./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp2x3.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-exp2x3.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 f25d9c7e70f7f3d19e85c7cfc6427443102f5451f704dd6a19dd9a78d021a612 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:31:44,995 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:31:45,055 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:31:45,064 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:31:45,065 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:31:45,086 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:31:45,087 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:31:45,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:31:45,088 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:31:45,088 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:31:45,089 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:31:45,089 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:31:45,089 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:31:45,089 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:31:45,090 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:31:45,090 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:31:45,090 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:31:45,090 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:31:45,090 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:31:45,090 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:31:45,090 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:31:45,090 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:31:45,090 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:31:45,091 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:31:45,091 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:31:45,091 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:31:45,091 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:31:45,091 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:31:45,091 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:31:45,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:31:45,091 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:31:45,091 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:31:45,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:31:45,092 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:31:45,092 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:31:45,092 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:31:45,092 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:31:45,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:31:45,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:31:45,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:31:45,092 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:31:45,093 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:31:45,093 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:31:45,093 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 -> f25d9c7e70f7f3d19e85c7cfc6427443102f5451f704dd6a19dd9a78d021a612 [2025-02-06 04:31:45,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:31:45,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:31:45,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:31:45,325 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:31:45,325 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:31:45,326 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp2x3.wvr.c [2025-02-06 04:31:46,515 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ebdde3caf/3572814006ae4673b8d0a0b51a161227/FLAGe962b7a6f [2025-02-06 04:31:46,779 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:31:46,780 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x3.wvr.c [2025-02-06 04:31:46,794 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ebdde3caf/3572814006ae4673b8d0a0b51a161227/FLAGe962b7a6f [2025-02-06 04:31:47,114 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ebdde3caf/3572814006ae4673b8d0a0b51a161227 [2025-02-06 04:31:47,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:31:47,117 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:31:47,120 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:31:47,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:31:47,123 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:31:47,123 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:31:47" (1/1) ... [2025-02-06 04:31:47,124 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf97972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:47, skipping insertion in model container [2025-02-06 04:31:47,124 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:31:47" (1/1) ... [2025-02-06 04:31:47,137 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:31:47,252 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-exp2x3.wvr.c[2289,2302] [2025-02-06 04:31:47,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:31:47,263 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:31:47,277 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-exp2x3.wvr.c[2289,2302] [2025-02-06 04:31:47,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:31:47,290 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:31:47,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:47 WrapperNode [2025-02-06 04:31:47,291 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:31:47,293 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:31:47,293 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:31:47,293 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:31:47,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:47" (1/1) ... [2025-02-06 04:31:47,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:47" (1/1) ... [2025-02-06 04:31:47,314 INFO L138 Inliner]: procedures = 19, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2025-02-06 04:31:47,315 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:31:47,316 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:31:47,316 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:31:47,316 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:31:47,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:47" (1/1) ... [2025-02-06 04:31:47,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:47" (1/1) ... [2025-02-06 04:31:47,324 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:47" (1/1) ... [2025-02-06 04:31:47,337 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 04:31:47,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:47" (1/1) ... [2025-02-06 04:31:47,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:47" (1/1) ... [2025-02-06 04:31:47,340 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:47" (1/1) ... [2025-02-06 04:31:47,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:47" (1/1) ... [2025-02-06 04:31:47,341 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:47" (1/1) ... [2025-02-06 04:31:47,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:47" (1/1) ... [2025-02-06 04:31:47,342 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:31:47,343 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:31:47,343 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:31:47,343 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:31:47,344 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:47" (1/1) ... [2025-02-06 04:31:47,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:31:47,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:47,367 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 04:31:47,369 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 04:31:47,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:31:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:31:47,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:31:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:31:47,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:31:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 04:31:47,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 04:31:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-06 04:31:47,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-06 04:31:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:31:47,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:31:47,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:31:47,385 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 04:31:47,438 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:31:47,439 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:31:47,549 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:31:47,549 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:31:47,627 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:31:47,628 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:31:47,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:31:47 BoogieIcfgContainer [2025-02-06 04:31:47,628 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:31:47,630 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:31:47,630 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:31:47,632 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:31:47,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:31:47" (1/3) ... [2025-02-06 04:31:47,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494ed038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:31:47, skipping insertion in model container [2025-02-06 04:31:47,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:31:47" (2/3) ... [2025-02-06 04:31:47,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494ed038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:31:47, skipping insertion in model container [2025-02-06 04:31:47,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:31:47" (3/3) ... [2025-02-06 04:31:47,634 INFO L128 eAbstractionObserver]: Analyzing ICFG bench-exp2x3.wvr.c [2025-02-06 04:31:47,643 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:31:47,644 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bench-exp2x3.wvr.c that has 5 procedures, 29 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-02-06 04:31:47,644 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:31:47,678 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-06 04:31:47,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 32 transitions, 92 flow [2025-02-06 04:31:47,727 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2025-02-06 04:31:47,728 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 04:31:47,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 28 events. 4/28 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2025-02-06 04:31:47,731 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 32 transitions, 92 flow [2025-02-06 04:31:47,732 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 27 transitions, 78 flow [2025-02-06 04:31:47,737 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:31:47,744 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;@6e5cd87f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:31:47,744 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-06 04:31:47,752 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:31:47,753 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2025-02-06 04:31:47,753 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 04:31:47,753 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:47,753 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:31:47,753 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:31:47,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:47,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1118529982, now seen corresponding path program 1 times [2025-02-06 04:31:47,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:47,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920245535] [2025-02-06 04:31:47,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:47,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:47,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 04:31:47,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:31:47,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:47,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:48,085 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 04:31:48,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:48,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920245535] [2025-02-06 04:31:48,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920245535] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:31:48,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:31:48,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:31:48,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861276851] [2025-02-06 04:31:48,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:31:48,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:31:48,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:48,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:31:48,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:31:48,110 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 04:31:48,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:31:48,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:48,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 04:31:48,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:48,326 INFO L124 PetriNetUnfolderBase]: 1367/1732 cut-off events. [2025-02-06 04:31:48,326 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2025-02-06 04:31:48,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 1732 events. 1367/1732 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5584 event pairs, 123 based on Foata normal form. 1/992 useless extension candidates. Maximal degree in co-relation 3091. Up to 1541 conditions per place. [2025-02-06 04:31:48,341 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 35 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2025-02-06 04:31:48,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 219 flow [2025-02-06 04:31:48,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:31:48,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:31:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2025-02-06 04:31:48,350 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.71875 [2025-02-06 04:31:48,351 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 78 flow. Second operand 3 states and 69 transitions. [2025-02-06 04:31:48,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 219 flow [2025-02-06 04:31:48,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 189 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-06 04:31:48,362 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 95 flow [2025-02-06 04:31:48,367 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2025-02-06 04:31:48,373 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2025-02-06 04:31:48,373 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 95 flow [2025-02-06 04:31:48,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:31:48,374 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:48,374 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] [2025-02-06 04:31:48,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:31:48,374 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:31:48,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:48,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1802411535, now seen corresponding path program 1 times [2025-02-06 04:31:48,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:48,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728836278] [2025-02-06 04:31:48,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:48,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:48,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 04:31:48,419 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:31:48,419 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:48,419 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:48,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:48,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:48,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728836278] [2025-02-06 04:31:48,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728836278] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:31:48,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:31:48,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:31:48,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010722212] [2025-02-06 04:31:48,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:31:48,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:31:48,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:48,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:31:48,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:31:48,555 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 04:31:48,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 04:31:48,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:48,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 04:31:48,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:48,769 INFO L124 PetriNetUnfolderBase]: 1575/2020 cut-off events. [2025-02-06 04:31:48,769 INFO L125 PetriNetUnfolderBase]: For 572/572 co-relation queries the response was YES. [2025-02-06 04:31:48,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5016 conditions, 2020 events. 1575/2020 cut-off events. For 572/572 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7025 event pairs, 94 based on Foata normal form. 46/2056 useless extension candidates. Maximal degree in co-relation 1261. Up to 827 conditions per place. [2025-02-06 04:31:48,778 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 65 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2025-02-06 04:31:48,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 80 transitions, 387 flow [2025-02-06 04:31:48,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:31:48,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:31:48,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2025-02-06 04:31:48,779 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7125 [2025-02-06 04:31:48,779 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 95 flow. Second operand 5 states and 114 transitions. [2025-02-06 04:31:48,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 80 transitions, 387 flow [2025-02-06 04:31:48,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 80 transitions, 379 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:31:48,781 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 155 flow [2025-02-06 04:31:48,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2025-02-06 04:31:48,781 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2025-02-06 04:31:48,782 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 155 flow [2025-02-06 04:31:48,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 04:31:48,782 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:48,782 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] [2025-02-06 04:31:48,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:31:48,782 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:31:48,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:48,783 INFO L85 PathProgramCache]: Analyzing trace with hash 436092739, now seen corresponding path program 1 times [2025-02-06 04:31:48,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:48,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650130378] [2025-02-06 04:31:48,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:48,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:48,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 04:31:48,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:31:48,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:48,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:48,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:48,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650130378] [2025-02-06 04:31:48,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650130378] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:31:48,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429098297] [2025-02-06 04:31:48,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:48,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:48,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:48,859 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 04:31:48,869 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 04:31:48,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 04:31:48,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:31:48,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:48,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:48,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 04:31:48,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:31:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:49,075 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:31:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:49,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429098297] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:31:49,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:31:49,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-02-06 04:31:49,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757576518] [2025-02-06 04:31:49,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:31:49,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:31:49,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:49,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:31:49,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:31:49,139 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 04:31:49,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 155 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 04:31:49,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:49,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 04:31:49,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:49,386 INFO L124 PetriNetUnfolderBase]: 1688/2219 cut-off events. [2025-02-06 04:31:49,386 INFO L125 PetriNetUnfolderBase]: For 1818/1818 co-relation queries the response was YES. [2025-02-06 04:31:49,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6670 conditions, 2219 events. 1688/2219 cut-off events. For 1818/1818 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 8555 event pairs, 345 based on Foata normal form. 61/2245 useless extension candidates. Maximal degree in co-relation 2374. Up to 1022 conditions per place. [2025-02-06 04:31:49,398 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 69 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2025-02-06 04:31:49,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 84 transitions, 459 flow [2025-02-06 04:31:49,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:31:49,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:31:49,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2025-02-06 04:31:49,399 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7375 [2025-02-06 04:31:49,400 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 155 flow. Second operand 5 states and 118 transitions. [2025-02-06 04:31:49,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 84 transitions, 459 flow [2025-02-06 04:31:49,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 84 transitions, 459 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 04:31:49,404 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 211 flow [2025-02-06 04:31:49,404 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=211, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2025-02-06 04:31:49,404 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2025-02-06 04:31:49,404 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 211 flow [2025-02-06 04:31:49,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 04:31:49,405 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:49,405 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] [2025-02-06 04:31:49,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 04:31:49,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:49,607 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:31:49,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:49,607 INFO L85 PathProgramCache]: Analyzing trace with hash -406252524, now seen corresponding path program 1 times [2025-02-06 04:31:49,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:49,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435913034] [2025-02-06 04:31:49,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:49,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:49,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 04:31:49,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:31:49,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:49,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:49,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:49,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435913034] [2025-02-06 04:31:49,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435913034] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:31:49,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693127765] [2025-02-06 04:31:49,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:49,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:49,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:49,704 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 04:31:49,706 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 04:31:49,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 04:31:49,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:31:49,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:49,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:49,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 04:31:49,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:31:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:49,888 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:31:49,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:49,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693127765] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:31:49,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:31:49,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-02-06 04:31:49,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021720895] [2025-02-06 04:31:49,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:31:49,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:31:49,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:49,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:31:49,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:31:49,943 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 04:31:49,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 211 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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 04:31:49,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:49,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 04:31:49,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:50,192 INFO L124 PetriNetUnfolderBase]: 2058/2808 cut-off events. [2025-02-06 04:31:50,193 INFO L125 PetriNetUnfolderBase]: For 6244/6256 co-relation queries the response was YES. [2025-02-06 04:31:50,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9605 conditions, 2808 events. 2058/2808 cut-off events. For 6244/6256 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 12061 event pairs, 334 based on Foata normal form. 78/2826 useless extension candidates. Maximal degree in co-relation 5846. Up to 1193 conditions per place. [2025-02-06 04:31:50,207 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 91 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2025-02-06 04:31:50,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 104 transitions, 781 flow [2025-02-06 04:31:50,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:31:50,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:31:50,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2025-02-06 04:31:50,209 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.675 [2025-02-06 04:31:50,209 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 211 flow. Second operand 5 states and 108 transitions. [2025-02-06 04:31:50,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 104 transitions, 781 flow [2025-02-06 04:31:50,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 104 transitions, 752 flow, removed 8 selfloop flow, removed 1 redundant places. [2025-02-06 04:31:50,214 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 255 flow [2025-02-06 04:31:50,214 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2025-02-06 04:31:50,214 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2025-02-06 04:31:50,214 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 255 flow [2025-02-06 04:31:50,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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 04:31:50,215 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:50,215 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] [2025-02-06 04:31:50,221 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 04:31:50,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:50,419 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:31:50,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:50,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1375486482, now seen corresponding path program 2 times [2025-02-06 04:31:50,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:50,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675003613] [2025-02-06 04:31:50,420 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:31:50,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:50,426 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-06 04:31:50,434 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:31:50,435 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:31:50,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:50,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:50,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:50,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675003613] [2025-02-06 04:31:50,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675003613] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:31:50,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:31:50,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:31:50,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588968814] [2025-02-06 04:31:50,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:31:50,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:31:50,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:50,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:31:50,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:31:50,487 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 04:31:50,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 04:31:50,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:50,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 04:31:50,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:50,714 INFO L124 PetriNetUnfolderBase]: 1859/2509 cut-off events. [2025-02-06 04:31:50,714 INFO L125 PetriNetUnfolderBase]: For 6195/6204 co-relation queries the response was YES. [2025-02-06 04:31:50,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10032 conditions, 2509 events. 1859/2509 cut-off events. For 6195/6204 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9976 event pairs, 108 based on Foata normal form. 38/2515 useless extension candidates. Maximal degree in co-relation 6148. Up to 1056 conditions per place. [2025-02-06 04:31:50,729 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 92 selfloop transitions, 11 changer transitions 0/108 dead transitions. [2025-02-06 04:31:50,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 108 transitions, 830 flow [2025-02-06 04:31:50,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:31:50,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:31:50,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2025-02-06 04:31:50,732 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.66875 [2025-02-06 04:31:50,733 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 255 flow. Second operand 5 states and 107 transitions. [2025-02-06 04:31:50,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 108 transitions, 830 flow [2025-02-06 04:31:50,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 108 transitions, 830 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 04:31:50,743 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 316 flow [2025-02-06 04:31:50,743 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=316, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2025-02-06 04:31:50,744 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2025-02-06 04:31:50,745 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 316 flow [2025-02-06 04:31:50,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 04:31:50,745 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:50,745 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] [2025-02-06 04:31:50,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:31:50,745 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:31:50,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:50,746 INFO L85 PathProgramCache]: Analyzing trace with hash 252546659, now seen corresponding path program 1 times [2025-02-06 04:31:50,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:50,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235088508] [2025-02-06 04:31:50,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:50,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:50,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 04:31:50,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:31:50,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:50,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:50,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:50,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235088508] [2025-02-06 04:31:50,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235088508] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:31:50,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:31:50,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:31:50,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580709522] [2025-02-06 04:31:50,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:31:50,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:31:50,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:50,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:31:50,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:31:50,826 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 04:31:50,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 04:31:50,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:50,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 04:31:50,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:51,022 INFO L124 PetriNetUnfolderBase]: 1819/2469 cut-off events. [2025-02-06 04:31:51,023 INFO L125 PetriNetUnfolderBase]: For 7212/7221 co-relation queries the response was YES. [2025-02-06 04:31:51,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10647 conditions, 2469 events. 1819/2469 cut-off events. For 7212/7221 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 10014 event pairs, 82 based on Foata normal form. 41/2478 useless extension candidates. Maximal degree in co-relation 6522. Up to 1147 conditions per place. [2025-02-06 04:31:51,038 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 90 selfloop transitions, 8 changer transitions 2/105 dead transitions. [2025-02-06 04:31:51,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 105 transitions, 839 flow [2025-02-06 04:31:51,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:31:51,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:31:51,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2025-02-06 04:31:51,039 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65625 [2025-02-06 04:31:51,039 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 316 flow. Second operand 5 states and 105 transitions. [2025-02-06 04:31:51,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 105 transitions, 839 flow [2025-02-06 04:31:51,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 105 transitions, 828 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-02-06 04:31:51,046 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 319 flow [2025-02-06 04:31:51,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2025-02-06 04:31:51,046 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2025-02-06 04:31:51,046 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 319 flow [2025-02-06 04:31:51,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 04:31:51,046 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:51,046 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] [2025-02-06 04:31:51,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 04:31:51,047 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:31:51,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:51,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2130319807, now seen corresponding path program 2 times [2025-02-06 04:31:51,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:51,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504658954] [2025-02-06 04:31:51,047 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:31:51,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:51,052 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-06 04:31:51,056 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:31:51,056 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:31:51,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:51,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:51,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504658954] [2025-02-06 04:31:51,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504658954] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:31:51,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063610417] [2025-02-06 04:31:51,107 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:31:51,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:51,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:51,112 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 04:31:51,113 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 04:31:51,145 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-06 04:31:51,159 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:31:51,159 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:31:51,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:51,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 04:31:51,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:31:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:51,281 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:31:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:51,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063610417] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:31:51,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:31:51,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-02-06 04:31:51,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846799781] [2025-02-06 04:31:51,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:31:51,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:31:51,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:51,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:31:51,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:31:51,334 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 04:31:51,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 319 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 04:31:51,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:51,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 04:31:51,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:51,534 INFO L124 PetriNetUnfolderBase]: 1745/2409 cut-off events. [2025-02-06 04:31:51,535 INFO L125 PetriNetUnfolderBase]: For 7551/7560 co-relation queries the response was YES. [2025-02-06 04:31:51,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10700 conditions, 2409 events. 1745/2409 cut-off events. For 7551/7560 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10250 event pairs, 303 based on Foata normal form. 75/2438 useless extension candidates. Maximal degree in co-relation 6553. Up to 1314 conditions per place. [2025-02-06 04:31:51,578 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 91 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2025-02-06 04:31:51,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 104 transitions, 859 flow [2025-02-06 04:31:51,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:31:51,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:31:51,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2025-02-06 04:31:51,580 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.64375 [2025-02-06 04:31:51,580 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 319 flow. Second operand 5 states and 103 transitions. [2025-02-06 04:31:51,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 104 transitions, 859 flow [2025-02-06 04:31:51,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 104 transitions, 846 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-02-06 04:31:51,586 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 359 flow [2025-02-06 04:31:51,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=359, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2025-02-06 04:31:51,587 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2025-02-06 04:31:51,587 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 359 flow [2025-02-06 04:31:51,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 04:31:51,587 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:51,587 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] [2025-02-06 04:31:51,595 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 04:31:51,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:51,789 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:31:51,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:51,790 INFO L85 PathProgramCache]: Analyzing trace with hash -94321781, now seen corresponding path program 2 times [2025-02-06 04:31:51,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:51,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118484570] [2025-02-06 04:31:51,790 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:31:51,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:51,797 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-06 04:31:51,804 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:31:51,805 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:31:51,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:51,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:51,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:51,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118484570] [2025-02-06 04:31:51,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118484570] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:31:51,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:31:51,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:31:51,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405008436] [2025-02-06 04:31:51,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:31:51,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:31:51,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:51,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:31:51,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:31:51,857 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 04:31:51,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 359 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 04:31:51,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:51,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 04:31:51,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:52,063 INFO L124 PetriNetUnfolderBase]: 1515/2042 cut-off events. [2025-02-06 04:31:52,063 INFO L125 PetriNetUnfolderBase]: For 7263/7269 co-relation queries the response was YES. [2025-02-06 04:31:52,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9624 conditions, 2042 events. 1515/2042 cut-off events. For 7263/7269 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8040 event pairs, 89 based on Foata normal form. 35/2071 useless extension candidates. Maximal degree in co-relation 8506. Up to 864 conditions per place. [2025-02-06 04:31:52,077 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 108 selfloop transitions, 9 changer transitions 4/126 dead transitions. [2025-02-06 04:31:52,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 126 transitions, 1072 flow [2025-02-06 04:31:52,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:31:52,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:31:52,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2025-02-06 04:31:52,079 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7125 [2025-02-06 04:31:52,079 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 359 flow. Second operand 5 states and 114 transitions. [2025-02-06 04:31:52,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 126 transitions, 1072 flow [2025-02-06 04:31:52,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 126 transitions, 1014 flow, removed 20 selfloop flow, removed 2 redundant places. [2025-02-06 04:31:52,087 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 354 flow [2025-02-06 04:31:52,088 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2025-02-06 04:31:52,088 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2025-02-06 04:31:52,089 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 354 flow [2025-02-06 04:31:52,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 04:31:52,089 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:52,090 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] [2025-02-06 04:31:52,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 04:31:52,090 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:31:52,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:52,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2096889227, now seen corresponding path program 2 times [2025-02-06 04:31:52,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:52,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392718606] [2025-02-06 04:31:52,091 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:31:52,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:52,096 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-06 04:31:52,104 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:31:52,105 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:31:52,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:52,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:52,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392718606] [2025-02-06 04:31:52,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392718606] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:31:52,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918381485] [2025-02-06 04:31:52,159 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:31:52,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:52,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:52,161 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 04:31:52,179 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 04:31:52,206 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-06 04:31:52,219 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:31:52,220 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:31:52,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:52,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 04:31:52,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:31:52,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:52,319 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:31:52,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:52,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918381485] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:31:52,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:31:52,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-02-06 04:31:52,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971341724] [2025-02-06 04:31:52,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:31:52,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:31:52,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:52,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:31:52,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:31:52,368 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 04:31:52,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 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 04:31:52,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:52,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 04:31:52,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:52,575 INFO L124 PetriNetUnfolderBase]: 1447/1987 cut-off events. [2025-02-06 04:31:52,576 INFO L125 PetriNetUnfolderBase]: For 6932/6956 co-relation queries the response was YES. [2025-02-06 04:31:52,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9421 conditions, 1987 events. 1447/1987 cut-off events. For 6932/6956 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8203 event pairs, 375 based on Foata normal form. 72/2040 useless extension candidates. Maximal degree in co-relation 8390. Up to 1150 conditions per place. [2025-02-06 04:31:52,587 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 111 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2025-02-06 04:31:52,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 124 transitions, 1043 flow [2025-02-06 04:31:52,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:31:52,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:31:52,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2025-02-06 04:31:52,588 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.69375 [2025-02-06 04:31:52,588 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 354 flow. Second operand 5 states and 111 transitions. [2025-02-06 04:31:52,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 124 transitions, 1043 flow [2025-02-06 04:31:52,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 124 transitions, 1036 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:31:52,594 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 401 flow [2025-02-06 04:31:52,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=401, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2025-02-06 04:31:52,594 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2025-02-06 04:31:52,594 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 401 flow [2025-02-06 04:31:52,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 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 04:31:52,595 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:52,595 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] [2025-02-06 04:31:52,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 04:31:52,799 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,SelfDestructingSolverStorable8 [2025-02-06 04:31:52,799 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 2 more)] === [2025-02-06 04:31:52,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:52,800 INFO L85 PathProgramCache]: Analyzing trace with hash -516646335, now seen corresponding path program 1 times [2025-02-06 04:31:52,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:52,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425382287] [2025-02-06 04:31:52,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:52,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:52,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:31:52,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:31:52,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:52,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:53,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:53,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425382287] [2025-02-06 04:31:53,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425382287] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:31:53,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878196970] [2025-02-06 04:31:53,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:53,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:53,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:53,204 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 04:31:53,206 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 04:31:53,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:31:53,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:31:53,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:53,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:53,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:31:53,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:31:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:54,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:31:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:55,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878196970] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:31:55,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:31:55,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2025-02-06 04:31:55,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722876092] [2025-02-06 04:31:55,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:31:55,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 04:31:55,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:31:55,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 04:31:55,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2025-02-06 04:31:55,449 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 04:31:55,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 401 flow. Second operand has 16 states, 16 states have (on average 12.5) internal successors, (200), 16 states have internal predecessors, (200), 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 04:31:55,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:31:55,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 04:31:55,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:31:57,908 INFO L124 PetriNetUnfolderBase]: 2703/3713 cut-off events. [2025-02-06 04:31:57,909 INFO L125 PetriNetUnfolderBase]: For 13335/13335 co-relation queries the response was YES. [2025-02-06 04:31:57,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18376 conditions, 3713 events. 2703/3713 cut-off events. For 13335/13335 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 16632 event pairs, 265 based on Foata normal form. 15/3713 useless extension candidates. Maximal degree in co-relation 16271. Up to 2092 conditions per place. [2025-02-06 04:31:57,927 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 179 selfloop transitions, 100 changer transitions 20/304 dead transitions. [2025-02-06 04:31:57,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 304 transitions, 2734 flow [2025-02-06 04:31:57,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 04:31:57,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-06 04:31:57,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 345 transitions. [2025-02-06 04:31:57,929 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.673828125 [2025-02-06 04:31:57,929 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 401 flow. Second operand 16 states and 345 transitions. [2025-02-06 04:31:57,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 304 transitions, 2734 flow [2025-02-06 04:31:57,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 304 transitions, 2645 flow, removed 32 selfloop flow, removed 1 redundant places. [2025-02-06 04:31:57,945 INFO L231 Difference]: Finished difference. Result has 94 places, 153 transitions, 1636 flow [2025-02-06 04:31:57,945 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1636, PETRI_PLACES=94, PETRI_TRANSITIONS=153} [2025-02-06 04:31:57,945 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 58 predicate places. [2025-02-06 04:31:57,945 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 153 transitions, 1636 flow [2025-02-06 04:31:57,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.5) internal successors, (200), 16 states have internal predecessors, (200), 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 04:31:57,946 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:31:57,946 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] [2025-02-06 04:31:57,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 04:31:58,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-06 04:31:58,150 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 2 more)] === [2025-02-06 04:31:58,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:31:58,151 INFO L85 PathProgramCache]: Analyzing trace with hash -99204512, now seen corresponding path program 1 times [2025-02-06 04:31:58,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:31:58,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287484626] [2025-02-06 04:31:58,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:58,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:31:58,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:31:58,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:31:58,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:58,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:31:58,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:31:58,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287484626] [2025-02-06 04:31:58,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287484626] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:31:58,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732687927] [2025-02-06 04:31:58,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:31:58,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:31:58,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:31:58,540 INFO L229 MonitoredProcess]: Starting monitored process 7 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 04:31:58,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 04:31:58,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:31:58,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:31:58,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:31:58,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:31:58,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:31:58,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:06,742 WARN L286 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 32 DAG size of output: 30 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-02-06 04:33:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:33:23,107 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:28,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:33:28,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732687927] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:33:28,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:33:28,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2025-02-06 04:33:28,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006918158] [2025-02-06 04:33:28,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:33:28,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 04:33:28,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:28,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 04:33:28,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=168, Unknown=2, NotChecked=0, Total=240 [2025-02-06 04:33:28,045 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-06 04:33:28,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 153 transitions, 1636 flow. Second operand has 16 states, 16 states have (on average 12.4375) internal successors, (199), 16 states have internal predecessors, (199), 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 04:33:28,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:28,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-06 04:33:28,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:30,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []