./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 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/test-easy1.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 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:49:07,448 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:49:07,509 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:49:07,513 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:49:07,514 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:49:07,539 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:49:07,540 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:49:07,540 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:49:07,540 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:49:07,541 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:49:07,541 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:49:07,541 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:49:07,542 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:49:07,542 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:49:07,542 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:49:07,543 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:49:07,543 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:49:07,543 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:49:07,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:49:07,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:49:07,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:49:07,543 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:49:07,543 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:49:07,544 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:49:07,544 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:49:07,544 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:49:07,544 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:49:07,544 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:49:07,544 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:49:07,544 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:49:07,544 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:49:07,545 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:49:07,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:49:07,545 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:49:07,545 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:49:07,546 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:49:07,546 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:49:07,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:49:07,546 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:49:07,546 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:49:07,546 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:49:07,546 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:49:07,546 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:49:07,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:49:07,547 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:49:07,547 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:49:07,547 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:49:07,547 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:49:07,547 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 -> 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d [2025-01-09 16:49:07,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:49:07,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:49:07,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:49:07,809 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:49:07,809 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:49:07,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy1.wvr.c [2025-01-09 16:49:09,038 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/df7f3a40f/9b16cfa39c924b748f95d127bc349075/FLAGe4cce673c [2025-01-09 16:49:09,282 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:49:09,282 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/test-easy1.wvr.c [2025-01-09 16:49:09,287 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/df7f3a40f/9b16cfa39c924b748f95d127bc349075/FLAGe4cce673c [2025-01-09 16:49:09,300 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/df7f3a40f/9b16cfa39c924b748f95d127bc349075 [2025-01-09 16:49:09,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:49:09,303 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:49:09,304 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:49:09,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:49:09,307 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:49:09,308 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:49:09" (1/1) ... [2025-01-09 16:49:09,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63795ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:49:09, skipping insertion in model container [2025-01-09 16:49:09,309 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:49:09" (1/1) ... [2025-01-09 16:49:09,323 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:49:09,468 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/test-easy1.wvr.c[1902,1915] [2025-01-09 16:49:09,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:49:09,484 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:49:09,499 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/test-easy1.wvr.c[1902,1915] [2025-01-09 16:49:09,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:49:09,513 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:49:09,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:49:09 WrapperNode [2025-01-09 16:49:09,515 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:49:09,516 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:49:09,516 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:49:09,516 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:49:09,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:49:09" (1/1) ... [2025-01-09 16:49:09,528 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:49:09" (1/1) ... [2025-01-09 16:49:09,542 INFO L138 Inliner]: procedures = 20, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45 [2025-01-09 16:49:09,543 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:49:09,544 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:49:09,545 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:49:09,545 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:49:09,552 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:49:09" (1/1) ... [2025-01-09 16:49:09,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:49:09" (1/1) ... [2025-01-09 16:49:09,553 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:49:09" (1/1) ... [2025-01-09 16:49:09,562 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]. [2025-01-09 16:49:09,562 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:49:09" (1/1) ... [2025-01-09 16:49:09,562 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:49:09" (1/1) ... [2025-01-09 16:49:09,565 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:49:09" (1/1) ... [2025-01-09 16:49:09,567 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:49:09" (1/1) ... [2025-01-09 16:49:09,569 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:49:09" (1/1) ... [2025-01-09 16:49:09,569 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:49:09" (1/1) ... [2025-01-09 16:49:09,570 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:49:09" (1/1) ... [2025-01-09 16:49:09,571 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:49:09,572 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:49:09,572 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:49:09,572 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:49:09,573 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:49:09" (1/1) ... [2025-01-09 16:49:09,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:49:09,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:09,597 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) [2025-01-09 16:49:09,600 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 [2025-01-09 16:49:09,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:49:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-09 16:49:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-09 16:49:09,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-09 16:49:09,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-09 16:49:09,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:49:09,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:49:09,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:49:09,619 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 16:49:09,692 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:49:09,694 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:49:09,794 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:49:09,794 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:49:09,882 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:49:09,882 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:49:09,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:49:09 BoogieIcfgContainer [2025-01-09 16:49:09,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:49:09,884 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:49:09,884 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:49:09,887 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:49:09,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:49:09" (1/3) ... [2025-01-09 16:49:09,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4157443b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:49:09, skipping insertion in model container [2025-01-09 16:49:09,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:49:09" (2/3) ... [2025-01-09 16:49:09,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4157443b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:49:09, skipping insertion in model container [2025-01-09 16:49:09,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:49:09" (3/3) ... [2025-01-09 16:49:09,889 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2025-01-09 16:49:09,898 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:49:09,900 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy1.wvr.c that has 3 procedures, 17 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-01-09 16:49:09,900 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:49:09,929 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-09 16:49:09,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 50 flow [2025-01-09 16:49:09,986 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2025-01-09 16:49:09,988 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-09 16:49:09,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2025-01-09 16:49:09,991 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 50 flow [2025-01-09 16:49:09,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2025-01-09 16:49:09,999 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:49:10,011 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;@a256d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:49:10,011 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-01-09 16:49:10,023 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:49:10,023 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2025-01-09 16:49:10,023 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-09 16:49:10,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:10,024 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:10,025 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:10,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:10,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1873145374, now seen corresponding path program 1 times [2025-01-09 16:49:10,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:10,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010641466] [2025-01-09 16:49:10,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:49:10,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:10,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-09 16:49:10,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-09 16:49:10,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:49:10,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:10,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:10,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:10,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010641466] [2025-01-09 16:49:10,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010641466] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:49:10,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:49:10,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:49:10,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619309606] [2025-01-09 16:49:10,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:49:10,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:49:10,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:10,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:49:10,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:49:10,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:10,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2025-01-09 16:49:10,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:10,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:10,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:10,402 INFO L124 PetriNetUnfolderBase]: 59/104 cut-off events. [2025-01-09 16:49:10,402 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-01-09 16:49:10,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 104 events. 59/104 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 279 event pairs, 8 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 179. Up to 77 conditions per place. [2025-01-09 16:49:10,406 INFO L140 encePairwiseOnDemand]: 14/18 looper letters, 17 selfloop transitions, 3 changer transitions 1/24 dead transitions. [2025-01-09 16:49:10,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 111 flow [2025-01-09 16:49:10,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:49:10,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:49:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2025-01-09 16:49:10,419 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2025-01-09 16:49:10,422 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 37 transitions. [2025-01-09 16:49:10,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 111 flow [2025-01-09 16:49:10,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-09 16:49:10,431 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2025-01-09 16:49:10,433 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2025-01-09 16:49:10,436 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2025-01-09 16:49:10,436 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2025-01-09 16:49:10,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2025-01-09 16:49:10,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:10,436 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:10,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:49:10,437 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:10,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:10,438 INFO L85 PathProgramCache]: Analyzing trace with hash -2061297683, now seen corresponding path program 1 times [2025-01-09 16:49:10,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:10,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411817220] [2025-01-09 16:49:10,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:49:10,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:10,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 16:49:10,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:49:10,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:49:10,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:10,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:10,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411817220] [2025-01-09 16:49:10,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411817220] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:49:10,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:49:10,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:49:10,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315130977] [2025-01-09 16:49:10,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:49:10,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:49:10,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:10,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:49:10,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:49:10,538 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:10,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-01-09 16:49:10,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:10,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:10,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:10,690 INFO L124 PetriNetUnfolderBase]: 60/115 cut-off events. [2025-01-09 16:49:10,690 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-01-09 16:49:10,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 115 events. 60/115 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 327 event pairs, 6 based on Foata normal form. 6/119 useless extension candidates. Maximal degree in co-relation 79. Up to 46 conditions per place. [2025-01-09 16:49:10,692 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 26 selfloop transitions, 7 changer transitions 2/38 dead transitions. [2025-01-09 16:49:10,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 38 transitions, 183 flow [2025-01-09 16:49:10,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:49:10,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:49:10,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2025-01-09 16:49:10,693 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2025-01-09 16:49:10,693 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 5 states and 58 transitions. [2025-01-09 16:49:10,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 38 transitions, 183 flow [2025-01-09 16:49:10,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 38 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:49:10,695 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 106 flow [2025-01-09 16:49:10,695 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2025-01-09 16:49:10,696 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 5 predicate places. [2025-01-09 16:49:10,696 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 106 flow [2025-01-09 16:49:10,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-01-09 16:49:10,696 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:10,696 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:10,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 16:49:10,697 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:10,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:10,697 INFO L85 PathProgramCache]: Analyzing trace with hash -2074445000, now seen corresponding path program 1 times [2025-01-09 16:49:10,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:10,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289719456] [2025-01-09 16:49:10,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:49:10,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:10,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 16:49:10,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:49:10,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:49:10,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:10,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:10,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289719456] [2025-01-09 16:49:10,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289719456] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:10,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351279632] [2025-01-09 16:49:10,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:49:10,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:10,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:10,806 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) [2025-01-09 16:49:10,807 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 [2025-01-09 16:49:10,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 16:49:10,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:49:10,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:49:10,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:10,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 16:49:10,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:10,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:10,940 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:10,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351279632] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:10,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:49:10,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2025-01-09 16:49:10,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032858439] [2025-01-09 16:49:10,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:49:10,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:49:10,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:10,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:49:10,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:49:10,993 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:10,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-01-09 16:49:10,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:10,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:10,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:11,070 INFO L124 PetriNetUnfolderBase]: 61/134 cut-off events. [2025-01-09 16:49:11,070 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2025-01-09 16:49:11,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 134 events. 61/134 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 451 event pairs, 10 based on Foata normal form. 5/136 useless extension candidates. Maximal degree in co-relation 290. Up to 52 conditions per place. [2025-01-09 16:49:11,074 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 28 selfloop transitions, 8 changer transitions 2/41 dead transitions. [2025-01-09 16:49:11,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 41 transitions, 256 flow [2025-01-09 16:49:11,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:49:11,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:49:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2025-01-09 16:49:11,076 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2025-01-09 16:49:11,077 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 106 flow. Second operand 4 states and 50 transitions. [2025-01-09 16:49:11,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 41 transitions, 256 flow [2025-01-09 16:49:11,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 41 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-09 16:49:11,079 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 153 flow [2025-01-09 16:49:11,079 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2025-01-09 16:49:11,082 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 10 predicate places. [2025-01-09 16:49:11,082 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 153 flow [2025-01-09 16:49:11,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-01-09 16:49:11,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:11,082 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:11,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 16:49:11,282 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 [2025-01-09 16:49:11,283 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:11,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1301509978, now seen corresponding path program 2 times [2025-01-09 16:49:11,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:11,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339744356] [2025-01-09 16:49:11,284 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:49:11,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:11,290 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-09 16:49:11,310 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:49:11,310 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:49:11,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:11,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:11,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:11,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339744356] [2025-01-09 16:49:11,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339744356] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:49:11,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:49:11,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 16:49:11,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073439732] [2025-01-09 16:49:11,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:49:11,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:49:11,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:11,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:49:11,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:49:11,389 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:11,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-01-09 16:49:11,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:11,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:11,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:11,482 INFO L124 PetriNetUnfolderBase]: 51/111 cut-off events. [2025-01-09 16:49:11,482 INFO L125 PetriNetUnfolderBase]: For 238/241 co-relation queries the response was YES. [2025-01-09 16:49:11,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 111 events. 51/111 cut-off events. For 238/241 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 316 event pairs, 5 based on Foata normal form. 2/110 useless extension candidates. Maximal degree in co-relation 276. Up to 39 conditions per place. [2025-01-09 16:49:11,483 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 28 selfloop transitions, 7 changer transitions 2/40 dead transitions. [2025-01-09 16:49:11,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 291 flow [2025-01-09 16:49:11,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:49:11,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:49:11,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2025-01-09 16:49:11,484 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2025-01-09 16:49:11,485 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 153 flow. Second operand 5 states and 55 transitions. [2025-01-09 16:49:11,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 291 flow [2025-01-09 16:49:11,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 287 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-01-09 16:49:11,487 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 172 flow [2025-01-09 16:49:11,487 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2025-01-09 16:49:11,488 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 15 predicate places. [2025-01-09 16:49:11,488 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 172 flow [2025-01-09 16:49:11,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-01-09 16:49:11,488 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:11,488 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:11,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 16:49:11,488 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:11,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:11,489 INFO L85 PathProgramCache]: Analyzing trace with hash 106173853, now seen corresponding path program 2 times [2025-01-09 16:49:11,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:11,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29459958] [2025-01-09 16:49:11,489 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:49:11,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:11,494 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-09 16:49:11,499 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:49:11,501 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:49:11,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:11,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:11,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29459958] [2025-01-09 16:49:11,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29459958] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:11,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854595105] [2025-01-09 16:49:11,547 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:49:11,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:11,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:11,551 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) [2025-01-09 16:49:11,553 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 [2025-01-09 16:49:11,588 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-09 16:49:11,603 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:49:11,603 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:49:11,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:11,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 16:49:11,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:11,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:11,657 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:11,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854595105] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:11,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:49:11,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2025-01-09 16:49:11,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967325842] [2025-01-09 16:49:11,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:49:11,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:49:11,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:11,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:49:11,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:49:11,707 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:11,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-01-09 16:49:11,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:11,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:11,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:11,785 INFO L124 PetriNetUnfolderBase]: 43/93 cut-off events. [2025-01-09 16:49:11,786 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2025-01-09 16:49:11,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 93 events. 43/93 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 218 event pairs, 4 based on Foata normal form. 4/96 useless extension candidates. Maximal degree in co-relation 233. Up to 57 conditions per place. [2025-01-09 16:49:11,787 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 24 selfloop transitions, 7 changer transitions 0/34 dead transitions. [2025-01-09 16:49:11,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 263 flow [2025-01-09 16:49:11,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 16:49:11,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-09 16:49:11,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 46 transitions. [2025-01-09 16:49:11,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2025-01-09 16:49:11,791 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 172 flow. Second operand 4 states and 46 transitions. [2025-01-09 16:49:11,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 263 flow [2025-01-09 16:49:11,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 241 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-01-09 16:49:11,793 INFO L231 Difference]: Finished difference. Result has 37 places, 25 transitions, 169 flow [2025-01-09 16:49:11,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=37, PETRI_TRANSITIONS=25} [2025-01-09 16:49:11,794 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 17 predicate places. [2025-01-09 16:49:11,794 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 169 flow [2025-01-09 16:49:11,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2025-01-09 16:49:11,794 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:11,794 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:11,802 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 [2025-01-09 16:49:11,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:11,995 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:11,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:11,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1098216941, now seen corresponding path program 1 times [2025-01-09 16:49:11,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:11,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547737534] [2025-01-09 16:49:11,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:49:11,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:12,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 16:49:12,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:49:12,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:49:12,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:12,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:12,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547737534] [2025-01-09 16:49:12,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547737534] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:12,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162855988] [2025-01-09 16:49:12,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:49:12,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:12,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:12,116 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) [2025-01-09 16:49:12,118 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 [2025-01-09 16:49:12,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 16:49:12,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:49:12,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:49:12,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:12,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:49:12,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:12,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:12,290 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:12,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162855988] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:12,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:12,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-01-09 16:49:12,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811823265] [2025-01-09 16:49:12,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:12,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 16:49:12,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:12,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 16:49:12,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2025-01-09 16:49:12,423 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:12,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 25 transitions, 169 flow. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 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) [2025-01-09 16:49:12,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:12,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:12,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:12,580 INFO L124 PetriNetUnfolderBase]: 98/193 cut-off events. [2025-01-09 16:49:12,580 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2025-01-09 16:49:12,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 193 events. 98/193 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 646 event pairs, 1 based on Foata normal form. 17/209 useless extension candidates. Maximal degree in co-relation 274. Up to 76 conditions per place. [2025-01-09 16:49:12,583 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 38 selfloop transitions, 19 changer transitions 8/68 dead transitions. [2025-01-09 16:49:12,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 68 transitions, 551 flow [2025-01-09 16:49:12,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:49:12,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:49:12,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2025-01-09 16:49:12,584 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2025-01-09 16:49:12,584 INFO L175 Difference]: Start difference. First operand has 37 places, 25 transitions, 169 flow. Second operand 9 states and 102 transitions. [2025-01-09 16:49:12,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 68 transitions, 551 flow [2025-01-09 16:49:12,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 504 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-01-09 16:49:12,588 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 346 flow [2025-01-09 16:49:12,588 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=346, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2025-01-09 16:49:12,588 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 28 predicate places. [2025-01-09 16:49:12,588 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 346 flow [2025-01-09 16:49:12,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 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) [2025-01-09 16:49:12,589 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:12,589 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:12,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 16:49:12,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:12,793 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:12,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:12,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1827275679, now seen corresponding path program 2 times [2025-01-09 16:49:12,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:12,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737978825] [2025-01-09 16:49:12,794 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:49:12,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:12,798 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:49:12,814 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:49:12,814 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:49:12,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:12,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:12,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:12,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737978825] [2025-01-09 16:49:12,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737978825] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:12,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273622490] [2025-01-09 16:49:12,908 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:49:12,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:12,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:12,913 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) [2025-01-09 16:49:12,915 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 [2025-01-09 16:49:12,949 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:49:12,963 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:49:12,964 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:49:12,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:12,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 16:49:12,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:13,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:13,058 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:13,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273622490] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:13,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:13,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 3] total 10 [2025-01-09 16:49:13,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024606736] [2025-01-09 16:49:13,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:13,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 16:49:13,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:13,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 16:49:13,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2025-01-09 16:49:13,090 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:13,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 346 flow. Second operand has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 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) [2025-01-09 16:49:13,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:13,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:13,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:13,290 INFO L124 PetriNetUnfolderBase]: 151/283 cut-off events. [2025-01-09 16:49:13,290 INFO L125 PetriNetUnfolderBase]: For 1245/1245 co-relation queries the response was YES. [2025-01-09 16:49:13,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1470 conditions, 283 events. 151/283 cut-off events. For 1245/1245 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1033 event pairs, 3 based on Foata normal form. 6/288 useless extension candidates. Maximal degree in co-relation 1361. Up to 101 conditions per place. [2025-01-09 16:49:13,293 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 42 selfloop transitions, 42 changer transitions 2/89 dead transitions. [2025-01-09 16:49:13,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 89 transitions, 880 flow [2025-01-09 16:49:13,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 16:49:13,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-09 16:49:13,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2025-01-09 16:49:13,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2025-01-09 16:49:13,294 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 346 flow. Second operand 11 states and 114 transitions. [2025-01-09 16:49:13,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 89 transitions, 880 flow [2025-01-09 16:49:13,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 805 flow, removed 36 selfloop flow, removed 2 redundant places. [2025-01-09 16:49:13,303 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 703 flow [2025-01-09 16:49:13,303 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=703, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2025-01-09 16:49:13,304 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 40 predicate places. [2025-01-09 16:49:13,304 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 703 flow [2025-01-09 16:49:13,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 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) [2025-01-09 16:49:13,304 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:13,304 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:13,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 16:49:13,504 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,SelfDestructingSolverStorable6 [2025-01-09 16:49:13,505 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:13,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:13,505 INFO L85 PathProgramCache]: Analyzing trace with hash -653207912, now seen corresponding path program 3 times [2025-01-09 16:49:13,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:13,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079187570] [2025-01-09 16:49:13,505 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:49:13,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:13,510 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-01-09 16:49:13,514 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 16:49:13,514 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:49:13,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:13,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:13,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:13,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079187570] [2025-01-09 16:49:13,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079187570] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:13,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727009341] [2025-01-09 16:49:13,564 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:49:13,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:13,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:13,566 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) [2025-01-09 16:49:13,568 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 [2025-01-09 16:49:13,597 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-01-09 16:49:13,610 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 16:49:13,610 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:49:13,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:13,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 16:49:13,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:13,659 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:13,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727009341] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:13,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:13,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-01-09 16:49:13,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311551210] [2025-01-09 16:49:13,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:13,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:49:13,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:13,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:49:13,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:49:13,709 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:13,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 703 flow. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 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) [2025-01-09 16:49:13,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:13,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:13,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:13,870 INFO L124 PetriNetUnfolderBase]: 169/334 cut-off events. [2025-01-09 16:49:13,870 INFO L125 PetriNetUnfolderBase]: For 2622/2622 co-relation queries the response was YES. [2025-01-09 16:49:13,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1952 conditions, 334 events. 169/334 cut-off events. For 2622/2622 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1357 event pairs, 3 based on Foata normal form. 15/348 useless extension candidates. Maximal degree in co-relation 1799. Up to 105 conditions per place. [2025-01-09 16:49:13,873 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 61 selfloop transitions, 33 changer transitions 19/116 dead transitions. [2025-01-09 16:49:13,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 116 transitions, 1439 flow [2025-01-09 16:49:13,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:49:13,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:49:13,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2025-01-09 16:49:13,875 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5987654320987654 [2025-01-09 16:49:13,875 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 703 flow. Second operand 9 states and 97 transitions. [2025-01-09 16:49:13,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 116 transitions, 1439 flow [2025-01-09 16:49:13,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 116 transitions, 1232 flow, removed 100 selfloop flow, removed 3 redundant places. [2025-01-09 16:49:13,890 INFO L231 Difference]: Finished difference. Result has 70 places, 75 transitions, 844 flow [2025-01-09 16:49:13,890 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=844, PETRI_PLACES=70, PETRI_TRANSITIONS=75} [2025-01-09 16:49:13,893 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 50 predicate places. [2025-01-09 16:49:13,893 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 75 transitions, 844 flow [2025-01-09 16:49:13,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 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) [2025-01-09 16:49:13,893 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:13,893 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:13,901 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 [2025-01-09 16:49:14,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:14,098 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:14,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:14,099 INFO L85 PathProgramCache]: Analyzing trace with hash -148529858, now seen corresponding path program 4 times [2025-01-09 16:49:14,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:14,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311354543] [2025-01-09 16:49:14,099 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:49:14,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:14,103 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-01-09 16:49:14,106 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 16:49:14,106 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:49:14,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:14,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:49:14,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:14,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311354543] [2025-01-09 16:49:14,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311354543] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:14,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777820761] [2025-01-09 16:49:14,155 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:49:14,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:14,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:14,157 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) [2025-01-09 16:49:14,159 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 [2025-01-09 16:49:14,185 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-01-09 16:49:14,196 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 16:49:14,196 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:49:14,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:14,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 16:49:14,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:14,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:14,259 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:14,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777820761] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:14,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:14,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2025-01-09 16:49:14,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859543143] [2025-01-09 16:49:14,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:14,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 16:49:14,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:14,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 16:49:14,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2025-01-09 16:49:14,314 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:14,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 75 transitions, 844 flow. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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) [2025-01-09 16:49:14,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:14,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:14,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:14,460 INFO L124 PetriNetUnfolderBase]: 146/284 cut-off events. [2025-01-09 16:49:14,461 INFO L125 PetriNetUnfolderBase]: For 1548/1548 co-relation queries the response was YES. [2025-01-09 16:49:14,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 284 events. 146/284 cut-off events. For 1548/1548 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1061 event pairs, 4 based on Foata normal form. 6/289 useless extension candidates. Maximal degree in co-relation 1440. Up to 132 conditions per place. [2025-01-09 16:49:14,465 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 64 selfloop transitions, 33 changer transitions 2/102 dead transitions. [2025-01-09 16:49:14,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 102 transitions, 1188 flow [2025-01-09 16:49:14,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 16:49:14,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-09 16:49:14,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2025-01-09 16:49:14,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2025-01-09 16:49:14,467 INFO L175 Difference]: Start difference. First operand has 70 places, 75 transitions, 844 flow. Second operand 10 states and 94 transitions. [2025-01-09 16:49:14,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 102 transitions, 1188 flow [2025-01-09 16:49:14,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 1124 flow, removed 28 selfloop flow, removed 2 redundant places. [2025-01-09 16:49:14,482 INFO L231 Difference]: Finished difference. Result has 81 places, 80 transitions, 923 flow [2025-01-09 16:49:14,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=923, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2025-01-09 16:49:14,483 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 61 predicate places. [2025-01-09 16:49:14,483 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 923 flow [2025-01-09 16:49:14,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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) [2025-01-09 16:49:14,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:14,485 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:14,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 16:49:14,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-01-09 16:49:14,686 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:14,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:14,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1302392424, now seen corresponding path program 5 times [2025-01-09 16:49:14,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:14,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324095140] [2025-01-09 16:49:14,687 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:49:14,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:14,691 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-09 16:49:14,694 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 16:49:14,694 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:49:14,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:14,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:14,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324095140] [2025-01-09 16:49:14,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324095140] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:14,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673270659] [2025-01-09 16:49:14,747 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:49:14,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:14,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:14,749 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:49:14,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 16:49:14,779 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-09 16:49:14,791 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 16:49:14,791 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:49:14,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:14,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 16:49:14,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:14,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:14,849 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:14,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673270659] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:14,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:14,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-01-09 16:49:14,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748904888] [2025-01-09 16:49:14,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:14,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 16:49:14,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:14,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 16:49:14,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-01-09 16:49:14,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:14,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 923 flow. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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) [2025-01-09 16:49:14,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:14,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:14,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:15,105 INFO L124 PetriNetUnfolderBase]: 159/309 cut-off events. [2025-01-09 16:49:15,105 INFO L125 PetriNetUnfolderBase]: For 1772/1772 co-relation queries the response was YES. [2025-01-09 16:49:15,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1751 conditions, 309 events. 159/309 cut-off events. For 1772/1772 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1189 event pairs, 4 based on Foata normal form. 2/310 useless extension candidates. Maximal degree in co-relation 1602. Up to 168 conditions per place. [2025-01-09 16:49:15,108 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 64 selfloop transitions, 45 changer transitions 0/112 dead transitions. [2025-01-09 16:49:15,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 112 transitions, 1355 flow [2025-01-09 16:49:15,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 16:49:15,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-01-09 16:49:15,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2025-01-09 16:49:15,109 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2025-01-09 16:49:15,109 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 923 flow. Second operand 12 states and 113 transitions. [2025-01-09 16:49:15,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 112 transitions, 1355 flow [2025-01-09 16:49:15,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 112 transitions, 1272 flow, removed 26 selfloop flow, removed 4 redundant places. [2025-01-09 16:49:15,121 INFO L231 Difference]: Finished difference. Result has 92 places, 92 transitions, 1114 flow [2025-01-09 16:49:15,122 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1114, PETRI_PLACES=92, PETRI_TRANSITIONS=92} [2025-01-09 16:49:15,122 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 72 predicate places. [2025-01-09 16:49:15,122 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 92 transitions, 1114 flow [2025-01-09 16:49:15,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 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) [2025-01-09 16:49:15,122 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:15,122 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:15,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 16:49:15,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:15,327 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:15,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:15,327 INFO L85 PathProgramCache]: Analyzing trace with hash -396204643, now seen corresponding path program 6 times [2025-01-09 16:49:15,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:15,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372662467] [2025-01-09 16:49:15,328 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:49:15,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:15,332 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-01-09 16:49:15,335 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 16:49:15,335 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:49:15,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:15,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:15,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372662467] [2025-01-09 16:49:15,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372662467] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:15,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648242387] [2025-01-09 16:49:15,376 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:49:15,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:15,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:15,378 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:49:15,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 16:49:15,410 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-01-09 16:49:15,421 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 16:49:15,421 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:49:15,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:15,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 16:49:15,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:15,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:15,460 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:15,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:15,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648242387] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:15,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:15,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-01-09 16:49:15,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778742252] [2025-01-09 16:49:15,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:15,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:49:15,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:15,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:49:15,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:49:15,504 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:15,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 1114 flow. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 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) [2025-01-09 16:49:15,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:15,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:15,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:15,655 INFO L124 PetriNetUnfolderBase]: 158/328 cut-off events. [2025-01-09 16:49:15,655 INFO L125 PetriNetUnfolderBase]: For 2210/2210 co-relation queries the response was YES. [2025-01-09 16:49:15,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1957 conditions, 328 events. 158/328 cut-off events. For 2210/2210 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1359 event pairs, 8 based on Foata normal form. 8/335 useless extension candidates. Maximal degree in co-relation 1812. Up to 107 conditions per place. [2025-01-09 16:49:15,659 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 72 selfloop transitions, 33 changer transitions 10/118 dead transitions. [2025-01-09 16:49:15,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 118 transitions, 1543 flow [2025-01-09 16:49:15,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:49:15,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:49:15,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2025-01-09 16:49:15,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5679012345679012 [2025-01-09 16:49:15,660 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 1114 flow. Second operand 9 states and 92 transitions. [2025-01-09 16:49:15,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 118 transitions, 1543 flow [2025-01-09 16:49:15,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 118 transitions, 1429 flow, removed 14 selfloop flow, removed 5 redundant places. [2025-01-09 16:49:15,676 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 1117 flow [2025-01-09 16:49:15,676 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1117, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2025-01-09 16:49:15,677 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 78 predicate places. [2025-01-09 16:49:15,678 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 1117 flow [2025-01-09 16:49:15,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 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) [2025-01-09 16:49:15,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:15,678 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:15,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 16:49:15,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:15,879 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:15,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:15,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1749387304, now seen corresponding path program 7 times [2025-01-09 16:49:15,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:15,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116523541] [2025-01-09 16:49:15,880 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:49:15,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:15,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 16:49:15,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 16:49:15,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:49:15,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:15,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:15,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:15,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116523541] [2025-01-09 16:49:15,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116523541] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:15,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457249247] [2025-01-09 16:49:15,984 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:49:15,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:15,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:15,988 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:49:15,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 16:49:16,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 16:49:16,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 16:49:16,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:49:16,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:16,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 16:49:16,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:16,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:16,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:16,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457249247] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:16,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:16,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-01-09 16:49:16,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392849152] [2025-01-09 16:49:16,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:16,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 16:49:16,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:16,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 16:49:16,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2025-01-09 16:49:16,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:16,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 1117 flow. Second operand has 19 states, 19 states have (on average 7.105263157894737) internal successors, (135), 19 states have internal predecessors, (135), 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) [2025-01-09 16:49:16,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:16,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:16,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:16,634 INFO L124 PetriNetUnfolderBase]: 222/445 cut-off events. [2025-01-09 16:49:16,634 INFO L125 PetriNetUnfolderBase]: For 2553/2553 co-relation queries the response was YES. [2025-01-09 16:49:16,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2667 conditions, 445 events. 222/445 cut-off events. For 2553/2553 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1957 event pairs, 0 based on Foata normal form. 16/460 useless extension candidates. Maximal degree in co-relation 2540. Up to 190 conditions per place. [2025-01-09 16:49:16,639 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 101 selfloop transitions, 60 changer transitions 8/172 dead transitions. [2025-01-09 16:49:16,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 172 transitions, 2152 flow [2025-01-09 16:49:16,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-09 16:49:16,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-01-09 16:49:16,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 190 transitions. [2025-01-09 16:49:16,640 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-01-09 16:49:16,640 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 1117 flow. Second operand 19 states and 190 transitions. [2025-01-09 16:49:16,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 172 transitions, 2152 flow [2025-01-09 16:49:16,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 172 transitions, 2054 flow, removed 18 selfloop flow, removed 5 redundant places. [2025-01-09 16:49:16,657 INFO L231 Difference]: Finished difference. Result has 120 places, 131 transitions, 1798 flow [2025-01-09 16:49:16,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1798, PETRI_PLACES=120, PETRI_TRANSITIONS=131} [2025-01-09 16:49:16,658 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 100 predicate places. [2025-01-09 16:49:16,658 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 131 transitions, 1798 flow [2025-01-09 16:49:16,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.105263157894737) internal successors, (135), 19 states have internal predecessors, (135), 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) [2025-01-09 16:49:16,658 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:16,658 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:16,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-09 16:49:16,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:16,859 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:16,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:16,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1984288992, now seen corresponding path program 8 times [2025-01-09 16:49:16,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:16,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660154295] [2025-01-09 16:49:16,860 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:49:16,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:16,864 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-01-09 16:49:16,871 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 16:49:16,871 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:49:16,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:16,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:16,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660154295] [2025-01-09 16:49:16,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660154295] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:16,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748895817] [2025-01-09 16:49:16,972 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:49:16,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:16,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:16,974 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:49:16,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 16:49:17,002 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-01-09 16:49:17,012 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 16:49:17,012 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:49:17,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:17,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 16:49:17,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:17,106 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:17,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:17,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748895817] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:17,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:17,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 4] total 14 [2025-01-09 16:49:17,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840234095] [2025-01-09 16:49:17,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:17,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 16:49:17,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:17,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 16:49:17,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2025-01-09 16:49:17,145 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:17,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 131 transitions, 1798 flow. Second operand has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 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) [2025-01-09 16:49:17,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:17,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:17,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:17,467 INFO L124 PetriNetUnfolderBase]: 341/676 cut-off events. [2025-01-09 16:49:17,467 INFO L125 PetriNetUnfolderBase]: For 5730/5730 co-relation queries the response was YES. [2025-01-09 16:49:17,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4510 conditions, 676 events. 341/676 cut-off events. For 5730/5730 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3368 event pairs, 4 based on Foata normal form. 34/709 useless extension candidates. Maximal degree in co-relation 4391. Up to 194 conditions per place. [2025-01-09 16:49:17,475 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 111 selfloop transitions, 99 changer transitions 31/244 dead transitions. [2025-01-09 16:49:17,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 244 transitions, 3551 flow [2025-01-09 16:49:17,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 16:49:17,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-01-09 16:49:17,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 209 transitions. [2025-01-09 16:49:17,477 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5805555555555556 [2025-01-09 16:49:17,477 INFO L175 Difference]: Start difference. First operand has 120 places, 131 transitions, 1798 flow. Second operand 20 states and 209 transitions. [2025-01-09 16:49:17,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 244 transitions, 3551 flow [2025-01-09 16:49:17,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 244 transitions, 3257 flow, removed 107 selfloop flow, removed 5 redundant places. [2025-01-09 16:49:17,515 INFO L231 Difference]: Finished difference. Result has 150 places, 170 transitions, 2492 flow [2025-01-09 16:49:17,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2492, PETRI_PLACES=150, PETRI_TRANSITIONS=170} [2025-01-09 16:49:17,516 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 130 predicate places. [2025-01-09 16:49:17,516 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 170 transitions, 2492 flow [2025-01-09 16:49:17,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 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) [2025-01-09 16:49:17,516 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:17,516 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:17,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-09 16:49:17,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-09 16:49:17,721 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:17,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:17,722 INFO L85 PathProgramCache]: Analyzing trace with hash 897849534, now seen corresponding path program 9 times [2025-01-09 16:49:17,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:17,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909019783] [2025-01-09 16:49:17,722 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:49:17,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:17,725 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-01-09 16:49:17,729 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 16:49:17,729 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:49:17,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:17,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:17,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909019783] [2025-01-09 16:49:17,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909019783] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:17,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384130281] [2025-01-09 16:49:17,819 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:49:17,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:17,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:17,822 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:49:17,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 16:49:17,874 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 2 equivalence classes. [2025-01-09 16:49:17,885 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 16:49:17,885 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:49:17,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:17,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 16:49:17,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:17,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:17,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:18,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:18,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384130281] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:18,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:18,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 4] total 15 [2025-01-09 16:49:18,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484762501] [2025-01-09 16:49:18,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:18,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 16:49:18,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:18,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 16:49:18,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2025-01-09 16:49:18,010 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:18,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 170 transitions, 2492 flow. Second operand has 16 states, 16 states have (on average 7.4375) internal successors, (119), 16 states have internal predecessors, (119), 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) [2025-01-09 16:49:18,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:18,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:18,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:18,278 INFO L124 PetriNetUnfolderBase]: 402/786 cut-off events. [2025-01-09 16:49:18,278 INFO L125 PetriNetUnfolderBase]: For 13283/13283 co-relation queries the response was YES. [2025-01-09 16:49:18,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5920 conditions, 786 events. 402/786 cut-off events. For 13283/13283 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4006 event pairs, 24 based on Foata normal form. 18/803 useless extension candidates. Maximal degree in co-relation 5736. Up to 510 conditions per place. [2025-01-09 16:49:18,290 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 174 selfloop transitions, 63 changer transitions 3/243 dead transitions. [2025-01-09 16:49:18,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 243 transitions, 4053 flow [2025-01-09 16:49:18,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 16:49:18,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-09 16:49:18,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2025-01-09 16:49:18,291 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2025-01-09 16:49:18,291 INFO L175 Difference]: Start difference. First operand has 150 places, 170 transitions, 2492 flow. Second operand 10 states and 112 transitions. [2025-01-09 16:49:18,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 243 transitions, 4053 flow [2025-01-09 16:49:18,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 243 transitions, 3727 flow, removed 161 selfloop flow, removed 5 redundant places. [2025-01-09 16:49:18,377 INFO L231 Difference]: Finished difference. Result has 154 places, 207 transitions, 3006 flow [2025-01-09 16:49:18,378 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2226, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3006, PETRI_PLACES=154, PETRI_TRANSITIONS=207} [2025-01-09 16:49:18,378 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 134 predicate places. [2025-01-09 16:49:18,378 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 207 transitions, 3006 flow [2025-01-09 16:49:18,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.4375) internal successors, (119), 16 states have internal predecessors, (119), 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) [2025-01-09 16:49:18,379 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:18,379 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:18,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-09 16:49:18,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-09 16:49:18,580 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:18,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:18,581 INFO L85 PathProgramCache]: Analyzing trace with hash 882148937, now seen corresponding path program 10 times [2025-01-09 16:49:18,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:18,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470825912] [2025-01-09 16:49:18,582 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:49:18,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:18,586 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-01-09 16:49:18,591 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:49:18,592 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:49:18,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:18,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:18,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470825912] [2025-01-09 16:49:18,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470825912] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:18,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121910179] [2025-01-09 16:49:18,659 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:49:18,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:18,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:18,661 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:49:18,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 16:49:18,687 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-01-09 16:49:18,698 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:49:18,699 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:49:18,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:18,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:49:18,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:18,755 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:18,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121910179] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:18,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:18,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-01-09 16:49:18,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160208581] [2025-01-09 16:49:18,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:18,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 16:49:18,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:18,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 16:49:18,821 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2025-01-09 16:49:18,821 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:18,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 207 transitions, 3006 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:49:18,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:18,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:18,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:19,118 INFO L124 PetriNetUnfolderBase]: 493/971 cut-off events. [2025-01-09 16:49:19,119 INFO L125 PetriNetUnfolderBase]: For 15286/15286 co-relation queries the response was YES. [2025-01-09 16:49:19,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7234 conditions, 971 events. 493/971 cut-off events. For 15286/15286 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5281 event pairs, 11 based on Foata normal form. 27/997 useless extension candidates. Maximal degree in co-relation 7089. Up to 297 conditions per place. [2025-01-09 16:49:19,131 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 149 selfloop transitions, 127 changer transitions 26/305 dead transitions. [2025-01-09 16:49:19,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 305 transitions, 5031 flow [2025-01-09 16:49:19,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 16:49:19,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-01-09 16:49:19,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2025-01-09 16:49:19,132 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2025-01-09 16:49:19,132 INFO L175 Difference]: Start difference. First operand has 154 places, 207 transitions, 3006 flow. Second operand 12 states and 123 transitions. [2025-01-09 16:49:19,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 305 transitions, 5031 flow [2025-01-09 16:49:19,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 305 transitions, 4839 flow, removed 82 selfloop flow, removed 4 redundant places. [2025-01-09 16:49:19,211 INFO L231 Difference]: Finished difference. Result has 167 places, 249 transitions, 4248 flow [2025-01-09 16:49:19,211 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2868, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4248, PETRI_PLACES=167, PETRI_TRANSITIONS=249} [2025-01-09 16:49:19,212 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 147 predicate places. [2025-01-09 16:49:19,212 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 249 transitions, 4248 flow [2025-01-09 16:49:19,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:49:19,212 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:19,212 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:19,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-09 16:49:19,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:19,413 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:19,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:19,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2140255653, now seen corresponding path program 11 times [2025-01-09 16:49:19,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:19,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319084256] [2025-01-09 16:49:19,414 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:49:19,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:19,417 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 3 equivalence classes. [2025-01-09 16:49:19,420 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:49:19,420 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 16:49:19,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:19,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:19,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319084256] [2025-01-09 16:49:19,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319084256] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:19,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117165387] [2025-01-09 16:49:19,469 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:49:19,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:19,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:19,472 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:49:19,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 16:49:19,502 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 3 equivalence classes. [2025-01-09 16:49:19,513 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:49:19,513 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 16:49:19,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:19,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:49:19,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:19,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:19,586 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:19,677 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:19,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117165387] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:19,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:19,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2025-01-09 16:49:19,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172391656] [2025-01-09 16:49:19,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:19,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 16:49:19,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:19,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 16:49:19,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2025-01-09 16:49:19,679 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:19,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 249 transitions, 4248 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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) [2025-01-09 16:49:19,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:19,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:19,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:20,112 INFO L124 PetriNetUnfolderBase]: 526/1054 cut-off events. [2025-01-09 16:49:20,112 INFO L125 PetriNetUnfolderBase]: For 21290/21290 co-relation queries the response was YES. [2025-01-09 16:49:20,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8847 conditions, 1054 events. 526/1054 cut-off events. For 21290/21290 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5853 event pairs, 14 based on Foata normal form. 6/1059 useless extension candidates. Maximal degree in co-relation 8681. Up to 390 conditions per place. [2025-01-09 16:49:20,128 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 157 selfloop transitions, 173 changer transitions 0/333 dead transitions. [2025-01-09 16:49:20,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 333 transitions, 6281 flow [2025-01-09 16:49:20,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 16:49:20,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-01-09 16:49:20,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 154 transitions. [2025-01-09 16:49:20,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2025-01-09 16:49:20,130 INFO L175 Difference]: Start difference. First operand has 167 places, 249 transitions, 4248 flow. Second operand 16 states and 154 transitions. [2025-01-09 16:49:20,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 333 transitions, 6281 flow [2025-01-09 16:49:20,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 333 transitions, 5753 flow, removed 257 selfloop flow, removed 3 redundant places. [2025-01-09 16:49:20,266 INFO L231 Difference]: Finished difference. Result has 186 places, 298 transitions, 5579 flow [2025-01-09 16:49:20,266 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3946, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5579, PETRI_PLACES=186, PETRI_TRANSITIONS=298} [2025-01-09 16:49:20,267 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 166 predicate places. [2025-01-09 16:49:20,267 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 298 transitions, 5579 flow [2025-01-09 16:49:20,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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) [2025-01-09 16:49:20,268 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:20,268 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:20,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-09 16:49:20,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:20,469 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:20,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:20,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1032472160, now seen corresponding path program 12 times [2025-01-09 16:49:20,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:20,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698995970] [2025-01-09 16:49:20,470 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:49:20,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:20,473 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 3 equivalence classes. [2025-01-09 16:49:20,478 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:49:20,478 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 16:49:20,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:20,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:20,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698995970] [2025-01-09 16:49:20,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698995970] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:20,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854748914] [2025-01-09 16:49:20,545 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:49:20,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:20,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:20,547 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:49:20,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 16:49:20,576 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 3 equivalence classes. [2025-01-09 16:49:20,590 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:49:20,590 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 16:49:20,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:20,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:49:20,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:20,648 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:20,699 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:20,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854748914] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:20,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:20,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-01-09 16:49:20,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745199443] [2025-01-09 16:49:20,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:20,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 16:49:20,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:20,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 16:49:20,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2025-01-09 16:49:20,701 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:20,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 298 transitions, 5579 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:49:20,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:20,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:20,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:21,003 INFO L124 PetriNetUnfolderBase]: 552/1128 cut-off events. [2025-01-09 16:49:21,003 INFO L125 PetriNetUnfolderBase]: For 19994/19994 co-relation queries the response was YES. [2025-01-09 16:49:21,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9609 conditions, 1128 events. 552/1128 cut-off events. For 19994/19994 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6483 event pairs, 29 based on Foata normal form. 12/1139 useless extension candidates. Maximal degree in co-relation 9422. Up to 369 conditions per place. [2025-01-09 16:49:21,020 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 188 selfloop transitions, 141 changer transitions 21/353 dead transitions. [2025-01-09 16:49:21,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 353 transitions, 7369 flow [2025-01-09 16:49:21,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 16:49:21,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-01-09 16:49:21,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2025-01-09 16:49:21,021 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2025-01-09 16:49:21,021 INFO L175 Difference]: Start difference. First operand has 186 places, 298 transitions, 5579 flow. Second operand 12 states and 117 transitions. [2025-01-09 16:49:21,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 353 transitions, 7369 flow [2025-01-09 16:49:21,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 353 transitions, 6868 flow, removed 238 selfloop flow, removed 3 redundant places. [2025-01-09 16:49:21,156 INFO L231 Difference]: Finished difference. Result has 200 places, 309 transitions, 6160 flow [2025-01-09 16:49:21,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=5223, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6160, PETRI_PLACES=200, PETRI_TRANSITIONS=309} [2025-01-09 16:49:21,157 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 180 predicate places. [2025-01-09 16:49:21,157 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 309 transitions, 6160 flow [2025-01-09 16:49:21,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:49:21,157 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:21,157 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:21,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-09 16:49:21,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-09 16:49:21,360 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:21,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:21,360 INFO L85 PathProgramCache]: Analyzing trace with hash -302541345, now seen corresponding path program 13 times [2025-01-09 16:49:21,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:21,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159486964] [2025-01-09 16:49:21,360 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:49:21,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:21,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 16:49:21,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:49:21,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:49:21,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:21,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:21,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159486964] [2025-01-09 16:49:21,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159486964] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:21,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98426217] [2025-01-09 16:49:21,416 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:49:21,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:21,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:21,418 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:49:21,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 16:49:21,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 16:49:21,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:49:21,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:49:21,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:21,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:49:21,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:21,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:21,546 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:21,615 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:21,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98426217] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:21,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:21,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-01-09 16:49:21,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664834342] [2025-01-09 16:49:21,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:21,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 16:49:21,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:21,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 16:49:21,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2025-01-09 16:49:21,617 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:21,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 309 transitions, 6160 flow. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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) [2025-01-09 16:49:21,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:21,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:21,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:21,926 INFO L124 PetriNetUnfolderBase]: 588/1154 cut-off events. [2025-01-09 16:49:21,927 INFO L125 PetriNetUnfolderBase]: For 16150/16150 co-relation queries the response was YES. [2025-01-09 16:49:21,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10068 conditions, 1154 events. 588/1154 cut-off events. For 16150/16150 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6386 event pairs, 20 based on Foata normal form. 6/1159 useless extension candidates. Maximal degree in co-relation 9891. Up to 589 conditions per place. [2025-01-09 16:49:21,941 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 232 selfloop transitions, 141 changer transitions 4/380 dead transitions. [2025-01-09 16:49:21,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 380 transitions, 8026 flow [2025-01-09 16:49:21,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 16:49:21,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-01-09 16:49:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 162 transitions. [2025-01-09 16:49:21,944 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-01-09 16:49:21,944 INFO L175 Difference]: Start difference. First operand has 200 places, 309 transitions, 6160 flow. Second operand 18 states and 162 transitions. [2025-01-09 16:49:21,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 380 transitions, 8026 flow [2025-01-09 16:49:22,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 380 transitions, 7785 flow, removed 109 selfloop flow, removed 3 redundant places. [2025-01-09 16:49:22,048 INFO L231 Difference]: Finished difference. Result has 216 places, 346 transitions, 7055 flow [2025-01-09 16:49:22,048 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=5885, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7055, PETRI_PLACES=216, PETRI_TRANSITIONS=346} [2025-01-09 16:49:22,048 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 196 predicate places. [2025-01-09 16:49:22,048 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 346 transitions, 7055 flow [2025-01-09 16:49:22,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 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) [2025-01-09 16:49:22,048 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:22,048 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:22,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-09 16:49:22,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-09 16:49:22,249 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:22,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:22,250 INFO L85 PathProgramCache]: Analyzing trace with hash -300746152, now seen corresponding path program 14 times [2025-01-09 16:49:22,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:22,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293847063] [2025-01-09 16:49:22,250 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:49:22,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:22,253 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-09 16:49:22,257 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:49:22,257 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:49:22,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:22,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:22,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:22,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293847063] [2025-01-09 16:49:22,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293847063] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:22,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793605408] [2025-01-09 16:49:22,314 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:49:22,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:22,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:22,317 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:49:22,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 16:49:22,348 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-09 16:49:22,359 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:49:22,360 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:49:22,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:22,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:49:22,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:22,439 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:22,529 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:22,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793605408] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:22,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:22,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2025-01-09 16:49:22,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790011700] [2025-01-09 16:49:22,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:22,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 16:49:22,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:22,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 16:49:22,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2025-01-09 16:49:22,530 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:22,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 346 transitions, 7055 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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) [2025-01-09 16:49:22,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:22,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:22,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:23,028 INFO L124 PetriNetUnfolderBase]: 689/1342 cut-off events. [2025-01-09 16:49:23,029 INFO L125 PetriNetUnfolderBase]: For 16589/16589 co-relation queries the response was YES. [2025-01-09 16:49:23,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11569 conditions, 1342 events. 689/1342 cut-off events. For 16589/16589 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7701 event pairs, 0 based on Foata normal form. 3/1344 useless extension candidates. Maximal degree in co-relation 11381. Up to 555 conditions per place. [2025-01-09 16:49:23,042 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 235 selfloop transitions, 206 changer transitions 0/444 dead transitions. [2025-01-09 16:49:23,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 444 transitions, 9277 flow [2025-01-09 16:49:23,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 16:49:23,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-01-09 16:49:23,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 155 transitions. [2025-01-09 16:49:23,043 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5381944444444444 [2025-01-09 16:49:23,043 INFO L175 Difference]: Start difference. First operand has 216 places, 346 transitions, 7055 flow. Second operand 16 states and 155 transitions. [2025-01-09 16:49:23,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 444 transitions, 9277 flow [2025-01-09 16:49:23,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 444 transitions, 8974 flow, removed 82 selfloop flow, removed 6 redundant places. [2025-01-09 16:49:23,176 INFO L231 Difference]: Finished difference. Result has 229 places, 404 transitions, 8472 flow [2025-01-09 16:49:23,177 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=6762, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=8472, PETRI_PLACES=229, PETRI_TRANSITIONS=404} [2025-01-09 16:49:23,177 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 209 predicate places. [2025-01-09 16:49:23,177 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 404 transitions, 8472 flow [2025-01-09 16:49:23,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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) [2025-01-09 16:49:23,177 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:23,177 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:23,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-09 16:49:23,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:23,378 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:23,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:23,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1505863591, now seen corresponding path program 15 times [2025-01-09 16:49:23,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:23,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311011625] [2025-01-09 16:49:23,379 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:49:23,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:23,382 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-01-09 16:49:23,385 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:49:23,385 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:49:23,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:23,445 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:23,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:23,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311011625] [2025-01-09 16:49:23,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311011625] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:23,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349067913] [2025-01-09 16:49:23,446 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:49:23,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:23,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:23,448 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:49:23,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-09 16:49:23,477 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-01-09 16:49:23,489 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:49:23,489 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:49:23,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:23,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:49:23,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:23,559 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:23,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349067913] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:23,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:23,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2025-01-09 16:49:23,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663743613] [2025-01-09 16:49:23,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:23,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 16:49:23,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:23,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 16:49:23,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2025-01-09 16:49:23,627 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:23,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 404 transitions, 8472 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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) [2025-01-09 16:49:23,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:23,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:23,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:24,023 INFO L124 PetriNetUnfolderBase]: 707/1336 cut-off events. [2025-01-09 16:49:24,023 INFO L125 PetriNetUnfolderBase]: For 17287/17287 co-relation queries the response was YES. [2025-01-09 16:49:24,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12110 conditions, 1336 events. 707/1336 cut-off events. For 17287/17287 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7441 event pairs, 21 based on Foata normal form. 12/1347 useless extension candidates. Maximal degree in co-relation 11992. Up to 599 conditions per place. [2025-01-09 16:49:24,037 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 250 selfloop transitions, 179 changer transitions 8/440 dead transitions. [2025-01-09 16:49:24,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 440 transitions, 9674 flow [2025-01-09 16:49:24,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 16:49:24,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-01-09 16:49:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 151 transitions. [2025-01-09 16:49:24,039 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5243055555555556 [2025-01-09 16:49:24,039 INFO L175 Difference]: Start difference. First operand has 229 places, 404 transitions, 8472 flow. Second operand 16 states and 151 transitions. [2025-01-09 16:49:24,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 440 transitions, 9674 flow [2025-01-09 16:49:24,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 440 transitions, 9500 flow, removed 60 selfloop flow, removed 4 redundant places. [2025-01-09 16:49:24,199 INFO L231 Difference]: Finished difference. Result has 239 places, 403 transitions, 8558 flow [2025-01-09 16:49:24,199 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=8127, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=8558, PETRI_PLACES=239, PETRI_TRANSITIONS=403} [2025-01-09 16:49:24,200 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 219 predicate places. [2025-01-09 16:49:24,200 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 403 transitions, 8558 flow [2025-01-09 16:49:24,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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) [2025-01-09 16:49:24,200 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:24,200 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:24,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-09 16:49:24,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:24,400 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:24,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:24,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1925556211, now seen corresponding path program 16 times [2025-01-09 16:49:24,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:24,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136327436] [2025-01-09 16:49:24,401 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:49:24,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:24,404 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:49:24,407 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:49:24,407 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:49:24,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:24,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:24,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136327436] [2025-01-09 16:49:24,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136327436] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:24,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842207570] [2025-01-09 16:49:24,534 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:49:24,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:24,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:24,537 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:49:24,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-09 16:49:24,567 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-01-09 16:49:24,580 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:49:24,580 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:49:24,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:24,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 16:49:24,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:24,739 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:24,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842207570] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:24,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:24,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 20 [2025-01-09 16:49:24,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184351688] [2025-01-09 16:49:24,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:24,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 16:49:24,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:24,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 16:49:24,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2025-01-09 16:49:24,986 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:24,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 403 transitions, 8558 flow. Second operand has 21 states, 21 states have (on average 7.190476190476191) internal successors, (151), 21 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:49:24,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:24,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:24,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:25,846 INFO L124 PetriNetUnfolderBase]: 999/1889 cut-off events. [2025-01-09 16:49:25,846 INFO L125 PetriNetUnfolderBase]: For 35851/35851 co-relation queries the response was YES. [2025-01-09 16:49:25,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17266 conditions, 1889 events. 999/1889 cut-off events. For 35851/35851 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 11075 event pairs, 3 based on Foata normal form. 63/1951 useless extension candidates. Maximal degree in co-relation 17116. Up to 858 conditions per place. [2025-01-09 16:49:25,870 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 356 selfloop transitions, 255 changer transitions 13/627 dead transitions. [2025-01-09 16:49:25,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 627 transitions, 13590 flow [2025-01-09 16:49:25,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-09 16:49:25,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-01-09 16:49:25,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 299 transitions. [2025-01-09 16:49:25,872 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5727969348659003 [2025-01-09 16:49:25,872 INFO L175 Difference]: Start difference. First operand has 239 places, 403 transitions, 8558 flow. Second operand 29 states and 299 transitions. [2025-01-09 16:49:25,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 627 transitions, 13590 flow [2025-01-09 16:49:26,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 627 transitions, 13212 flow, removed 81 selfloop flow, removed 13 redundant places. [2025-01-09 16:49:26,185 INFO L231 Difference]: Finished difference. Result has 271 places, 541 transitions, 12181 flow [2025-01-09 16:49:26,185 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=8231, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=12181, PETRI_PLACES=271, PETRI_TRANSITIONS=541} [2025-01-09 16:49:26,186 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 251 predicate places. [2025-01-09 16:49:26,186 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 541 transitions, 12181 flow [2025-01-09 16:49:26,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.190476190476191) internal successors, (151), 21 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:49:26,186 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:26,186 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:26,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-09 16:49:26,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:26,387 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:26,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:26,388 INFO L85 PathProgramCache]: Analyzing trace with hash 507058561, now seen corresponding path program 17 times [2025-01-09 16:49:26,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:26,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452294153] [2025-01-09 16:49:26,388 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:49:26,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:26,391 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-01-09 16:49:26,394 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:49:26,394 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 16:49:26,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 16:49:26,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:26,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452294153] [2025-01-09 16:49:26,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452294153] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:26,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199513267] [2025-01-09 16:49:26,447 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:49:26,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:26,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:26,451 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:49:26,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-09 16:49:26,478 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 3 equivalence classes. [2025-01-09 16:49:26,491 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:49:26,491 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-09 16:49:26,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:26,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 16:49:26,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:26,608 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:49:26,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199513267] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:26,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:26,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 5] total 16 [2025-01-09 16:49:26,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054757346] [2025-01-09 16:49:26,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:26,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 16:49:26,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:26,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 16:49:26,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2025-01-09 16:49:26,665 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:26,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 541 transitions, 12181 flow. Second operand has 16 states, 16 states have (on average 7.6875) internal successors, (123), 16 states have internal predecessors, (123), 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) [2025-01-09 16:49:26,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:26,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:26,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:27,453 INFO L124 PetriNetUnfolderBase]: 1186/2246 cut-off events. [2025-01-09 16:49:27,453 INFO L125 PetriNetUnfolderBase]: For 52510/52510 co-relation queries the response was YES. [2025-01-09 16:49:27,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22066 conditions, 2246 events. 1186/2246 cut-off events. For 52510/52510 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 13855 event pairs, 49 based on Foata normal form. 40/2285 useless extension candidates. Maximal degree in co-relation 21849. Up to 1277 conditions per place. [2025-01-09 16:49:27,475 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 410 selfloop transitions, 161 changer transitions 130/704 dead transitions. [2025-01-09 16:49:27,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 704 transitions, 17155 flow [2025-01-09 16:49:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-09 16:49:27,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-01-09 16:49:27,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 220 transitions. [2025-01-09 16:49:27,477 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-01-09 16:49:27,477 INFO L175 Difference]: Start difference. First operand has 271 places, 541 transitions, 12181 flow. Second operand 22 states and 220 transitions. [2025-01-09 16:49:27,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 704 transitions, 17155 flow [2025-01-09 16:49:27,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 704 transitions, 15977 flow, removed 489 selfloop flow, removed 3 redundant places. [2025-01-09 16:49:27,897 INFO L231 Difference]: Finished difference. Result has 300 places, 531 transitions, 11887 flow [2025-01-09 16:49:27,898 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=11102, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=11887, PETRI_PLACES=300, PETRI_TRANSITIONS=531} [2025-01-09 16:49:27,898 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 280 predicate places. [2025-01-09 16:49:27,898 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 531 transitions, 11887 flow [2025-01-09 16:49:27,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.6875) internal successors, (123), 16 states have internal predecessors, (123), 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) [2025-01-09 16:49:27,898 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:27,899 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:27,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-01-09 16:49:28,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:28,103 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:28,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:28,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1700248317, now seen corresponding path program 18 times [2025-01-09 16:49:28,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:28,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152307120] [2025-01-09 16:49:28,103 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:49:28,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:28,106 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-01-09 16:49:28,109 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:49:28,110 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 16:49:28,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:28,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:28,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152307120] [2025-01-09 16:49:28,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152307120] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:28,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125973094] [2025-01-09 16:49:28,185 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:49:28,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:28,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:28,187 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:49:28,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-09 16:49:28,215 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-01-09 16:49:28,227 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:49:28,227 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-09 16:49:28,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:28,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 16:49:28,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:28,331 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:28,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125973094] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:28,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:28,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 17 [2025-01-09 16:49:28,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297644464] [2025-01-09 16:49:28,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:28,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 16:49:28,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:28,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 16:49:28,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2025-01-09 16:49:28,415 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:28,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 531 transitions, 11887 flow. Second operand has 18 states, 18 states have (on average 7.555555555555555) internal successors, (136), 18 states have internal predecessors, (136), 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) [2025-01-09 16:49:28,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:28,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:28,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:29,061 INFO L124 PetriNetUnfolderBase]: 1249/2349 cut-off events. [2025-01-09 16:49:29,061 INFO L125 PetriNetUnfolderBase]: For 68228/68228 co-relation queries the response was YES. [2025-01-09 16:49:29,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23225 conditions, 2349 events. 1249/2349 cut-off events. For 68228/68228 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 14498 event pairs, 11 based on Foata normal form. 10/2358 useless extension candidates. Maximal degree in co-relation 23124. Up to 813 conditions per place. [2025-01-09 16:49:29,084 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 255 selfloop transitions, 445 changer transitions 12/715 dead transitions. [2025-01-09 16:49:29,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 715 transitions, 17522 flow [2025-01-09 16:49:29,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 16:49:29,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-01-09 16:49:29,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 190 transitions. [2025-01-09 16:49:29,085 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6209150326797386 [2025-01-09 16:49:29,085 INFO L175 Difference]: Start difference. First operand has 300 places, 531 transitions, 11887 flow. Second operand 17 states and 190 transitions. [2025-01-09 16:49:29,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 715 transitions, 17522 flow [2025-01-09 16:49:29,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 715 transitions, 15884 flow, removed 538 selfloop flow, removed 23 redundant places. [2025-01-09 16:49:29,574 INFO L231 Difference]: Finished difference. Result has 279 places, 636 transitions, 14234 flow [2025-01-09 16:49:29,575 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=10608, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=343, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=14234, PETRI_PLACES=279, PETRI_TRANSITIONS=636} [2025-01-09 16:49:29,575 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 259 predicate places. [2025-01-09 16:49:29,575 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 636 transitions, 14234 flow [2025-01-09 16:49:29,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.555555555555555) internal successors, (136), 18 states have internal predecessors, (136), 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) [2025-01-09 16:49:29,575 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:29,575 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:29,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-09 16:49:29,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:29,776 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:29,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:29,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1747807660, now seen corresponding path program 19 times [2025-01-09 16:49:29,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:29,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364747598] [2025-01-09 16:49:29,777 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:49:29,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:29,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 16:49:29,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 16:49:29,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:49:29,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:29,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:29,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364747598] [2025-01-09 16:49:29,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364747598] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:29,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293546012] [2025-01-09 16:49:29,868 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:49:29,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:29,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:29,871 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:49:29,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-09 16:49:29,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 16:49:29,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 16:49:29,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:49:29,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:29,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 16:49:29,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:29,993 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:29,994 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:30,092 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:30,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293546012] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:30,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:30,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-01-09 16:49:30,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434359626] [2025-01-09 16:49:30,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:30,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 16:49:30,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:30,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 16:49:30,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2025-01-09 16:49:30,095 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:30,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 636 transitions, 14234 flow. Second operand has 18 states, 18 states have (on average 6.944444444444445) internal successors, (125), 18 states have internal predecessors, (125), 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) [2025-01-09 16:49:30,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:30,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:30,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:30,783 INFO L124 PetriNetUnfolderBase]: 1242/2394 cut-off events. [2025-01-09 16:49:30,783 INFO L125 PetriNetUnfolderBase]: For 68929/68929 co-relation queries the response was YES. [2025-01-09 16:49:30,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24250 conditions, 2394 events. 1242/2394 cut-off events. For 68929/68929 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 15238 event pairs, 38 based on Foata normal form. 36/2429 useless extension candidates. Maximal degree in co-relation 24154. Up to 835 conditions per place. [2025-01-09 16:49:30,807 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 297 selfloop transitions, 350 changer transitions 59/709 dead transitions. [2025-01-09 16:49:30,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 709 transitions, 17226 flow [2025-01-09 16:49:30,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 16:49:30,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-01-09 16:49:30,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 148 transitions. [2025-01-09 16:49:30,809 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5481481481481482 [2025-01-09 16:49:30,809 INFO L175 Difference]: Start difference. First operand has 279 places, 636 transitions, 14234 flow. Second operand 15 states and 148 transitions. [2025-01-09 16:49:30,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 709 transitions, 17226 flow [2025-01-09 16:49:31,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 709 transitions, 16010 flow, removed 346 selfloop flow, removed 12 redundant places. [2025-01-09 16:49:31,311 INFO L231 Difference]: Finished difference. Result has 285 places, 615 transitions, 14405 flow [2025-01-09 16:49:31,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=13002, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=14405, PETRI_PLACES=285, PETRI_TRANSITIONS=615} [2025-01-09 16:49:31,312 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 265 predicate places. [2025-01-09 16:49:31,312 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 615 transitions, 14405 flow [2025-01-09 16:49:31,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.944444444444445) internal successors, (125), 18 states have internal predecessors, (125), 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) [2025-01-09 16:49:31,312 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:31,312 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:31,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-01-09 16:49:31,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-01-09 16:49:31,513 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:31,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:31,513 INFO L85 PathProgramCache]: Analyzing trace with hash 197998456, now seen corresponding path program 20 times [2025-01-09 16:49:31,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:31,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964480037] [2025-01-09 16:49:31,514 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:49:31,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:31,516 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-01-09 16:49:31,519 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 16:49:31,519 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:49:31,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:31,576 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:49:31,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:31,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964480037] [2025-01-09 16:49:31,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964480037] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:31,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334694746] [2025-01-09 16:49:31,576 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:49:31,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:31,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:31,579 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:49:31,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-09 16:49:31,607 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-01-09 16:49:31,619 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 16:49:31,619 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:49:31,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:31,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 16:49:31,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:31,720 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:31,721 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:49:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:49:31,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334694746] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:49:31,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:49:31,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2025-01-09 16:49:31,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140469031] [2025-01-09 16:49:31,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:49:31,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 16:49:31,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:31,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 16:49:31,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2025-01-09 16:49:31,827 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:31,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 615 transitions, 14405 flow. Second operand has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 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) [2025-01-09 16:49:31,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:31,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:31,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:32,644 INFO L124 PetriNetUnfolderBase]: 1165/2213 cut-off events. [2025-01-09 16:49:32,645 INFO L125 PetriNetUnfolderBase]: For 53038/53038 co-relation queries the response was YES. [2025-01-09 16:49:32,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22734 conditions, 2213 events. 1165/2213 cut-off events. For 53038/53038 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 13453 event pairs, 58 based on Foata normal form. 24/2236 useless extension candidates. Maximal degree in co-relation 22641. Up to 1356 conditions per place. [2025-01-09 16:49:32,666 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 446 selfloop transitions, 213 changer transitions 17/679 dead transitions. [2025-01-09 16:49:32,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 679 transitions, 16968 flow [2025-01-09 16:49:32,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 16:49:32,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-01-09 16:49:32,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 167 transitions. [2025-01-09 16:49:32,667 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2025-01-09 16:49:32,667 INFO L175 Difference]: Start difference. First operand has 285 places, 615 transitions, 14405 flow. Second operand 18 states and 167 transitions. [2025-01-09 16:49:32,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 679 transitions, 16968 flow [2025-01-09 16:49:33,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 679 transitions, 15793 flow, removed 530 selfloop flow, removed 9 redundant places. [2025-01-09 16:49:33,063 INFO L231 Difference]: Finished difference. Result has 299 places, 628 transitions, 14608 flow [2025-01-09 16:49:33,064 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=13421, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=14608, PETRI_PLACES=299, PETRI_TRANSITIONS=628} [2025-01-09 16:49:33,065 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 279 predicate places. [2025-01-09 16:49:33,065 INFO L471 AbstractCegarLoop]: Abstraction has has 299 places, 628 transitions, 14608 flow [2025-01-09 16:49:33,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.9523809523809526) internal successors, (146), 21 states have internal predecessors, (146), 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) [2025-01-09 16:49:33,066 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:49:33,066 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:49:33,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-01-09 16:49:33,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-01-09 16:49:33,267 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:49:33,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:49:33,268 INFO L85 PathProgramCache]: Analyzing trace with hash -693432584, now seen corresponding path program 21 times [2025-01-09 16:49:33,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:49:33,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696812118] [2025-01-09 16:49:33,268 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:49:33,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:49:33,273 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-01-09 16:49:33,278 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 20 statements. [2025-01-09 16:49:33,278 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:49:33,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:33,342 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-09 16:49:33,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:49:33,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696812118] [2025-01-09 16:49:33,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696812118] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:49:33,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742644929] [2025-01-09 16:49:33,343 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:49:33,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:49:33,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:49:33,345 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:49:33,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-09 16:49:33,374 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-01-09 16:49:33,384 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 20 statements. [2025-01-09 16:49:33,384 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:49:33,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:49:33,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:49:33,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:49:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-09 16:49:33,416 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:49:33,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742644929] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:49:33,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:49:33,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2025-01-09 16:49:33,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467938948] [2025-01-09 16:49:33,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:49:33,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:49:33,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:49:33,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:49:33,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-01-09 16:49:33,417 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 18 [2025-01-09 16:49:33,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 628 transitions, 14608 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2025-01-09 16:49:33,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:49:33,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 18 [2025-01-09 16:49:33,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:49:33,931 INFO L124 PetriNetUnfolderBase]: 1133/2105 cut-off events. [2025-01-09 16:49:33,931 INFO L125 PetriNetUnfolderBase]: For 29423/29423 co-relation queries the response was YES. [2025-01-09 16:49:33,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20822 conditions, 2105 events. 1133/2105 cut-off events. For 29423/29423 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 12439 event pairs, 3 based on Foata normal form. 26/2130 useless extension candidates. Maximal degree in co-relation 20723. Up to 1155 conditions per place. [2025-01-09 16:49:33,952 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 0 selfloop transitions, 0 changer transitions 635/635 dead transitions. [2025-01-09 16:49:33,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 635 transitions, 15923 flow [2025-01-09 16:49:33,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:49:33,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:49:33,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2025-01-09 16:49:33,953 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2025-01-09 16:49:33,953 INFO L175 Difference]: Start difference. First operand has 299 places, 628 transitions, 14608 flow. Second operand 6 states and 57 transitions. [2025-01-09 16:49:33,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 635 transitions, 15923 flow [2025-01-09 16:49:34,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 635 transitions, 15584 flow, removed 144 selfloop flow, removed 8 redundant places. [2025-01-09 16:49:34,230 INFO L231 Difference]: Finished difference. Result has 291 places, 0 transitions, 0 flow [2025-01-09 16:49:34,231 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=14231, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=291, PETRI_TRANSITIONS=0} [2025-01-09 16:49:34,231 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 271 predicate places. [2025-01-09 16:49:34,231 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 0 transitions, 0 flow [2025-01-09 16:49:34,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2025-01-09 16:49:34,234 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-01-09 16:49:34,234 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-01-09 16:49:34,234 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-01-09 16:49:34,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-01-09 16:49:34,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-01-09 16:49:34,435 INFO L422 BasicCegarLoop]: Path program histogram: [21, 2, 2, 1] [2025-01-09 16:49:34,438 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-01-09 16:49:34,439 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 16:49:34,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 04:49:34 BasicIcfg [2025-01-09 16:49:34,444 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 16:49:34,444 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 16:49:34,444 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 16:49:34,445 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 16:49:34,445 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:49:09" (3/4) ... [2025-01-09 16:49:34,447 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-09 16:49:34,450 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-01-09 16:49:34,450 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-01-09 16:49:34,455 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2025-01-09 16:49:34,455 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-01-09 16:49:34,455 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-01-09 16:49:34,455 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-01-09 16:49:34,529 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 16:49:34,530 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 16:49:34,530 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 16:49:34,530 INFO L158 Benchmark]: Toolchain (without parser) took 25227.78ms. Allocated memory was 142.6MB in the beginning and 704.6MB in the end (delta: 562.0MB). Free memory was 112.1MB in the beginning and 225.9MB in the end (delta: -113.8MB). Peak memory consumption was 448.9MB. Max. memory is 16.1GB. [2025-01-09 16:49:34,531 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 16:49:34,532 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.85ms. Allocated memory is still 142.6MB. Free memory was 112.1MB in the beginning and 100.6MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 16:49:34,532 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.51ms. Allocated memory is still 142.6MB. Free memory was 100.6MB in the beginning and 99.6MB in the end (delta: 954.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 16:49:34,532 INFO L158 Benchmark]: Boogie Preprocessor took 27.11ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 98.2MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 16:49:34,532 INFO L158 Benchmark]: RCFGBuilder took 310.93ms. Allocated memory is still 142.6MB. Free memory was 98.2MB in the beginning and 79.5MB in the end (delta: 18.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 16:49:34,534 INFO L158 Benchmark]: TraceAbstraction took 24559.48ms. Allocated memory was 142.6MB in the beginning and 704.6MB in the end (delta: 562.0MB). Free memory was 78.5MB in the beginning and 231.1MB in the end (delta: -152.6MB). Peak memory consumption was 415.3MB. Max. memory is 16.1GB. [2025-01-09 16:49:34,535 INFO L158 Benchmark]: Witness Printer took 85.30ms. Allocated memory is still 704.6MB. Free memory was 231.1MB in the beginning and 225.9MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 16:49:34,537 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 211.85ms. Allocated memory is still 142.6MB. Free memory was 112.1MB in the beginning and 100.6MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.51ms. Allocated memory is still 142.6MB. Free memory was 100.6MB in the beginning and 99.6MB in the end (delta: 954.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.11ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 98.2MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 310.93ms. Allocated memory is still 142.6MB. Free memory was 98.2MB in the beginning and 79.5MB in the end (delta: 18.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 24559.48ms. Allocated memory was 142.6MB in the beginning and 704.6MB in the end (delta: 562.0MB). Free memory was 78.5MB in the beginning and 231.1MB in the end (delta: -152.6MB). Peak memory consumption was 415.3MB. Max. memory is 16.1GB. * Witness Printer took 85.30ms. Allocated memory is still 704.6MB. Free memory was 231.1MB in the beginning and 225.9MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 25 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.5s, OverallIterations: 26, TraceHistogramMax: 4, PathProgramHistogramMax: 21, EmptinessCheckTime: 0.0s, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1370 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1370 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 457 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4413 IncrementalHoareTripleChecker+Invalid, 4870 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 457 mSolverCounterUnsat, 0 mSDtfsCounter, 4413 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1039 GetRequests, 600 SyntacticMatches, 18 SemanticMatches, 421 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2294 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14608occurred in iteration=25, InterpolantAutomatonStates: 327, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 837 NumberOfCodeBlocks, 833 NumberOfCodeBlocksAsserted, 94 NumberOfCheckSat, 1144 ConstructedInterpolants, 0 QuantifiedInterpolants, 5379 SizeOfPredicates, 15 NumberOfNonLiveVariables, 2200 ConjunctsInSsa, 174 ConjunctsInUnsatCore, 71 InterpolantComputations, 6 PerfectInterpolantSequences, 234/475 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-01-09 16:49:34,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE