,353 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 06:52:13,356 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 06:52:13,356 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 06:52:13,361 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 06:52:13,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:52:11" (1/3) ... [2024-10-13 06:52:13,362 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddab126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:52:13, skipping insertion in model container [2024-10-13 06:52:13,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:52:12" (2/3) ... [2024-10-13 06:52:13,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ddab126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:52:13, skipping insertion in model container [2024-10-13 06:52:13,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:52:13" (3/3) ... [2024-10-13 06:52:13,364 INFO L112 eAbstractionObserver]: Analyzing ICFG 37_stack_lock_p0_vs_concur-pthread.i [2024-10-13 06:52:13,383 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 06:52:13,383 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 06:52:13,383 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 06:52:13,432 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 06:52:13,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 26 transitions, 56 flow [2024-10-13 06:52:13,497 INFO L124 PetriNetUnfolderBase]: 3/28 cut-off events. [2024-10-13 06:52:13,498 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 06:52:13,500 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. [2024-10-13 06:52:13,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 26 transitions, 56 flow [2024-10-13 06:52:13,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 26 transitions, 56 flow [2024-10-13 06:52:13,512 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 06:52:13,519 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;@25dd0d4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 06:52:13,520 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-13 06:52:13,525 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 06:52:13,525 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-10-13 06:52:13,526 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 06:52:13,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:52:13,527 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-13 06:52:13,527 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 06:52:13,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:52:13,536 INFO L85 PathProgramCache]: Analyzing trace with hash -782822785, now seen corresponding path program 1 times [2024-10-13 06:52:13,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:52:13,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795259602] [2024-10-13 06:52:13,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:52:13,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:52:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 06:52:13,652 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 06:52:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 06:52:13,706 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 06:52:13,708 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 06:52:13,709 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-10-13 06:52:13,712 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-10-13 06:52:13,713 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-10-13 06:52:13,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 06:52:13,714 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-13 06:52:13,720 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 06:52:13,721 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 06:52:13,747 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 06:52:13,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 47 transitions, 104 flow [2024-10-13 06:52:13,774 INFO L124 PetriNetUnfolderBase]: 6/52 cut-off events. [2024-10-13 06:52:13,775 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 06:52:13,781 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. [2024-10-13 06:52:13,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 47 transitions, 104 flow [2024-10-13 06:52:13,782 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 47 transitions, 104 flow [2024-10-13 06:52:13,783 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 06:52:13,785 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;@25dd0d4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 06:52:13,785 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-13 06:52:13,793 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 06:52:13,794 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2024-10-13 06:52:13,794 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 06:52:13,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:52:13,794 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-13 06:52:13,795 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)] === [2024-10-13 06:52:13,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:52:13,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1714931032, now seen corresponding path program 1 times [2024-10-13 06:52:13,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:52:13,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897031604] [2024-10-13 06:52:13,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:52:13,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:52:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 06:52:13,826 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 06:52:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 06:52:13,855 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 06:52:13,855 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 06:52:13,856 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-10-13 06:52:13,856 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-10-13 06:52:13,856 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-10-13 06:52:13,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-10-13 06:52:13,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 06:52:13,857 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-13 06:52:13,858 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 06:52:13,858 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 06:52:13,922 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 06:52:13,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 68 transitions, 154 flow [2024-10-13 06:52:13,977 INFO L124 PetriNetUnfolderBase]: 9/76 cut-off events. [2024-10-13 06:52:13,978 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-13 06:52:13,980 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. [2024-10-13 06:52:13,982 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 68 transitions, 154 flow [2024-10-13 06:52:13,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 68 transitions, 154 flow [2024-10-13 06:52:13,986 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 06:52:13,989 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;@25dd0d4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 06:52:13,990 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-13 06:52:14,005 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 06:52:14,007 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2024-10-13 06:52:14,008 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-13 06:52:14,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:52:14,008 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-10-13 06:52:14,009 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)] === [2024-10-13 06:52:14,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:52:14,010 INFO L85 PathProgramCache]: Analyzing trace with hash -30908066, now seen corresponding path program 1 times [2024-10-13 06:52:14,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:52:14,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637043959] [2024-10-13 06:52:14,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:52:14,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:52:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 06:52:14,061 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 06:52:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 06:52:14,108 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 06:52:14,109 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 06:52:14,109 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-10-13 06:52:14,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-10-13 06:52:14,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-10-13 06:52:14,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-10-13 06:52:14,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-10-13 06:52:14,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 06:52:14,114 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-13 06:52:14,116 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 06:52:14,119 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-13 06:52:14,181 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 06:52:14,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 89 transitions, 206 flow [2024-10-13 06:52:14,223 INFO L124 PetriNetUnfolderBase]: 12/100 cut-off events. [2024-10-13 06:52:14,223 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-13 06:52:14,225 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. [2024-10-13 06:52:14,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 89 transitions, 206 flow [2024-10-13 06:52:14,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 89 transitions, 206 flow [2024-10-13 06:52:14,233 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 06:52:14,234 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;@25dd0d4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 06:52:14,235 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-13 06:52:14,292 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 06:52:14,294 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2024-10-13 06:52:14,294 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-13 06:52:14,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:52:14,294 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:52:14,295 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-10-13 06:52:14,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:52:14,296 INFO L85 PathProgramCache]: Analyzing trace with hash 857461559, now seen corresponding path program 1 times [2024-10-13 06:52:14,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:52:14,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287619748] [2024-10-13 06:52:14,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:52:14,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:52:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:52:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:52:14,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:52:14,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287619748] [2024-10-13 06:52:14,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287619748] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:52:14,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:52:14,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 06:52:14,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300853658] [2024-10-13 06:52:14,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:52:14,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 06:52:14,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:52:14,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 06:52:14,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 06:52:14,467 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 89 [2024-10-13 06:52:14,470 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) [2024-10-13 06:52:14,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:52:14,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 89 [2024-10-13 06:52:14,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:52:33,466 INFO L124 PetriNetUnfolderBase]: 119631/194560 cut-off events. [2024-10-13 06:52:33,466 INFO L125 PetriNetUnfolderBase]: For 11318/11318 co-relation queries the response was YES. [2024-10-13 06:52:33,944 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. [2024-10-13 06:52:35,271 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 43 selfloop transitions, 0 changer transitions 0/76 dead transitions. [2024-10-13 06:52:35,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 266 flow [2024-10-13 06:52:35,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 06:52:35,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 06:52:35,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 122 transitions. [2024-10-13 06:52:35,286 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6853932584269663 [2024-10-13 06:52:35,288 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 206 flow. Second operand 2 states and 122 transitions. [2024-10-13 06:52:35,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 266 flow [2024-10-13 06:52:35,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 76 transitions, 260 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-13 06:52:35,312 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 174 flow [2024-10-13 06:52:35,314 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} [2024-10-13 06:52:35,318 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2024-10-13 06:52:35,320 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 174 flow [2024-10-13 06:52:35,320 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) [2024-10-13 06:52:35,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:52:35,320 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-10-13 06:52:35,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 06:52:35,321 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)] === [2024-10-13 06:52:35,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:52:35,322 INFO L85 PathProgramCache]: Analyzing trace with hash 770390188, now seen corresponding path program 1 times [2024-10-13 06:52:35,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:52:35,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073559115] [2024-10-13 06:52:35,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:52:35,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:52:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 06:52:35,359 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 06:52:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 06:52:35,385 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 06:52:35,388 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 06:52:35,388 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-10-13 06:52:35,388 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-10-13 06:52:35,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-10-13 06:52:35,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-10-13 06:52:35,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-10-13 06:52:35,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-10-13 06:52:35,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 06:52:35,390 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-13 06:52:35,391 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 06:52:35,392 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-13 06:52:35,452 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 06:52:35,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 110 transitions, 260 flow [2024-10-13 06:52:35,491 INFO L124 PetriNetUnfolderBase]: 15/124 cut-off events. [2024-10-13 06:52:35,492 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-13 06:52:35,494 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. [2024-10-13 06:52:35,494 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 110 transitions, 260 flow [2024-10-13 06:52:35,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 110 transitions, 260 flow [2024-10-13 06:52:35,499 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 06:52:35,501 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;@25dd0d4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 06:52:35,503 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-13 06:52:35,511 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 06:52:35,511 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2024-10-13 06:52:35,512 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-13 06:52:35,512 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:52:35,512 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:52:35,512 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-10-13 06:52:35,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:52:35,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1485736889, now seen corresponding path program 1 times [2024-10-13 06:52:35,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:52:35,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163592586] [2024-10-13 06:52:35,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:52:35,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:52:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:52:35,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:52:35,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:52:35,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163592586] [2024-10-13 06:52:35,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163592586] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:52:35,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:52:35,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 06:52:35,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478645926] [2024-10-13 06:52:35,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:52:35,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 06:52:35,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:52:35,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 06:52:35,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 06:52:35,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 110 [2024-10-13 06:52:35,567 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) [2024-10-13 06:52:35,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:52:35,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 110 [2024-10-13 06:52:35,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand