./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe012_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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-wmm/safe012_tso.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 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:15:13,234 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:15:13,318 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:15:13,326 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:15:13,326 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:15:13,349 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:15:13,350 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:15:13,350 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:15:13,351 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:15:13,352 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:15:13,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:15:13,353 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:15:13,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:15:13,354 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:15:13,355 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:15:13,356 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:15:13,356 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:15:13,356 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:15:13,357 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:15:13,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:15:13,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:15:13,360 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:15:13,360 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:15:13,361 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:15:13,361 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:15:13,361 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:15:13,361 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:15:13,361 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:15:13,362 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:15:13,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:15:13,362 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:15:13,362 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:15:13,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:15:13,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:15:13,363 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:15:13,363 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:15:13,363 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:15:13,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:15:13,364 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:15:13,364 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:15:13,364 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:15:13,365 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:15:13,366 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd [2024-11-16 19:15:13,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:15:13,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:15:13,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:15:13,667 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:15:13,668 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:15:13,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe012_tso.i [2024-11-16 19:15:15,078 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:15:15,356 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:15:15,357 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe012_tso.i [2024-11-16 19:15:15,378 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e795d0e4a/c58b03eb6d764e65aa4962c149094b24/FLAG3b7e8010f [2024-11-16 19:15:15,660 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e795d0e4a/c58b03eb6d764e65aa4962c149094b24 [2024-11-16 19:15:15,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:15:15,663 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:15:15,664 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:15:15,664 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:15:15,669 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:15:15,669 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:15:15" (1/1) ... [2024-11-16 19:15:15,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f572b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:15, skipping insertion in model container [2024-11-16 19:15:15,670 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:15:15" (1/1) ... [2024-11-16 19:15:15,715 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:15:15,939 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-wmm/safe012_tso.i[945,958] [2024-11-16 19:15:16,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:15:16,127 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:15:16,141 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-wmm/safe012_tso.i[945,958] [2024-11-16 19:15:16,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:15:16,224 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:15:16,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:16 WrapperNode [2024-11-16 19:15:16,225 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:15:16,226 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:15:16,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:15:16,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:15:16,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:16" (1/1) ... [2024-11-16 19:15:16,247 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:16" (1/1) ... [2024-11-16 19:15:16,270 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2024-11-16 19:15:16,270 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:15:16,272 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:15:16,272 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:15:16,272 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:15:16,281 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:16" (1/1) ... [2024-11-16 19:15:16,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:16" (1/1) ... [2024-11-16 19:15:16,287 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:16" (1/1) ... [2024-11-16 19:15:16,315 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]. [2024-11-16 19:15:16,319 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:16" (1/1) ... [2024-11-16 19:15:16,320 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:16" (1/1) ... [2024-11-16 19:15:16,324 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:16" (1/1) ... [2024-11-16 19:15:16,328 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:16" (1/1) ... [2024-11-16 19:15:16,330 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:16" (1/1) ... [2024-11-16 19:15:16,331 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:16" (1/1) ... [2024-11-16 19:15:16,333 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:15:16,334 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:15:16,334 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:15:16,334 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:15:16,335 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:16" (1/1) ... [2024-11-16 19:15:16,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:15:16,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:15:16,370 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) [2024-11-16 19:15:16,373 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 [2024-11-16 19:15:16,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:15:16,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:15:16,423 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-16 19:15:16,423 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-16 19:15:16,423 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-16 19:15:16,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-16 19:15:16,424 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-16 19:15:16,424 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-16 19:15:16,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:15:16,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:15:16,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:15:16,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:15:16,427 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:15:16,552 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:15:16,554 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:15:16,703 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:15:16,703 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:15:16,800 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:15:16,800 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:15:16,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:15:16 BoogieIcfgContainer [2024-11-16 19:15:16,801 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:15:16,808 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:15:16,808 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:15:16,812 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:15:16,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:15:15" (1/3) ... [2024-11-16 19:15:16,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad212fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:15:16, skipping insertion in model container [2024-11-16 19:15:16,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:15:16" (2/3) ... [2024-11-16 19:15:16,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad212fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:15:16, skipping insertion in model container [2024-11-16 19:15:16,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:15:16" (3/3) ... [2024-11-16 19:15:16,817 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_tso.i [2024-11-16 19:15:16,833 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:15:16,833 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:15:16,833 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:15:16,882 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 19:15:16,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2024-11-16 19:15:16,960 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-11-16 19:15:16,963 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:15:16,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-11-16 19:15:16,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2024-11-16 19:15:16,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-11-16 19:15:16,985 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:15:16,992 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;@6a7378e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:15:16,992 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-16 19:15:17,013 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:15:17,015 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-11-16 19:15:17,015 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:15:17,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:15:17,016 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:15:17,016 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:15:17,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:15:17,022 INFO L85 PathProgramCache]: Analyzing trace with hash -372817892, now seen corresponding path program 1 times [2024-11-16 19:15:17,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:15:17,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234707856] [2024-11-16 19:15:17,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:15:17,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:15:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:15:17,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:15:17,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:15:17,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234707856] [2024-11-16 19:15:17,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234707856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:15:17,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:15:17,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:15:17,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527632141] [2024-11-16 19:15:17,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:15:17,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:15:17,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:15:17,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:15:17,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:15:17,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-11-16 19:15:17,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-11-16 19:15:17,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:15:17,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-11-16 19:15:17,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:15:18,371 INFO L124 PetriNetUnfolderBase]: 3471/5279 cut-off events. [2024-11-16 19:15:18,372 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-16 19:15:18,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10486 conditions, 5279 events. 3471/5279 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 28656 event pairs, 535 based on Foata normal form. 216/5492 useless extension candidates. Maximal degree in co-relation 10475. Up to 3001 conditions per place. [2024-11-16 19:15:18,415 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 55 selfloop transitions, 5 changer transitions 1/65 dead transitions. [2024-11-16 19:15:18,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 65 transitions, 267 flow [2024-11-16 19:15:18,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:15:18,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:15:18,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-11-16 19:15:18,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-16 19:15:18,432 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 4 states and 95 transitions. [2024-11-16 19:15:18,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 65 transitions, 267 flow [2024-11-16 19:15:18,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 65 transitions, 262 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-16 19:15:18,440 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 104 flow [2024-11-16 19:15:18,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-11-16 19:15:18,450 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2024-11-16 19:15:18,450 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 104 flow [2024-11-16 19:15:18,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-11-16 19:15:18,451 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:15:18,451 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:15:18,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:15:18,452 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:15:18,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:15:18,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1238049636, now seen corresponding path program 1 times [2024-11-16 19:15:18,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:15:18,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493720873] [2024-11-16 19:15:18,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:15:18,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:15:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:15:18,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:15:18,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:15:18,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493720873] [2024-11-16 19:15:18,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493720873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:15:18,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:15:18,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:15:18,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801256703] [2024-11-16 19:15:18,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:15:18,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:15:18,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:15:18,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:15:18,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:15:18,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-11-16 19:15:18,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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) [2024-11-16 19:15:18,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:15:18,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-11-16 19:15:18,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:15:19,019 INFO L124 PetriNetUnfolderBase]: 1935/3007 cut-off events. [2024-11-16 19:15:19,020 INFO L125 PetriNetUnfolderBase]: For 612/612 co-relation queries the response was YES. [2024-11-16 19:15:19,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6943 conditions, 3007 events. 1935/3007 cut-off events. For 612/612 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 14556 event pairs, 339 based on Foata normal form. 152/3156 useless extension candidates. Maximal degree in co-relation 6931. Up to 985 conditions per place. [2024-11-16 19:15:19,038 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 70 selfloop transitions, 8 changer transitions 1/83 dead transitions. [2024-11-16 19:15:19,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 83 transitions, 379 flow [2024-11-16 19:15:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:15:19,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:15:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-16 19:15:19,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6368421052631579 [2024-11-16 19:15:19,041 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 104 flow. Second operand 5 states and 121 transitions. [2024-11-16 19:15:19,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 83 transitions, 379 flow [2024-11-16 19:15:19,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 83 transitions, 369 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-16 19:15:19,047 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 144 flow [2024-11-16 19:15:19,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-11-16 19:15:19,048 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2024-11-16 19:15:19,048 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 144 flow [2024-11-16 19:15:19,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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) [2024-11-16 19:15:19,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:15:19,049 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] [2024-11-16 19:15:19,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:15:19,049 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:15:19,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:15:19,050 INFO L85 PathProgramCache]: Analyzing trace with hash 118286116, now seen corresponding path program 1 times [2024-11-16 19:15:19,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:15:19,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686934063] [2024-11-16 19:15:19,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:15:19,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:15:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:15:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:15:19,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:15:19,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686934063] [2024-11-16 19:15:19,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686934063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:15:19,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:15:19,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:15:19,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65419508] [2024-11-16 19:15:19,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:15:19,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:15:19,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:15:19,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:15:19,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:15:19,182 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-11-16 19:15:19,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-16 19:15:19,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:15:19,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-11-16 19:15:19,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:15:19,445 INFO L124 PetriNetUnfolderBase]: 1167/1807 cut-off events. [2024-11-16 19:15:19,446 INFO L125 PetriNetUnfolderBase]: For 1138/1138 co-relation queries the response was YES. [2024-11-16 19:15:19,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4551 conditions, 1807 events. 1167/1807 cut-off events. For 1138/1138 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7975 event pairs, 303 based on Foata normal form. 56/1860 useless extension candidates. Maximal degree in co-relation 4537. Up to 672 conditions per place. [2024-11-16 19:15:19,458 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 59 selfloop transitions, 11 changer transitions 1/75 dead transitions. [2024-11-16 19:15:19,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 75 transitions, 370 flow [2024-11-16 19:15:19,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:15:19,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:15:19,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-11-16 19:15:19,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5307017543859649 [2024-11-16 19:15:19,463 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 144 flow. Second operand 6 states and 121 transitions. [2024-11-16 19:15:19,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 75 transitions, 370 flow [2024-11-16 19:15:19,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 75 transitions, 345 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-16 19:15:19,475 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 158 flow [2024-11-16 19:15:19,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2024-11-16 19:15:19,477 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-11-16 19:15:19,477 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 158 flow [2024-11-16 19:15:19,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-16 19:15:19,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:15:19,477 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] [2024-11-16 19:15:19,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:15:19,478 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:15:19,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:15:19,480 INFO L85 PathProgramCache]: Analyzing trace with hash 761494998, now seen corresponding path program 1 times [2024-11-16 19:15:19,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:15:19,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778884070] [2024-11-16 19:15:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:15:19,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:15:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:15:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:15:19,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:15:19,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778884070] [2024-11-16 19:15:19,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778884070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:15:19,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:15:19,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 19:15:19,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678030321] [2024-11-16 19:15:19,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:15:19,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:15:19,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:15:19,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:15:19,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:15:19,660 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-11-16 19:15:19,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2024-11-16 19:15:19,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:15:19,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-11-16 19:15:19,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:15:20,056 INFO L124 PetriNetUnfolderBase]: 1641/2537 cut-off events. [2024-11-16 19:15:20,058 INFO L125 PetriNetUnfolderBase]: For 1892/1892 co-relation queries the response was YES. [2024-11-16 19:15:20,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6566 conditions, 2537 events. 1641/2537 cut-off events. For 1892/1892 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11904 event pairs, 120 based on Foata normal form. 8/2544 useless extension candidates. Maximal degree in co-relation 6551. Up to 1325 conditions per place. [2024-11-16 19:15:20,070 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 50 selfloop transitions, 4 changer transitions 44/102 dead transitions. [2024-11-16 19:15:20,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 102 transitions, 594 flow [2024-11-16 19:15:20,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:15:20,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:15:20,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-11-16 19:15:20,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4901315789473684 [2024-11-16 19:15:20,074 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 158 flow. Second operand 8 states and 149 transitions. [2024-11-16 19:15:20,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 102 transitions, 594 flow [2024-11-16 19:15:20,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 102 transitions, 465 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-11-16 19:15:20,089 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 134 flow [2024-11-16 19:15:20,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=134, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-11-16 19:15:20,090 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-11-16 19:15:20,091 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 134 flow [2024-11-16 19:15:20,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2024-11-16 19:15:20,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:15:20,092 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] [2024-11-16 19:15:20,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:15:20,092 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:15:20,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:15:20,094 INFO L85 PathProgramCache]: Analyzing trace with hash 31141058, now seen corresponding path program 2 times [2024-11-16 19:15:20,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:15:20,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009616499] [2024-11-16 19:15:20,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:15:20,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:15:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:15:20,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:15:20,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:15:20,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009616499] [2024-11-16 19:15:20,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009616499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:15:20,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:15:20,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:15:20,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378849520] [2024-11-16 19:15:20,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:15:20,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:15:20,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:15:20,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:15:20,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:15:20,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-11-16 19:15:20,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 134 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2024-11-16 19:15:20,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:15:20,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-11-16 19:15:20,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:15:20,595 INFO L124 PetriNetUnfolderBase]: 1424/2265 cut-off events. [2024-11-16 19:15:20,595 INFO L125 PetriNetUnfolderBase]: For 917/920 co-relation queries the response was YES. [2024-11-16 19:15:20,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5427 conditions, 2265 events. 1424/2265 cut-off events. For 917/920 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10645 event pairs, 436 based on Foata normal form. 8/2270 useless extension candidates. Maximal degree in co-relation 5410. Up to 884 conditions per place. [2024-11-16 19:15:20,605 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 36 selfloop transitions, 3 changer transitions 40/83 dead transitions. [2024-11-16 19:15:20,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 423 flow [2024-11-16 19:15:20,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:15:20,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:15:20,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-11-16 19:15:20,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-11-16 19:15:20,608 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 134 flow. Second operand 6 states and 112 transitions. [2024-11-16 19:15:20,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 423 flow [2024-11-16 19:15:20,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 83 transitions, 407 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-16 19:15:20,613 INFO L231 Difference]: Finished difference. Result has 56 places, 38 transitions, 129 flow [2024-11-16 19:15:20,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=56, PETRI_TRANSITIONS=38} [2024-11-16 19:15:20,614 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-11-16 19:15:20,614 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 38 transitions, 129 flow [2024-11-16 19:15:20,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2024-11-16 19:15:20,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:15:20,615 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] [2024-11-16 19:15:20,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:15:20,615 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:15:20,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:15:20,616 INFO L85 PathProgramCache]: Analyzing trace with hash 674792238, now seen corresponding path program 3 times [2024-11-16 19:15:20,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:15:20,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699440650] [2024-11-16 19:15:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:15:20,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:15:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:15:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:15:20,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:15:20,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699440650] [2024-11-16 19:15:20,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699440650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:15:20,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:15:20,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:15:20,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80646022] [2024-11-16 19:15:20,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:15:20,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:15:20,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:15:20,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:15:20,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:15:20,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-11-16 19:15:20,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 38 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-11-16 19:15:20,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:15:20,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-11-16 19:15:20,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:15:20,967 INFO L124 PetriNetUnfolderBase]: 590/940 cut-off events. [2024-11-16 19:15:20,967 INFO L125 PetriNetUnfolderBase]: For 392/392 co-relation queries the response was YES. [2024-11-16 19:15:20,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2299 conditions, 940 events. 590/940 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3767 event pairs, 162 based on Foata normal form. 8/948 useless extension candidates. Maximal degree in co-relation 2290. Up to 640 conditions per place. [2024-11-16 19:15:20,970 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2024-11-16 19:15:20,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 273 flow [2024-11-16 19:15:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:15:20,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:15:20,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-11-16 19:15:20,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3991228070175439 [2024-11-16 19:15:20,973 INFO L175 Difference]: Start difference. First operand has 56 places, 38 transitions, 129 flow. Second operand 6 states and 91 transitions. [2024-11-16 19:15:20,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 273 flow [2024-11-16 19:15:20,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 251 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-16 19:15:20,975 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2024-11-16 19:15:20,975 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2024-11-16 19:15:20,976 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-11-16 19:15:20,978 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2024-11-16 19:15:20,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-11-16 19:15:20,980 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-16 19:15:20,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-16 19:15:20,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-16 19:15:20,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-16 19:15:20,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:15:20,982 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-11-16 19:15:20,986 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-16 19:15:20,986 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 19:15:20,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:15:20 BasicIcfg [2024-11-16 19:15:20,995 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 19:15:20,996 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 19:15:20,996 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 19:15:20,996 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 19:15:20,996 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:15:16" (3/4) ... [2024-11-16 19:15:20,999 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-16 19:15:21,002 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2024-11-16 19:15:21,002 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2024-11-16 19:15:21,002 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2024-11-16 19:15:21,007 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2024-11-16 19:15:21,008 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-16 19:15:21,008 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-16 19:15:21,009 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-16 19:15:21,091 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 19:15:21,092 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-16 19:15:21,093 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 19:15:21,093 INFO L158 Benchmark]: Toolchain (without parser) took 5429.94ms. Allocated memory was 136.3MB in the beginning and 302.0MB in the end (delta: 165.7MB). Free memory was 62.2MB in the beginning and 138.0MB in the end (delta: -75.8MB). Peak memory consumption was 91.3MB. Max. memory is 16.1GB. [2024-11-16 19:15:21,093 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 136.3MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 19:15:21,094 INFO L158 Benchmark]: CACSL2BoogieTranslator took 561.49ms. Allocated memory was 136.3MB in the beginning and 174.1MB in the end (delta: 37.7MB). Free memory was 61.9MB in the beginning and 131.7MB in the end (delta: -69.8MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2024-11-16 19:15:21,096 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.28ms. Allocated memory is still 174.1MB. Free memory was 131.7MB in the beginning and 129.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 19:15:21,097 INFO L158 Benchmark]: Boogie Preprocessor took 61.99ms. Allocated memory is still 174.1MB. Free memory was 129.6MB in the beginning and 127.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 19:15:21,097 INFO L158 Benchmark]: IcfgBuilder took 469.97ms. Allocated memory is still 174.1MB. Free memory was 127.5MB in the beginning and 107.6MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-16 19:15:21,097 INFO L158 Benchmark]: TraceAbstraction took 4187.65ms. Allocated memory was 174.1MB in the beginning and 302.0MB in the end (delta: 127.9MB). Free memory was 106.6MB in the beginning and 142.2MB in the end (delta: -35.7MB). Peak memory consumption was 92.3MB. Max. memory is 16.1GB. [2024-11-16 19:15:21,097 INFO L158 Benchmark]: Witness Printer took 96.98ms. Allocated memory is still 302.0MB. Free memory was 142.2MB in the beginning and 138.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-16 19:15:21,099 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 136.3MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 561.49ms. Allocated memory was 136.3MB in the beginning and 174.1MB in the end (delta: 37.7MB). Free memory was 61.9MB in the beginning and 131.7MB in the end (delta: -69.8MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.28ms. Allocated memory is still 174.1MB. Free memory was 131.7MB in the beginning and 129.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.99ms. Allocated memory is still 174.1MB. Free memory was 129.6MB in the beginning and 127.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 469.97ms. Allocated memory is still 174.1MB. Free memory was 127.5MB in the beginning and 107.6MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4187.65ms. Allocated memory was 174.1MB in the beginning and 302.0MB in the end (delta: 127.9MB). Free memory was 106.6MB in the beginning and 142.2MB in the end (delta: -35.7MB). Peak memory consumption was 92.3MB. Max. memory is 16.1GB. * Witness Printer took 96.98ms. Allocated memory is still 302.0MB. Free memory was 142.2MB in the beginning and 138.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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 7 procedures, 62 locations, 4 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: 4.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 388 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 382 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 845 IncrementalHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 0 mSDtfsCounter, 845 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=3, InterpolantAutomatonStates: 35, 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, 1.2s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 654 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-16 19:15:21,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE