./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix013.opt.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/mix013.opt.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 7d5aa429e9fa5fafdbda3a249edb2f84a5af4e6e0b36ce720714921f621bb137 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:09:43,955 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:09:44,029 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:09:44,036 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:09:44,038 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:09:44,062 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:09:44,063 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:09:44,063 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:09:44,064 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:09:44,065 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:09:44,065 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:09:44,065 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:09:44,066 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:09:44,066 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:09:44,066 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:09:44,066 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:09:44,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:09:44,067 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:09:44,067 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:09:44,069 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:09:44,069 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:09:44,070 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:09:44,071 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:09:44,071 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:09:44,072 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:09:44,072 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:09:44,072 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:09:44,072 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:09:44,072 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:09:44,072 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:09:44,072 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:09:44,073 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:09:44,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:09:44,073 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:09:44,073 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:09:44,073 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:09:44,073 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:09:44,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:09:44,074 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:09:44,074 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:09:44,074 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:09:44,076 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:09:44,076 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d5aa429e9fa5fafdbda3a249edb2f84a5af4e6e0b36ce720714921f621bb137 [2024-11-16 19:09:44,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:09:44,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:09:44,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:09:44,334 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:09:44,334 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:09:44,335 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix013.opt.i [2024-11-16 19:09:45,733 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:09:45,988 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:09:45,989 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix013.opt.i [2024-11-16 19:09:46,007 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef04e3d0b/b67fe2023e704396a2bcd1ebd86ec54c/FLAG9568aa090 [2024-11-16 19:09:46,019 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef04e3d0b/b67fe2023e704396a2bcd1ebd86ec54c [2024-11-16 19:09:46,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:09:46,022 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:09:46,024 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:09:46,024 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:09:46,028 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:09:46,029 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:09:46" (1/1) ... [2024-11-16 19:09:46,029 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38525184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:46, skipping insertion in model container [2024-11-16 19:09:46,030 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:09:46" (1/1) ... [2024-11-16 19:09:46,069 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:09:46,321 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/mix013.opt.i[944,957] [2024-11-16 19:09:46,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:09:46,486 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:09:46,495 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/mix013.opt.i[944,957] [2024-11-16 19:09:46,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:09:46,587 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:09:46,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:46 WrapperNode [2024-11-16 19:09:46,588 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:09:46,589 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:09:46,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:09:46,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:09:46,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:46" (1/1) ... [2024-11-16 19:09:46,613 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:46" (1/1) ... [2024-11-16 19:09:46,644 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 152 [2024-11-16 19:09:46,648 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:09:46,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:09:46,649 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:09:46,649 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:09:46,659 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:46" (1/1) ... [2024-11-16 19:09:46,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:46" (1/1) ... [2024-11-16 19:09:46,664 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:46" (1/1) ... [2024-11-16 19:09:46,680 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 19:09:46,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:46" (1/1) ... [2024-11-16 19:09:46,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:46" (1/1) ... [2024-11-16 19:09:46,689 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:46" (1/1) ... [2024-11-16 19:09:46,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:46" (1/1) ... [2024-11-16 19:09:46,695 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:46" (1/1) ... [2024-11-16 19:09:46,696 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:46" (1/1) ... [2024-11-16 19:09:46,703 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:09:46,706 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:09:46,706 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:09:46,706 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:09:46,707 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:46" (1/1) ... [2024-11-16 19:09:46,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:09:46,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:09:46,747 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 19:09:46,749 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 19:09:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:09:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:09:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-16 19:09:46,783 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-16 19:09:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-16 19:09:46,783 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-16 19:09:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-16 19:09:46,783 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-16 19:09:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-16 19:09:46,783 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-16 19:09:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:09:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:09:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:09:46,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:09:46,785 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 19:09:46,899 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:09:46,901 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:09:47,173 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:09:47,174 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:09:47,345 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:09:47,345 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:09:47,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:09:47 BoogieIcfgContainer [2024-11-16 19:09:47,345 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:09:47,347 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:09:47,347 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:09:47,350 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:09:47,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:09:46" (1/3) ... [2024-11-16 19:09:47,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c02f705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:09:47, skipping insertion in model container [2024-11-16 19:09:47,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:46" (2/3) ... [2024-11-16 19:09:47,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c02f705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:09:47, skipping insertion in model container [2024-11-16 19:09:47,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:09:47" (3/3) ... [2024-11-16 19:09:47,352 INFO L112 eAbstractionObserver]: Analyzing ICFG mix013.opt.i [2024-11-16 19:09:47,365 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:09:47,365 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 19:09:47,365 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:09:47,412 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 19:09:47,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-11-16 19:09:47,499 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-11-16 19:09:47,500 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:09:47,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 106 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-11-16 19:09:47,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-11-16 19:09:47,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-11-16 19:09:47,512 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:09:47,517 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6884e651, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:09:47,518 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-16 19:09:47,524 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:09:47,525 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2024-11-16 19:09:47,525 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:09:47,525 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:47,526 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:09:47,526 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:09:47,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:47,531 INFO L85 PathProgramCache]: Analyzing trace with hash 394774490, now seen corresponding path program 1 times [2024-11-16 19:09:47,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:47,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696165719] [2024-11-16 19:09:47,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:47,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:47,914 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 19:09:47,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:47,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696165719] [2024-11-16 19:09:47,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696165719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:47,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:47,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-16 19:09:47,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15349678] [2024-11-16 19:09:47,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:47,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:09:47,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:47,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:09:47,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:09:47,955 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:09:47,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 19:09:47,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:47,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:09:47,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:09:53,902 INFO L124 PetriNetUnfolderBase]: 53337/70357 cut-off events. [2024-11-16 19:09:53,902 INFO L125 PetriNetUnfolderBase]: For 278/278 co-relation queries the response was YES. [2024-11-16 19:09:54,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140779 conditions, 70357 events. 53337/70357 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 1972. Compared 406622 event pairs, 6897 based on Foata normal form. 1764/72055 useless extension candidates. Maximal degree in co-relation 140767. Up to 60049 conditions per place. [2024-11-16 19:09:54,262 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 58 selfloop transitions, 2 changer transitions 2/68 dead transitions. [2024-11-16 19:09:54,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 68 transitions, 272 flow [2024-11-16 19:09:54,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:09:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:09:54,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-16 19:09:54,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-16 19:09:54,276 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 95 transitions. [2024-11-16 19:09:54,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 68 transitions, 272 flow [2024-11-16 19:09:54,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 68 transitions, 268 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:09:54,294 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-11-16 19:09:54,296 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-11-16 19:09:54,303 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-11-16 19:09:54,303 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-11-16 19:09:54,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 19:09:54,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:54,304 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:09:54,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:09:54,304 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:09:54,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:54,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1340628562, now seen corresponding path program 1 times [2024-11-16 19:09:54,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:54,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18447266] [2024-11-16 19:09:54,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:54,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:54,538 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 19:09:54,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:54,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18447266] [2024-11-16 19:09:54,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18447266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:54,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:54,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:09:54,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891107989] [2024-11-16 19:09:54,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:54,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:09:54,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:54,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:09:54,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:09:54,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:09:54,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 19:09:54,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:54,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:09:54,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:10:00,881 INFO L124 PetriNetUnfolderBase]: 69225/92693 cut-off events. [2024-11-16 19:10:00,881 INFO L125 PetriNetUnfolderBase]: For 2992/2992 co-relation queries the response was YES. [2024-11-16 19:10:01,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187221 conditions, 92693 events. 69225/92693 cut-off events. For 2992/2992 co-relation queries the response was YES. Maximal size of possible extension queue 2664. Compared 573359 event pairs, 35971 based on Foata normal form. 0/90929 useless extension candidates. Maximal degree in co-relation 187211. Up to 61559 conditions per place. [2024-11-16 19:10:01,322 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 50 selfloop transitions, 5 changer transitions 88/148 dead transitions. [2024-11-16 19:10:01,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 148 transitions, 612 flow [2024-11-16 19:10:01,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:10:01,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:10:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-11-16 19:10:01,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5425 [2024-11-16 19:10:01,327 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 8 states and 217 transitions. [2024-11-16 19:10:01,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 148 transitions, 612 flow [2024-11-16 19:10:01,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 148 transitions, 596 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:10:01,338 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 149 flow [2024-11-16 19:10:01,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=149, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2024-11-16 19:10:01,338 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2024-11-16 19:10:01,339 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 149 flow [2024-11-16 19:10:01,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 19:10:01,339 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:10:01,339 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 19:10:01,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:10:01,340 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:10:01,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:10:01,342 INFO L85 PathProgramCache]: Analyzing trace with hash -550740216, now seen corresponding path program 1 times [2024-11-16 19:10:01,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:10:01,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173527388] [2024-11-16 19:10:01,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:10:01,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:10:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:10:01,530 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 19:10:01,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:10:01,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173527388] [2024-11-16 19:10:01,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173527388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:10:01,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:10:01,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:10:01,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713165516] [2024-11-16 19:10:01,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:10:01,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:10:01,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:10:01,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:10:01,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:10:01,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:10:01,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 19:10:01,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:10:01,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:10:01,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:10:06,943 INFO L124 PetriNetUnfolderBase]: 52321/70167 cut-off events. [2024-11-16 19:10:06,944 INFO L125 PetriNetUnfolderBase]: For 53537/53537 co-relation queries the response was YES. [2024-11-16 19:10:07,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178310 conditions, 70167 events. 52321/70167 cut-off events. For 53537/53537 co-relation queries the response was YES. Maximal size of possible extension queue 1958. Compared 426776 event pairs, 14323 based on Foata normal form. 1708/71842 useless extension candidates. Maximal degree in co-relation 178295. Up to 45075 conditions per place. [2024-11-16 19:10:07,412 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 62 selfloop transitions, 3 changer transitions 79/149 dead transitions. [2024-11-16 19:10:07,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 149 transitions, 759 flow [2024-11-16 19:10:07,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:10:07,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:10:07,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2024-11-16 19:10:07,415 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-11-16 19:10:07,416 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 149 flow. Second operand 7 states and 205 transitions. [2024-11-16 19:10:07,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 149 transitions, 759 flow [2024-11-16 19:10:08,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 149 transitions, 746 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-16 19:10:08,707 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 159 flow [2024-11-16 19:10:08,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2024-11-16 19:10:08,708 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2024-11-16 19:10:08,708 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 159 flow [2024-11-16 19:10:08,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 19:10:08,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:10:08,708 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 19:10:08,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:10:08,708 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:10:08,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:10:08,709 INFO L85 PathProgramCache]: Analyzing trace with hash -457344626, now seen corresponding path program 1 times [2024-11-16 19:10:08,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:10:08,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239587861] [2024-11-16 19:10:08,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:10:08,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:10:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:10:08,833 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 19:10:08,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:10:08,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239587861] [2024-11-16 19:10:08,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239587861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:10:08,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:10:08,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:10:08,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223384054] [2024-11-16 19:10:08,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:10:08,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:10:08,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:10:08,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:10:08,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:10:08,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:10:08,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 19:10:08,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:10:08,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:10:08,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:10:13,337 INFO L124 PetriNetUnfolderBase]: 45777/61351 cut-off events. [2024-11-16 19:10:13,337 INFO L125 PetriNetUnfolderBase]: For 60121/60121 co-relation queries the response was YES. [2024-11-16 19:10:13,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159868 conditions, 61351 events. 45777/61351 cut-off events. For 60121/60121 co-relation queries the response was YES. Maximal size of possible extension queue 1562. Compared 355590 event pairs, 10139 based on Foata normal form. 1260/62570 useless extension candidates. Maximal degree in co-relation 159849. Up to 38761 conditions per place. [2024-11-16 19:10:13,692 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 58 selfloop transitions, 3 changer transitions 71/137 dead transitions. [2024-11-16 19:10:13,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 137 transitions, 702 flow [2024-11-16 19:10:13,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:10:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:10:13,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-11-16 19:10:13,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5514285714285714 [2024-11-16 19:10:13,695 INFO L175 Difference]: Start difference. First operand has 66 places, 46 transitions, 159 flow. Second operand 7 states and 193 transitions. [2024-11-16 19:10:13,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 137 transitions, 702 flow [2024-11-16 19:10:14,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 137 transitions, 678 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-16 19:10:14,607 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 164 flow [2024-11-16 19:10:14,607 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2024-11-16 19:10:14,607 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 9 predicate places. [2024-11-16 19:10:14,608 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 164 flow [2024-11-16 19:10:14,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 19:10:14,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:10:14,608 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] [2024-11-16 19:10:14,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:10:14,609 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:10:14,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:10:14,610 INFO L85 PathProgramCache]: Analyzing trace with hash -2144692915, now seen corresponding path program 1 times [2024-11-16 19:10:14,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:10:14,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039964042] [2024-11-16 19:10:14,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:10:14,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:10:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:10:14,838 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 19:10:14,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:10:14,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039964042] [2024-11-16 19:10:14,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039964042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:10:14,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:10:14,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:10:14,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151425189] [2024-11-16 19:10:14,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:10:14,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:10:14,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:10:14,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:10:14,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:10:14,841 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:10:14,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 19:10:14,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:10:14,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:10:14,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:10:18,910 INFO L124 PetriNetUnfolderBase]: 36373/49411 cut-off events. [2024-11-16 19:10:18,910 INFO L125 PetriNetUnfolderBase]: For 45793/45793 co-relation queries the response was YES. [2024-11-16 19:10:19,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128369 conditions, 49411 events. 36373/49411 cut-off events. For 45793/45793 co-relation queries the response was YES. Maximal size of possible extension queue 1330. Compared 293051 event pairs, 4877 based on Foata normal form. 1764/51142 useless extension candidates. Maximal degree in co-relation 128349. Up to 26545 conditions per place. [2024-11-16 19:10:19,244 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 82 selfloop transitions, 6 changer transitions 1/94 dead transitions. [2024-11-16 19:10:19,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 94 transitions, 500 flow [2024-11-16 19:10:19,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:10:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:10:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-11-16 19:10:19,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.635 [2024-11-16 19:10:19,246 INFO L175 Difference]: Start difference. First operand has 67 places, 46 transitions, 164 flow. Second operand 4 states and 127 transitions. [2024-11-16 19:10:19,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 94 transitions, 500 flow [2024-11-16 19:10:19,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 482 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-16 19:10:19,532 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 192 flow [2024-11-16 19:10:19,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2024-11-16 19:10:19,533 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2024-11-16 19:10:19,533 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 192 flow [2024-11-16 19:10:19,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 19:10:19,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:10:19,533 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] [2024-11-16 19:10:19,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:10:19,534 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:10:19,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:10:19,534 INFO L85 PathProgramCache]: Analyzing trace with hash -443624478, now seen corresponding path program 1 times [2024-11-16 19:10:19,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:10:19,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216474184] [2024-11-16 19:10:19,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:10:19,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:10:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:10:19,721 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 19:10:19,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:10:19,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216474184] [2024-11-16 19:10:19,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216474184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:10:19,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:10:19,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:10:19,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769439277] [2024-11-16 19:10:19,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:10:19,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:10:19,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:10:19,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:10:19,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:10:19,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:10:19,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 19:10:19,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:10:19,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:10:19,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:10:22,422 INFO L124 PetriNetUnfolderBase]: 24405/33539 cut-off events. [2024-11-16 19:10:22,423 INFO L125 PetriNetUnfolderBase]: For 30857/30857 co-relation queries the response was YES. [2024-11-16 19:10:22,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92987 conditions, 33539 events. 24405/33539 cut-off events. For 30857/30857 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 190919 event pairs, 2855 based on Foata normal form. 1364/34870 useless extension candidates. Maximal degree in co-relation 92969. Up to 12289 conditions per place. [2024-11-16 19:10:22,608 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 105 selfloop transitions, 10 changer transitions 1/121 dead transitions. [2024-11-16 19:10:22,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 121 transitions, 673 flow [2024-11-16 19:10:22,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:10:22,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:10:22,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-11-16 19:10:22,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.656 [2024-11-16 19:10:22,610 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 192 flow. Second operand 5 states and 164 transitions. [2024-11-16 19:10:22,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 121 transitions, 673 flow [2024-11-16 19:10:22,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 121 transitions, 662 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-16 19:10:22,618 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 244 flow [2024-11-16 19:10:22,619 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2024-11-16 19:10:22,620 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2024-11-16 19:10:22,620 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 244 flow [2024-11-16 19:10:22,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 19:10:22,620 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:10:22,620 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] [2024-11-16 19:10:22,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:10:22,621 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:10:22,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:10:22,621 INFO L85 PathProgramCache]: Analyzing trace with hash -431371033, now seen corresponding path program 1 times [2024-11-16 19:10:22,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:10:22,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827144548] [2024-11-16 19:10:22,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:10:22,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:10:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:10:22,893 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 19:10:22,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:10:22,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827144548] [2024-11-16 19:10:22,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827144548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:10:22,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:10:22,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:10:22,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374643427] [2024-11-16 19:10:22,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:10:22,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:10:22,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:10:22,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:10:22,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:10:22,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:10:22,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 19:10:22,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:10:22,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:10:22,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand