./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/rfi003_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/rfi003_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 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:16:46,248 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:16:46,299 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:16:46,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:16:46,302 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:16:46,317 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:16:46,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:16:46,318 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:16:46,319 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:16:46,320 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:16:46,320 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:16:46,320 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:16:46,321 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:16:46,322 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:16:46,323 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:16:46,323 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:16:46,323 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:16:46,323 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:16:46,324 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:16:46,324 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:16:46,324 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:16:46,325 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:16:46,325 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:16:46,326 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:16:46,326 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:16:46,326 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:16:46,326 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:16:46,327 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:16:46,327 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:16:46,327 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:16:46,327 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:16:46,327 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:16:46,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:16:46,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:16:46,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:16:46,328 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:16:46,329 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:16:46,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:16:46,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:16:46,329 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:16:46,329 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:16:46,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:16:46,330 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 [2024-11-10 10:16:46,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:16:46,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:16:46,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:16:46,540 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:16:46,541 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:16:46,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2024-11-10 10:16:47,848 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:16:48,045 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:16:48,046 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi003_tso.i [2024-11-10 10:16:48,061 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd50de49c/d89cdb4505e54bc093a5d129a7e3aa1f/FLAGa74469dd2 [2024-11-10 10:16:48,072 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd50de49c/d89cdb4505e54bc093a5d129a7e3aa1f [2024-11-10 10:16:48,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:16:48,075 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:16:48,076 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:16:48,076 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:16:48,080 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:16:48,080 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:16:48" (1/1) ... [2024-11-10 10:16:48,081 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69c456b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:16:48, skipping insertion in model container [2024-11-10 10:16:48,081 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:16:48" (1/1) ... [2024-11-10 10:16:48,117 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:16:48,271 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/rfi003_tso.i[944,957] [2024-11-10 10:16:48,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:16:48,497 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:16:48,506 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/rfi003_tso.i[944,957] [2024-11-10 10:16:48,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:16:48,593 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:16:48,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:16:48 WrapperNode [2024-11-10 10:16:48,594 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:16:48,595 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:16:48,595 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:16:48,595 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:16:48,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:16:48" (1/1) ... [2024-11-10 10:16:48,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:16:48" (1/1) ... [2024-11-10 10:16:48,656 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 168 [2024-11-10 10:16:48,656 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:16:48,659 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:16:48,659 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:16:48,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:16:48,668 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:16:48" (1/1) ... [2024-11-10 10:16:48,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:16:48" (1/1) ... [2024-11-10 10:16:48,672 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:16:48" (1/1) ... [2024-11-10 10:16:48,700 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]. [2024-11-10 10:16:48,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:16:48" (1/1) ... [2024-11-10 10:16:48,701 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:16:48" (1/1) ... [2024-11-10 10:16:48,710 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:16:48" (1/1) ... [2024-11-10 10:16:48,710 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:16:48" (1/1) ... [2024-11-10 10:16:48,716 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:16:48" (1/1) ... [2024-11-10 10:16:48,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:16:48" (1/1) ... [2024-11-10 10:16:48,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:16:48,725 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:16:48,726 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:16:48,726 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:16:48,727 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:16:48" (1/1) ... [2024-11-10 10:16:48,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:16:48,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:16:48,760 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) [2024-11-10 10:16:48,762 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 [2024-11-10 10:16:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 10:16:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:16:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-10 10:16:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-10 10:16:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-10 10:16:48,808 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-10 10:16:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:16:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 10:16:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:16:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:16:48,810 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:16:48,909 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:16:48,911 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:16:49,189 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:16:49,189 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:16:49,401 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:16:49,402 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:16:49,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:16:49 BoogieIcfgContainer [2024-11-10 10:16:49,402 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:16:49,404 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:16:49,404 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:16:49,406 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:16:49,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:16:48" (1/3) ... [2024-11-10 10:16:49,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@613819fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:16:49, skipping insertion in model container [2024-11-10 10:16:49,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:16:48" (2/3) ... [2024-11-10 10:16:49,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@613819fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:16:49, skipping insertion in model container [2024-11-10 10:16:49,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:16:49" (3/3) ... [2024-11-10 10:16:49,409 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2024-11-10 10:16:49,422 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:16:49,422 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 10:16:49,423 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:16:49,460 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:16:49,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 74 flow [2024-11-10 10:16:49,511 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2024-11-10 10:16:49,511 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:16:49,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 1/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-10 10:16:49,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 74 flow [2024-11-10 10:16:49,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 31 transitions, 68 flow [2024-11-10 10:16:49,527 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:16:49,533 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;@3dca751e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:16:49,533 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 10:16:49,538 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:16:49,539 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2024-11-10 10:16:49,539 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:16:49,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:16:49,539 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:16:49,540 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:16:49,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:16:49,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1045431674, now seen corresponding path program 1 times [2024-11-10 10:16:49,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:16:49,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521695399] [2024-11-10 10:16:49,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:16:49,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:16:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:16:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:16:49,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:16:49,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521695399] [2024-11-10 10:16:49,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521695399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:16:49,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:16:49,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 10:16:49,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304769910] [2024-11-10 10:16:49,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:16:49,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:16:49,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:16:49,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:16:49,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:16:49,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-10 10:16:49,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-11-10 10:16:49,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:16:49,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-10 10:16:49,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:16:50,374 INFO L124 PetriNetUnfolderBase]: 830/1380 cut-off events. [2024-11-10 10:16:50,374 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-10 10:16:50,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2749 conditions, 1380 events. 830/1380 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6701 event pairs, 170 based on Foata normal form. 56/1433 useless extension candidates. Maximal degree in co-relation 2739. Up to 1039 conditions per place. [2024-11-10 10:16:50,385 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 35 selfloop transitions, 2 changer transitions 2/43 dead transitions. [2024-11-10 10:16:50,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 170 flow [2024-11-10 10:16:50,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:16:50,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:16:50,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-11-10 10:16:50,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-11-10 10:16:50,395 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 68 flow. Second operand 3 states and 60 transitions. [2024-11-10 10:16:50,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 170 flow [2024-11-10 10:16:50,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 43 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:16:50,400 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 64 flow [2024-11-10 10:16:50,401 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-11-10 10:16:50,404 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-11-10 10:16:50,405 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 64 flow [2024-11-10 10:16:50,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-11-10 10:16:50,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:16:50,405 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:16:50,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:16:50,406 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:16:50,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:16:50,407 INFO L85 PathProgramCache]: Analyzing trace with hash -357871917, now seen corresponding path program 1 times [2024-11-10 10:16:50,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:16:50,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874596249] [2024-11-10 10:16:50,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:16:50,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:16:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:16:50,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:16:50,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:16:50,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874596249] [2024-11-10 10:16:50,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874596249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:16:50,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:16:50,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:16:50,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544683476] [2024-11-10 10:16:50,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:16:50,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:16:50,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:16:50,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:16:50,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:16:50,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-10 10:16:50,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-10 10:16:50,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:16:50,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-10 10:16:50,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:16:50,804 INFO L124 PetriNetUnfolderBase]: 444/838 cut-off events. [2024-11-10 10:16:50,804 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-10 10:16:50,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1674 conditions, 838 events. 444/838 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3787 event pairs, 132 based on Foata normal form. 56/891 useless extension candidates. Maximal degree in co-relation 1664. Up to 379 conditions per place. [2024-11-10 10:16:50,809 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 47 selfloop transitions, 4 changer transitions 1/56 dead transitions. [2024-11-10 10:16:50,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 56 transitions, 230 flow [2024-11-10 10:16:50,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:16:50,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:16:50,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-10 10:16:50,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-11-10 10:16:50,811 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 64 flow. Second operand 4 states and 78 transitions. [2024-11-10 10:16:50,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 56 transitions, 230 flow [2024-11-10 10:16:50,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 56 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:16:50,812 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 86 flow [2024-11-10 10:16:50,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-11-10 10:16:50,813 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2024-11-10 10:16:50,813 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 86 flow [2024-11-10 10:16:50,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-10 10:16:50,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:16:50,815 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:16:50,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:16:50,815 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:16:50,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:16:50,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2145251954, now seen corresponding path program 1 times [2024-11-10 10:16:50,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:16:50,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105762593] [2024-11-10 10:16:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:16:50,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:16:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:16:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:16:51,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:16:51,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105762593] [2024-11-10 10:16:51,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105762593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:16:51,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:16:51,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:16:51,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680384440] [2024-11-10 10:16:51,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:16:51,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:16:51,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:16:51,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:16:51,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:16:51,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-10 10:16:51,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-10 10:16:51,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:16:51,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-10 10:16:51,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:16:51,240 INFO L124 PetriNetUnfolderBase]: 208/396 cut-off events. [2024-11-10 10:16:51,240 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-11-10 10:16:51,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 396 events. 208/396 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1359 event pairs, 88 based on Foata normal form. 26/419 useless extension candidates. Maximal degree in co-relation 911. Up to 161 conditions per place. [2024-11-10 10:16:51,242 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 37 selfloop transitions, 6 changer transitions 1/48 dead transitions. [2024-11-10 10:16:51,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 48 transitions, 215 flow [2024-11-10 10:16:51,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:16:51,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:16:51,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-11-10 10:16:51,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46060606060606063 [2024-11-10 10:16:51,243 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 86 flow. Second operand 5 states and 76 transitions. [2024-11-10 10:16:51,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 48 transitions, 215 flow [2024-11-10 10:16:51,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 206 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 10:16:51,245 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 102 flow [2024-11-10 10:16:51,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=102, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2024-11-10 10:16:51,245 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2024-11-10 10:16:51,245 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 102 flow [2024-11-10 10:16:51,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-11-10 10:16:51,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:16:51,246 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] [2024-11-10 10:16:51,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:16:51,246 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:16:51,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:16:51,248 INFO L85 PathProgramCache]: Analyzing trace with hash 89623924, now seen corresponding path program 1 times [2024-11-10 10:16:51,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:16:51,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339765393] [2024-11-10 10:16:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:16:51,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:16:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:16:51,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:16:51,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:16:51,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339765393] [2024-11-10 10:16:51,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339765393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:16:51,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:16:51,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:16:51,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481801034] [2024-11-10 10:16:51,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:16:51,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:16:51,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:16:51,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:16:51,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:16:51,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-10 10:16:51,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 102 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-10 10:16:51,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:16:51,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-10 10:16:51,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:16:51,998 INFO L124 PetriNetUnfolderBase]: 257/499 cut-off events. [2024-11-10 10:16:51,999 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2024-11-10 10:16:52,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 499 events. 257/499 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1870 event pairs, 36 based on Foata normal form. 4/500 useless extension candidates. Maximal degree in co-relation 1195. Up to 265 conditions per place. [2024-11-10 10:16:52,001 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 29 selfloop transitions, 1 changer transitions 24/58 dead transitions. [2024-11-10 10:16:52,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 58 transitions, 306 flow [2024-11-10 10:16:52,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:16:52,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:16:52,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-11-10 10:16:52,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-11-10 10:16:52,002 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 102 flow. Second operand 6 states and 87 transitions. [2024-11-10 10:16:52,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 58 transitions, 306 flow [2024-11-10 10:16:52,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 249 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-10 10:16:52,005 INFO L231 Difference]: Finished difference. Result has 45 places, 30 transitions, 85 flow [2024-11-10 10:16:52,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=85, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2024-11-10 10:16:52,006 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2024-11-10 10:16:52,006 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 85 flow [2024-11-10 10:16:52,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-10 10:16:52,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:16:52,006 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] [2024-11-10 10:16:52,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:16:52,007 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:16:52,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:16:52,007 INFO L85 PathProgramCache]: Analyzing trace with hash -2133642590, now seen corresponding path program 2 times [2024-11-10 10:16:52,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:16:52,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278341701] [2024-11-10 10:16:52,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:16:52,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:16:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:16:55,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:16:55,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:16:55,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278341701] [2024-11-10 10:16:55,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278341701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:16:55,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:16:55,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-10 10:16:55,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055354730] [2024-11-10 10:16:55,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:16:55,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 10:16:55,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:16:55,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 10:16:55,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:16:55,408 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-10 10:16:55,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 85 flow. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 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) [2024-11-10 10:16:55,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:16:55,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-10 10:16:55,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:16:55,844 INFO L124 PetriNetUnfolderBase]: 234/477 cut-off events. [2024-11-10 10:16:55,845 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-10 10:16:55,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 477 events. 234/477 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1837 event pairs, 45 based on Foata normal form. 4/479 useless extension candidates. Maximal degree in co-relation 1042. Up to 162 conditions per place. [2024-11-10 10:16:55,846 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 28 selfloop transitions, 5 changer transitions 38/75 dead transitions. [2024-11-10 10:16:55,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 75 transitions, 341 flow [2024-11-10 10:16:55,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:16:55,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:16:55,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-11-10 10:16:55,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-11-10 10:16:55,848 INFO L175 Difference]: Start difference. First operand has 45 places, 30 transitions, 85 flow. Second operand 10 states and 128 transitions. [2024-11-10 10:16:55,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 75 transitions, 341 flow [2024-11-10 10:16:55,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 75 transitions, 329 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-10 10:16:55,849 INFO L231 Difference]: Finished difference. Result has 52 places, 30 transitions, 104 flow [2024-11-10 10:16:55,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=104, PETRI_PLACES=52, PETRI_TRANSITIONS=30} [2024-11-10 10:16:55,850 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2024-11-10 10:16:55,850 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 30 transitions, 104 flow [2024-11-10 10:16:55,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 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) [2024-11-10 10:16:55,850 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:16:55,850 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] [2024-11-10 10:16:55,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:16:55,851 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:16:55,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:16:55,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1312230510, now seen corresponding path program 3 times [2024-11-10 10:16:55,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:16:55,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659455201] [2024-11-10 10:16:55,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:16:55,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:16:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:16:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:16:58,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:16:58,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659455201] [2024-11-10 10:16:58,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659455201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:16:58,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:16:58,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-10 10:16:58,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245068702] [2024-11-10 10:16:58,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:16:58,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:16:58,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:16:58,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:16:58,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:16:58,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-10 10:16:58,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 30 transitions, 104 flow. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 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) [2024-11-10 10:16:58,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:16:58,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-10 10:16:58,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:16:59,198 INFO L124 PetriNetUnfolderBase]: 86/191 cut-off events. [2024-11-10 10:16:59,198 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-10 10:16:59,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 191 events. 86/191 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 504 event pairs, 7 based on Foata normal form. 4/193 useless extension candidates. Maximal degree in co-relation 482. Up to 69 conditions per place. [2024-11-10 10:16:59,199 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2024-11-10 10:16:59,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 46 transitions, 233 flow [2024-11-10 10:16:59,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:16:59,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:16:59,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-11-10 10:16:59,200 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3090909090909091 [2024-11-10 10:16:59,200 INFO L175 Difference]: Start difference. First operand has 52 places, 30 transitions, 104 flow. Second operand 10 states and 102 transitions. [2024-11-10 10:16:59,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 46 transitions, 233 flow [2024-11-10 10:16:59,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 222 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-10 10:16:59,201 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2024-11-10 10:16:59,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, 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=10, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2024-11-10 10:16:59,202 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 13 predicate places. [2024-11-10 10:16:59,202 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2024-11-10 10:16:59,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 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) [2024-11-10 10:16:59,205 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-11-10 10:16:59,206 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-10 10:16:59,206 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-11-10 10:16:59,206 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-11-10 10:16:59,206 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-10 10:16:59,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:16:59,207 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-11-10 10:16:59,212 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 10:16:59,212 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 10:16:59,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:16:59 BasicIcfg [2024-11-10 10:16:59,215 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 10:16:59,216 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 10:16:59,216 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 10:16:59,216 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 10:16:59,217 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:16:49" (3/4) ... [2024-11-10 10:16:59,218 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 10:16:59,220 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2024-11-10 10:16:59,220 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2024-11-10 10:16:59,222 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 40 nodes and edges [2024-11-10 10:16:59,223 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-10 10:16:59,223 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-10 10:16:59,223 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-10 10:16:59,295 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 10:16:59,297 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 10:16:59,297 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 10:16:59,298 INFO L158 Benchmark]: Toolchain (without parser) took 11223.03ms. Allocated memory was 167.8MB in the beginning and 679.5MB in the end (delta: 511.7MB). Free memory was 94.7MB in the beginning and 383.3MB in the end (delta: -288.6MB). Peak memory consumption was 225.2MB. Max. memory is 16.1GB. [2024-11-10 10:16:59,298 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 167.8MB. Free memory is still 120.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 10:16:59,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.38ms. Allocated memory is still 167.8MB. Free memory was 94.5MB in the beginning and 124.4MB in the end (delta: -29.9MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2024-11-10 10:16:59,298 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.06ms. Allocated memory is still 167.8MB. Free memory was 124.4MB in the beginning and 120.9MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 10:16:59,298 INFO L158 Benchmark]: Boogie Preprocessor took 64.88ms. Allocated memory is still 167.8MB. Free memory was 120.9MB in the beginning and 116.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 10:16:59,299 INFO L158 Benchmark]: IcfgBuilder took 677.55ms. Allocated memory is still 167.8MB. Free memory was 116.7MB in the beginning and 122.2MB in the end (delta: -5.5MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. [2024-11-10 10:16:59,299 INFO L158 Benchmark]: TraceAbstraction took 9811.78ms. Allocated memory was 167.8MB in the beginning and 679.5MB in the end (delta: 511.7MB). Free memory was 121.3MB in the beginning and 387.5MB in the end (delta: -266.2MB). Peak memory consumption was 246.2MB. Max. memory is 16.1GB. [2024-11-10 10:16:59,299 INFO L158 Benchmark]: Witness Printer took 81.33ms. Allocated memory is still 679.5MB. Free memory was 387.5MB in the beginning and 383.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 10:16:59,300 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 167.8MB. Free memory is still 120.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 518.38ms. Allocated memory is still 167.8MB. Free memory was 94.5MB in the beginning and 124.4MB in the end (delta: -29.9MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.06ms. Allocated memory is still 167.8MB. Free memory was 124.4MB in the beginning and 120.9MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.88ms. Allocated memory is still 167.8MB. Free memory was 120.9MB in the beginning and 116.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 677.55ms. Allocated memory is still 167.8MB. Free memory was 116.7MB in the beginning and 122.2MB in the end (delta: -5.5MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9811.78ms. Allocated memory was 167.8MB in the beginning and 679.5MB in the end (delta: 511.7MB). Free memory was 121.3MB in the beginning and 387.5MB in the end (delta: -266.2MB). Peak memory consumption was 246.2MB. Max. memory is 16.1GB. * Witness Printer took 81.33ms. Allocated memory is still 679.5MB. Free memory was 387.5MB in the beginning and 383.3MB 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 - 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 5 procedures, 53 locations, 5 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: 9.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 267 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 261 mSDsluCounter, 89 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 89 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 930 IncrementalHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 0 mSDtfsCounter, 930 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=5, InterpolantAutomatonStates: 38, 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, 0.6s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 1118 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 10:16:59,322 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