./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 02:26:25,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 02:26:25,616 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 02:26:25,620 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 02:26:25,620 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 02:26:25,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 02:26:25,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 02:26:25,644 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 02:26:25,645 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 02:26:25,645 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 02:26:25,646 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 02:26:25,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 02:26:25,646 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 02:26:25,646 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 02:26:25,646 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 02:26:25,647 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 02:26:25,647 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 02:26:25,647 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 02:26:25,647 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 02:26:25,647 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 02:26:25,647 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 02:26:25,647 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 02:26:25,648 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 02:26:25,648 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 02:26:25,648 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 02:26:25,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 02:26:25,648 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 02:26:25,648 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 02:26:25,648 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 02:26:25,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 02:26:25,648 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 02:26:25,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 02:26:25,648 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:26:25,649 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 02:26:25,649 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 02:26:25,649 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 02:26:25,649 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 02:26:25,650 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 02:26:25,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 02:26:25,650 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 02:26:25,650 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 02:26:25,650 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 02:26:25,650 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 02:26:25,650 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 [2025-03-04 02:26:25,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 02:26:25,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 02:26:25,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 02:26:25,899 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 02:26:25,899 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 02:26:25,901 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2025-03-04 02:26:27,124 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1b1d26d9/38a4b21e856647c09d549d292fa6e4eb/FLAGa19d8b91c [2025-03-04 02:26:27,353 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 02:26:27,354 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2025-03-04 02:26:27,361 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1b1d26d9/38a4b21e856647c09d549d292fa6e4eb/FLAGa19d8b91c [2025-03-04 02:26:27,380 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1b1d26d9/38a4b21e856647c09d549d292fa6e4eb [2025-03-04 02:26:27,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 02:26:27,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 02:26:27,402 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 02:26:27,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 02:26:27,407 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 02:26:27,408 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:26:27" (1/1) ... [2025-03-04 02:26:27,408 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2352926e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:26:27, skipping insertion in model container [2025-03-04 02:26:27,415 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:26:27" (1/1) ... [2025-03-04 02:26:27,433 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 02:26:27,599 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c[2664,2677] [2025-03-04 02:26:27,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:26:27,614 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 02:26:27,637 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c[2664,2677] [2025-03-04 02:26:27,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:26:27,650 INFO L204 MainTranslator]: Completed translation [2025-03-04 02:26:27,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:26:27 WrapperNode [2025-03-04 02:26:27,652 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 02:26:27,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 02:26:27,653 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 02:26:27,653 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 02:26:27,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:26:27" (1/1) ... [2025-03-04 02:26:27,665 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:26:27" (1/1) ... [2025-03-04 02:26:27,683 INFO L138 Inliner]: procedures = 22, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 92 [2025-03-04 02:26:27,683 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 02:26:27,684 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 02:26:27,684 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 02:26:27,684 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 02:26:27,692 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:26:27" (1/1) ... [2025-03-04 02:26:27,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:26:27" (1/1) ... [2025-03-04 02:26:27,693 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:26:27" (1/1) ... [2025-03-04 02:26:27,703 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]. [2025-03-04 02:26:27,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:26:27" (1/1) ... [2025-03-04 02:26:27,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:26:27" (1/1) ... [2025-03-04 02:26:27,712 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:26:27" (1/1) ... [2025-03-04 02:26:27,713 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:26:27" (1/1) ... [2025-03-04 02:26:27,719 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:26:27" (1/1) ... [2025-03-04 02:26:27,720 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:26:27" (1/1) ... [2025-03-04 02:26:27,721 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 02:26:27,721 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 02:26:27,721 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 02:26:27,721 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 02:26:27,722 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:26:27" (1/1) ... [2025-03-04 02:26:27,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:26:27,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:26:27,753 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) [2025-03-04 02:26:27,755 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 [2025-03-04 02:26:27,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 02:26:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 02:26:27,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 02:26:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 02:26:27,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 02:26:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 02:26:27,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 02:26:27,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-04 02:26:27,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-04 02:26:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 02:26:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 02:26:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 02:26:27,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 02:26:27,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 02:26:27,779 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 02:26:27,860 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 02:26:27,862 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 02:26:28,036 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 02:26:28,036 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 02:26:28,134 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 02:26:28,135 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 02:26:28,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:26:28 BoogieIcfgContainer [2025-03-04 02:26:28,135 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 02:26:28,137 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 02:26:28,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 02:26:28,140 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 02:26:28,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 02:26:27" (1/3) ... [2025-03-04 02:26:28,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d668ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:26:28, skipping insertion in model container [2025-03-04 02:26:28,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:26:27" (2/3) ... [2025-03-04 02:26:28,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d668ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:26:28, skipping insertion in model container [2025-03-04 02:26:28,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:26:28" (3/3) ... [2025-03-04 02:26:28,143 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2025-03-04 02:26:28,152 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 02:26:28,154 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-mult-4.wvr.c that has 5 procedures, 37 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-04 02:26:28,154 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 02:26:28,225 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-04 02:26:28,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2025-03-04 02:26:28,301 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2025-03-04 02:26:28,303 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-04 02:26:28,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2025-03-04 02:26:28,306 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2025-03-04 02:26:28,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2025-03-04 02:26:28,315 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 02:26:28,326 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;@3b980288, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 02:26:28,328 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-04 02:26:28,341 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 02:26:28,341 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2025-03-04 02:26:28,341 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-04 02:26:28,341 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:26:28,342 INFO L206 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] [2025-03-04 02:26:28,342 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 02:26:28,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:26:28,347 INFO L85 PathProgramCache]: Analyzing trace with hash -737163647, now seen corresponding path program 1 times [2025-03-04 02:26:28,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:26:28,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612390894] [2025-03-04 02:26:28,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:26:28,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:26:28,419 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-04 02:26:28,455 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-04 02:26:28,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:26:28,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:26:28,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:26:28,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:26:28,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612390894] [2025-03-04 02:26:28,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612390894] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:26:28,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:26:28,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 02:26:28,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685991960] [2025-03-04 02:26:28,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:26:28,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 02:26:28,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:26:28,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 02:26:28,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 02:26:28,780 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2025-03-04 02:26:28,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2025-03-04 02:26:28,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:26:28,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2025-03-04 02:26:28,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:26:29,284 INFO L124 PetriNetUnfolderBase]: 3042/4231 cut-off events. [2025-03-04 02:26:29,285 INFO L125 PetriNetUnfolderBase]: For 343/343 co-relation queries the response was YES. [2025-03-04 02:26:29,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8631 conditions, 4231 events. 3042/4231 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18749 event pairs, 763 based on Foata normal form. 152/4373 useless extension candidates. Maximal degree in co-relation 7625. Up to 3203 conditions per place. [2025-03-04 02:26:29,319 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 46 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2025-03-04 02:26:29,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 259 flow [2025-03-04 02:26:29,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 02:26:29,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 02:26:29,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2025-03-04 02:26:29,332 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.675 [2025-03-04 02:26:29,333 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 81 transitions. [2025-03-04 02:26:29,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 259 flow [2025-03-04 02:26:29,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-03-04 02:26:29,346 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2025-03-04 02:26:29,348 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2025-03-04 02:26:29,352 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2025-03-04 02:26:29,352 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2025-03-04 02:26:29,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2025-03-04 02:26:29,353 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:26:29,353 INFO L206 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] [2025-03-04 02:26:29,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 02:26:29,354 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 02:26:29,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:26:29,355 INFO L85 PathProgramCache]: Analyzing trace with hash 662664604, now seen corresponding path program 1 times [2025-03-04 02:26:29,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:26:29,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876588240] [2025-03-04 02:26:29,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:26:29,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:26:29,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 02:26:29,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 02:26:29,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:26:29,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:26:29,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:26:29,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:26:29,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876588240] [2025-03-04 02:26:29,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876588240] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:26:29,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:26:29,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:26:29,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894107660] [2025-03-04 02:26:29,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:26:29,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 02:26:29,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:26:29,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 02:26:29,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 02:26:29,558 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2025-03-04 02:26:29,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2025-03-04 02:26:29,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:26:29,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2025-03-04 02:26:29,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:26:30,612 INFO L124 PetriNetUnfolderBase]: 13495/17583 cut-off events. [2025-03-04 02:26:30,613 INFO L125 PetriNetUnfolderBase]: For 1786/1786 co-relation queries the response was YES. [2025-03-04 02:26:30,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39169 conditions, 17583 events. 13495/17583 cut-off events. For 1786/1786 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 83194 event pairs, 4626 based on Foata normal form. 0/14230 useless extension candidates. Maximal degree in co-relation 7257. Up to 9386 conditions per place. [2025-03-04 02:26:30,693 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 96 selfloop transitions, 10 changer transitions 0/107 dead transitions. [2025-03-04 02:26:30,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 107 transitions, 497 flow [2025-03-04 02:26:30,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 02:26:30,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 02:26:30,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2025-03-04 02:26:30,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.635 [2025-03-04 02:26:30,695 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 127 transitions. [2025-03-04 02:26:30,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 107 transitions, 497 flow [2025-03-04 02:26:30,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 107 transitions, 489 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 02:26:30,702 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 165 flow [2025-03-04 02:26:30,702 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2025-03-04 02:26:30,702 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2025-03-04 02:26:30,702 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 165 flow [2025-03-04 02:26:30,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2025-03-04 02:26:30,703 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:26:30,703 INFO L206 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] [2025-03-04 02:26:30,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 02:26:30,703 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 02:26:30,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:26:30,708 INFO L85 PathProgramCache]: Analyzing trace with hash -582747302, now seen corresponding path program 2 times [2025-03-04 02:26:30,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:26:30,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084241481] [2025-03-04 02:26:30,708 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 02:26:30,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:26:30,719 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-03-04 02:26:30,735 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 02:26:30,735 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 02:26:30,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:26:30,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:26:30,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:26:30,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084241481] [2025-03-04 02:26:30,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084241481] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:26:30,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:26:30,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 02:26:30,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054142422] [2025-03-04 02:26:30,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:26:30,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 02:26:30,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:26:30,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 02:26:30,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 02:26:30,849 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2025-03-04 02:26:30,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 02:26:30,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:26:30,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2025-03-04 02:26:30,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:26:32,087 INFO L124 PetriNetUnfolderBase]: 20850/27089 cut-off events. [2025-03-04 02:26:32,087 INFO L125 PetriNetUnfolderBase]: For 12295/12295 co-relation queries the response was YES. [2025-03-04 02:26:32,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72903 conditions, 27089 events. 20850/27089 cut-off events. For 12295/12295 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 133744 event pairs, 3494 based on Foata normal form. 760/27849 useless extension candidates. Maximal degree in co-relation 42442. Up to 16632 conditions per place. [2025-03-04 02:26:32,221 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 93 selfloop transitions, 8 changer transitions 2/104 dead transitions. [2025-03-04 02:26:32,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 104 transitions, 570 flow [2025-03-04 02:26:32,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 02:26:32,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 02:26:32,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2025-03-04 02:26:32,223 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6375 [2025-03-04 02:26:32,223 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 165 flow. Second operand 4 states and 102 transitions. [2025-03-04 02:26:32,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 104 transitions, 570 flow [2025-03-04 02:26:32,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 104 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 02:26:32,234 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 251 flow [2025-03-04 02:26:32,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2025-03-04 02:26:32,236 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2025-03-04 02:26:32,236 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 251 flow [2025-03-04 02:26:32,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 02:26:32,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:26:32,236 INFO L206 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] [2025-03-04 02:26:32,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 02:26:32,237 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 02:26:32,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:26:32,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1510752062, now seen corresponding path program 3 times [2025-03-04 02:26:32,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:26:32,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514994306] [2025-03-04 02:26:32,238 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 02:26:32,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:26:32,250 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-03-04 02:26:32,267 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 02:26:32,268 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-04 02:26:32,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:26:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:26:32,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:26:32,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514994306] [2025-03-04 02:26:32,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514994306] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:26:32,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:26:32,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 02:26:32,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671799254] [2025-03-04 02:26:32,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:26:32,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 02:26:32,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:26:32,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 02:26:32,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 02:26:32,353 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2025-03-04 02:26:32,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 251 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 02:26:32,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:26:32,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2025-03-04 02:26:32,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:26:33,817 INFO L124 PetriNetUnfolderBase]: 27113/35301 cut-off events. [2025-03-04 02:26:33,818 INFO L125 PetriNetUnfolderBase]: For 34242/34242 co-relation queries the response was YES. [2025-03-04 02:26:33,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106392 conditions, 35301 events. 27113/35301 cut-off events. For 34242/34242 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 178031 event pairs, 7966 based on Foata normal form. 432/35733 useless extension candidates. Maximal degree in co-relation 39884. Up to 19571 conditions per place. [2025-03-04 02:26:33,961 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 101 selfloop transitions, 10 changer transitions 0/112 dead transitions. [2025-03-04 02:26:33,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 112 transitions, 688 flow [2025-03-04 02:26:33,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 02:26:33,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 02:26:33,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2025-03-04 02:26:33,962 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-03-04 02:26:33,962 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 251 flow. Second operand 4 states and 104 transitions. [2025-03-04 02:26:33,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 112 transitions, 688 flow [2025-03-04 02:26:33,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 112 transitions, 688 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 02:26:33,976 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 311 flow [2025-03-04 02:26:33,976 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=311, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2025-03-04 02:26:33,979 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 12 predicate places. [2025-03-04 02:26:33,980 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 311 flow [2025-03-04 02:26:33,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 02:26:33,980 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:26:33,980 INFO L206 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] [2025-03-04 02:26:33,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 02:26:33,980 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 02:26:33,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:26:33,981 INFO L85 PathProgramCache]: Analyzing trace with hash -711175366, now seen corresponding path program 1 times [2025-03-04 02:26:33,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:26:33,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202957874] [2025-03-04 02:26:33,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:26:33,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:26:33,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 02:26:34,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 02:26:34,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:26:34,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:26:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:26:34,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:26:34,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202957874] [2025-03-04 02:26:34,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202957874] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:26:34,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:26:34,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:26:34,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18845749] [2025-03-04 02:26:34,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:26:34,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 02:26:34,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:26:34,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 02:26:34,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 02:26:34,129 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2025-03-04 02:26:34,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 311 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2025-03-04 02:26:34,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:26:34,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2025-03-04 02:26:34,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:26:36,147 INFO L124 PetriNetUnfolderBase]: 28674/37800 cut-off events. [2025-03-04 02:26:36,148 INFO L125 PetriNetUnfolderBase]: For 69313/69313 co-relation queries the response was YES. [2025-03-04 02:26:36,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123754 conditions, 37800 events. 28674/37800 cut-off events. For 69313/69313 co-relation queries the response was YES. Maximal size of possible extension queue 1144. Compared 201268 event pairs, 8683 based on Foata normal form. 778/38578 useless extension candidates. Maximal degree in co-relation 52637. Up to 17888 conditions per place. [2025-03-04 02:26:36,348 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 100 selfloop transitions, 7 changer transitions 18/126 dead transitions. [2025-03-04 02:26:36,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 126 transitions, 886 flow [2025-03-04 02:26:36,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 02:26:36,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 02:26:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2025-03-04 02:26:36,350 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-03-04 02:26:36,350 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 311 flow. Second operand 5 states and 125 transitions. [2025-03-04 02:26:36,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 126 transitions, 886 flow [2025-03-04 02:26:36,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 126 transitions, 821 flow, removed 23 selfloop flow, removed 2 redundant places. [2025-03-04 02:26:36,388 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 325 flow [2025-03-04 02:26:36,388 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=325, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2025-03-04 02:26:36,389 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 16 predicate places. [2025-03-04 02:26:36,389 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 325 flow [2025-03-04 02:26:36,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2025-03-04 02:26:36,389 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:26:36,390 INFO L206 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] [2025-03-04 02:26:36,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 02:26:36,390 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 02:26:36,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:26:36,392 INFO L85 PathProgramCache]: Analyzing trace with hash 440488922, now seen corresponding path program 4 times [2025-03-04 02:26:36,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:26:36,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117761494] [2025-03-04 02:26:36,392 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 02:26:36,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:26:36,400 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-03-04 02:26:36,410 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 02:26:36,413 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 02:26:36,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:26:36,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:26:36,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:26:36,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117761494] [2025-03-04 02:26:36,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117761494] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 02:26:36,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878786411] [2025-03-04 02:26:36,623 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-04 02:26:36,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 02:26:36,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:26:36,626 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 02:26:36,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 02:26:36,674 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-03-04 02:26:36,695 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 02:26:36,695 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-04 02:26:36,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:26:36,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 02:26:36,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 02:26:36,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:26:36,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 02:26:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:26:36,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878786411] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 02:26:36,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 02:26:36,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2025-03-04 02:26:36,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816773078] [2025-03-04 02:26:36,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 02:26:36,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 02:26:36,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:26:36,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 02:26:36,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-03-04 02:26:36,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2025-03-04 02:26:36,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 325 flow. Second operand has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 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) [2025-03-04 02:26:36,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:26:36,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2025-03-04 02:26:36,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:26:39,802 INFO L124 PetriNetUnfolderBase]: 35475/46034 cut-off events. [2025-03-04 02:26:39,803 INFO L125 PetriNetUnfolderBase]: For 98634/98634 co-relation queries the response was YES. [2025-03-04 02:26:39,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161312 conditions, 46034 events. 35475/46034 cut-off events. For 98634/98634 co-relation queries the response was YES. Maximal size of possible extension queue 1205. Compared 232866 event pairs, 974 based on Foata normal form. 3442/49476 useless extension candidates. Maximal degree in co-relation 60609. Up to 10659 conditions per place. [2025-03-04 02:26:40,064 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 328 selfloop transitions, 103 changer transitions 12/444 dead transitions. [2025-03-04 02:26:40,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 444 transitions, 2942 flow [2025-03-04 02:26:40,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-04 02:26:40,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-03-04 02:26:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 556 transitions. [2025-03-04 02:26:40,066 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6043478260869565 [2025-03-04 02:26:40,067 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 325 flow. Second operand 23 states and 556 transitions. [2025-03-04 02:26:40,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 444 transitions, 2942 flow [2025-03-04 02:26:40,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 444 transitions, 2798 flow, removed 54 selfloop flow, removed 2 redundant places. [2025-03-04 02:26:40,118 INFO L231 Difference]: Finished difference. Result has 97 places, 139 transitions, 1296 flow [2025-03-04 02:26:40,118 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1296, PETRI_PLACES=97, PETRI_TRANSITIONS=139} [2025-03-04 02:26:40,119 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 53 predicate places. [2025-03-04 02:26:40,119 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 139 transitions, 1296 flow [2025-03-04 02:26:40,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 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) [2025-03-04 02:26:40,119 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:26:40,119 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:26:40,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 02:26:40,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-04 02:26:40,324 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 02:26:40,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:26:40,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1435635592, now seen corresponding path program 1 times [2025-03-04 02:26:40,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:26:40,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433461974] [2025-03-04 02:26:40,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:26:40,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:26:40,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-04 02:26:40,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-04 02:26:40,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:26:40,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:26:40,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 02:26:40,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:26:40,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433461974] [2025-03-04 02:26:40,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433461974] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:26:40,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:26:40,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:26:40,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936287541] [2025-03-04 02:26:40,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:26:40,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 02:26:40,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:26:40,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 02:26:40,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-04 02:26:40,432 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2025-03-04 02:26:40,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 139 transitions, 1296 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2025-03-04 02:26:40,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:26:40,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2025-03-04 02:26:40,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:26:45,215 INFO L124 PetriNetUnfolderBase]: 52521/68202 cut-off events. [2025-03-04 02:26:45,216 INFO L125 PetriNetUnfolderBase]: For 564282/564282 co-relation queries the response was YES. [2025-03-04 02:26:45,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334010 conditions, 68202 events. 52521/68202 cut-off events. For 564282/564282 co-relation queries the response was YES. Maximal size of possible extension queue 1598. Compared 356909 event pairs, 18448 based on Foata normal form. 1018/69220 useless extension candidates. Maximal degree in co-relation 250573. Up to 37945 conditions per place. [2025-03-04 02:26:45,659 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 263 selfloop transitions, 23 changer transitions 16/303 dead transitions. [2025-03-04 02:26:45,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 303 transitions, 3406 flow [2025-03-04 02:26:45,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 02:26:45,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 02:26:45,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2025-03-04 02:26:45,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.575 [2025-03-04 02:26:45,661 INFO L175 Difference]: Start difference. First operand has 97 places, 139 transitions, 1296 flow. Second operand 5 states and 115 transitions. [2025-03-04 02:26:45,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 303 transitions, 3406 flow [2025-03-04 02:26:50,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 303 transitions, 2911 flow, removed 123 selfloop flow, removed 6 redundant places. [2025-03-04 02:26:50,151 INFO L231 Difference]: Finished difference. Result has 95 places, 149 transitions, 1289 flow [2025-03-04 02:26:50,151 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1289, PETRI_PLACES=95, PETRI_TRANSITIONS=149} [2025-03-04 02:26:50,151 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 51 predicate places. [2025-03-04 02:26:50,151 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 149 transitions, 1289 flow [2025-03-04 02:26:50,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2025-03-04 02:26:50,152 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:26:50,152 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:26:50,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 02:26:50,154 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 02:26:50,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:26:50,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1659919136, now seen corresponding path program 2 times [2025-03-04 02:26:50,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:26:50,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582768119] [2025-03-04 02:26:50,158 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 02:26:50,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:26:50,166 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-03-04 02:26:50,175 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-03-04 02:26:50,176 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-04 02:26:50,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:26:50,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:26:50,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:26:50,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582768119] [2025-03-04 02:26:50,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582768119] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:26:50,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:26:50,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 02:26:50,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672303105] [2025-03-04 02:26:50,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:26:50,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 02:26:50,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:26:50,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 02:26:50,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 02:26:50,256 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2025-03-04 02:26:50,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 149 transitions, 1289 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-03-04 02:26:50,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:26:50,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2025-03-04 02:26:50,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:26:57,851 INFO L124 PetriNetUnfolderBase]: 84627/110030 cut-off events. [2025-03-04 02:26:57,851 INFO L125 PetriNetUnfolderBase]: For 1147970/1147970 co-relation queries the response was YES. [2025-03-04 02:26:58,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559750 conditions, 110030 events. 84627/110030 cut-off events. For 1147970/1147970 co-relation queries the response was YES. Maximal size of possible extension queue 2412. Compared 606905 event pairs, 29180 based on Foata normal form. 2005/112035 useless extension candidates. Maximal degree in co-relation 522856. Up to 66144 conditions per place. [2025-03-04 02:26:58,889 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 354 selfloop transitions, 3 changer transitions 29/387 dead transitions. [2025-03-04 02:26:58,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 387 transitions, 4156 flow [2025-03-04 02:26:58,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 02:26:58,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 02:26:58,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-03-04 02:26:58,890 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6125 [2025-03-04 02:26:58,890 INFO L175 Difference]: Start difference. First operand has 95 places, 149 transitions, 1289 flow. Second operand 4 states and 98 transitions. [2025-03-04 02:26:58,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 387 transitions, 4156 flow [2025-03-04 02:27:08,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 387 transitions, 4062 flow, removed 14 selfloop flow, removed 2 redundant places. [2025-03-04 02:27:08,458 INFO L231 Difference]: Finished difference. Result has 97 places, 151 transitions, 1321 flow [2025-03-04 02:27:08,458 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1321, PETRI_PLACES=97, PETRI_TRANSITIONS=151} [2025-03-04 02:27:08,458 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 53 predicate places. [2025-03-04 02:27:08,458 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 151 transitions, 1321 flow [2025-03-04 02:27:08,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-03-04 02:27:08,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:27:08,459 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:27:08,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-04 02:27:08,459 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-04 02:27:08,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:27:08,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1054403788, now seen corresponding path program 3 times [2025-03-04 02:27:08,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:27:08,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105803139] [2025-03-04 02:27:08,460 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 02:27:08,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:27:08,465 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 1 equivalence classes. [2025-03-04 02:27:08,475 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-04 02:27:08,475 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-04 02:27:08,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:27:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:27:08,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:27:08,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105803139] [2025-03-04 02:27:08,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105803139] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:27:08,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:27:08,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:27:08,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099534081] [2025-03-04 02:27:08,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:27:08,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 02:27:08,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:27:08,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 02:27:08,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-04 02:27:08,582 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2025-03-04 02:27:08,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 151 transitions, 1321 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2025-03-04 02:27:08,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:27:08,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2025-03-04 02:27:08,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:27:16,920 INFO L124 PetriNetUnfolderBase]: 92239/119984 cut-off events. [2025-03-04 02:27:16,920 INFO L125 PetriNetUnfolderBase]: For 1179629/1179629 co-relation queries the response was YES. [2025-03-04 02:27:17,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627948 conditions, 119984 events. 92239/119984 cut-off events. For 1179629/1179629 co-relation queries the response was YES. Maximal size of possible extension queue 2605. Compared 665809 event pairs, 35309 based on Foata normal form. 422/120406 useless extension candidates. Maximal degree in co-relation 475630. Up to 71053 conditions per place. [2025-03-04 02:27:17,827 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 273 selfloop transitions, 58 changer transitions 2/334 dead transitions. [2025-03-04 02:27:17,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 334 transitions, 3642 flow