./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/peterson.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-atomic/peterson.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 6ea11bc1281710e3131473f2a673d7d78c2a42824b03a7d695132107cc74f895 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:24:11,069 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:24:11,159 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:24:11,165 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:24:11,166 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:24:11,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:24:11,204 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:24:11,205 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:24:11,206 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:24:11,207 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:24:11,207 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:24:11,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:24:11,208 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:24:11,208 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:24:11,209 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:24:11,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:24:11,211 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:24:11,212 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:24:11,212 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:24:11,212 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:24:11,212 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:24:11,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:24:11,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:24:11,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:24:11,217 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:24:11,217 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:24:11,217 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:24:11,218 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:24:11,218 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:24:11,218 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:24:11,218 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:24:11,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:24:11,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:24:11,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:24:11,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:24:11,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:24:11,220 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:24:11,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:24:11,220 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:24:11,222 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:24:11,222 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:24:11,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:24:11,224 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ea11bc1281710e3131473f2a673d7d78c2a42824b03a7d695132107cc74f895 [2024-11-09 02:24:11,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:24:11,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:24:11,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:24:11,528 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:24:11,528 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:24:11,530 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/peterson.i [2024-11-09 02:24:13,021 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:24:13,307 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:24:13,308 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/peterson.i [2024-11-09 02:24:13,322 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/788a037e5/e22a4117eb824a7db5774918b7d29e15/FLAG1c0363435 [2024-11-09 02:24:13,341 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/788a037e5/e22a4117eb824a7db5774918b7d29e15 [2024-11-09 02:24:13,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:24:13,346 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:24:13,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:24:13,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:24:13,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:24:13,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:24:13" (1/1) ... [2024-11-09 02:24:13,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322c6c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:13, skipping insertion in model container [2024-11-09 02:24:13,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:24:13" (1/1) ... [2024-11-09 02:24:13,403 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:24:13,733 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/peterson.i[32348,32361] [2024-11-09 02:24:13,742 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/peterson.i[32502,32515] [2024-11-09 02:24:13,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:24:13,761 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:24:13,816 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/peterson.i[32348,32361] [2024-11-09 02:24:13,818 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/peterson.i[32502,32515] [2024-11-09 02:24:13,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:24:13,860 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:24:13,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:13 WrapperNode [2024-11-09 02:24:13,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:24:13,862 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:24:13,862 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:24:13,862 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:24:13,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:13" (1/1) ... [2024-11-09 02:24:13,885 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:13" (1/1) ... [2024-11-09 02:24:13,903 INFO L138 Inliner]: procedures = 166, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2024-11-09 02:24:13,903 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:24:13,906 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:24:13,906 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:24:13,906 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:24:13,915 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:13" (1/1) ... [2024-11-09 02:24:13,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:13" (1/1) ... [2024-11-09 02:24:13,918 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:13" (1/1) ... [2024-11-09 02:24:13,929 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]. [2024-11-09 02:24:13,929 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:13" (1/1) ... [2024-11-09 02:24:13,929 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:13" (1/1) ... [2024-11-09 02:24:13,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:13" (1/1) ... [2024-11-09 02:24:13,942 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:13" (1/1) ... [2024-11-09 02:24:13,943 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:13" (1/1) ... [2024-11-09 02:24:13,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:13" (1/1) ... [2024-11-09 02:24:13,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:24:13,950 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:24:13,950 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:24:13,950 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:24:13,951 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:13" (1/1) ... [2024-11-09 02:24:13,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:24:13,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:24:14,000 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) [2024-11-09 02:24:14,005 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 [2024-11-09 02:24:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-11-09 02:24:14,054 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-11-09 02:24:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-09 02:24:14,054 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-09 02:24:14,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:24:14,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:24:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:24:14,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:24:14,059 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:24:14,178 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:24:14,180 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:24:14,280 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:24:14,280 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:24:14,351 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:24:14,351 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 02:24:14,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:24:14 BoogieIcfgContainer [2024-11-09 02:24:14,352 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:24:14,354 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:24:14,354 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:24:14,357 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:24:14,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:24:13" (1/3) ... [2024-11-09 02:24:14,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da84e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:24:14, skipping insertion in model container [2024-11-09 02:24:14,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:13" (2/3) ... [2024-11-09 02:24:14,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da84e93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:24:14, skipping insertion in model container [2024-11-09 02:24:14,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:24:14" (3/3) ... [2024-11-09 02:24:14,360 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson.i [2024-11-09 02:24:14,373 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:24:14,374 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 02:24:14,374 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:24:14,421 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 02:24:14,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 32 transitions, 78 flow [2024-11-09 02:24:14,496 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-09 02:24:14,496 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:24:14,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 4/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-09 02:24:14,499 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 32 transitions, 78 flow [2024-11-09 02:24:14,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 28 transitions, 65 flow [2024-11-09 02:24:14,511 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:24:14,517 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;@39258a05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:24:14,518 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 02:24:14,524 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:24:14,525 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2024-11-09 02:24:14,525 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:24:14,525 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:24:14,526 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:24:14,526 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 02:24:14,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:24:14,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2145872066, now seen corresponding path program 1 times [2024-11-09 02:24:14,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:24:14,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166950666] [2024-11-09 02:24:14,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:24:14,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:24:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:24:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:24:14,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:24:14,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166950666] [2024-11-09 02:24:14,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166950666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:24:14,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:24:14,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:24:14,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368570743] [2024-11-09 02:24:14,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:24:14,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:24:14,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:24:14,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:24:14,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:24:14,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 32 [2024-11-09 02:24:14,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-09 02:24:14,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:24:14,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 32 [2024-11-09 02:24:14,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:24:15,001 INFO L124 PetriNetUnfolderBase]: 46/149 cut-off events. [2024-11-09 02:24:15,001 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-09 02:24:15,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 149 events. 46/149 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 696 event pairs, 16 based on Foata normal form. 35/173 useless extension candidates. Maximal degree in co-relation 224. Up to 53 conditions per place. [2024-11-09 02:24:15,005 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 13 selfloop transitions, 3 changer transitions 1/31 dead transitions. [2024-11-09 02:24:15,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 108 flow [2024-11-09 02:24:15,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:24:15,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:24:15,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-09 02:24:15,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-11-09 02:24:15,023 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 65 flow. Second operand 3 states and 70 transitions. [2024-11-09 02:24:15,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 108 flow [2024-11-09 02:24:15,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 101 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 02:24:15,030 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 76 flow [2024-11-09 02:24:15,031 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2024-11-09 02:24:15,036 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-11-09 02:24:15,037 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 76 flow [2024-11-09 02:24:15,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-09 02:24:15,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:24:15,037 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:24:15,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:24:15,038 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 02:24:15,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:24:15,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1574586633, now seen corresponding path program 1 times [2024-11-09 02:24:15,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:24:15,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502787308] [2024-11-09 02:24:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:24:15,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:24:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:24:15,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:24:15,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:24:15,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502787308] [2024-11-09 02:24:15,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502787308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:24:15,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:24:15,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:24:15,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317690326] [2024-11-09 02:24:15,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:24:15,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:24:15,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:24:15,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:24:15,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:24:15,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 32 [2024-11-09 02:24:15,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-09 02:24:15,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:24:15,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 32 [2024-11-09 02:24:15,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:24:15,226 INFO L124 PetriNetUnfolderBase]: 52/168 cut-off events. [2024-11-09 02:24:15,227 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-09 02:24:15,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 168 events. 52/168 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 788 event pairs, 28 based on Foata normal form. 13/175 useless extension candidates. Maximal degree in co-relation 167. Up to 80 conditions per place. [2024-11-09 02:24:15,229 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 12 selfloop transitions, 2 changer transitions 3/31 dead transitions. [2024-11-09 02:24:15,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 119 flow [2024-11-09 02:24:15,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:24:15,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:24:15,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-11-09 02:24:15,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-11-09 02:24:15,232 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 76 flow. Second operand 3 states and 67 transitions. [2024-11-09 02:24:15,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 119 flow [2024-11-09 02:24:15,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 113 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:24:15,236 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 80 flow [2024-11-09 02:24:15,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-11-09 02:24:15,237 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2024-11-09 02:24:15,237 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 80 flow [2024-11-09 02:24:15,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-09 02:24:15,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:24:15,238 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:24:15,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:24:15,238 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 02:24:15,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:24:15,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1780094252, now seen corresponding path program 1 times [2024-11-09 02:24:15,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:24:15,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352105861] [2024-11-09 02:24:15,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:24:15,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:24:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:24:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:24:15,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:24:15,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352105861] [2024-11-09 02:24:15,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352105861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:24:15,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:24:15,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:24:15,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208719081] [2024-11-09 02:24:15,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:24:15,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:24:15,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:24:15,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:24:15,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:24:15,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-11-09 02:24:15,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-11-09 02:24:15,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:24:15,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-11-09 02:24:15,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:24:15,436 INFO L124 PetriNetUnfolderBase]: 124/276 cut-off events. [2024-11-09 02:24:15,436 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-11-09 02:24:15,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 276 events. 124/276 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1216 event pairs, 35 based on Foata normal form. 15/282 useless extension candidates. Maximal degree in co-relation 507. Up to 94 conditions per place. [2024-11-09 02:24:15,440 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 21 selfloop transitions, 6 changer transitions 5/42 dead transitions. [2024-11-09 02:24:15,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 42 transitions, 184 flow [2024-11-09 02:24:15,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:24:15,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:24:15,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-11-09 02:24:15,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6328125 [2024-11-09 02:24:15,443 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 80 flow. Second operand 4 states and 81 transitions. [2024-11-09 02:24:15,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 42 transitions, 184 flow [2024-11-09 02:24:15,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:24:15,446 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 124 flow [2024-11-09 02:24:15,446 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-11-09 02:24:15,447 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-11-09 02:24:15,447 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 124 flow [2024-11-09 02:24:15,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-11-09 02:24:15,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:24:15,448 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:24:15,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:24:15,448 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 02:24:15,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:24:15,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1693191366, now seen corresponding path program 2 times [2024-11-09 02:24:15,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:24:15,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228887791] [2024-11-09 02:24:15,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:24:15,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:24:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:24:15,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:24:15,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:24:15,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228887791] [2024-11-09 02:24:15,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228887791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:24:15,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:24:15,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:24:15,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052750382] [2024-11-09 02:24:15,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:24:15,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 02:24:15,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:24:15,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 02:24:15,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 02:24:15,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-11-09 02:24:15,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-11-09 02:24:15,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:24:15,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-11-09 02:24:15,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:24:15,620 INFO L124 PetriNetUnfolderBase]: 119/244 cut-off events. [2024-11-09 02:24:15,620 INFO L125 PetriNetUnfolderBase]: For 118/130 co-relation queries the response was YES. [2024-11-09 02:24:15,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 244 events. 119/244 cut-off events. For 118/130 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 885 event pairs, 34 based on Foata normal form. 18/257 useless extension candidates. Maximal degree in co-relation 295. Up to 85 conditions per place. [2024-11-09 02:24:15,622 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2024-11-09 02:24:15,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 43 transitions, 235 flow [2024-11-09 02:24:15,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 02:24:15,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 02:24:15,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-11-09 02:24:15,624 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6328125 [2024-11-09 02:24:15,625 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 124 flow. Second operand 4 states and 81 transitions. [2024-11-09 02:24:15,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 43 transitions, 235 flow [2024-11-09 02:24:15,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 229 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-09 02:24:15,628 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2024-11-09 02:24:15,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2024-11-09 02:24:15,629 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2024-11-09 02:24:15,629 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2024-11-09 02:24:15,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2024-11-09 02:24:15,633 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2024-11-09 02:24:15,634 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-11-09 02:24:15,634 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2024-11-09 02:24:15,634 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-11-09 02:24:15,634 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-09 02:24:15,635 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-09 02:24:15,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:24:15,636 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-11-09 02:24:15,643 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-09 02:24:15,643 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 02:24:15,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 02:24:15 BasicIcfg [2024-11-09 02:24:15,653 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 02:24:15,655 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 02:24:15,655 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 02:24:15,656 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 02:24:15,656 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:24:14" (3/4) ... [2024-11-09 02:24:15,658 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 02:24:15,666 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2024-11-09 02:24:15,666 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2024-11-09 02:24:15,669 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2024-11-09 02:24:15,669 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-09 02:24:15,669 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 02:24:15,669 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-09 02:24:15,753 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 02:24:15,763 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 02:24:15,763 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 02:24:15,765 INFO L158 Benchmark]: Toolchain (without parser) took 2417.82ms. Allocated memory is still 174.1MB. Free memory was 143.8MB in the beginning and 140.8MB in the end (delta: 2.9MB). Peak memory consumption was 75.8MB. Max. memory is 16.1GB. [2024-11-09 02:24:15,765 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 130.0MB. Free memory is still 93.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 02:24:15,765 INFO L158 Benchmark]: CACSL2BoogieTranslator took 513.79ms. Allocated memory is still 174.1MB. Free memory was 143.8MB in the beginning and 121.6MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-09 02:24:15,766 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.95ms. Allocated memory is still 174.1MB. Free memory was 121.6MB in the beginning and 119.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 02:24:15,766 INFO L158 Benchmark]: Boogie Preprocessor took 43.82ms. Allocated memory is still 174.1MB. Free memory was 119.5MB in the beginning and 117.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 02:24:15,766 INFO L158 Benchmark]: RCFGBuilder took 401.66ms. Allocated memory is still 174.1MB. Free memory was 117.4MB in the beginning and 101.4MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 02:24:15,766 INFO L158 Benchmark]: TraceAbstraction took 1298.96ms. Allocated memory is still 174.1MB. Free memory was 100.7MB in the beginning and 73.6MB in the end (delta: 27.1MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2024-11-09 02:24:15,767 INFO L158 Benchmark]: Witness Printer took 107.77ms. Allocated memory is still 174.1MB. Free memory was 73.6MB in the beginning and 140.8MB in the end (delta: -67.2MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2024-11-09 02:24:15,771 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 130.0MB. Free memory is still 93.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 513.79ms. Allocated memory is still 174.1MB. Free memory was 143.8MB in the beginning and 121.6MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.95ms. Allocated memory is still 174.1MB. Free memory was 121.6MB in the beginning and 119.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.82ms. Allocated memory is still 174.1MB. Free memory was 119.5MB in the beginning and 117.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 401.66ms. Allocated memory is still 174.1MB. Free memory was 117.4MB in the beginning and 101.4MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1298.96ms. Allocated memory is still 174.1MB. Free memory was 100.7MB in the beginning and 73.6MB in the end (delta: 27.1MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. * Witness Printer took 107.77ms. Allocated memory is still 174.1MB. Free memory was 73.6MB in the beginning and 140.8MB in the end (delta: -67.2MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 748]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 739]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 58 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 142 IncrementalHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 11 mSDtfsCounter, 142 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=3, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 80 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-09 02:24:15,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE