./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c -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 a107795e01eed1ee79fba30cb5022ee32b5d5a3711e8a094ab0bb165fd3efa7a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:47:08,475 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:47:08,529 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:47:08,532 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:47:08,532 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:47:08,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:47:08,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:47:08,549 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:47:08,550 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:47:08,550 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:47:08,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:47:08,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:47:08,551 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:47:08,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:47:08,553 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:47:08,554 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:47:08,554 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:47:08,554 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:47:08,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:47:08,554 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:47:08,555 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:47:08,558 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:47:08,559 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:47:08,559 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:47:08,559 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:47:08,559 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:47:08,559 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:47:08,559 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:47:08,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:47:08,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:47:08,560 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:47:08,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:47:08,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:47:08,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:47:08,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:47:08,560 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:47:08,560 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:47:08,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:47:08,561 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:47:08,561 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:47:08,561 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:47:08,563 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:47:08,563 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a107795e01eed1ee79fba30cb5022ee32b5d5a3711e8a094ab0bb165fd3efa7a [2024-11-19 01:47:08,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:47:08,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:47:08,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:47:08,800 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:47:08,800 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:47:08,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c [2024-11-19 01:47:10,100 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:47:10,277 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:47:10,278 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier-loop.wvr.c [2024-11-19 01:47:10,286 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb04c019f/bc4c7e917ff34e4e9478c6833410cda3/FLAGdbf5ede8b [2024-11-19 01:47:10,302 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb04c019f/bc4c7e917ff34e4e9478c6833410cda3 [2024-11-19 01:47:10,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:47:10,306 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:47:10,307 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:47:10,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:47:10,312 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:47:10,313 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:10" (1/1) ... [2024-11-19 01:47:10,314 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ed93b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:10, skipping insertion in model container [2024-11-19 01:47:10,314 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:47:10" (1/1) ... [2024-11-19 01:47:10,340 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:47:10,547 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/weaver/parallel-barrier-loop.wvr.c[3922,3935] [2024-11-19 01:47:10,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:47:10,558 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:47:10,578 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/weaver/parallel-barrier-loop.wvr.c[3922,3935] [2024-11-19 01:47:10,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:47:10,593 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:47:10,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:10 WrapperNode [2024-11-19 01:47:10,594 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:47:10,595 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:47:10,595 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:47:10,595 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:47:10,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:10" (1/1) ... [2024-11-19 01:47:10,608 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:10" (1/1) ... [2024-11-19 01:47:10,628 INFO L138 Inliner]: procedures = 22, calls = 22, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 227 [2024-11-19 01:47:10,628 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:47:10,629 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:47:10,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:47:10,629 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:47:10,638 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:10" (1/1) ... [2024-11-19 01:47:10,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:10" (1/1) ... [2024-11-19 01:47:10,642 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:10" (1/1) ... [2024-11-19 01:47:10,666 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 01:47:10,667 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:10" (1/1) ... [2024-11-19 01:47:10,667 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:10" (1/1) ... [2024-11-19 01:47:10,676 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:10" (1/1) ... [2024-11-19 01:47:10,682 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:10" (1/1) ... [2024-11-19 01:47:10,683 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:10" (1/1) ... [2024-11-19 01:47:10,688 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:10" (1/1) ... [2024-11-19 01:47:10,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:47:10,694 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:47:10,694 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:47:10,694 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:47:10,695 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:10" (1/1) ... [2024-11-19 01:47:10,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:47:10,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:10,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 01:47:10,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 01:47:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:47:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:47:10,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:47:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:47:10,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:47:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 01:47:10,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 01:47:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-19 01:47:10,758 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-19 01:47:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:47:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-19 01:47:10,759 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-19 01:47:10,759 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-11-19 01:47:10,759 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-11-19 01:47:10,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:47:10,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:47:10,760 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:47:10,849 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:47:10,851 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:47:11,135 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:47:11,136 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:47:11,296 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:47:11,297 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 01:47:11,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:11 BoogieIcfgContainer [2024-11-19 01:47:11,297 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:47:11,299 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:47:11,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:47:11,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:47:11,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:47:10" (1/3) ... [2024-11-19 01:47:11,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6315088f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:11, skipping insertion in model container [2024-11-19 01:47:11,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:47:10" (2/3) ... [2024-11-19 01:47:11,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6315088f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:47:11, skipping insertion in model container [2024-11-19 01:47:11,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:47:11" (3/3) ... [2024-11-19 01:47:11,307 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier-loop.wvr.c [2024-11-19 01:47:11,322 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:47:11,322 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:47:11,322 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:47:11,405 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-11-19 01:47:11,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 112 transitions, 290 flow [2024-11-19 01:47:11,484 INFO L124 PetriNetUnfolderBase]: 12/100 cut-off events. [2024-11-19 01:47:11,485 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-19 01:47:11,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 100 events. 12/100 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 235 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 95. Up to 3 conditions per place. [2024-11-19 01:47:11,491 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 112 transitions, 290 flow [2024-11-19 01:47:11,497 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 99 transitions, 246 flow [2024-11-19 01:47:11,505 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:47:11,513 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;@11a1b588, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:47:11,513 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-19 01:47:11,541 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:47:11,541 INFO L124 PetriNetUnfolderBase]: 12/98 cut-off events. [2024-11-19 01:47:11,541 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-19 01:47:11,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:11,542 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:11,542 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-19 01:47:11,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:11,547 INFO L85 PathProgramCache]: Analyzing trace with hash -43939636, now seen corresponding path program 1 times [2024-11-19 01:47:11,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:11,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137719573] [2024-11-19 01:47:11,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:11,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:11,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:11,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:11,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137719573] [2024-11-19 01:47:11,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137719573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:11,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:11,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:47:11,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445479930] [2024-11-19 01:47:11,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:11,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 01:47:11,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:11,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 01:47:11,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:47:11,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 116 [2024-11-19 01:47:11,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 99 transitions, 246 flow. Second operand has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:11,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:11,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 116 [2024-11-19 01:47:11,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:23,576 INFO L124 PetriNetUnfolderBase]: 133137/182039 cut-off events. [2024-11-19 01:47:23,576 INFO L125 PetriNetUnfolderBase]: For 14088/14088 co-relation queries the response was YES. [2024-11-19 01:47:24,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362326 conditions, 182039 events. 133137/182039 cut-off events. For 14088/14088 co-relation queries the response was YES. Maximal size of possible extension queue 5901. Compared 1308012 event pairs, 113708 based on Foata normal form. 0/155730 useless extension candidates. Maximal degree in co-relation 361278. Up to 164047 conditions per place. [2024-11-19 01:47:25,018 INFO L140 encePairwiseOnDemand]: 112/116 looper letters, 62 selfloop transitions, 0 changer transitions 0/95 dead transitions. [2024-11-19 01:47:25,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 95 transitions, 362 flow [2024-11-19 01:47:25,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 01:47:25,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 01:47:25,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 144 transitions. [2024-11-19 01:47:25,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2024-11-19 01:47:25,030 INFO L175 Difference]: Start difference. First operand has 106 places, 99 transitions, 246 flow. Second operand 2 states and 144 transitions. [2024-11-19 01:47:25,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 95 transitions, 362 flow [2024-11-19 01:47:25,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 95 transitions, 330 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-19 01:47:25,563 INFO L231 Difference]: Finished difference. Result has 95 places, 95 transitions, 206 flow [2024-11-19 01:47:25,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=206, PETRI_PLACES=95, PETRI_TRANSITIONS=95} [2024-11-19 01:47:25,572 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -11 predicate places. [2024-11-19 01:47:25,572 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 95 transitions, 206 flow [2024-11-19 01:47:25,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:25,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:25,573 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:25,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:47:25,573 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-11-19 01:47:25,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:25,574 INFO L85 PathProgramCache]: Analyzing trace with hash 219855244, now seen corresponding path program 1 times [2024-11-19 01:47:25,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:25,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981679747] [2024-11-19 01:47:25,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:25,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:25,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:25,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981679747] [2024-11-19 01:47:25,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981679747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:25,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:25,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:47:25,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164287316] [2024-11-19 01:47:25,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:25,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:47:25,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:25,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:47:25,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:47:25,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 116 [2024-11-19 01:47:25,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 95 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:25,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:25,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 116 [2024-11-19 01:47:25,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand