./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:32:02,967 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:32:03,012 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:32:03,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:32:03,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:32:03,034 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:32:03,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:32:03,034 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:32:03,034 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:32:03,034 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:32:03,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:32:03,034 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:32:03,035 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:32:03,035 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:32:03,035 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:32:03,035 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:32:03,035 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:32:03,035 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:32:03,035 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:32:03,035 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:32:03,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:32:03,035 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:32:03,035 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:32:03,035 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:32:03,035 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:32:03,035 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:32:03,035 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:32:03,035 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:32:03,035 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:32:03,036 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:32:03,036 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:32:03,036 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:32:03,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:32:03,036 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:32:03,036 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:32:03,036 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:32:03,036 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:32:03,036 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:32:03,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:32:03,036 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:32:03,036 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:32:03,036 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:32:03,036 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:32:03,036 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-jdk21/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 -> df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024 [2025-02-06 04:32:03,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:32:03,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:32:03,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:32:03,259 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:32:03,259 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:32:03,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2025-02-06 04:32:04,386 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/64403ee12/f7803701697c4d4f924fb709573c3962/FLAGd10e625e5 [2025-02-06 04:32:04,618 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:32:04,619 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2025-02-06 04:32:04,626 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/64403ee12/f7803701697c4d4f924fb709573c3962/FLAGd10e625e5 [2025-02-06 04:32:04,643 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/64403ee12/f7803701697c4d4f924fb709573c3962 [2025-02-06 04:32:04,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:32:04,646 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:32:04,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:32:04,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:32:04,651 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:32:04,651 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:32:04" (1/1) ... [2025-02-06 04:32:04,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539d3b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:04, skipping insertion in model container [2025-02-06 04:32:04,653 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:32:04" (1/1) ... [2025-02-06 04:32:04,668 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:32:04,784 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c[2904,2917] [2025-02-06 04:32:04,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:32:04,793 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:32:04,810 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c[2904,2917] [2025-02-06 04:32:04,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:32:04,829 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:32:04,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:04 WrapperNode [2025-02-06 04:32:04,830 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:32:04,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:32:04,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:32:04,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:32:04,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:04" (1/1) ... [2025-02-06 04:32:04,840 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:04" (1/1) ... [2025-02-06 04:32:04,850 INFO L138 Inliner]: procedures = 24, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2025-02-06 04:32:04,851 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:32:04,851 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:32:04,851 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:32:04,851 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:32:04,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:04" (1/1) ... [2025-02-06 04:32:04,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:04" (1/1) ... [2025-02-06 04:32:04,858 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:04" (1/1) ... [2025-02-06 04:32:04,867 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]. [2025-02-06 04:32:04,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:04" (1/1) ... [2025-02-06 04:32:04,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:04" (1/1) ... [2025-02-06 04:32:04,871 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:04" (1/1) ... [2025-02-06 04:32:04,871 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:04" (1/1) ... [2025-02-06 04:32:04,872 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:04" (1/1) ... [2025-02-06 04:32:04,872 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:04" (1/1) ... [2025-02-06 04:32:04,874 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:32:04,874 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:32:04,874 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:32:04,874 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:32:04,875 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:04" (1/1) ... [2025-02-06 04:32:04,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:32:04,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:32:04,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:32:04,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:32:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:32:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:32:04,915 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:32:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:32:04,915 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:32:04,916 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 04:32:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 04:32:04,916 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-06 04:32:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-06 04:32:04,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:32:04,916 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-02-06 04:32:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-02-06 04:32:04,916 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-02-06 04:32:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-02-06 04:32:04,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:32:04,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:32:04,917 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:32:04,980 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:32:04,982 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:32:05,146 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:32:05,146 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:32:05,252 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:32:05,252 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:32:05,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:32:05 BoogieIcfgContainer [2025-02-06 04:32:05,253 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:32:05,254 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:32:05,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:32:05,259 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:32:05,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:32:04" (1/3) ... [2025-02-06 04:32:05,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b61454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:32:05, skipping insertion in model container [2025-02-06 04:32:05,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:32:04" (2/3) ... [2025-02-06 04:32:05,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b61454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:32:05, skipping insertion in model container [2025-02-06 04:32:05,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:32:05" (3/3) ... [2025-02-06 04:32:05,261 INFO L128 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2025-02-06 04:32:05,273 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:32:05,274 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bench-exp3x3-opt.wvr.c that has 7 procedures, 41 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-02-06 04:32:05,274 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:32:05,339 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-02-06 04:32:05,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 46 transitions, 134 flow [2025-02-06 04:32:05,408 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2025-02-06 04:32:05,410 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-06 04:32:05,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 40 events. 6/40 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 25 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-02-06 04:32:05,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 46 transitions, 134 flow [2025-02-06 04:32:05,417 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 114 flow [2025-02-06 04:32:05,425 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:32:05,434 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;@ecf4344, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:32:05,438 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-02-06 04:32:05,457 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:32:05,458 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2025-02-06 04:32:05,458 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-06 04:32:05,458 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:32:05,458 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, 1, 1, 1, 1] [2025-02-06 04:32:05,459 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 4 more)] === [2025-02-06 04:32:05,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:32:05,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1357419795, now seen corresponding path program 1 times [2025-02-06 04:32:05,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:32:05,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361554895] [2025-02-06 04:32:05,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:32:05,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:32:05,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 04:32:05,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 04:32:05,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:32:05,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:05,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:32:05,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:32:05,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361554895] [2025-02-06 04:32:05,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361554895] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:32:05,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:32:05,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:32:05,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895891465] [2025-02-06 04:32:05,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:32:05,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:32:05,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:32:05,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:32:05,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:32:05,880 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-02-06 04:32:05,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2025-02-06 04:32:05,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:32:05,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-02-06 04:32:05,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:32:07,485 INFO L124 PetriNetUnfolderBase]: 21791/25329 cut-off events. [2025-02-06 04:32:07,485 INFO L125 PetriNetUnfolderBase]: For 1331/1331 co-relation queries the response was YES. [2025-02-06 04:32:07,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51798 conditions, 25329 events. 21791/25329 cut-off events. For 1331/1331 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 88393 event pairs, 3998 based on Foata normal form. 1/13868 useless extension candidates. Maximal degree in co-relation 44804. Up to 16365 conditions per place. [2025-02-06 04:32:07,653 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 49 selfloop transitions, 3 changer transitions 1/60 dead transitions. [2025-02-06 04:32:07,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 283 flow [2025-02-06 04:32:07,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:32:07,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:32:07,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2025-02-06 04:32:07,665 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2025-02-06 04:32:07,666 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 114 flow. Second operand 3 states and 93 transitions. [2025-02-06 04:32:07,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 283 flow [2025-02-06 04:32:07,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 60 transitions, 245 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-02-06 04:32:07,695 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 109 flow [2025-02-06 04:32:07,698 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2025-02-06 04:32:07,702 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -9 predicate places. [2025-02-06 04:32:07,703 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 109 flow [2025-02-06 04:32:07,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2025-02-06 04:32:07,703 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:32:07,703 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:32:07,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:32:07,704 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 4 more)] === [2025-02-06 04:32:07,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:32:07,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1492973893, now seen corresponding path program 1 times [2025-02-06 04:32:07,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:32:07,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589017854] [2025-02-06 04:32:07,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:32:07,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:32:07,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 04:32:07,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 04:32:07,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:32:07,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:07,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:32:07,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:32:07,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589017854] [2025-02-06 04:32:07,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589017854] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:32:07,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:32:07,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:32:07,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731677778] [2025-02-06 04:32:07,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:32:07,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:32:07,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:32:07,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:32:07,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:32:07,840 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-02-06 04:32:07,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2025-02-06 04:32:07,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:32:07,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-02-06 04:32:07,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:32:09,143 INFO L124 PetriNetUnfolderBase]: 27517/32094 cut-off events. [2025-02-06 04:32:09,144 INFO L125 PetriNetUnfolderBase]: For 4232/4232 co-relation queries the response was YES. [2025-02-06 04:32:09,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70072 conditions, 32094 events. 27517/32094 cut-off events. For 4232/4232 co-relation queries the response was YES. Maximal size of possible extension queue 1136. Compared 118238 event pairs, 4313 based on Foata normal form. 1/21678 useless extension candidates. Maximal degree in co-relation 22975. Up to 23265 conditions per place. [2025-02-06 04:32:09,313 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 55 selfloop transitions, 3 changer transitions 3/68 dead transitions. [2025-02-06 04:32:09,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 68 transitions, 304 flow [2025-02-06 04:32:09,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:32:09,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:32:09,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-02-06 04:32:09,316 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7028985507246377 [2025-02-06 04:32:09,316 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 109 flow. Second operand 3 states and 97 transitions. [2025-02-06 04:32:09,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 68 transitions, 304 flow [2025-02-06 04:32:09,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 68 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:32:09,320 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 125 flow [2025-02-06 04:32:09,320 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2025-02-06 04:32:09,321 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2025-02-06 04:32:09,321 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 125 flow [2025-02-06 04:32:09,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2025-02-06 04:32:09,322 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:32:09,322 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, 1, 1, 1, 1, 1, 1] [2025-02-06 04:32:09,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:32:09,323 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 4 more)] === [2025-02-06 04:32:09,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:32:09,324 INFO L85 PathProgramCache]: Analyzing trace with hash -435221560, now seen corresponding path program 1 times [2025-02-06 04:32:09,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:32:09,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871740307] [2025-02-06 04:32:09,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:32:09,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:32:09,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 04:32:09,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 04:32:09,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:32:09,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:09,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:32:09,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:32:09,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871740307] [2025-02-06 04:32:09,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871740307] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:32:09,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:32:09,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:32:09,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897558868] [2025-02-06 04:32:09,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:32:09,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:32:09,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:32:09,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:32:09,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:32:09,470 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-02-06 04:32:09,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2025-02-06 04:32:09,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:32:09,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-02-06 04:32:09,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:32:11,039 INFO L124 PetriNetUnfolderBase]: 36425/42807 cut-off events. [2025-02-06 04:32:11,040 INFO L125 PetriNetUnfolderBase]: For 12618/12618 co-relation queries the response was YES. [2025-02-06 04:32:11,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101044 conditions, 42807 events. 36425/42807 cut-off events. For 12618/12618 co-relation queries the response was YES. Maximal size of possible extension queue 1538. Compared 170397 event pairs, 6150 based on Foata normal form. 1/36346 useless extension candidates. Maximal degree in co-relation 33662. Up to 30370 conditions per place. [2025-02-06 04:32:11,198 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 61 selfloop transitions, 3 changer transitions 5/76 dead transitions. [2025-02-06 04:32:11,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 76 transitions, 358 flow [2025-02-06 04:32:11,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:32:11,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:32:11,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-02-06 04:32:11,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7318840579710145 [2025-02-06 04:32:11,200 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 125 flow. Second operand 3 states and 101 transitions. [2025-02-06 04:32:11,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 76 transitions, 358 flow [2025-02-06 04:32:11,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 76 transitions, 353 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:32:11,202 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 141 flow [2025-02-06 04:32:11,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2025-02-06 04:32:11,203 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2025-02-06 04:32:11,203 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 141 flow [2025-02-06 04:32:11,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2025-02-06 04:32:11,203 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:32:11,203 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, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:32:11,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:32:11,204 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 4 more)] === [2025-02-06 04:32:11,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:32:11,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1773377327, now seen corresponding path program 1 times [2025-02-06 04:32:11,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:32:11,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456919627] [2025-02-06 04:32:11,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:32:11,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:32:11,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 04:32:11,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 04:32:11,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:32:11,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:32:11,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:32:11,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456919627] [2025-02-06 04:32:11,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456919627] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:32:11,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:32:11,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:32:11,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704393696] [2025-02-06 04:32:11,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:32:11,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:32:11,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:32:11,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:32:11,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:32:11,302 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-02-06 04:32:11,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:32:11,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:32:11,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-02-06 04:32:11,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:32:13,047 INFO L124 PetriNetUnfolderBase]: 36055/42325 cut-off events. [2025-02-06 04:32:13,047 INFO L125 PetriNetUnfolderBase]: For 16711/16711 co-relation queries the response was YES. [2025-02-06 04:32:13,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105198 conditions, 42325 events. 36055/42325 cut-off events. For 16711/16711 co-relation queries the response was YES. Maximal size of possible extension queue 1512. Compared 166040 event pairs, 982 based on Foata normal form. 562/42777 useless extension candidates. Maximal degree in co-relation 35269. Up to 17325 conditions per place. [2025-02-06 04:32:13,228 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 102 selfloop transitions, 6 changer transitions 11/126 dead transitions. [2025-02-06 04:32:13,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 126 transitions, 615 flow [2025-02-06 04:32:13,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:32:13,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:32:13,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2025-02-06 04:32:13,230 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7347826086956522 [2025-02-06 04:32:13,230 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 141 flow. Second operand 5 states and 169 transitions. [2025-02-06 04:32:13,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 126 transitions, 615 flow [2025-02-06 04:32:13,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 126 transitions, 611 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:32:13,234 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 162 flow [2025-02-06 04:32:13,234 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2025-02-06 04:32:13,236 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2025-02-06 04:32:13,236 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 162 flow [2025-02-06 04:32:13,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:32:13,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:32:13,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:32:13,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:32:13,236 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 4 more)] === [2025-02-06 04:32:13,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:32:13,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1248237662, now seen corresponding path program 1 times [2025-02-06 04:32:13,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:32:13,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728572510] [2025-02-06 04:32:13,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:32:13,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:32:13,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 04:32:13,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 04:32:13,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:32:13,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:32:13,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:32:13,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728572510] [2025-02-06 04:32:13,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728572510] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:32:13,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264932041] [2025-02-06 04:32:13,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:32:13,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:32:13,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:32:13,343 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:32:13,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 04:32:13,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 04:32:13,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 04:32:13,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:32:13,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:13,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 04:32:13,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:32:13,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:32:13,506 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:32:13,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:32:13,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264932041] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:32:13,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:32:13,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2025-02-06 04:32:13,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613329664] [2025-02-06 04:32:13,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:32:13,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:32:13,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:32:13,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:32:13,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:32:13,579 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-02-06 04:32:13,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2025-02-06 04:32:13,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:32:13,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-02-06 04:32:13,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:32:15,206 INFO L124 PetriNetUnfolderBase]: 35781/42567 cut-off events. [2025-02-06 04:32:15,206 INFO L125 PetriNetUnfolderBase]: For 25310/25310 co-relation queries the response was YES. [2025-02-06 04:32:15,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114178 conditions, 42567 events. 35781/42567 cut-off events. For 25310/25310 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 178264 event pairs, 4692 based on Foata normal form. 917/43064 useless extension candidates. Maximal degree in co-relation 39089. Up to 20852 conditions per place. [2025-02-06 04:32:15,525 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 108 selfloop transitions, 6 changer transitions 7/128 dead transitions. [2025-02-06 04:32:15,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 128 transitions, 693 flow [2025-02-06 04:32:15,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:32:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:32:15,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2025-02-06 04:32:15,527 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.717391304347826 [2025-02-06 04:32:15,527 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 162 flow. Second operand 5 states and 165 transitions. [2025-02-06 04:32:15,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 128 transitions, 693 flow [2025-02-06 04:32:15,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 128 transitions, 680 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:32:15,530 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 195 flow [2025-02-06 04:32:15,530 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2025-02-06 04:32:15,530 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2025-02-06 04:32:15,531 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 195 flow [2025-02-06 04:32:15,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2025-02-06 04:32:15,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:32:15,531 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, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:32:15,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 04:32:15,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:32:15,732 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 4 more)] === [2025-02-06 04:32:15,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:32:15,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1833353129, now seen corresponding path program 1 times [2025-02-06 04:32:15,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:32:15,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904058520] [2025-02-06 04:32:15,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:32:15,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:32:15,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 04:32:15,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 04:32:15,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:32:15,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:15,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:32:15,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:32:15,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904058520] [2025-02-06 04:32:15,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904058520] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:32:15,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810734536] [2025-02-06 04:32:15,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:32:15,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:32:15,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:32:15,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:32:15,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 04:32:15,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 04:32:15,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 04:32:15,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:32:15,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:15,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 04:32:15,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:32:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:32:15,927 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:32:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:32:15,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810734536] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:32:15,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:32:15,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2025-02-06 04:32:15,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721073756] [2025-02-06 04:32:15,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:32:15,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:32:15,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:32:15,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:32:15,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:32:15,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-02-06 04:32:15,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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) [2025-02-06 04:32:15,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:32:15,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-02-06 04:32:15,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:32:18,266 INFO L124 PetriNetUnfolderBase]: 41097/49285 cut-off events. [2025-02-06 04:32:18,266 INFO L125 PetriNetUnfolderBase]: For 50421/50421 co-relation queries the response was YES. [2025-02-06 04:32:18,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147695 conditions, 49285 events. 41097/49285 cut-off events. For 50421/50421 co-relation queries the response was YES. Maximal size of possible extension queue 1839. Compared 218199 event pairs, 5193 based on Foata normal form. 1141/49514 useless extension candidates. Maximal degree in co-relation 64940. Up to 24945 conditions per place. [2025-02-06 04:32:18,428 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 116 selfloop transitions, 6 changer transitions 14/143 dead transitions. [2025-02-06 04:32:18,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 143 transitions, 818 flow [2025-02-06 04:32:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:32:18,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:32:18,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2025-02-06 04:32:18,430 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7608695652173914 [2025-02-06 04:32:18,430 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 195 flow. Second operand 5 states and 175 transitions. [2025-02-06 04:32:18,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 143 transitions, 818 flow [2025-02-06 04:32:18,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 143 transitions, 801 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-02-06 04:32:18,442 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 219 flow [2025-02-06 04:32:18,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2025-02-06 04:32:18,443 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2025-02-06 04:32:18,443 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 219 flow [2025-02-06 04:32:18,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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) [2025-02-06 04:32:18,443 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:32:18,443 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, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:32:18,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 04:32:18,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:32:18,648 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 4 more)] === [2025-02-06 04:32:18,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:32:18,648 INFO L85 PathProgramCache]: Analyzing trace with hash 511250302, now seen corresponding path program 1 times [2025-02-06 04:32:18,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:32:18,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387960436] [2025-02-06 04:32:18,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:32:18,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:32:18,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 04:32:18,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 04:32:18,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:32:18,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:32:18,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:32:18,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387960436] [2025-02-06 04:32:18,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387960436] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:32:18,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:32:18,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:32:18,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855677492] [2025-02-06 04:32:18,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:32:18,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:32:18,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:32:18,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:32:18,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:32:18,727 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-02-06 04:32:18,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:32:18,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:32:18,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-02-06 04:32:18,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:32:20,129 INFO L124 PetriNetUnfolderBase]: 28207/33435 cut-off events. [2025-02-06 04:32:20,131 INFO L125 PetriNetUnfolderBase]: For 46032/46038 co-relation queries the response was YES. [2025-02-06 04:32:20,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110998 conditions, 33435 events. 28207/33435 cut-off events. For 46032/46038 co-relation queries the response was YES. Maximal size of possible extension queue 1205. Compared 131590 event pairs, 665 based on Foata normal form. 367/33682 useless extension candidates. Maximal degree in co-relation 56781. Up to 13109 conditions per place. [2025-02-06 04:32:20,253 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 89 selfloop transitions, 4 changer transitions 34/134 dead transitions. [2025-02-06 04:32:20,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 134 transitions, 841 flow [2025-02-06 04:32:20,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:32:20,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:32:20,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2025-02-06 04:32:20,254 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2025-02-06 04:32:20,254 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 219 flow. Second operand 5 states and 161 transitions. [2025-02-06 04:32:20,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 134 transitions, 841 flow [2025-02-06 04:32:20,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 134 transitions, 812 flow, removed 10 selfloop flow, removed 1 redundant places. [2025-02-06 04:32:20,394 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 221 flow [2025-02-06 04:32:20,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2025-02-06 04:32:20,395 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2025-02-06 04:32:20,395 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 221 flow [2025-02-06 04:32:20,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:32:20,395 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:32:20,395 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, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:32:20,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 04:32:20,395 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 4 more)] === [2025-02-06 04:32:20,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:32:20,396 INFO L85 PathProgramCache]: Analyzing trace with hash -2112762972, now seen corresponding path program 2 times [2025-02-06 04:32:20,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:32:20,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456276673] [2025-02-06 04:32:20,396 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:32:20,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:32:20,402 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-02-06 04:32:20,411 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 04:32:20,412 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:32:20,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:32:20,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:32:20,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456276673] [2025-02-06 04:32:20,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456276673] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:32:20,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986991275] [2025-02-06 04:32:20,483 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:32:20,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:32:20,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:32:20,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:32:20,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 04:32:20,524 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-02-06 04:32:20,545 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 04:32:20,545 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:32:20,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:20,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 04:32:20,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:32:20,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:32:20,610 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:32:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 04:32:20,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986991275] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:32:20,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:32:20,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-02-06 04:32:20,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109886282] [2025-02-06 04:32:20,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:32:20,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:32:20,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:32:20,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:32:20,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:32:20,684 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-02-06 04:32:20,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 221 flow. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 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) [2025-02-06 04:32:20,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:32:20,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-02-06 04:32:20,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:32:22,349 INFO L124 PetriNetUnfolderBase]: 19916/23672 cut-off events. [2025-02-06 04:32:22,350 INFO L125 PetriNetUnfolderBase]: For 41076/41076 co-relation queries the response was YES. [2025-02-06 04:32:22,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83023 conditions, 23672 events. 19916/23672 cut-off events. For 41076/41076 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 89036 event pairs, 257 based on Foata normal form. 1106/24728 useless extension candidates. Maximal degree in co-relation 46094. Up to 6957 conditions per place. [2025-02-06 04:32:22,495 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 290 selfloop transitions, 41 changer transitions 6/344 dead transitions. [2025-02-06 04:32:22,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 344 transitions, 2354 flow [2025-02-06 04:32:22,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 04:32:22,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 04:32:22,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 483 transitions. [2025-02-06 04:32:22,497 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6176470588235294 [2025-02-06 04:32:22,497 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 221 flow. Second operand 17 states and 483 transitions. [2025-02-06 04:32:22,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 344 transitions, 2354 flow [2025-02-06 04:32:22,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 344 transitions, 2317 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-02-06 04:32:22,540 INFO L231 Difference]: Finished difference. Result has 90 places, 93 transitions, 619 flow [2025-02-06 04:32:22,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=619, PETRI_PLACES=90, PETRI_TRANSITIONS=93} [2025-02-06 04:32:22,541 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 38 predicate places. [2025-02-06 04:32:22,541 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 93 transitions, 619 flow [2025-02-06 04:32:22,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 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) [2025-02-06 04:32:22,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:32:22,541 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:32:22,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 04:32:22,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:32:22,742 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 4 more)] === [2025-02-06 04:32:22,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:32:22,742 INFO L85 PathProgramCache]: Analyzing trace with hash 853990859, now seen corresponding path program 1 times [2025-02-06 04:32:22,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:32:22,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045894196] [2025-02-06 04:32:22,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:32:22,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:32:22,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 04:32:22,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 04:32:22,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:32:22,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:22,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:32:22,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:32:22,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045894196] [2025-02-06 04:32:22,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045894196] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:32:22,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:32:22,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:32:22,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463522229] [2025-02-06 04:32:22,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:32:22,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:32:22,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:32:22,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:32:22,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:32:22,835 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-02-06 04:32:22,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 93 transitions, 619 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:32:22,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:32:22,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-02-06 04:32:22,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:32:24,006 INFO L124 PetriNetUnfolderBase]: 19713/23589 cut-off events. [2025-02-06 04:32:24,006 INFO L125 PetriNetUnfolderBase]: For 126812/126818 co-relation queries the response was YES. [2025-02-06 04:32:24,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112573 conditions, 23589 events. 19713/23589 cut-off events. For 126812/126818 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 89423 event pairs, 998 based on Foata normal form. 204/23516 useless extension candidates. Maximal degree in co-relation 100071. Up to 9384 conditions per place. [2025-02-06 04:32:24,193 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 127 selfloop transitions, 10 changer transitions 54/198 dead transitions. [2025-02-06 04:32:24,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 198 transitions, 1761 flow [2025-02-06 04:32:24,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:32:24,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:32:24,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2025-02-06 04:32:24,194 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6652173913043479 [2025-02-06 04:32:24,195 INFO L175 Difference]: Start difference. First operand has 90 places, 93 transitions, 619 flow. Second operand 5 states and 153 transitions. [2025-02-06 04:32:24,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 198 transitions, 1761 flow [2025-02-06 04:32:24,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 198 transitions, 1675 flow, removed 28 selfloop flow, removed 2 redundant places. [2025-02-06 04:32:24,670 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 600 flow [2025-02-06 04:32:24,670 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=600, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2025-02-06 04:32:24,670 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 41 predicate places. [2025-02-06 04:32:24,671 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 600 flow [2025-02-06 04:32:24,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:32:24,671 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:32:24,671 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:32:24,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 04:32:24,671 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:32:24,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:32:24,671 INFO L85 PathProgramCache]: Analyzing trace with hash -203051585, now seen corresponding path program 2 times [2025-02-06 04:32:24,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:32:24,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390041923] [2025-02-06 04:32:24,671 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:32:24,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:32:24,677 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-02-06 04:32:24,686 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 04:32:24,686 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:32:24,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:32:24,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:32:24,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390041923] [2025-02-06 04:32:24,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390041923] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:32:24,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051967550] [2025-02-06 04:32:24,761 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:32:24,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:32:24,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:32:24,762 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:32:24,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 04:32:24,804 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-02-06 04:32:24,828 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 04:32:24,828 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:32:24,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:24,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 04:32:24,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:32:24,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:32:24,902 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:32:24,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:32:24,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051967550] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:32:24,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:32:24,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-02-06 04:32:24,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555865986] [2025-02-06 04:32:24,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:32:24,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:32:24,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:32:24,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:32:24,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:32:24,977 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2025-02-06 04:32:24,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 600 flow. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 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) [2025-02-06 04:32:24,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:32:24,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2025-02-06 04:32:24,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:32:26,230 INFO L124 PetriNetUnfolderBase]: 12943/15527 cut-off events. [2025-02-06 04:32:26,230 INFO L125 PetriNetUnfolderBase]: For 83070/83076 co-relation queries the response was YES. [2025-02-06 04:32:26,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74354 conditions, 15527 events. 12943/15527 cut-off events. For 83070/83076 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 54758 event pairs, 82 based on Foata normal form. 945/16438 useless extension candidates. Maximal degree in co-relation 64970. Up to 7455 conditions per place. [2025-02-06 04:32:26,340 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 456 selfloop transitions, 65 changer transitions 0/528 dead transitions. [2025-02-06 04:32:26,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 528 transitions, 4772 flow [2025-02-06 04:32:26,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 04:32:26,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 04:32:26,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 474 transitions. [2025-02-06 04:32:26,341 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6061381074168798 [2025-02-06 04:32:26,341 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 600 flow. Second operand 17 states and 474 transitions. [2025-02-06 04:32:26,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 528 transitions, 4772 flow [2025-02-06 04:32:26,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 528 transitions, 4735 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-02-06 04:32:26,620 INFO L231 Difference]: Finished difference. Result has 119 places, 153 transitions, 1314 flow [2025-02-06 04:32:26,620 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1314, PETRI_PLACES=119, PETRI_TRANSITIONS=153} [2025-02-06 04:32:26,621 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 67 predicate places. [2025-02-06 04:32:26,621 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 153 transitions, 1314 flow [2025-02-06 04:32:26,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 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) [2025-02-06 04:32:26,621 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:32:26,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:32:26,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 04:32:26,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-06 04:32:26,822 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:32:26,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:32:26,822 INFO L85 PathProgramCache]: Analyzing trace with hash -588016477, now seen corresponding path program 1 times [2025-02-06 04:32:26,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:32:26,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325586404] [2025-02-06 04:32:26,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:32:26,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:32:26,827 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 04:32:26,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 04:32:26,892 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:32:26,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:32:27,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:32:27,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325586404] [2025-02-06 04:32:27,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325586404] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:32:27,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274824641] [2025-02-06 04:32:27,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:32:27,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:32:27,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:32:27,256 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:32:27,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 04:32:27,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 04:32:27,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 04:32:27,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:32:27,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:32:27,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:32:27,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:32:55,771 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)