/root/.sdkman/candidates/java/current/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf --buchiautomizer.automaton.type.for.concurrent.programs BUCHI_PETRI_NET --buchiautomizer.use.buchi.petri.net.intersection.optimizations true --buchiautomizer.use.automata.for.buchi.petri.net.emptiness.check true -tc ../../../trunk/examples/toolchains/BuchiAutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2023/acq-work-6threads.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.3-?-9ecb849-m [2024-02-10 00:24:23,366 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-10 00:24:23,505 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf [2024-02-10 00:24:23,512 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-10 00:24:23,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-10 00:24:23,513 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.Only consider context switches at boundaries of atomic blocks [2024-02-10 00:24:23,581 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-10 00:24:23,581 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-10 00:24:23,582 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-10 00:24:23,582 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-10 00:24:23,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-10 00:24:23,583 INFO L153 SettingsManager]: * Use SBE=true [2024-02-10 00:24:23,583 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-02-10 00:24:23,584 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-02-10 00:24:23,586 INFO L153 SettingsManager]: * Use old map elimination=false [2024-02-10 00:24:23,586 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-02-10 00:24:23,587 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-02-10 00:24:23,590 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-02-10 00:24:23,590 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-10 00:24:23,591 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-02-10 00:24:23,592 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-10 00:24:23,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-10 00:24:23,608 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-10 00:24:23,608 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-10 00:24:23,609 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-02-10 00:24:23,609 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-02-10 00:24:23,609 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-02-10 00:24:23,609 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-02-10 00:24:23,610 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-10 00:24:23,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-10 00:24:23,611 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-02-10 00:24:23,611 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-10 00:24:23,611 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-10 00:24:23,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-10 00:24:23,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-10 00:24:23,612 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-10 00:24:23,612 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-10 00:24:23,613 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-02-10 00:24:23,613 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_PETRI_NET Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Use Buchi Petri Net Intersection Optimizations -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Use automata for Buchi Petri Net emptiness check -> true [2024-02-10 00:24:24,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-10 00:24:24,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-10 00:24:24,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-10 00:24:24,225 INFO L270 PluginConnector]: Initializing Boogie PL CUP Parser... [2024-02-10 00:24:24,226 INFO L274 PluginConnector]: Boogie PL CUP Parser initialized [2024-02-10 00:24:24,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/acq-work-6threads.bpl [2024-02-10 00:24:24,228 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2023/acq-work-6threads.bpl' [2024-02-10 00:24:24,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-10 00:24:24,268 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-02-10 00:24:24,272 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-10 00:24:24,273 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-10 00:24:24,273 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-10 00:24:24,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "acq-work-6threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:24" (1/1) ... [2024-02-10 00:24:24,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "acq-work-6threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:24" (1/1) ... [2024-02-10 00:24:24,338 INFO L138 Inliner]: procedures = 4, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2024-02-10 00:24:24,340 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-10 00:24:24,381 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-10 00:24:24,381 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-10 00:24:24,382 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-10 00:24:24,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "acq-work-6threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:24" (1/1) ... [2024-02-10 00:24:24,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "acq-work-6threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:24" (1/1) ... [2024-02-10 00:24:24,434 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "acq-work-6threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:24" (1/1) ... [2024-02-10 00:24:24,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "acq-work-6threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:24" (1/1) ... [2024-02-10 00:24:24,436 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "acq-work-6threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:24" (1/1) ... [2024-02-10 00:24:24,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "acq-work-6threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:24" (1/1) ... [2024-02-10 00:24:24,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "acq-work-6threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:24" (1/1) ... [2024-02-10 00:24:24,440 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "acq-work-6threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:24" (1/1) ... [2024-02-10 00:24:24,441 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-10 00:24:24,442 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-10 00:24:24,442 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-10 00:24:24,442 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-10 00:24:24,461 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "acq-work-6threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:24" (1/1) ... [2024-02-10 00:24:24,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-10 00:24:24,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-10 00:24:24,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-02-10 00:24:24,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-02-10 00:24:24,688 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2024-02-10 00:24:24,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-10 00:24:24,689 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-10 00:24:24,689 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2024-02-10 00:24:24,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-10 00:24:24,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-10 00:24:24,689 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1WithAssert given in one single declaration [2024-02-10 00:24:24,689 INFO L130 BoogieDeclarations]: Found specification of procedure thread1WithAssert [2024-02-10 00:24:24,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1WithAssert [2024-02-10 00:24:24,690 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-10 00:24:24,816 INFO L236 CfgBuilder]: Building ICFG [2024-02-10 00:24:24,830 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-10 00:24:25,056 INFO L277 CfgBuilder]: Performing block encoding [2024-02-10 00:24:25,099 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-10 00:24:25,100 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2024-02-10 00:24:25,102 INFO L201 PluginConnector]: Adding new model acq-work-6threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 12:24:25 BoogieIcfgContainer [2024-02-10 00:24:25,102 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-10 00:24:25,103 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-02-10 00:24:25,103 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-02-10 00:24:25,127 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-02-10 00:24:25,128 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-10 00:24:25,128 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "acq-work-6threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 12:24:24" (1/2) ... [2024-02-10 00:24:25,130 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b4f08c9 and model type acq-work-6threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.02 12:24:25, skipping insertion in model container [2024-02-10 00:24:25,130 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-10 00:24:25,130 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "acq-work-6threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 12:24:25" (2/2) ... [2024-02-10 00:24:25,132 INFO L332 chiAutomizerObserver]: Analyzing ICFG acq-work-6threads.bpl [2024-02-10 00:24:25,332 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-02-10 00:24:25,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 99 transitions, 240 flow [2024-02-10 00:24:25,450 INFO L124 PetriNetUnfolderBase]: 12/87 cut-off events. [2024-02-10 00:24:25,450 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-10 00:24:25,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 87 events. 12/87 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 314 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2024-02-10 00:24:25,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 99 transitions, 240 flow [2024-02-10 00:24:25,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 87 transitions, 210 flow [2024-02-10 00:24:25,484 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2024-02-10 00:24:25,484 INFO L304 stractBuchiCegarLoop]: Hoare is false [2024-02-10 00:24:25,485 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-02-10 00:24:25,485 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-02-10 00:24:25,485 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-02-10 00:24:25,485 INFO L308 stractBuchiCegarLoop]: Difference is false [2024-02-10 00:24:25,485 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-02-10 00:24:25,485 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2024-02-10 00:24:25,485 INFO L139 chiPetriNetCegarLoop]: use automaton for emptiness check [2024-02-10 00:24:25,486 INFO L128 iNet2FiniteAutomaton]: Start buchiPetriNet2FiniteAutomaton. Operand has 94 places, 87 transitions, 210 flow